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- dnl Copyright (c) 2001-2004, Roger Dingledine
- dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
- dnl Copyright (c) 2007-2017, The Tor Project, Inc.
- dnl See LICENSE for licensing information
- AC_PREREQ([2.63])
- AC_INIT([tor],[0.3.4.8-dev])
- AC_CONFIG_SRCDIR([src/or/main.c])
- AC_CONFIG_MACRO_DIR([m4])
- # "foreign" means we don't follow GNU package layout standards
- # "1.11" means we require automake version 1.11 or newer
- # "subdir-objects" means put .o files in the same directory as the .c files
- AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects -Wall -Werror])
- m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
- AC_CONFIG_HEADERS([orconfig.h])
- AC_USE_SYSTEM_EXTENSIONS
- AC_CANONICAL_HOST
- PKG_PROG_PKG_CONFIG
- if test -f "/etc/redhat-release"; then
- if test -f "/usr/kerberos/include"; then
- CPPFLAGS="$CPPFLAGS -I/usr/kerberos/include"
- fi
- fi
- # Not a no-op; we want to make sure that CPPFLAGS is set before we use
- # the += operator on it in src/or/Makefile.am
- CPPFLAGS="$CPPFLAGS -I\${top_srcdir}/src/common"
- AC_ARG_ENABLE(openbsd-malloc,
- AS_HELP_STRING(--enable-openbsd-malloc, [use malloc code from OpenBSD. Linux only]))
- AC_ARG_ENABLE(static-openssl,
- AS_HELP_STRING(--enable-static-openssl, [link against a static openssl library. Requires --with-openssl-dir]))
- AC_ARG_ENABLE(static-libevent,
- AS_HELP_STRING(--enable-static-libevent, [link against a static libevent library. Requires --with-libevent-dir]))
- AC_ARG_ENABLE(static-zlib,
- AS_HELP_STRING(--enable-static-zlib, [link against a static zlib library. Requires --with-zlib-dir]))
- AC_ARG_ENABLE(static-tor,
- AS_HELP_STRING(--enable-static-tor, [create an entirely static Tor binary. Requires --with-openssl-dir and --with-libevent-dir and --with-zlib-dir]))
- AC_ARG_ENABLE(unittests,
- AS_HELP_STRING(--disable-unittests, [don't build unit tests for Tor. Risky!]))
- AC_ARG_ENABLE(coverage,
- AS_HELP_STRING(--enable-coverage, [enable coverage support in the unit-test build]))
- AC_ARG_ENABLE(asserts-in-tests,
- AS_HELP_STRING(--disable-asserts-in-tests, [disable tor_assert() calls in the unit tests, for branch coverage]))
- AC_ARG_ENABLE(system-torrc,
- AS_HELP_STRING(--disable-system-torrc, [don't look for a system-wide torrc file]))
- AC_ARG_ENABLE(libfuzzer,
- AS_HELP_STRING(--enable-libfuzzer, [build extra fuzzers based on 'libfuzzer']))
- AC_ARG_ENABLE(oss-fuzz,
- AS_HELP_STRING(--enable-oss-fuzz, [build extra fuzzers based on 'oss-fuzz' environment]))
- AC_ARG_ENABLE(memory-sentinels,
- AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
- AC_ARG_ENABLE(rust,
- AS_HELP_STRING(--enable-rust, [enable rust integration]))
- AC_ARG_ENABLE(cargo-online-mode,
- AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
- AC_ARG_ENABLE(restart-debugging,
- AS_HELP_STRING(--enable-restart-debugging, [Build Tor with support for debugging in-process restart. Developers only.]))
- AC_ARG_ENABLE(zstd-advanced-apis,
- AS_HELP_STRING(--disable-zstd-advanced-apis, [Build without support for zstd's "static-only" APIs.]))
- if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
- AC_MSG_ERROR([Can't disable assertions outside of coverage build])
- fi
- AM_CONDITIONAL(UNITTESTS_ENABLED, test "x$enable_unittests" != "xno")
- AM_CONDITIONAL(COVERAGE_ENABLED, test "x$enable_coverage" = "xyes")
- AM_CONDITIONAL(DISABLE_ASSERTS_IN_UNIT_TESTS, test "x$enable_asserts_in_tests" = "xno")
- AM_CONDITIONAL(LIBFUZZER_ENABLED, test "x$enable_libfuzzer" = "xyes")
- AM_CONDITIONAL(OSS_FUZZ_ENABLED, test "x$enable_oss_fuzz" = "xyes")
- AM_CONDITIONAL(USE_RUST, test "x$enable_rust" = "xyes")
- if test "$enable_static_tor" = "yes"; then
- enable_static_libevent="yes";
- enable_static_openssl="yes";
- enable_static_zlib="yes";
- CFLAGS="$CFLAGS -static"
- fi
- if test "$enable_system_torrc" = "no"; then
- AC_DEFINE(DISABLE_SYSTEM_TORRC, 1,
- [Defined if we're not going to look for a torrc in SYSCONF])
- fi
- if test "$enable_memory_sentinels" = "no"; then
- AC_DEFINE(DISABLE_MEMORY_SENTINELS, 1,
- [Defined if we're turning off memory safety code to look for bugs])
- fi
- AM_CONDITIONAL(USE_OPENBSD_MALLOC, test "x$enable_openbsd_malloc" = "xyes")
- AC_ARG_ENABLE(asciidoc,
- AS_HELP_STRING(--disable-asciidoc, [don't use asciidoc (disables building of manpages)]),
- [case "${enableval}" in
- "yes") asciidoc=true ;;
- "no") asciidoc=false ;;
- *) AC_MSG_ERROR(bad value for --disable-asciidoc) ;;
- esac], [asciidoc=true])
- # systemd notify support
- AC_ARG_ENABLE(systemd,
- AS_HELP_STRING(--enable-systemd, [enable systemd notification support]),
- [case "${enableval}" in
- "yes") systemd=true ;;
- "no") systemd=false ;;
- * ) AC_MSG_ERROR(bad value for --enable-systemd) ;;
- esac], [systemd=auto])
- if test "$enable_restart_debugging" = "yes"; then
- AC_DEFINE(ENABLE_RESTART_DEBUGGING, 1,
- [Defined if we're building with support for in-process restart debugging.])
- fi
- if test "$enable_zstd_advanced_apis" != "no"; then
- AC_DEFINE(ENABLE_ZSTD_ADVANCED_APIS, 1,
- [Defined if we're going to try to use zstd's "static-only" APIs.])
- fi
- # systemd support
- if test "x$enable_systemd" = "xno"; then
- have_systemd=no;
- else
- PKG_CHECK_MODULES(SYSTEMD,
- [libsystemd-daemon],
- have_systemd=yes,
- have_systemd=no)
- if test "x$have_systemd" = "xno"; then
- AC_MSG_NOTICE([Okay, checking for systemd a different way...])
- PKG_CHECK_MODULES(SYSTEMD,
- [libsystemd],
- have_systemd=yes,
- have_systemd=no)
- fi
- fi
- if test "x$have_systemd" = "xyes"; then
- AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
- TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
- TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
- PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
- [AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
- fi
- AC_SUBST(TOR_SYSTEMD_CFLAGS)
- AC_SUBST(TOR_SYSTEMD_LIBS)
- if test "x$enable_systemd" = "xyes" -a "x$have_systemd" != "xyes" ; then
- AC_MSG_ERROR([Explicitly requested systemd support, but systemd not found])
- fi
- case "$host" in
- *-*-solaris* )
- AC_DEFINE(_REENTRANT, 1, [Define on some platforms to activate x_r() functions in time.h])
- ;;
- esac
- AC_ARG_ENABLE(gcc-warnings,
- AS_HELP_STRING(--enable-gcc-warnings, [deprecated alias for enable-fatal-warnings]))
- AC_ARG_ENABLE(fatal-warnings,
- AS_HELP_STRING(--enable-fatal-warnings, [tell the compiler to treat all warnings as errors.]))
- AC_ARG_ENABLE(gcc-warnings-advisory,
- AS_HELP_STRING(--disable-gcc-warnings-advisory, [disable the regular verbose warnings]))
- dnl Others suggest '/gs /safeseh /nxcompat /dynamicbase' for non-gcc on Windows
- AC_ARG_ENABLE(gcc-hardening,
- AS_HELP_STRING(--disable-gcc-hardening, [disable compiler security checks]))
- dnl Deprecated --enable-expensive-hardening but keep it for now for backward compat.
- AC_ARG_ENABLE(expensive-hardening,
- AS_HELP_STRING(--enable-expensive-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
- AC_ARG_ENABLE(fragile-hardening,
- AS_HELP_STRING(--enable-fragile-hardening, [enable more fragile and expensive compiler hardening; makes Tor slower]))
- if test "x$enable_expensive_hardening" = "xyes" || test "x$enable_fragile_hardening" = "xyes"; then
- fragile_hardening="yes"
- AC_DEFINE(DEBUG_SMARTLIST, 1, [Enable smartlist debugging])
- fi
- dnl Linker hardening options
- dnl Currently these options are ELF specific - you can't use this with MacOSX
- AC_ARG_ENABLE(linker-hardening,
- AS_HELP_STRING(--disable-linker-hardening, [disable linker security fixups]))
- AC_ARG_ENABLE(local-appdata,
- AS_HELP_STRING(--enable-local-appdata, [default to host local application data paths on Windows]))
- if test "$enable_local_appdata" = "yes"; then
- AC_DEFINE(ENABLE_LOCAL_APPDATA, 1,
- [Defined if we default to host local appdata paths on Windows])
- fi
- # Tor2web mode flag
- AC_ARG_ENABLE(tor2web-mode,
- AS_HELP_STRING(--enable-tor2web-mode, [support tor2web non-anonymous mode]),
- [if test "x$enableval" = "xyes"; then
- CFLAGS="$CFLAGS -D ENABLE_TOR2WEB_MODE=1"
- fi])
- AC_ARG_ENABLE(tool-name-check,
- AS_HELP_STRING(--disable-tool-name-check, [check for sanely named toolchain when cross-compiling]))
- AC_ARG_ENABLE(seccomp,
- AS_HELP_STRING(--disable-seccomp, [do not attempt to use libseccomp]))
- AC_ARG_ENABLE(libscrypt,
- AS_HELP_STRING(--disable-libscrypt, [do not attempt to use libscrypt]))
- dnl Enable event tracing which are transformed to debug log statement.
- AC_ARG_ENABLE(event-tracing-debug,
- AS_HELP_STRING(--enable-event-tracing-debug, [build with event tracing to debug log]))
- AM_CONDITIONAL([USE_EVENT_TRACING_DEBUG], [test "x$enable_event_tracing_debug" = "xyes"])
- if test x$enable_event_tracing_debug = xyes; then
- AC_DEFINE([USE_EVENT_TRACING_DEBUG], [1], [Tracing framework to log debug])
- AC_DEFINE([TOR_EVENT_TRACING_ENABLED], [1], [Compile the event tracing instrumentation])
- fi
- dnl Enable Android only features.
- AC_ARG_ENABLE(android,
- AS_HELP_STRING(--enable-android, [build with Android features enabled]))
- AM_CONDITIONAL([USE_ANDROID], [test "x$enable_android" = "xyes"])
- if test "x$enable_android" = "xyes"; then
- AC_DEFINE([USE_ANDROID], [1], [Compile with Android specific features enabled])
- dnl Check if the Android log library is available.
- AC_CHECK_HEADERS([android/log.h])
- AC_SEARCH_LIBS(__android_log_write, [log])
- fi
- dnl ---
- dnl Tor modules options. These options are namespaced with --disable-module-XXX
- dnl ---
- dnl All our modules.
- m4_define(MODULES, dirauth)
- dnl Directory Authority module.
- AC_ARG_ENABLE([module-dirauth],
- AS_HELP_STRING([--disable-module-dirauth],
- [Do not build tor with the dirauth module]),
- [], dnl Action if-given
- AC_DEFINE([HAVE_MODULE_DIRAUTH], [1],
- [Compile with Directory Authority feature support]))
- AM_CONDITIONAL(BUILD_MODULE_DIRAUTH, [test "x$enable_module_dirauth" != "xno"])
- dnl Helper variables.
- TOR_MODULES_ALL_ENABLED=
- AC_DEFUN([ADD_MODULE], [
- MODULE=m4_toupper($1)
- TOR_MODULES_ALL_ENABLED="${TOR_MODULES_ALL_ENABLED} -DHAVE_MODULE_${MODULE}=1"
- ])
- m4_foreach_w([module], MODULES, [ADD_MODULE([module])])
- AC_SUBST(TOR_MODULES_ALL_ENABLED)
- dnl check for the correct "ar" when cross-compiling.
- dnl (AM_PROG_AR was new in automake 1.11.2, which we do not yet require,
- dnl so kludge up a replacement for the case where it isn't there yet.)
- m4_ifdef([AM_PROG_AR],
- [AM_PROG_AR],
- [AN_MAKEVAR([AR], [AC_PROG_AR])
- AN_PROGRAM([ar], [AC_PROG_AR])
- AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL([AR], [ar], [:])])
- AC_PROG_AR])
- dnl Check whether the above macro has settled for a simply named tool even
- dnl though we're cross compiling. We must do this before running AC_PROG_CC,
- dnl because that will find any cc on the system, not only the cross-compiler,
- dnl and then verify that a binary built with this compiler runs on the
- dnl build system. It will then come to the false conclusion that we're not
- dnl cross-compiling.
- if test "x$enable_tool_name_check" != "xno"; then
- if test "x$ac_tool_warned" = "xyes"; then
- AC_MSG_ERROR([We are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
- elif test "x$ac_ct_AR" != "x" -a "x$cross_compiling" = "xmaybe"; then
- AC_MSG_ERROR([We think we are cross compiling but could not find a properly named toolchain. Do you have your cross-compiling toolchain in PATH? (You can --disable-tool-name-check to ignore this.)])
- fi
- fi
- AC_PROG_CC
- AC_PROG_CPP
- AC_PROG_MAKE_SET
- AC_PROG_RANLIB
- AC_PROG_SED
- AC_ARG_VAR([PERL], [path to Perl binary])
- AC_CHECK_PROGS([PERL], [perl])
- AM_CONDITIONAL(USE_PERL, [test "x$ac_cv_prog_PERL" != "x"])
- dnl check for asciidoc and a2x
- AC_PATH_PROG([ASCIIDOC], [asciidoc], none)
- AC_PATH_PROGS([A2X], [a2x a2x.py], none)
- AM_CONDITIONAL(USE_ASCIIDOC, test "x$asciidoc" = "xtrue")
- AM_PROG_CC_C_O
- AC_PROG_CC_C99
- AC_ARG_VAR([PYTHON], [path to Python binary])
- AC_CHECK_PROGS(PYTHON, [ \
- python3 \
- python3.8 python3.7 python3.6 python3.5 python3.4 \
- python \
- python2 python2.7])
- if test "x$PYTHON" = "x"; then
- AC_MSG_WARN([Python unavailable; some tests will not be run.])
- fi
- AM_CONDITIONAL(USEPYTHON, [test "x$PYTHON" != "x"])
- dnl List all external rust crates we depend on here. Include the version
- rust_crates=" \
- digest-0.7.2 \
- libc-0.2.39 \
- "
- AC_SUBST(rust_crates)
- ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
- AC_C_FLEXIBLE_ARRAY_MEMBER
- ], [
- dnl Maybe we've got an old autoconf...
- AC_CACHE_CHECK([for flexible array members],
- tor_cv_c_flexarray,
- [AC_COMPILE_IFELSE(
- AC_LANG_PROGRAM([
- struct abc { int a; char b[]; };
- ], [
- struct abc *def = malloc(sizeof(struct abc)+sizeof(char));
- def->b[0] = 33;
- ]),
- [tor_cv_c_flexarray=yes],
- [tor_cv_c_flexarray=no])])
- if test "$tor_cv_flexarray" = "yes"; then
- AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
- else
- AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1], [Define to nothing if C supports flexible array members, and to 1 if it does not.])
- fi
- ])
- AC_CACHE_CHECK([for working C99 mid-block declaration syntax],
- tor_cv_c_c99_decl,
- [AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([], [int x; x = 3; int y; y = 4 + x;])],
- [tor_cv_c_c99_decl=yes],
- [tor_cv_c_c99_decl=no] )])
- if test "$tor_cv_c_c99_decl" != "yes"; then
- AC_MSG_ERROR([Your compiler doesn't support c99 mid-block declarations. This is required as of Tor 0.2.6.x])
- fi
- AC_CACHE_CHECK([for working C99 designated initializers],
- tor_cv_c_c99_designated_init,
- [AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([struct s { int a; int b; };],
- [[ struct s ss = { .b = 5, .a = 6 }; ]])],
- [tor_cv_c_c99_designated_init=yes],
- [tor_cv_c_c99_designated_init=no] )])
- if test "$tor_cv_c_c99_designated_init" != "yes"; then
- AC_MSG_ERROR([Your compiler doesn't support c99 designated initializers. This is required as of Tor 0.2.6.x])
- fi
- TORUSER=_tor
- AC_ARG_WITH(tor-user,
- AS_HELP_STRING(--with-tor-user=NAME, [specify username for tor daemon]),
- [
- TORUSER=$withval
- ]
- )
- AC_SUBST(TORUSER)
- TORGROUP=_tor
- AC_ARG_WITH(tor-group,
- AS_HELP_STRING(--with-tor-group=NAME, [specify group name for tor daemon]),
- [
- TORGROUP=$withval
- ]
- )
- AC_SUBST(TORGROUP)
- dnl If _WIN32 is defined and non-zero, we are building for win32
- AC_MSG_CHECKING([for win32])
- AC_RUN_IFELSE([AC_LANG_SOURCE([
- int main(int c, char **v) {
- #ifdef _WIN32
- #if _WIN32
- return 0;
- #else
- return 1;
- #endif
- #else
- return 2;
- #endif
- }])],
- bwin32=true; AC_MSG_RESULT([yes]),
- bwin32=false; AC_MSG_RESULT([no]),
- bwin32=cross; AC_MSG_RESULT([cross])
- )
- if test "$bwin32" = "cross"; then
- AC_MSG_CHECKING([for win32 (cross)])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([
- #ifdef _WIN32
- int main(int c, char **v) {return 0;}
- #else
- #error
- int main(int c, char **v) {return x(y);}
- #endif
- ])],
- bwin32=true; AC_MSG_RESULT([yes]),
- bwin32=false; AC_MSG_RESULT([no]))
- fi
- AH_BOTTOM([
- #ifdef _WIN32
- /* Defined to access windows functions and definitions for >=WinXP */
- # ifndef WINVER
- # define WINVER 0x0501
- # endif
- /* Defined to access _other_ windows functions and definitions for >=WinXP */
- # ifndef _WIN32_WINNT
- # define _WIN32_WINNT 0x0501
- # endif
- /* Defined to avoid including some windows headers as part of Windows.h */
- # ifndef WIN32_LEAN_AND_MEAN
- # define WIN32_LEAN_AND_MEAN 1
- # endif
- #endif
- ])
- AM_CONDITIONAL(BUILD_NT_SERVICES, test "x$bwin32" = "xtrue")
- AM_CONDITIONAL(BUILD_LIBTORRUNNER, test "x$bwin32" != "xtrue")
- dnl Enable C99 when compiling with MIPSpro
- AC_MSG_CHECKING([for MIPSpro compiler])
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
- #if (defined(__sgi) && defined(_COMPILER_VERSION))
- #error
- return x(y);
- #endif
- ])],
- bmipspro=false; AC_MSG_RESULT(no),
- bmipspro=true; AC_MSG_RESULT(yes))
- if test "$bmipspro" = "true"; then
- CFLAGS="$CFLAGS -c99"
- fi
- AC_C_BIGENDIAN
- AC_ARG_VAR([TOR_RUST_TARGET], [Rust target, must be specified when cross-compiling (HOST != BUILD). example: i686-pc-windows-gnu])
- if test "x$enable_rust" = "xyes"; then
- AC_ARG_VAR([RUSTC], [path to the rustc binary])
- AC_CHECK_PROG([RUSTC], [rustc], [rustc],[no])
- if test "x$RUSTC" = "xno"; then
- AC_MSG_ERROR([rustc unavailable but rust integration requested.])
- fi
- AC_ARG_VAR([CARGO], [path to the cargo binary])
- AC_CHECK_PROG([CARGO], [cargo], [cargo],[no])
- if test "x$CARGO" = "xno"; then
- AC_MSG_ERROR([cargo unavailable but rust integration requested.])
- fi
- AC_DEFINE([HAVE_RUST], 1, [have Rust])
- if test "x$enable_fatal_warnings" = "xyes"; then
- RUST_WARN=
- else
- RUST_WARN=#
- fi
- if test "x$enable_cargo_online_mode" = "xyes"; then
- CARGO_ONLINE=
- RUST_DL=#
- else
- CARGO_ONLINE=--frozen
- RUST_DL=
- dnl When we're not allowed to touch the network, we need crate dependencies
- dnl locally available.
- AC_MSG_CHECKING([rust crate dependencies])
- AC_ARG_VAR([TOR_RUST_DEPENDENCIES], [path to directory with local crate mirror])
- if test "x$TOR_RUST_DEPENDENCIES" = "x"; then
- TOR_RUST_DEPENDENCIES="${srcdir}/src/ext/rust/crates"
- fi
- dnl Check whether the path exists before we try to cd into it.
- if test ! -d "$TOR_RUST_DEPENDENCIES"; then
- AC_MSG_ERROR([Rust dependency directory $TOR_RUST_DEPENDENCIES does not exist. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
- ERRORED=1
- fi
- dnl Make the path absolute, since we'll be using it from within a
- dnl subdirectory.
- TOR_RUST_DEPENDENCIES=$(cd "$TOR_RUST_DEPENDENCIES" ; pwd)
- for dep in $rust_crates; do
- if test ! -d "$TOR_RUST_DEPENDENCIES"/"$dep"; then
- AC_MSG_ERROR([Failure to find rust dependency $TOR_RUST_DEPENDENCIES/$dep. Specify a dependency directory using the TOR_RUST_DEPENDENCIES variable or allow cargo to fetch crates using --enable-cargo-online-mode.])
- ERRORED=1
- fi
- done
- if test "x$ERRORED" = "x"; then
- AC_MSG_RESULT([yes])
- fi
- fi
- dnl This is a workaround for #46797
- dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the
- dnl upstream bug is fixed, we can remove this workaround.
- case "$host_os" in
- darwin*)
- TOR_RUST_EXTRA_LIBS="-lresolv"
- ;;
- esac
- dnl For now both MSVC and MinGW rust libraries will output static libs with
- dnl the MSVC naming convention.
- if test "$bwin32" = "true"; then
- tor_rust_static_name=tor_rust.lib
- else
- tor_rust_static_name=libtor_rust.a
- fi
- AC_CANONICAL_BUILD
- if test -n "$TOR_RUST_TARGET"; then
- if test "$host" = "$build"; then
- AC_MSG_ERROR([HOST = BUILD is invalid if TOR_RUST_TARGET is specified, see configure --help for more information.])
- fi
- RUST_TARGET_PROP="target = '$TOR_RUST_TARGET'"
- TOR_RUST_LIB_PATH="src/rust/target/$TOR_RUST_TARGET/release/$tor_rust_static_name"
- else
- if test "$host" != "$build"; then
- AC_MSG_ERROR([TOR_RUST_TARGET must be specified when cross-compiling with Rust enabled.])
- fi
- RUST_TARGET_PROP=
- TOR_RUST_LIB_PATH="src/rust/target/release/$tor_rust_static_name"
- fi
- AC_SUBST(RUST_TARGET_PROP)
- AC_SUBST(TOR_RUST_LIB_PATH)
- AC_SUBST(CARGO_ONLINE)
- AC_SUBST(RUST_WARN)
- AC_SUBST(RUST_DL)
- dnl Let's check the rustc version, too
- AC_MSG_CHECKING([rust version])
- RUSTC_VERSION=`$RUSTC --version`
- RUSTC_VERSION_MAJOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 1`
- RUSTC_VERSION_MINOR=`$RUSTC --version | cut -d ' ' -f 2 | cut -d '.' -f 2`
- if test "x$RUSTC_VERSION_MAJOR" = "x" -o "x$RUSTC_VERSION_MINOR" = "x"; then
- AC_MSG_ERROR([rustc version couldn't be identified])
- fi
- if test "$RUSTC_VERSION_MAJOR" -lt 2 -a "$RUSTC_VERSION_MINOR" -lt 14; then
- AC_MSG_ERROR([rustc must be at least version 1.14])
- fi
- AC_MSG_RESULT([$RUSTC_VERSION])
- fi
- AC_SUBST(TOR_RUST_EXTRA_LIBS)
- AC_SEARCH_LIBS(socket, [socket network])
- AC_SEARCH_LIBS(gethostbyname, [nsl])
- AC_SEARCH_LIBS(dlopen, [dl])
- AC_SEARCH_LIBS(inet_aton, [resolv])
- AC_SEARCH_LIBS(backtrace, [execinfo])
- saved_LIBS="$LIBS"
- AC_SEARCH_LIBS([clock_gettime], [rt])
- if test "$LIBS" != "$saved_LIBS"; then
- # Looks like we need -lrt for clock_gettime().
- have_rt=yes
- fi
- if test "$bwin32" = "false"; then
- AC_SEARCH_LIBS(pthread_create, [pthread])
- AC_SEARCH_LIBS(pthread_detach, [pthread])
- fi
- AM_CONDITIONAL(THREADS_WIN32, test "$bwin32" = "true")
- AM_CONDITIONAL(THREADS_PTHREADS, test "$bwin32" = "false")
- AC_CHECK_FUNCS(
- _NSGetEnviron \
- RtlSecureZeroMemory \
- SecureZeroMemory \
- accept4 \
- backtrace \
- backtrace_symbols_fd \
- eventfd \
- explicit_bzero \
- timingsafe_memcmp \
- flock \
- ftime \
- get_current_dir_name \
- getaddrinfo \
- getifaddrs \
- getpass \
- getrlimit \
- gettimeofday \
- gmtime_r \
- gnu_get_libc_version \
- htonll \
- inet_aton \
- ioctl \
- issetugid \
- llround \
- localtime_r \
- lround \
- memmem \
- memset_s \
- mmap \
- pipe \
- pipe2 \
- prctl \
- readpassphrase \
- rint \
- sigaction \
- socketpair \
- statvfs \
- strlcat \
- strlcpy \
- strnlen \
- strptime \
- strtok_r \
- strtoull \
- sysconf \
- sysctl \
- truncate \
- uname \
- usleep \
- vasprintf \
- _vscprintf
- )
- # Apple messed up when they added some functions: they
- # forgot to decorate them with appropriate AVAILABLE_MAC_OS_VERSION
- # checks.
- # We should only probe for these functions if we are sure that we
- # are not targeting OS X 10.9 or earlier.
- AC_MSG_CHECKING([for a pre-Yosemite OS X build target])
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #ifdef __APPLE__
- # include <AvailabilityMacros.h>
- # ifndef MAC_OS_X_VERSION_10_10
- # define MAC_OS_X_VERSION_10_10 101000
- # endif
- # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
- # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10
- # error "Running on Mac OS X 10.9 or earlier"
- # endif
- # endif
- #endif
- ]], [[]])],
- [on_macos_pre_10_10=no ; AC_MSG_RESULT([no])],
- [on_macos_pre_10_10=yes; AC_MSG_RESULT([yes])])
- if test "$on_macos_pre_10_10" = "no"; then
- AC_CHECK_FUNCS(
- mach_approximate_time \
- )
- fi
- # We should only probe for these functions if we are sure that we
- # are not targeting OSX 10.11 or earlier.
- AC_MSG_CHECKING([for a pre-Sierra OSX build target])
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #ifdef __APPLE__
- # include <AvailabilityMacros.h>
- # ifndef MAC_OS_X_VERSION_10_12
- # define MAC_OS_X_VERSION_10_12 101200
- # endif
- # if defined(MAC_OS_X_VERSION_MIN_REQUIRED)
- # if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
- # error "Running on Mac OSX 10.11 or earlier"
- # endif
- # endif
- #endif
- ]], [[]])],
- [on_macos_pre_10_12=no ; AC_MSG_RESULT([no])],
- [on_macos_pre_10_12=yes; AC_MSG_RESULT([yes])])
- if test "$on_macos_pre_10_12" = "no"; then
- AC_CHECK_FUNCS(
- clock_gettime \
- getentropy \
- )
- fi
- if test "$bwin32" != "true"; then
- AC_CHECK_HEADERS(pthread.h)
- AC_CHECK_FUNCS(pthread_create)
- AC_CHECK_FUNCS(pthread_condattr_setclock)
- fi
- if test "$bwin32" = "true"; then
- AC_CHECK_DECLS([SecureZeroMemory, _getwch], , , [
- #include <windows.h>
- #include <conio.h>
- #include <wchar.h>
- ])
- fi
- AM_CONDITIONAL(BUILD_READPASSPHRASE_C,
- test "x$ac_cv_func_readpassphrase" = "xno" && test "$bwin32" = "false")
- AC_MSG_CHECKING([whether free(NULL) works])
- AC_RUN_IFELSE([AC_LANG_PROGRAM([
- #include <stdlib.h>
- ], [
- char *p = NULL;
- free(p);
- ])],
- [free_null_ok=true; AC_MSG_RESULT(yes)],
- [free_null_ok=false; AC_MSG_RESULT(no)],
- [free_null_ok=cross; AC_MSG_RESULT(cross)])
- if test "$free_null_ok" = "false"; then
- AC_MSG_ERROR([Your libc implementation doesn't allow free(NULL), as required by C99.])
- fi
- dnl ------------------------------------------------------
- dnl Where do you live, libevent? And how do we call you?
- if test "$bwin32" = "true"; then
- TOR_LIB_WS32=-lws2_32
- TOR_LIB_IPHLPAPI=-liphlpapi
- # Some of the cargo-cults recommend -lwsock32 as well, but I don't
- # think it's actually necessary.
- TOR_LIB_GDI=-lgdi32
- TOR_LIB_USERENV=-luserenv
- else
- TOR_LIB_WS32=
- TOR_LIB_GDI=
- TOR_LIB_USERENV=
- fi
- AC_SUBST(TOR_LIB_WS32)
- AC_SUBST(TOR_LIB_GDI)
- AC_SUBST(TOR_LIB_IPHLPAPI)
- AC_SUBST(TOR_LIB_USERENV)
- tor_libevent_pkg_redhat="libevent"
- tor_libevent_pkg_debian="libevent-dev"
- tor_libevent_devpkg_redhat="libevent-devel"
- tor_libevent_devpkg_debian="libevent-dev"
- dnl On Gnu/Linux or any place we require it, we'll add librt to the Libevent
- dnl linking for static builds.
- STATIC_LIBEVENT_FLAGS=""
- if test "$enable_static_libevent" = "yes"; then
- if test "$have_rt" = "yes"; then
- STATIC_LIBEVENT_FLAGS=" -lrt "
- fi
- fi
- TOR_SEARCH_LIBRARY(libevent, $trylibeventdir, [-levent $STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32], [
- #ifdef _WIN32
- #include <winsock2.h>
- #endif
- #include <sys/time.h>
- #include <sys/types.h>
- #include <event2/event.h>], [
- #ifdef _WIN32
- #include <winsock2.h>
- #endif
- struct event_base;
- struct event_base *event_base_new(void);
- void event_base_free(struct event_base *);],
- [
- #ifdef _WIN32
- {WSADATA d; WSAStartup(0x101,&d); }
- #endif
- event_base_free(event_base_new());
- ], [--with-libevent-dir], [/opt/libevent])
- dnl Determine the incantation needed to link libevent.
- save_LIBS="$LIBS"
- save_LDFLAGS="$LDFLAGS"
- save_CPPFLAGS="$CPPFLAGS"
- LIBS="$STATIC_LIBEVENT_FLAGS $TOR_LIB_WS32 $save_LIBS"
- LDFLAGS="$TOR_LDFLAGS_libevent $LDFLAGS"
- CPPFLAGS="$TOR_CPPFLAGS_libevent $CPPFLAGS"
- AC_CHECK_HEADERS(event2/event.h event2/dns.h event2/bufferevent_ssl.h)
- if test "$enable_static_libevent" = "yes"; then
- if test "$tor_cv_library_libevent_dir" = "(system)"; then
- AC_MSG_ERROR("You must specify an explicit --with-libevent-dir=x option when using --enable-static-libevent")
- else
- TOR_LIBEVENT_LIBS="$TOR_LIBDIR_libevent/libevent.a $STATIC_LIBEVENT_FLAGS"
- fi
- else
- if test "x$ac_cv_header_event2_event_h" = "xyes"; then
- AC_SEARCH_LIBS(event_new, [event event_core], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for event_new"))
- AC_SEARCH_LIBS(evdns_base_new, [event event_extra], , AC_MSG_ERROR("libevent2 is installed but linking it failed while searching for evdns_base_new"))
- if test "$ac_cv_search_event_new" != "none required"; then
- TOR_LIBEVENT_LIBS="$ac_cv_search_event_new"
- fi
- if test "$ac_cv_search_evdns_base_new" != "none required"; then
- TOR_LIBEVENT_LIBS="$ac_cv_search_evdns_base_new $TOR_LIBEVENT_LIBS"
- fi
- else
- AC_MSG_ERROR("libevent2 is required but the headers could not be found")
- fi
- fi
- dnl Now check for particular libevent functions.
- AC_CHECK_FUNCS([evutil_secure_rng_set_urandom_device_file \
- evutil_secure_rng_add_bytes \
- ])
- LIBS="$save_LIBS"
- LDFLAGS="$save_LDFLAGS"
- CPPFLAGS="$save_CPPFLAGS"
- dnl Check that libevent is at least at version 2.0.10, the first stable
- dnl release of its series
- CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent"
- AC_MSG_CHECKING([whether Libevent is new enough])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([
- #include <event2/event.h>
- #if !defined(LIBEVENT_VERSION_NUMBER) || LIBEVENT_VERSION_NUMBER < 0x02000a00
- #error
- int x = y(zz);
- #else
- int x = 1;
- #endif
- ])], [ AC_MSG_RESULT([yes]) ],
- [ AC_MSG_RESULT([no])
- AC_MSG_ERROR([Libevent is not new enough. We require 2.0.10-stable or later]) ] )
- LIBS="$save_LIBS"
- LDFLAGS="$save_LDFLAGS"
- CPPFLAGS="$save_CPPFLAGS"
- AC_SUBST(TOR_LIBEVENT_LIBS)
- dnl ------------------------------------------------------
- dnl Where do you live, libm?
- dnl On some platforms (Haiku/BeOS) the math library is
- dnl part of libroot. In which case don't link against lm
- TOR_LIB_MATH=""
- save_LIBS="$LIBS"
- AC_SEARCH_LIBS(pow, [m], , AC_MSG_ERROR([Could not find pow in libm or libc.]))
- if test "$ac_cv_search_pow" != "none required"; then
- TOR_LIB_MATH="$ac_cv_search_pow"
- fi
- LIBS="$save_LIBS"
- AC_SUBST(TOR_LIB_MATH)
- dnl ------------------------------------------------------
- dnl Where do you live, openssl? And how do we call you?
- tor_openssl_pkg_redhat="openssl"
- tor_openssl_pkg_debian="libssl-dev"
- tor_openssl_devpkg_redhat="openssl-devel"
- tor_openssl_devpkg_debian="libssl-dev"
- ALT_openssl_WITHVAL=""
- AC_ARG_WITH(ssl-dir,
- AS_HELP_STRING(--with-ssl-dir=PATH, [obsolete alias for --with-openssl-dir]),
- [
- if test "x$withval" != "xno" && test "x$withval" != "x"; then
- ALT_openssl_WITHVAL="$withval"
- fi
- ])
- AC_MSG_NOTICE([Now, we'll look for OpenSSL >= 1.0.1])
- TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI $TOR_LIB_WS32],
- [#include <openssl/ssl.h>
- char *getenv(const char *);],
- [struct ssl_cipher_st;
- unsigned SSL_CIPHER_get_id(const struct ssl_cipher_st *);
- char *getenv(const char *);],
- dnl This funny-looking test program calls getenv, so that the compiler
- dnl will neither make code that call SSL_CIPHER_get_id(NULL) [producing
- dnl a crash], nor optimize out the call to SSL_CIPHER_get_id().
- dnl We look for SSL_cipher_get_id() because it is present in
- dnl OpenSSL >=1.0.1, because it is not deprecated, and because Tor
- dnl depends on it.
- [if (getenv("THIS_SHOULDNT_BE_SET_X201803")) SSL_CIPHER_get_id((void *)0);], [],
- [/usr/local/opt/openssl /usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl /usr/local /opt/openssl])
- dnl XXXX check for OPENSSL_VERSION_NUMBER == SSLeay()
- if test "$enable_static_openssl" = "yes"; then
- if test "$tor_cv_library_openssl_dir" = "(system)"; then
- AC_MSG_ERROR("You must specify an explicit --with-openssl-dir=x option when using --enable-static-openssl")
- else
- TOR_OPENSSL_LIBS="$TOR_LIBDIR_openssl/libssl.a $TOR_LIBDIR_openssl/libcrypto.a"
- fi
- else
- TOR_OPENSSL_LIBS="-lssl -lcrypto"
- fi
- AC_SUBST(TOR_OPENSSL_LIBS)
- dnl Now check for particular openssl functions.
- save_LIBS="$LIBS"
- save_LDFLAGS="$LDFLAGS"
- save_CPPFLAGS="$CPPFLAGS"
- LIBS="$TOR_OPENSSL_LIBS $LIBS"
- LDFLAGS="$TOR_LDFLAGS_openssl $LDFLAGS"
- CPPFLAGS="$TOR_CPPFLAGS_openssl $CPPFLAGS"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #include <openssl/opensslv.h>
- #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x1000100fL
- #error "too old"
- #endif
- ]], [[]])],
- [ : ],
- [ AC_MSG_ERROR([OpenSSL is too old. We require 1.0.1 or later. You can specify a path to a newer one with --with-openssl-dir.]) ])
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #include <openssl/opensslv.h>
- #include <openssl/evp.h>
- #if defined(OPENSSL_NO_EC) || defined(OPENSSL_NO_ECDH) || defined(OPENSSL_NO_ECDSA)
- #error "no ECC"
- #endif
- #if !defined(NID_X9_62_prime256v1) || !defined(NID_secp224r1)
- #error "curves unavailable"
- #endif
- ]], [[]])],
- [ : ],
- [ AC_MSG_ERROR([OpenSSL is built without full ECC support, including curves P256 and P224. You can specify a path to one with ECC support with --with-openssl-dir.]) ])
- AC_CHECK_MEMBERS([struct ssl_method_st.get_cipher_by_char], , ,
- [#include <openssl/ssl.h>
- ])
- AC_CHECK_FUNCS([ \
- SSL_SESSION_get_master_key \
- SSL_get_server_random \
- SSL_get_client_ciphers \
- SSL_get_client_random \
- SSL_CIPHER_find \
- SSL_CTX_set_security_level \
- TLS_method
- ])
- dnl Check if OpenSSL has scrypt implementation.
- AC_CHECK_FUNCS([ EVP_PBE_scrypt ])
- dnl Check if OpenSSL structures are opaque
- AC_CHECK_MEMBERS([SSL.state], , ,
- [#include <openssl/ssl.h>
- ])
- AC_CHECK_SIZEOF(SHA_CTX, , [AC_INCLUDES_DEFAULT()
- #include <openssl/sha.h>
- ])
- dnl Define the set of checks for KIST scheduler support.
- AC_DEFUN([CHECK_KIST_SUPPORT],[
- dnl KIST needs struct tcp_info and for certain members to exist.
- AC_CHECK_MEMBERS(
- [struct tcp_info.tcpi_unacked, struct tcp_info.tcpi_snd_mss],
- , ,[[#include <netinet/tcp.h>]])
- dnl KIST needs SIOCOUTQNSD to exist for an ioctl call.
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
- #include <linux/sockios.h>
- #ifndef SIOCOUTQNSD
- #error
- #endif
- ])], have_siocoutqnsd=yes, have_siocoutqnsd=no)
- if test "x$have_siocoutqnsd" = "xyes"; then
- if test "x$ac_cv_member_struct_tcp_info_tcpi_unacked" = "xyes"; then
- if test "x$ac_cv_member_struct_tcp_info_tcpi_snd_mss" = "xyes"; then
- have_kist_support=yes
- fi
- fi
- fi
- ])
- dnl Now, trigger the check.
- CHECK_KIST_SUPPORT
- AS_IF([test "x$have_kist_support" = "xyes"],
- [AC_DEFINE(HAVE_KIST_SUPPORT, 1, [Defined if KIST scheduler is supported
- on this system])],
- [AC_MSG_NOTICE([KIST scheduler can't be used. Missing support.])])
- LIBS="$save_LIBS"
- LDFLAGS="$save_LDFLAGS"
- CPPFLAGS="$save_CPPFLAGS"
- dnl ------------------------------------------------------
- dnl Where do you live, zlib? And how do we call you?
- tor_zlib_pkg_redhat="zlib"
- tor_zlib_pkg_debian="zlib1g"
- tor_zlib_devpkg_redhat="zlib-devel"
- tor_zlib_devpkg_debian="zlib1g-dev"
- TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
- [#include <zlib.h>],
- [const char * zlibVersion(void);],
- [zlibVersion();], [--with-zlib-dir],
- [/opt/zlib])
- if test "$enable_static_zlib" = "yes"; then
- if test "$tor_cv_library_zlib_dir" = "(system)"; then
- AC_MSG_ERROR("You must specify an explicit --with-zlib-dir=x option when
- using --enable-static-zlib")
- else
- TOR_ZLIB_LIBS="$TOR_LIBDIR_zlib/libz.a"
- fi
- else
- TOR_ZLIB_LIBS="-lz"
- fi
- AC_SUBST(TOR_ZLIB_LIBS)
- dnl ------------------------------------------------------
- dnl Where we do we find lzma?
- AC_ARG_ENABLE(lzma,
- AS_HELP_STRING(--enable-lzma, [enable support for the LZMA compression scheme.]),
- [case "${enableval}" in
- "yes") lzma=true ;;
- "no") lzma=false ;;
- * ) AC_MSG_ERROR(bad value for --enable-lzma) ;;
- esac], [lzma=auto])
- if test "x$enable_lzma" = "xno"; then
- have_lzma=no;
- else
- PKG_CHECK_MODULES([LZMA],
- [liblzma],
- have_lzma=yes,
- have_lzma=no)
- if test "x$have_lzma" = "xno" ; then
- AC_MSG_WARN([Unable to find liblzma.])
- fi
- fi
- if test "x$have_lzma" = "xyes"; then
- AC_DEFINE(HAVE_LZMA,1,[Have LZMA])
- TOR_LZMA_CFLAGS="${LZMA_CFLAGS}"
- TOR_LZMA_LIBS="${LZMA_LIBS}"
- fi
- AC_SUBST(TOR_LZMA_CFLAGS)
- AC_SUBST(TOR_LZMA_LIBS)
- dnl ------------------------------------------------------
- dnl Where we do we find zstd?
- AC_ARG_ENABLE(zstd,
- AS_HELP_STRING(--enable-zstd, [enable support for the Zstandard compression scheme.]),
- [case "${enableval}" in
- "yes") zstd=true ;;
- "no") zstd=false ;;
- * ) AC_MSG_ERROR(bad value for --enable-zstd) ;;
- esac], [zstd=auto])
- if test "x$enable_zstd" = "xno"; then
- have_zstd=no;
- else
- PKG_CHECK_MODULES([ZSTD],
- [libzstd >= 1.1],
- have_zstd=yes,
- have_zstd=no)
- if test "x$have_zstd" = "xno" ; then
- AC_MSG_WARN([Unable to find libzstd.])
- fi
- fi
- if test "x$have_zstd" = "xyes"; then
- AC_DEFINE(HAVE_ZSTD,1,[Have Zstd])
- TOR_ZSTD_CFLAGS="${ZSTD_CFLAGS}"
- TOR_ZSTD_LIBS="${ZSTD_LIBS}"
- dnl now check for zstd functions
- save_LIBS="$LIBS"
- save_CFLAGS="$CFLAGS"
- LIBS="$LIBS $ZSTD_LIBS"
- CFLAGS="$CFLAGS $ZSTD_CFLAGS"
- AC_CHECK_FUNCS(ZSTD_estimateCStreamSize \
- ZSTD_estimateDCtxSize)
- LIBS="$save_LIBS"
- CFLAGS="$save_CFLAGS"
- fi
- AC_SUBST(TOR_ZSTD_CFLAGS)
- AC_SUBST(TOR_ZSTD_LIBS)
- dnl ----------------------------------------------------------------------
- dnl Check if libcap is available for capabilities.
- tor_cap_pkg_debian="libcap2"
- tor_cap_pkg_redhat="libcap"
- tor_cap_devpkg_debian="libcap-dev"
- tor_cap_devpkg_redhat="libcap-devel"
- AC_CHECK_LIB([cap], [cap_init], [],
- AC_MSG_NOTICE([Libcap was not found. Capabilities will not be usable.])
- )
- AC_CHECK_FUNCS(cap_set_proc)
- dnl ---------------------------------------------------------------------
- dnl Now that we know about our major libraries, we can check for compiler
- dnl and linker hardening options. We need to do this with the libraries known,
- dnl since sometimes the linker will like an option but not be willing to
- dnl use it with a build of a library.
- all_ldflags_for_check="$TOR_LDFLAGS_zlib $TOR_LDFLAGS_openssl $TOR_LDFLAGS_libevent"
- all_libs_for_check="$TOR_ZLIB_LIBS $TOR_LIB_MATH $TOR_LIBEVENT_LIBS $TOR_OPENSSL_LIBS $TOR_SYSTEMD_LIBS $TOR_LIB_WS32 $TOR_LIB_GDI $TOR_LIB_USERENV $TOR_CAP_LIBS"
- CFLAGS_FTRAPV=
- CFLAGS_FWRAPV=
- CFLAGS_ASAN=
- CFLAGS_UBSAN=
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
- #if !defined(__clang__)
- #error
- #endif])], have_clang=yes, have_clang=no)
- if test "x$enable_gcc_hardening" != "xno"; then
- CFLAGS="$CFLAGS -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
- if test "x$have_clang" = "xyes"; then
- TOR_CHECK_CFLAGS(-Qunused-arguments)
- fi
- TOR_CHECK_CFLAGS(-fstack-protector-all, also_link)
- AS_VAR_PUSHDEF([can_compile], [tor_cv_cflags_-fstack-protector-all])
- AS_VAR_PUSHDEF([can_link], [tor_can_link_-fstack-protector-all])
- m4_ifdef([AS_VAR_IF],[
- AS_VAR_IF(can_compile, [yes],
- AS_VAR_IF(can_link, [yes],
- [],
- AC_MSG_ERROR([We tried to build with stack protection; it looks like your compiler supports it but your libc does not provide it. Are you missing libssp? (You can --disable-gcc-hardening to ignore this error.)]))
- )])
- AS_VAR_POPDEF([can_link])
- AS_VAR_POPDEF([can_compile])
- TOR_CHECK_CFLAGS(-Wstack-protector)
- TOR_CHECK_CFLAGS(--param ssp-buffer-size=1)
- if test "$bwin32" = "false" && test "$enable_libfuzzer" != "yes" && test "$enable_oss_fuzz" != "yes"; then
- TOR_CHECK_CFLAGS(-fPIE)
- TOR_CHECK_LDFLAGS(-pie, "$all_ldflags_for_check", "$all_libs_for_check")
- fi
- TOR_TRY_COMPILE_WITH_CFLAGS(-fwrapv, also_link, CFLAGS_FWRAPV="-fwrapv", true)
- fi
- if test "$fragile_hardening" = "yes"; then
- TOR_TRY_COMPILE_WITH_CFLAGS(-ftrapv, also_link, CFLAGS_FTRAPV="-ftrapv", true)
- if test "$tor_cv_cflags__ftrapv" = "yes" && test "$tor_can_link__ftrapv" != "yes"; then
- AC_MSG_WARN([The compiler supports -ftrapv, but for some reason I was not able to link with -ftrapv. Are you missing run-time support? Run-time hardening will not work as well as it should.])
- fi
- if test "$tor_cv_cflags__ftrapv" != "yes"; then
- AC_MSG_ERROR([You requested fragile hardening, but the compiler does not seem to support -ftrapv.])
- fi
- TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=address], also_link, CFLAGS_ASAN="-fsanitize=address", true)
- if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
- AC_MSG_ERROR([The compiler supports -fsanitize=address, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libubsan.*, and with Clang you need libclang_rt.ubsan*])
- fi
- TOR_TRY_COMPILE_WITH_CFLAGS([-fsanitize=undefined], also_link, CFLAGS_UBSAN="-fsanitize=undefined", true)
- if test "$tor_cv_cflags__fsanitize_address" = "yes" && test "$tor_can_link__fsanitize_address" != "yes"; then
- AC_MSG_ERROR([The compiler supports -fsanitize=undefined, but for some reason I was not able to link when using it. Are you missing run-time support? With GCC you need libasan.*, and with Clang you need libclang_rt.ubsan*])
- fi
- TOR_CHECK_CFLAGS([-fno-omit-frame-pointer])
- fi
- dnl Find the correct libraries to add in order to use the sanitizers.
- dnl
- dnl When building Rust, Cargo will run the linker with the -nodefaultlibs
- dnl option, which will prevent the compiler from linking the sanitizer
- dnl libraries it needs. We need to specify them manually.
- dnl
- dnl What's more, we need to specify them in a linker script rather than
- dnl from build.rs: these options aren't allowed in the cargo:rustc-flags
- dnl variable.
- RUST_LINKER_OPTIONS=""
- if test "x$have_clang" = "xyes"; then
- if test "x$CFLAGS_ASAN" != "x"; then
- RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_ASAN"
- fi
- if test "x$CFLAGS_UBSAN" != "x"; then
- RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS $CFLAGS_UBSAN"
- fi
- else
- if test "x$CFLAGS_ASAN" != "x"; then
- RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lasan"
- fi
- if test "x$CFLAGS_UBSAN" != "x"; then
- RUST_LINKER_OPTIONS="$RUST_LINKER_OPTIONS -lubsan"
- fi
- fi
- AC_SUBST(RUST_LINKER_OPTIONS)
- CFLAGS_BUGTRAP="$CFLAGS_FTRAPV $CFLAGS_ASAN $CFLAGS_UBSAN"
- CFLAGS_CONSTTIME="$CFLAGS_FWRAPV"
- mulodi_fixes_ftrapv=no
- if test "$have_clang" = "yes"; then
- saved_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS $CFLAGS_FTRAPV"
- AC_MSG_CHECKING([whether clang -ftrapv can link a 64-bit int multiply])
- AC_LINK_IFELSE([
- AC_LANG_SOURCE([[
- #include <stdint.h>
- #include <stdlib.h>
- int main(int argc, char **argv)
- {
- int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
- * (int64_t)atoi(argv[3]);
- return x == 9;
- } ]])],
- [ftrapv_can_link=yes; AC_MSG_RESULT([yes])],
- [ftrapv_can_link=no; AC_MSG_RESULT([no])])
- if test "$ftrapv_can_link" = "no"; then
- AC_MSG_CHECKING([whether defining __mulodi4 fixes that])
- AC_LINK_IFELSE([
- AC_LANG_SOURCE([[
- #include <stdint.h>
- #include <stdlib.h>
- int64_t __mulodi4(int64_t a, int64_t b, int *overflow) {
- *overflow=0;
- return a;
- }
- int main(int argc, char **argv)
- {
- int64_t x = ((int64_t)atoi(argv[1])) * (int64_t)atoi(argv[2])
- * (int64_t)atoi(argv[3]);
- return x == 9;
- } ]])],
- [mulodi_fixes_ftrapv=yes; AC_MSG_RESULT([yes])],
- [mulodi_fixes_ftrapv=no; AC_MSG_RESULT([no])])
- fi
- CFLAGS="$saved_CFLAGS"
- fi
- AM_CONDITIONAL(ADD_MULODI4, test "$mulodi_fixes_ftrapv" = "yes")
- dnl These cflags add bunches of branches, and we haven't been able to
- dnl persuade ourselves that they're suitable for code that needs to be
- dnl constant time.
- AC_SUBST(CFLAGS_BUGTRAP)
- dnl These cflags are variant ones sutable for code that needs to be
- dnl constant-time.
- AC_SUBST(CFLAGS_CONSTTIME)
- if test "x$enable_linker_hardening" != "xno"; then
- TOR_CHECK_LDFLAGS(-z relro -z now, "$all_ldflags_for_check", "$all_libs_for_check")
- fi
- # For backtrace support
- TOR_CHECK_LDFLAGS(-rdynamic)
- dnl ------------------------------------------------------
- dnl Now see if we have a -fomit-frame-pointer compiler option.
- saved_CFLAGS="$CFLAGS"
- TOR_CHECK_CFLAGS(-fomit-frame-pointer)
- F_OMIT_FRAME_POINTER=''
- if test "$saved_CFLAGS" != "$CFLAGS"; then
- if test "$fragile_hardening" = "yes"; then
- F_OMIT_FRAME_POINTER='-fomit-frame-pointer'
- fi
- fi
- CFLAGS="$saved_CFLAGS"
- AC_SUBST(F_OMIT_FRAME_POINTER)
- dnl ------------------------------------------------------
- dnl If we are adding -fomit-frame-pointer (or if the compiler's doing it
- dnl for us, as GCC 4.6 and later do at many optimization levels), then
- dnl we should try to add -fasynchronous-unwind-tables so that our backtrace
- dnl code will work.
- TOR_CHECK_CFLAGS(-fasynchronous-unwind-tables)
- dnl ============================================================
- dnl Check for libseccomp
- if test "x$enable_seccomp" != "xno"; then
- AC_CHECK_HEADERS([seccomp.h])
- AC_SEARCH_LIBS(seccomp_init, [seccomp])
- fi
- dnl ============================================================
- dnl Check for libscrypt
- if test "x$enable_libscrypt" != "xno"; then
- AC_CHECK_HEADERS([libscrypt.h])
- AC_SEARCH_LIBS(libscrypt_scrypt, [scrypt])
- AC_CHECK_FUNCS([libscrypt_scrypt])
- fi
- dnl ============================================================
- dnl We need an implementation of curve25519.
- dnl set these defaults.
- build_curve25519_donna=no
- build_curve25519_donna_c64=no
- use_curve25519_donna=no
- use_curve25519_nacl=no
- CURVE25519_LIBS=
- dnl The best choice is using curve25519-donna-c64, but that requires
- dnl that we
- AC_CACHE_CHECK([whether we can use curve25519-donna-c64],
- tor_cv_can_use_curve25519_donna_c64,
- [AC_RUN_IFELSE(
- [AC_LANG_PROGRAM([dnl
- #include <stdint.h>
- typedef unsigned uint128_t __attribute__((mode(TI)));
- int func(uint64_t a, uint64_t b) {
- uint128_t c = ((uint128_t)a) * b;
- int ok = ((uint64_t)(c>>96)) == 522859 &&
- (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
- (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
- (((uint64_t)(c))&0xffffffffL) == 0;
- return ok;
- }
- ], [dnl
- int ok = func( ((uint64_t)2000000000) * 1000000000,
- ((uint64_t)1234567890) << 24);
- return !ok;
- ])],
- [tor_cv_can_use_curve25519_donna_c64=yes],
- [tor_cv_can_use_curve25519_donna_c64=no],
- [AC_LINK_IFELSE(
- [AC_LANG_PROGRAM([dnl
- #include <stdint.h>
- typedef unsigned uint128_t __attribute__((mode(TI)));
- int func(uint64_t a, uint64_t b) {
- uint128_t c = ((uint128_t)a) * b;
- int ok = ((uint64_t)(c>>96)) == 522859 &&
- (((uint64_t)(c>>64))&0xffffffffL) == 3604448702L &&
- (((uint64_t)(c>>32))&0xffffffffL) == 2351960064L &&
- (((uint64_t)(c))&0xffffffffL) == 0;
- return ok;
- }
- ], [dnl
- int ok = func( ((uint64_t)2000000000) * 1000000000,
- ((uint64_t)1234567890) << 24);
- return !ok;
- ])],
- [tor_cv_can_use_curve25519_donna_c64=cross],
- [tor_cv_can_use_curve25519_donna_c64=no])])])
- AC_CHECK_HEADERS([crypto_scalarmult_curve25519.h \
- nacl/crypto_scalarmult_curve25519.h])
- AC_CACHE_CHECK([for nacl compiled with a fast curve25519 implementation],
- tor_cv_can_use_curve25519_nacl,
- [tor_saved_LIBS="$LIBS"
- LIBS="$LIBS -lnacl"
- AC_LINK_IFELSE(
- [AC_LANG_PROGRAM([dnl
- #ifdef HAVE_CRYPTO_SCALARMULT_CURVE25519_H
- #include <crypto_scalarmult_curve25519.h>
- #elif defined(HAVE_NACL_CRYPTO_SCALARMULT_CURVE25519_H)
- #include <nacl/crypto_scalarmult_curve25519.h>
- #endif
- #ifdef crypto_scalarmult_curve25519_ref_BYTES
- #error Hey, this is the reference implementation! That's not fast.
- #endif
- ], [
- unsigned char *a, *b, *c; crypto_scalarmult_curve25519(a,b,c);
- ])], [tor_cv_can_use_curve25519_nacl=yes],
- [tor_cv_can_use_curve25519_nacl=no])
- LIBS="$tor_saved_LIBS" ])
- dnl Okay, now we need to figure out which one to actually use. Fall back
- dnl to curve25519-donna.c
- if test "x$tor_cv_can_use_curve25519_donna_c64" != "xno"; then
- build_curve25519_donna_c64=yes
- use_curve25519_donna=yes
- elif test "x$tor_cv_can_use_curve25519_nacl" = "xyes"; then
- use_curve25519_nacl=yes
- CURVE25519_LIBS=-lnacl
- else
- build_curve25519_donna=yes
- use_curve25519_donna=yes
- fi
- if test "x$use_curve25519_donna" = "xyes"; then
- AC_DEFINE(USE_CURVE25519_DONNA, 1,
- [Defined if we should use an internal curve25519_donna{,_c64} implementation])
- fi
- if test "x$use_curve25519_nacl" = "xyes"; then
- AC_DEFINE(USE_CURVE25519_NACL, 1,
- [Defined if we should use a curve25519 from nacl])
- fi
- AM_CONDITIONAL(BUILD_CURVE25519_DONNA,
- test "x$build_curve25519_donna" = "xyes")
- AM_CONDITIONAL(BUILD_CURVE25519_DONNA_C64,
- test "x$build_curve25519_donna_c64" = "xyes")
- AC_SUBST(CURVE25519_LIBS)
- dnl Make sure to enable support for large off_t if available.
- AC_SYS_LARGEFILE
- AC_CHECK_HEADERS([assert.h \
- errno.h \
- fcntl.h \
- signal.h \
- string.h \
- sys/capability.h \
- sys/fcntl.h \
- sys/stat.h \
- sys/time.h \
- sys/types.h \
- time.h \
- unistd.h \
- arpa/inet.h \
- crt_externs.h \
- execinfo.h \
- gnu/libc-version.h \
- grp.h \
- ifaddrs.h \
- inttypes.h \
- limits.h \
- linux/types.h \
- machine/limits.h \
- malloc.h \
- malloc/malloc.h \
- malloc_np.h \
- netdb.h \
- netinet/in.h \
- netinet/in6.h \
- pwd.h \
- readpassphrase.h \
- stdint.h \
- stdatomic.h \
- sys/eventfd.h \
- sys/file.h \
- sys/ioctl.h \
- sys/limits.h \
- sys/mman.h \
- sys/param.h \
- sys/prctl.h \
- sys/random.h \
- sys/resource.h \
- sys/select.h \
- sys/socket.h \
- sys/statvfs.h \
- sys/syscall.h \
- sys/sysctl.h \
- sys/syslimits.h \
- sys/time.h \
- sys/types.h \
- sys/un.h \
- sys/utime.h \
- sys/wait.h \
- syslog.h \
- utime.h])
- AC_CHECK_HEADERS(sys/param.h)
- AC_CHECK_HEADERS(net/if.h, net_if_found=1, net_if_found=0,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif])
- AC_CHECK_HEADERS(net/pfvar.h, net_pfvar_found=1, net_pfvar_found=0,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- #ifdef HAVE_NET_IF_H
- #include <net/if.h>
- #endif
- #ifdef HAVE_NETINET_IN_H
- #include <netinet/in.h>
- #endif])
- AC_CHECK_HEADERS(linux/if.h,[],[],
- [
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- ])
- AC_CHECK_HEADERS(linux/netfilter_ipv4.h,
- linux_netfilter_ipv4=1, linux_netfilter_ipv4=0,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- #ifdef HAVE_LIMITS_H
- #include <limits.h>
- #endif
- #ifdef HAVE_LINUX_TYPES_H
- #include <linux/types.h>
- #endif
- #ifdef HAVE_NETINET_IN6_H
- #include <netinet/in6.h>
- #endif
- #ifdef HAVE_NETINET_IN_H
- #include <netinet/in.h>
- #endif])
- AC_CHECK_HEADERS(linux/netfilter_ipv6/ip6_tables.h,
- linux_netfilter_ipv6_ip6_tables=1, linux_netfilter_ipv6_ip6_tables=0,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- #ifdef HAVE_LIMITS_H
- #include <limits.h>
- #endif
- #ifdef HAVE_LINUX_TYPES_H
- #include <linux/types.h>
- #endif
- #ifdef HAVE_NETINET_IN6_H
- #include <netinet/in6.h>
- #endif
- #ifdef HAVE_NETINET_IN_H
- #include <netinet/in.h>
- #endif
- #ifdef HAVE_LINUX_IF_H
- #include <linux/if.h>
- #endif])
- transparent_ok=0
- if test "x$net_if_found" = "x1" && test "x$net_pfvar_found" = "x1"; then
- transparent_ok=1
- fi
- if test "x$linux_netfilter_ipv4" = "x1"; then
- transparent_ok=1
- fi
- if test "x$linux_netfilter_ipv6_ip6_tables" = "x1"; then
- transparent_ok=1
- fi
- if test "x$transparent_ok" = "x1"; then
- AC_DEFINE(USE_TRANSPARENT, 1, "Define to enable transparent proxy support")
- else
- AC_MSG_NOTICE([Transparent proxy support enabled, but missing headers.])
- fi
- AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_TIME_H
- #include <sys/time.h>
- #endif])
- dnl In case we aren't given a working stdint.h, we'll need to grow our own.
- dnl Watch out.
- AC_CHECK_SIZEOF(int8_t)
- AC_CHECK_SIZEOF(int16_t)
- AC_CHECK_SIZEOF(int32_t)
- AC_CHECK_SIZEOF(int64_t)
- AC_CHECK_SIZEOF(uint8_t)
- AC_CHECK_SIZEOF(uint16_t)
- AC_CHECK_SIZEOF(uint32_t)
- AC_CHECK_SIZEOF(uint64_t)
- AC_CHECK_SIZEOF(intptr_t)
- AC_CHECK_SIZEOF(uintptr_t)
- dnl AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, intptr_t, uintptr_t])
- AC_CHECK_SIZEOF(char)
- AC_CHECK_SIZEOF(short)
- AC_CHECK_SIZEOF(int)
- AC_CHECK_SIZEOF(long)
- AC_CHECK_SIZEOF(long long)
- AC_CHECK_SIZEOF(__int64)
- AC_CHECK_SIZEOF(void *)
- AC_CHECK_SIZEOF(time_t)
- AC_CHECK_SIZEOF(size_t)
- AC_CHECK_SIZEOF(pid_t)
- AC_CHECK_TYPES([uint, u_char, ssize_t])
- AC_PC_FROM_UCONTEXT([:])
- dnl used to include sockaddr_storage, but everybody has that.
- AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t], , ,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_NETINET_IN_H
- #include <netinet/in.h>
- #endif
- #ifdef HAVE_NETINET_IN6_H
- #include <netinet/in6.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- #ifdef _WIN32
- #define _WIN32_WINNT 0x0501
- #define WIN32_LEAN_AND_MEAN
- #include <winsock2.h>
- #include <ws2tcpip.h>
- #endif
- ])
- AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_NETINET_IN_H
- #include <netinet/in.h>
- #endif
- #ifdef HAVE_NETINET_IN6_H
- #include <netinet/in6.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- #ifdef _WIN32
- #define _WIN32_WINNT 0x0501
- #define WIN32_LEAN_AND_MEAN
- #include <winsock2.h>
- #include <ws2tcpip.h>
- #endif
- ])
- AC_CHECK_TYPES([rlim_t], , ,
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_TIME_H
- #include <sys/time.h>
- #endif
- #ifdef HAVE_SYS_RESOURCE_H
- #include <sys/resource.h>
- #endif
- ])
- AX_CHECK_SIGN([time_t],
- [ : ],
- [ : ], [
- #ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_TIME_H
- #include <sys/time.h>
- #endif
- #ifdef HAVE_TIME_H
- #include <time.h>
- #endif
- ])
- if test "$ax_cv_decl_time_t_signed" = "no"; then
- AC_MSG_ERROR([You have an unsigned time_t; Tor does not support that. Please tell the Tor developers about your interesting platform.])
- fi
- AX_CHECK_SIGN([size_t],
- [ tor_cv_size_t_signed=yes ],
- [ tor_cv_size_t_signed=no ], [
- #ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- ])
- if test "$ax_cv_decl_size_t_signed" = "yes"; then
- AC_MSG_ERROR([You have a signed size_t; that's grossly nonconformant.])
- fi
- AX_CHECK_SIGN([enum always],
- [ AC_DEFINE(ENUM_VALS_ARE_SIGNED, 1, [Define if enum is always signed]) ],
- [ : ], [
- enum always { AAA, BBB, CCC };
- ])
- AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- ])
- # We want to make sure that we _don't_ have a cell_t defined, like IRIX does.
- AC_CHECK_SIZEOF(cell_t)
- # Let's see if stdatomic works. (There are some debian clangs that screw it
- # up; see Tor bug #26779 and debian bug 903709.)
- AC_CACHE_CHECK([whether C11 stdatomic.h actually works],
- tor_cv_stdatomic_works,
- [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- #include <stdatomic.h>
- struct x { atomic_size_t y; };
- void try_atomic_init(struct x *xx)
- {
- atomic_init(&xx->y, 99);
- atomic_fetch_add(&xx->y, 1);
- }
- ]])], [tor_cv_stdatomic_works=yes], [tor_cv_stdatomic_works=no])])
- if test "$tor_cv_stdatomic_works" = "yes"; then
- AC_DEFINE(STDATOMIC_WORKS, 1, [Set to 1 if we can compile a simple stdatomic example.])
- elif test "$ac_cv_header_stdatomic_h" = "yes"; then
- AC_MSG_WARN([Your compiler provides the stdatomic.h header, but it doesn't seem to work. I'll pretend it isn't there. If you are using Clang on Debian, maybe this is because of https://bugs.debian.org/903709 ])
- fi
- # Now make sure that NULL can be represented as zero bytes.
- AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
- [AC_RUN_IFELSE([AC_LANG_SOURCE(
- [[#include <stdlib.h>
- #include <string.h>
- #include <stdio.h>
- #ifdef HAVE_STDDEF_H
- #include <stddef.h>
- #endif
- int main () { char *p1,*p2; p1=NULL; memset(&p2,0,sizeof(p2));
- return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
- [tor_cv_null_is_zero=yes],
- [tor_cv_null_is_zero=no],
- [tor_cv_null_is_zero=cross])])
- if test "$tor_cv_null_is_zero" = "cross"; then
- # Cross-compiling; let's hope that the target isn't raving mad.
- AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
- fi
- if test "$tor_cv_null_is_zero" != "no"; then
- AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
- [Define to 1 iff memset(0) sets pointers to NULL])
- fi
- AC_CACHE_CHECK([whether memset(0) sets doubles to 0.0], tor_cv_dbl0_is_zero,
- [AC_RUN_IFELSE([AC_LANG_SOURCE(
- [[#include <stdlib.h>
- #include <string.h>
- #include <stdio.h>
- #ifdef HAVE_STDDEF_H
- #include <stddef.h>
- #endif
- int main () { double d1,d2; d1=0; memset(&d2,0,sizeof(d2));
- return memcmp(&d1,&d2,sizeof(d1))?1:0; }]])],
- [tor_cv_dbl0_is_zero=yes],
- [tor_cv_dbl0_is_zero=no],
- [tor_cv_dbl0_is_zero=cross])])
- if test "$tor_cv_dbl0_is_zero" = "cross"; then
- # Cross-compiling; let's hope that the target isn't raving mad.
- AC_MSG_NOTICE([Cross-compiling: we'll assume that 0.0 can be represented as a sequence of 0-valued bytes.])
- fi
- if test "$tor_cv_dbl0_is_zero" != "no"; then
- AC_DEFINE([DOUBLE_0_REP_IS_ZERO_BYTES], 1,
- [Define to 1 iff memset(0) sets doubles to 0.0])
- fi
- # And what happens when we malloc zero?
- AC_CACHE_CHECK([whether we can malloc(0) safely.], tor_cv_malloc_zero_works,
- [AC_RUN_IFELSE([AC_LANG_SOURCE(
- [[#include <stdlib.h>
- #include <string.h>
- #include <stdio.h>
- #ifdef HAVE_STDDEF_H
- #include <stddef.h>
- #endif
- int main () { return malloc(0)?0:1; }]])],
- [tor_cv_malloc_zero_works=yes],
- [tor_cv_malloc_zero_works=no],
- [tor_cv_malloc_zero_works=cross])])
- if test "$tor_cv_malloc_zero_works" = "cross"; then
- # Cross-compiling; let's hope that the target isn't raving mad.
- AC_MSG_NOTICE([Cross-compiling: we'll assume that we need to check malloc() arguments for 0.])
- fi
- if test "$tor_cv_malloc_zero_works" = "yes"; then
- AC_DEFINE([MALLOC_ZERO_WORKS], 1,
- [Define to 1 iff malloc(0) returns a pointer])
- fi
- # whether we seem to be in a 2s-complement world.
- AC_CACHE_CHECK([whether we are using 2s-complement arithmetic], tor_cv_twos_complement,
- [AC_RUN_IFELSE([AC_LANG_SOURCE(
- [[int main () { int problem = ((-99) != (~99)+1);
- return problem ? 1 : 0; }]])],
- [tor_cv_twos_complement=yes],
- [tor_cv_twos_complement=no],
- [tor_cv_twos_complement=cross])])
- if test "$tor_cv_twos_complement" = "cross"; then
- # Cross-compiling; let's hope that the target isn't raving mad.
- AC_MSG_NOTICE([Cross-compiling: we'll assume that negative integers are represented with two's complement.])
- fi
- if test "$tor_cv_twos_complement" != "no"; then
- AC_DEFINE([USING_TWOS_COMPLEMENT], 1,
- [Define to 1 iff we represent negative integers with
- two's complement])
- fi
- # What does shifting a negative value do?
- AC_CACHE_CHECK([whether right-shift on negative values does sign-extension], tor_cv_sign_extend,
- [AC_RUN_IFELSE([AC_LANG_SOURCE(
- [[int main () { int okay = (-60 >> 8) == -1; return okay ? 0 : 1; }]])],
- [tor_cv_sign_extend=yes],
- [tor_cv_sign_extend=no],
- [tor_cv_sign_extend=cross])])
- if test "$tor_cv_sign_extend" = "cross"; then
- # Cross-compiling; let's hope that the target isn't raving mad.
- AC_MSG_NOTICE([Cross-compiling: we'll assume that right-shifting negative integers causes sign-extension])
- fi
- if test "$tor_cv_sign_extend" != "no"; then
- AC_DEFINE([RSHIFT_DOES_SIGN_EXTEND], 1,
- [Define to 1 iff right-shifting a negative value performs sign-extension])
- fi
- # Is uint8_t the same type as unsigned char?
- AC_CACHE_CHECK([whether uint8_t is the same type as unsigned char], tor_cv_uint8_uchar,
- [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- #include <stdint.h>
- extern uint8_t c;
- unsigned char c;]])],
- [tor_cv_uint8_uchar=yes],
- [tor_cv_uint8_uchar=no],
- [tor_cv_uint8_uchar=cross])])
- if test "$tor_cv_uint8_uchar" = "cross"; then
- AC_MSG_NOTICE([Cross-compiling: we'll assume that uint8_t is the same type as unsigned char])
- fi
- if test "$tor_cv_uint8_uchar" = "no"; then
- AC_MSG_ERROR([We assume that uint8_t is the same type as unsigned char, but your compiler disagrees.])
- fi
- # Whether we should use the dmalloc memory allocation debugging library.
- AC_MSG_CHECKING(whether to use dmalloc (debug memory allocation library))
- AC_ARG_WITH(dmalloc,
- AS_HELP_STRING(--with-dmalloc, [use debug memory allocation library]),
- [if [[ "$withval" = "yes" ]]; then
- dmalloc=1
- AC_MSG_RESULT(yes)
- else
- dmalloc=1
- AC_MSG_RESULT(no)
- fi], [ dmalloc=0; AC_MSG_RESULT(no) ]
- )
- if [[ $dmalloc -eq 1 ]]; then
- AC_CHECK_HEADERS(dmalloc.h, , AC_MSG_ERROR(dmalloc header file not found. Do you have the development files for dmalloc installed?))
- AC_SEARCH_LIBS(dmalloc_malloc, [dmallocth dmalloc], , AC_MSG_ERROR(Libdmalloc library not found. If you enable it you better have it installed.))
- AC_DEFINE(USE_DMALLOC, 1, [Debug memory allocation library])
- AC_CHECK_FUNCS(dmalloc_strdup dmalloc_strndup)
- fi
- AC_ARG_WITH(tcmalloc,
- AS_HELP_STRING(--with-tcmalloc, [use tcmalloc memory allocation library]),
- [ tcmalloc=yes ], [ tcmalloc=no ])
- if test "x$tcmalloc" = "xyes"; then
- LDFLAGS="-ltcmalloc $LDFLAGS"
- fi
- using_custom_malloc=no
- if test "x$enable_openbsd_malloc" = "xyes"; then
- using_custom_malloc=yes
- fi
- if test "x$tcmalloc" = "xyes"; then
- using_custom_malloc=yes
- fi
- if test "$using_custom_malloc" = "no"; then
- AC_CHECK_FUNCS(mallinfo)
- fi
- if test "$using_custom_malloc" = "yes"; then
- # Tell the C compiler not to use the system allocator functions.
- TOR_CHECK_CFLAGS([-fno-builtin-malloc -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-free])
- fi
- # By default, we're going to assume we don't have mlockall()
- # bionic and other platforms have various broken mlockall subsystems.
- # Some systems don't have a working mlockall, some aren't linkable,
- # and some have it but don't declare it.
- AC_CHECK_FUNCS(mlockall)
- AC_CHECK_DECLS([mlockall], , , [
- #ifdef HAVE_SYS_MMAN_H
- #include <sys/mman.h>
- #endif])
- # Allow user to specify an alternate syslog facility
- AC_ARG_WITH(syslog-facility,
- AS_HELP_STRING(--with-syslog-facility=LOG, [syslog facility to use (default=LOG_DAEMON)]),
- syslog_facility="$withval", syslog_facility="LOG_DAEMON")
- AC_DEFINE_UNQUOTED(LOGFACILITY,$syslog_facility,[name of the syslog facility])
- AC_SUBST(LOGFACILITY)
- # Check if we have getresuid and getresgid
- AC_CHECK_FUNCS(getresuid getresgid)
- # Check for gethostbyname_r in all its glorious incompatible versions.
- # (This logic is based on that in Python's configure.in)
- AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
- [Define this if you have any gethostbyname_r()])
- AC_CHECK_FUNC(gethostbyname_r, [
- AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
- OLD_CFLAGS=$CFLAGS
- CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #include <netdb.h>
- ]], [[
- char *cp1, *cp2;
- struct hostent *h1, *h2;
- int i1, i2;
- (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
- ]])],[
- AC_DEFINE(HAVE_GETHOSTBYNAME_R)
- AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
- [Define this if gethostbyname_r takes 6 arguments])
- AC_MSG_RESULT(6)
- ], [
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #include <netdb.h>
- ]], [[
- char *cp1, *cp2;
- struct hostent *h1;
- int i1, i2;
- (void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
- ]])], [
- AC_DEFINE(HAVE_GETHOSTBYNAME_R)
- AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
- [Define this if gethostbyname_r takes 5 arguments])
- AC_MSG_RESULT(5)
- ], [
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #include <netdb.h>
- ]], [[
- char *cp1;
- struct hostent *h1;
- struct hostent_data hd;
- (void) gethostbyname_r(cp1,h1,&hd);
- ]])], [
- AC_DEFINE(HAVE_GETHOSTBYNAME_R)
- AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
- [Define this if gethostbyname_r takes 3 arguments])
- AC_MSG_RESULT(3)
- ], [
- AC_MSG_RESULT(0)
- ])
- ])
- ])
- CFLAGS=$OLD_CFLAGS
- ])
- AC_CACHE_CHECK([whether the C compiler supports __func__],
- tor_cv_have_func_macro,
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([
- #include <stdio.h>
- int main(int c, char **v) { puts(__func__); }])],
- tor_cv_have_func_macro=yes,
- tor_cv_have_func_macro=no))
- AC_CACHE_CHECK([whether the C compiler supports __FUNC__],
- tor_cv_have_FUNC_macro,
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([
- #include <stdio.h>
- int main(int c, char **v) { puts(__FUNC__); }])],
- tor_cv_have_FUNC_macro=yes,
- tor_cv_have_FUNC_macro=no))
- AC_CACHE_CHECK([whether the C compiler supports __FUNCTION__],
- tor_cv_have_FUNCTION_macro,
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([
- #include <stdio.h>
- int main(int c, char **v) { puts(__FUNCTION__); }])],
- tor_cv_have_FUNCTION_macro=yes,
- tor_cv_have_FUNCTION_macro=no))
- AC_CACHE_CHECK([whether we have extern char **environ already declared],
- tor_cv_have_environ_declared,
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #include <stdlib.h>
- int main(int c, char **v) { char **t = environ; }])],
- tor_cv_have_environ_declared=yes,
- tor_cv_have_environ_declared=no))
- if test "$tor_cv_have_func_macro" = "yes"; then
- AC_DEFINE(HAVE_MACRO__func__, 1, [Defined if the compiler supports __func__])
- fi
- if test "$tor_cv_have_FUNC_macro" = "yes"; then
- AC_DEFINE(HAVE_MACRO__FUNC__, 1, [Defined if the compiler supports __FUNC__])
- fi
- if test "$tor_cv_have_FUNCTION_macro" = "yes"; then
- AC_DEFINE(HAVE_MACRO__FUNCTION__, 1,
- [Defined if the compiler supports __FUNCTION__])
- fi
- if test "$tor_cv_have_environ_declared" = "yes"; then
- AC_DEFINE(HAVE_EXTERN_ENVIRON_DECLARED, 1,
- [Defined if we have extern char **environ already declared])
- fi
- # $prefix stores the value of the --prefix command line option, or
- # NONE if the option wasn't set. In the case that it wasn't set, make
- # it be the default, so that we can use it to expand directories now.
- if test "x$prefix" = "xNONE"; then
- prefix=$ac_default_prefix
- fi
- # and similarly for $exec_prefix
- if test "x$exec_prefix" = "xNONE"; then
- exec_prefix=$prefix
- fi
- if test "x$BUILDDIR" = "x"; then
- BUILDDIR=`pwd`
- fi
- AC_SUBST(BUILDDIR)
- AH_TEMPLATE([BUILDDIR],[tor's build directory])
- AC_DEFINE_UNQUOTED(BUILDDIR,"$BUILDDIR")
- if test "x$SRCDIR" = "x"; then
- SRCDIR=$(cd "$srcdir"; pwd)
- fi
- AH_TEMPLATE([SRCDIR],[tor's sourcedir directory])
- AC_DEFINE_UNQUOTED(SRCDIR,"$SRCDIR")
- if test "x$CONFDIR" = "x"; then
- CONFDIR=`eval echo $sysconfdir/tor`
- fi
- AC_SUBST(CONFDIR)
- AH_TEMPLATE([CONFDIR],[tor's configuration directory])
- AC_DEFINE_UNQUOTED(CONFDIR,"$CONFDIR")
- BINDIR=`eval echo $bindir`
- AC_SUBST(BINDIR)
- LOCALSTATEDIR=`eval echo $localstatedir`
- AC_SUBST(LOCALSTATEDIR)
- if test "$bwin32" = "true"; then
- # Test if the linker supports the --nxcompat and --dynamicbase options
- # for Windows
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="-Wl,--nxcompat -Wl,--dynamicbase"
- AC_MSG_CHECKING([whether the linker supports DllCharacteristics])
- AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
- [AC_MSG_RESULT([yes])]
- [save_LDFLAGS="$save_LDFLAGS $LDFLAGS"],
- [AC_MSG_RESULT([no])]
- )
- LDFLAGS="$save_LDFLAGS"
- fi
- # Set CFLAGS _after_ all the above checks, since our warnings are stricter
- # than autoconf's macros like.
- if test "$GCC" = "yes"; then
- # Disable GCC's strict aliasing checks. They are an hours-to-debug
- # accident waiting to happen.
- CFLAGS="$CFLAGS -Wall -fno-strict-aliasing"
- else
- # Override optimization level for non-gcc compilers
- CFLAGS="$CFLAGS -O"
- enable_gcc_warnings=no
- enable_gcc_warnings_advisory=no
- fi
- # Warnings implies advisory-warnings and -Werror.
- if test "$enable_gcc_warnings" = "yes"; then
- enable_gcc_warnings_advisory=yes
- enable_fatal_warnings=yes
- fi
- # OS X Lion started deprecating the system openssl. Let's just disable
- # all deprecation warnings on OS X. Also, to potentially make the binary
- # a little smaller, let's enable dead_strip.
- case "$host_os" in
- darwin*)
- CFLAGS="$CFLAGS -Wno-deprecated-declarations"
- LDFLAGS="$LDFLAGS -dead_strip" ;;
- esac
- # Add some more warnings which we use in development but not in the
- # released versions. (Some relevant gcc versions can't handle these.)
- #
- # Note that we have to do this near the end of the autoconf process, or
- # else we may run into problems when these warnings hit on the testing C
- # programs that autoconf wants to build.
- if test "x$enable_gcc_warnings_advisory" != "xno"; then
- case "$host" in
- *-*-openbsd* | *-*-bitrig*)
- # Some OpenBSD versions (like 4.8) have -Wsystem-headers by default.
- # That's fine, except that the headers don't pass -Wredundant-decls.
- # Therefore, let's disable -Wsystem-headers when we're building
- # with maximal warnings on OpenBSD.
- CFLAGS="$CFLAGS -Wno-system-headers" ;;
- esac
- # GCC4.3 users once report trouble with -Wstrict-overflow=5. GCC5 users
- # have it work better.
- # CFLAGS="$CFLAGS -Wstrict-overflow=1"
- # This warning was added in gcc 4.3, but it appears to generate
- # spurious warnings in gcc 4.4. I don't know if it works in 4.5.
- #CFLAGS="$CFLAGS -Wlogical-op"
- m4_foreach_w([warning_flag], [
- -Waddress
- -Waddress-of-array-temporary
- -Waddress-of-temporary
- -Wambiguous-macro
- -Wanonymous-pack-parens
- -Warc
- -Warc-abi
- -Warc-bridge-casts-disallowed-in-nonarc
- -Warc-maybe-repeated-use-of-weak
- -Warc-performSelector-leaks
- -Warc-repeated-use-of-weak
- -Warray-bounds
- -Warray-bounds-pointer-arithmetic
- -Wasm
- -Wasm-operand-widths
- -Watomic-properties
- -Watomic-property-with-user-defined-accessor
- -Wauto-import
- -Wauto-storage-class
- -Wauto-var-id
- -Wavailability
- -Wbackslash-newline-escape
- -Wbad-array-new-length
- -Wbind-to-temporary-copy
- -Wbitfield-constant-conversion
- -Wbool-conversion
- -Wbool-conversions
- -Wbuiltin-requires-header
- -Wchar-align
- -Wcompare-distinct-pointer-types
- -Wcomplex-component-init
- -Wconditional-type-mismatch
- -Wconfig-macros
- -Wconstant-conversion
- -Wconstant-logical-operand
- -Wconstexpr-not-const
- -Wcustom-atomic-properties
- -Wdangling-field
- -Wdangling-initializer-list
- -Wdate-time
- -Wdelegating-ctor-cycles
- -Wdeprecated-implementations
- -Wdeprecated-register
- -Wdirect-ivar-access
- -Wdiscard-qual
- -Wdistributed-object-modifiers
- -Wdivision-by-zero
- -Wdollar-in-identifier-extension
- -Wdouble-promotion
- -Wduplicate-decl-specifier
- -Wduplicate-enum
- -Wduplicate-method-arg
- -Wduplicate-method-match
- -Wduplicated-cond
- -Wdynamic-class-memaccess
- -Wembedded-directive
- -Wempty-translation-unit
- -Wenum-conversion
- -Wexit-time-destructors
- -Wexplicit-ownership-type
- -Wextern-initializer
- -Wextra
- -Wextra-semi
- -Wextra-tokens
- -Wflexible-array-extensions
- -Wfloat-conversion
- -Wformat-non-iso
- -Wfour-char-constants
- -Wgcc-compat
- -Wglobal-constructors
- -Wgnu-array-member-paren-init
- -Wgnu-designator
- -Wgnu-static-float-init
- -Wheader-guard
- -Wheader-hygiene
- -Widiomatic-parentheses
- -Wignored-attributes
- -Wimplicit-atomic-properties
- -Wimplicit-conversion-floating-point-to-bool
- -Wimplicit-exception-spec-mismatch
- -Wimplicit-fallthrough
- -Wimplicit-fallthrough-per-function
- -Wimplicit-retain-self
- -Wimport-preprocessor-directive-pedantic
- -Wincompatible-library-redeclaration
- -Wincompatible-pointer-types-discards-qualifiers
- -Wincomplete-implementation
- -Wincomplete-module
- -Wincomplete-umbrella
- -Winit-self
- -Wint-conversions
- -Wint-to-void-pointer-cast
- -Winteger-overflow
- -Winvalid-constexpr
- -Winvalid-iboutlet
- -Winvalid-noreturn
- -Winvalid-pp-token
- -Winvalid-source-encoding
- -Winvalid-token-paste
- -Wknr-promoted-parameter
- -Wlarge-by-value-copy
- -Wliteral-conversion
- -Wliteral-range
- -Wlocal-type-template-args
- -Wlogical-op
- -Wloop-analysis
- -Wmain-return-type
- -Wmalformed-warning-check
- -Wmethod-signatures
- -Wmicrosoft
- -Wmicrosoft-exists
- -Wmismatched-parameter-types
- -Wmismatched-return-types
- -Wmissing-field-initializers
- -Wmissing-format-attribute
- -Wmissing-noreturn
- -Wmissing-selector-name
- -Wmissing-sysroot
- -Wmissing-variable-declarations
- -Wmodule-conflict
- -Wnested-anon-types
- -Wnewline-eof
- -Wnon-literal-null-conversion
- -Wnon-pod-varargs
- -Wnonportable-cfstrings
- -Wnormalized=nfkc
- -Wnull-arithmetic
- -Wnull-character
- -Wnull-conversion
- -Wnull-dereference
- -Wout-of-line-declaration
- -Wover-aligned
- -Woverlength-strings
- -Woverride-init
- -Woverriding-method-mismatch
- -Wpointer-type-mismatch
- -Wpredefined-identifier-outside-function
- -Wprotocol-property-synthesis-ambiguity
- -Wreadonly-iboutlet-property
- -Wreadonly-setter-attrs
- -Wreceiver-expr
- -Wreceiver-forward-class
- -Wreceiver-is-weak
- -Wreinterpret-base-class
- -Wrequires-super-attribute
- -Wreserved-user-defined-literal
- -Wreturn-stack-address
- -Wsection
- -Wselector-type-mismatch
- -Wsentinel
- -Wserialized-diagnostics
- -Wshadow
- -Wshift-count-negative
- -Wshift-count-overflow
- -Wshift-negative-value
- -Wshift-overflow=2
- -Wshift-sign-overflow
- -Wshorten-64-to-32
- -Wsizeof-array-argument
- -Wsource-uses-openmp
- -Wstatic-float-init
- -Wstatic-in-inline
- -Wstatic-local-in-inline
- -Wstrict-overflow=1
- -Wstring-compare
- -Wstring-conversion
- -Wstrlcpy-strlcat-size
- -Wstrncat-size
- -Wsuggest-attribute=format
- -Wsuggest-attribute=noreturn
- -Wsuper-class-method-mismatch
- -Wswitch-bool
- -Wsync-nand
- -Wtautological-constant-out-of-range-compare
- -Wtentative-definition-incomplete-type
- -Wtrampolines
- -Wtype-safety
- -Wtypedef-redefinition
- -Wtypename-missing
- -Wundefined-inline
- -Wundefined-internal
- -Wundefined-reinterpret-cast
- -Wunicode
- -Wunicode-whitespace
- -Wunknown-warning-option
- -Wunnamed-type-template-args
- -Wunneeded-member-function
- -Wunsequenced
- -Wunsupported-visibility
- -Wunused-but-set-parameter
- -Wunused-but-set-variable
- -Wunused-command-line-argument
- -Wunused-const-variable=2
- -Wunused-exception-parameter
- -Wunused-local-typedefs
- -Wunused-member-function
- -Wunused-sanitize-argument
- -Wunused-volatile-lvalue
- -Wuser-defined-literals
- -Wvariadic-macros
- -Wvector-conversion
- -Wvector-conversions
- -Wvexing-parse
- -Wvisibility
- -Wvla-extension
- -Wzero-length-array
- ], [ TOR_CHECK_CFLAGS([warning_flag]) ])
- dnl We should re-enable this in some later version. Clang doesn't
- dnl mind, but it causes trouble with GCC.
- dnl -Wstrict-overflow=2
- dnl These seem to require annotations that we don't currently use,
- dnl and they give false positives in our pthreads wrappers. (Clang 4)
- dnl -Wthread-safety
- dnl -Wthread-safety-analysis
- dnl -Wthread-safety-attributes
- dnl -Wthread-safety-beta
- dnl -Wthread-safety-precise
- CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith"
- CFLAGS="$CFLAGS -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings"
- CFLAGS="$CFLAGS -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2"
- CFLAGS="$CFLAGS -Wwrite-strings"
- CFLAGS="$CFLAGS -Wnested-externs -Wbad-function-cast -Wswitch-enum"
- CFLAGS="$CFLAGS -Waggregate-return -Wpacked -Wunused"
- CFLAGS="$CFLAGS -Wunused-parameter "
- # These interfere with building main() { return 0; }, which autoconf
- # likes to use as its default program.
- CFLAGS="$CFLAGS -Wold-style-definition -Wmissing-declarations"
- if test "$tor_cv_cflags__Wnull_dereference" = "yes"; then
- AC_DEFINE([HAVE_CFLAG_WNULL_DEREFERENCE], 1, [True if we have -Wnull-dereference])
- fi
- if test "$tor_cv_cflags__Woverlength_strings" = "yes"; then
- AC_DEFINE([HAVE_CFLAG_WOVERLENGTH_STRINGS], 1, [True if we have -Woverlength-strings])
- fi
- if test "$tor_cv_cflags__warn_unused_const_variable_2" = "yes"; then
- AC_DEFINE([HAVE_CFLAG_WUNUSED_CONST_VARIABLE], 1, [True if we have -Wunused-const-variable])
- fi
- if test "x$enable_fatal_warnings" = "xyes"; then
- # I'd like to use TOR_CHECK_CFLAGS here, but I can't, since the
- # default autoconf programs are full of errors.
- CFLAGS="$CFLAGS -Werror"
- fi
- fi
- if test "$enable_coverage" = "yes" && test "$have_clang" = "no"; then
- case "$host_os" in
- darwin*)
- AC_MSG_WARN([Tried to enable coverage on OSX without using the clang compiler. This might not work! If coverage fails, use CC=clang when configuring with --enable-coverage.])
- esac
- fi
- CPPFLAGS="$CPPFLAGS $TOR_CPPFLAGS_libevent $TOR_CPPFLAGS_openssl $TOR_CPPFLAGS_zlib"
- AC_CONFIG_FILES([
- Doxyfile
- Makefile
- config.rust
- link_rust.sh
- contrib/dist/suse/tor.sh
- contrib/operator-tools/tor.logrotate
- contrib/dist/tor.sh
- contrib/dist/torctl
- contrib/dist/tor.service
- src/config/torrc.sample
- src/config/torrc.minimal
- src/rust/.cargo/config
- scripts/maint/checkOptionDocs.pl
- scripts/maint/updateVersions.pl
- ])
- if test "x$asciidoc" = "xtrue" && test "$ASCIIDOC" = "none"; then
- regular_mans="doc/tor doc/tor-gencert doc/tor-resolve doc/torify"
- for file in $regular_mans ; do
- if ! [[ -f "$srcdir/$file.1.in" ]] || ! [[ -f "$srcdir/$file.html.in" ]] ; then
- echo "==================================";
- echo;
- echo "Building Tor has failed since manpages cannot be built.";
- echo;
- echo "You need asciidoc installed to be able to build the manpages.";
- echo "To build without manpages, use the --disable-asciidoc argument";
- echo "when calling configure.";
- echo;
- echo "==================================";
- exit 1;
- fi
- done
- fi
- if test "$fragile_hardening" = "yes"; then
- AC_MSG_WARN([
- ============
- Warning! Building Tor with --enable-fragile-hardening (also known as
- --enable-expensive-hardening) makes some kinds of attacks harder, but makes
- other kinds of attacks easier. A Tor instance build with this option will be
- somewhat less vulnerable to remote code execution, arithmetic overflow, or
- out-of-bounds read/writes... but at the cost of becoming more vulnerable to
- denial of service attacks. For more information, see
- https://trac.torproject.org/projects/tor/wiki/doc/TorFragileHardening
- ============
- ])
- fi
- AC_OUTPUT
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