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@@ -169,6 +169,7 @@ if test $ac_cv_libevent_dir != "(system)"; then
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fi
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fi
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+if test -z "$CROSS_COMPILE"; then
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AC_CACHE_CHECK([whether we need extra options to link libevent],
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ac_cv_libevent_linker_option, [
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saved_LDFLAGS="$LDFLAGS"
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@@ -200,6 +201,7 @@ AC_CACHE_CHECK([whether we need extra options to link libevent],
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if test $ac_cv_libevent_linker_option != '(none)' ; then
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LDFLAGS="$ac_cv_libevent_linker_option $LDFLAGS"
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fi
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+fi
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dnl ------------------------------------------------------
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dnl Where do you live, openssl? And how do we call you?
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@@ -266,6 +268,8 @@ if test "$ac_cv_openssl_dir" != "(system)"; then
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fi
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fi
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+if test -z $CROSS_COMPILE
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+then
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AC_CACHE_CHECK([whether we need extra options to link OpenSSL],
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ac_cv_openssl_linker_option, [
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saved_LDFLAGS="$LDFLAGS"
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@@ -325,6 +329,7 @@ return (OPENSSL_VERSION_NUMBER == SSLeay()) == 0;
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if test "$ac_cv_openssl_linker_option" != '(none)' ; then
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LDFLAGS="$ac_cv_openssl_linker_option $LDFLAGS"
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fi
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+fi
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dnl Make sure to enable support for large off_t if avalable.
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@@ -377,11 +382,18 @@ AC_CHECK_SIZEOF(long long)
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AC_CHECK_SIZEOF(__int64)
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AC_CHECK_SIZEOF(void *)
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AC_CHECK_SIZEOF(time_t)
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+
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+if test -z "$CROSS_COMPILE"; then
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AC_CACHE_CHECK([whether time_t is signed], tor_cv_time_t_signed, [
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AC_TRY_RUN([
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int main(int c, char**v) { if (((time_t)-1)<0) return 1; else return 0; }],
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tor_cv_time_t_signed=no, tor_cv_time_t_signed=yes)
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])
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+else
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+ # Cross-compiling; let's hope the target platform isn't loony.
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+ AC_MSG_NOTICE([Cross compiling: assuming that time_t is signed.])
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+ tor_cv_time_t_signed=yes
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+fi
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if test $tor_cv_time_t_signed = yes; then
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AC_DEFINE([TIME_T_IS_SIGNED], 1,
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@@ -399,6 +411,7 @@ AC_CHECK_SIZEOF(socklen_t, , [AC_INCLUDES_DEFAULT()
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AC_CHECK_SIZEOF(cell_t)
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# Now make sure that NULL can be represented as zero bytes.
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+if test -z "$CROSS_COMPILE"; then
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AC_CACHE_CHECK([whether memset(0) sets pointers to NULL], tor_cv_null_is_zero,
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[AC_RUN_IFELSE([AC_LANG_SOURCE(
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[[#include <stdlib.h>
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@@ -413,6 +426,12 @@ return memcmp(&p1,&p2,sizeof(char*))?1:0; }]])],
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[tor_cv_null_is_zero=no],
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[tor_cv_null_is_zero=cross])])
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+else
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+ # Cross-compiling; let's hope that the target isn't raving mad.
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+ AC_MSG_NOTICE([Cross-compiling: we'll assume that NULL is represented as a sequence of 0-valued bytes.])
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+ tor_cv_null_is_zero=yes
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+fi
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+
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if test $tor_cv_null_is_zero = yes; then
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AC_DEFINE([NULL_REP_IS_ZERO_BYTES], 1,
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[Define to 1 iff memset(0) sets pointers to NULL])
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