Stop trying to generate test scripts via autoconf substitution.

Use environment variables instead. This repairs 'make distcheck',
which was running into trouble when it tried to chmod the generated
scripts.

Fixes 17148.

changes/testscripts

@@ -0,0 +1,6 @@
+  o Testing:
+   - Use environment variables rather than autoconf substitutions to send
+     variables from the build system to the test scripts. This change should
+     be easier to maintain, and cause 'make distcheck' to work better than
+     before. Fixes bug 17148.
+

configure.ac

@@ -1647,9 +1647,6 @@ AC_CONFIG_FILES([
         src/config/torrc.minimal
         scripts/maint/checkOptionDocs.pl
         scripts/maint/updateVersions.pl
-        src/test/test_zero_length_keys.sh
-        src/test/test_ntor.sh
-        src/test/test_bt.sh
 ])
 
 if test x$asciidoc = xtrue && test "$ASCIIDOC" = "none" ; then

src/test/include.am

@@ -1,4 +1,9 @@
 
+export PYTHON=@PYTHON@
+export SHELL=@SHELL@
+export abs_top_srcdir
+export builddir
+
 TESTSCRIPTS = src/test/test_zero_length_keys.sh
 
 if USEPYTHON
@@ -16,18 +21,11 @@ TEST_CHUTNEY_FLAVORS_IPV6 = bridges+ipv6-min ipv6-exit-min
 TEST_CHUTNEY_FLAVORS_MIXED = mixed
 
 ### This is a lovely feature, but it requires automake >= 1.12, and Tor
-###  doesn't require that yet.  Below is a kludge to work around.
+###  doesn't require that yet.
 ###
 # TEST_EXTENSIONS = .sh
 # SH_LOG_COMPILER = $(SHELL)
 
-check-am: set-test-permissions
-
-.PHONY: set-test-permissions
-set-test-permissions: $(TESTSCRIPTS)
-	$(AM_V_at)chmod u+x $(TESTSCRIPTS)
-
-
 noinst_PROGRAMS+= src/test/bench
 if UNITTESTS_ENABLED
 noinst_PROGRAMS+= \
@@ -194,4 +192,6 @@ EXTRA_DIST += \
 	src/test/ntor_ref.py \
 	src/test/slownacl_curve25519.py \
 	src/test/zero_length_keys.sh \
-	src/test/test_keygen.sh
+	src/test/test_keygen.sh \
+        src/test/test_zero_length_keys.sh \
+        src/test/test_ntor.sh src/test/test_bt.sh

src/test/test_bt.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+# Test backtrace functionality.
+
+exitcode=0
+
+${builddir:-.}/src/test/test-bt-cl assert | ${PYTHON:-python} "${abs_top_srcdir:-.}/src/test/bt_test.py" || exitcode=1
+${builddir:-.}/src/test/test-bt-cl crash  | ${PYTHON:-python} "${abs_top_srcdir:-.}/src/test/bt_test.py" || exitcode=1
+
+exit ${exitcode}

src/test/test_bt.sh.in

@@ -1,9 +0,0 @@
-#!@SHELL@
-# Test backtrace functionality.
-
-exitcode=0
-
-@builddir@/src/test/test-bt-cl assert | @PYTHON@ @abs_top_srcdir@/src/test/bt_test.py || exitcode=1
-@builddir@/src/test/test-bt-cl crash | @PYTHON@ @abs_top_srcdir@/src/test/bt_test.py || exitcode=1
-
-exit ${exitcode}

src/test/test_ntor.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+# Validate Tor's ntor implementation.
+
+exitcode=0
+
+${PYTHON:-python} "${abs_top_srcdir:-.}/src/test/ntor_ref.py" test-tor || exitcode=1
+${PYTHON:-python} "${abs_top_srcdir:-.}/src/test/ntor_ref.py" self-test || exitcode=1
+
+exit ${exitcode}

src/test/test_ntor.sh.in

@@ -1,9 +0,0 @@
-#!@SHELL@
-# Validate Tor's ntor implementation.
-
-exitcode=0
-
-@PYTHON@ @abs_top_srcdir@/src/test/ntor_ref.py test-tor || exitcode=1
-@PYTHON@ @abs_top_srcdir@/src/test/ntor_ref.py self-test || exitcode=1
-
-exit ${exitcode}

src/test/test_zero_length_keys.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+# Check that tor regenerates keys when key files are zero-length
+
+exitcode=0
+
+${SHELL:-sh} "${abs_top_srcdir:-.}/src/test/zero_length_keys.sh" "${builddir:-.}/src/or/tor" -z || exitcode=1
+${SHELL:-sh} "${abs_top_srcdir:-.}/src/test/zero_length_keys.sh" "${builddir:-.}/src/or/tor" -d || exitcode=1
+${SHELL:-sh} "${abs_top_srcdir:-.}/src/test/zero_length_keys.sh" "${builddir:-.}/src/or/tor" -e || exitcode=1
+
+exit ${exitcode}

src/test/test_zero_length_keys.sh.in

@@ -1,10 +0,0 @@
-#!@SHELL@
-# Check that tor regenerates keys when key files are zero-length
-
-exitcode=0
-
-@SHELL@ @abs_top_srcdir@/src/test/zero_length_keys.sh "@builddir@/src/or/tor" -z || exitcode=1
-@SHELL@ @abs_top_srcdir@/src/test/zero_length_keys.sh "@builddir@/src/or/tor" -d || exitcode=1
-@SHELL@ @abs_top_srcdir@/src/test/zero_length_keys.sh "@builddir@/src/or/tor" -e || exitcode=1
-
-exit ${exitcode}