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tests: beware of compilers that do not support POSIXLY_CORRECT

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Running "maintainer-release-check" on OS X with Clang 2.9 fails,
because "clang-mp-2.9 -o test -g test.c" launches "/usr/bin/dsymutil
test -o test.dSYM" which fails with "error: unable to open executable
'-o'".

* m4/c-working.m4 (BISON_CHECK_WITH_POSIXLY_CORRECT)
(BISON_C_COMPILER_POSIXLY_CORRECT): New.
* configure.ac: Use the latter.
* tests/atlocal.in (POSIXLY_CORRECT_IS_EXPORTED): New.
* tests/local.at (AT_BISON_CHECK_WARNINGS_): Use it instead of computing its
value each time.
(AT_QUELL_VALGRIND): Skip tests that cannot work because of compilers
that do not support POSIXLY_CORRECT.
This commit is contained in:
Akim Demaille
2012-11-07 17:23:06 +01:00
parent 5a000c51f7
commit 0a36880ad1
4 changed files with 60 additions and 6 deletions
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44
m4/c-working.m4
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@@ -25,3 +25,47 @@ AC_DEFUN([BISON_TEST_FOR_WORKING_C_COMPILER], [
[],
[AC_MSG_FAILURE([cannot compile a simple C program])])
])
# BISON_CHECK_WITH_POSIXLY_CORRECT(CODE)
# --------------------------------------
# Run the Autoconf CODE with POSIXLY_CORRECT set to 1, and restored to
# its initial value afterwards.
AC_DEFUN([BISON_CHECK_WITH_POSIXLY_CORRECT],
[gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }'
case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" </dev/null` in
xx) gl_had_POSIXLY_CORRECT=exported ;;
x) gl_had_POSIXLY_CORRECT=yes ;;
*) gl_had_POSIXLY_CORRECT= ;;
esac
POSIXLY_CORRECT=1
export POSIXLY_CORRECT
$1
case $gl_had_POSIXLY_CORRECT in
exported) ;;
yes) AS_UNSET([POSIXLY_CORRECT]); POSIXLY_CORRECT=1 ;;
*) AS_UNSET([POSIXLY_CORRECT]) ;;
esac
])
# BISON_C_COMPILER_POSIXLY_CORRECT
# --------------------------------
# Whether the compiler supports -g in POSIXLY_CORRECT mode. clang-2.9
# on OS X does not, because "clang-mp-2.9 -o test -g test.c" launches
# "/usr/bin/dsymutil test -o test.dSYM" which fails with "error:
# unable to open executable '-o'".
#
# Sets C_COMPILER_POSIXLY_CORRECT to true/false.
AC_DEFUN([BISON_C_COMPILER_POSIXLY_CORRECT],
[AC_CACHE_CHECK([whether $CC supports POSIXLY_CORRECT=1],
[bison_cv_cc_supports_posixly_correct],
[BISON_CHECK_WITH_POSIXLY_CORRECT(
[AC_LANG_PUSH([C])
AC_LINK_IFELSE([AC_LANG_PROGRAM],
[bison_cv_cc_supports_posixly_correct=yes],
[bison_cv_cc_supports_posixly_correct=no])
AC_LANG_POP([C])])])
case $bison_cv_cc_supports_posixly_correct in
yes) AC_SUBST([C_COMPILER_POSIXLY_CORRECT], [true]) ;;
no) AC_SUBST([C_COMPILER_POSIXLY_CORRECT], [false]);;
esac
])