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| author | Alon Bar-Lev <alon.barlev@gmail.com> | 2013-07-27 20:22:00 +0000 |
|---|---|---|
| committer | Stef Walter <stef@thewalter.net> | 2013-07-29 10:41:59 +0200 |
| commit | cdb1a88ba117d92991298445e5db51b6e1f5ce3c (patch) | |
| tree | c3748c1e71bcd06610446ecc47dffd378d1f76c2 | |
| parent | 68beea0bca786730019df002fa625986a4d65d91 (diff) | |
do not assume dead code existence in autoconf checks
when compiler optimize source, it removes dead code so a linkage error
in these cases are not visisble.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
https://bugs.freedesktop.org/show_bug.cgi?id=67413
| -rw-r--r-- | configure.ac | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 64f39c6..e57272b 100644 --- a/configure.ac +++ b/configure.ac @@ -100,9 +100,9 @@ if test "$os_unix" = "yes"; then AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no])]) AC_CHECK_DECLS([__progname]) - AC_LINK_IFELSE([AC_LANG_SOURCE([extern char *__progname; void main() { }])], + AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern char *__progname;]], [[__progname=(char*)0;]])], [AC_DEFINE(HAVE___PROGNAME, [1], [Whether __progname available])]) - AC_LINK_IFELSE([AC_LANG_SOURCE([extern int __libc_enable_secure; void main() { }])], + AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern int __libc_enable_secure;]], [[__libc_enable_secure = 0;]])], [AC_DEFINE(HAVE___LIBC_ENABLE_SECURE, [1], [Whether __libc_enable_secure available])]) fi |