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| author | Alon Bar-Lev <alon.barlev@gmail.com> | 2013-07-29 10:37:41 +0200 |
|---|---|---|
| committer | Stef Walter <stef@thewalter.net> | 2013-07-29 10:37:41 +0200 |
| commit | 0f8d932ed371c967f9b179fe24ecc8883d3f2798 (patch) | |
| tree | b568b05e97936f1d2c186429f897417b4443ff94 | |
| parent | 3896c32e4acfbcb99ec1d39336ab156f38f540db (diff) | |
| download | p11-kit-0f8d932ed371c967f9b179fe24ecc8883d3f2798.tar.gz | |
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>
| -rw-r--r-- | configure.ac | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index df66c90..fefccf2 100644 --- a/configure.ac +++ b/configure.ac @@ -99,7 +99,7 @@ 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])]) fi |