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| author | Rusty Russell <rusty@rustcorp.com.au> | 2011-07-05 13:08:09 +0930 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2011-07-05 07:08:55 +0200 |
| commit | 4e63ac6191e55bc602c7cba6e12e01f35985c6b1 (patch) | |
| tree | 25d4d5eddf4fc284b8dc7c9692d0e24652dc4252 /lib/ccan/libccan.m4 | |
| parent | 73140a11c40cbef81b9af6363a72fdba2077222d (diff) | |
| download | samba-4e63ac6191e55bc602c7cba6e12e01f35985c6b1.tar.gz samba-4e63ac6191e55bc602c7cba6e12e01f35985c6b1.tar.xz samba-4e63ac6191e55bc602c7cba6e12e01f35985c6b1.zip | |
ccan: fix configure tests for __builtin_clz etc.
It's not enough to compile-test them: Michael Adam points out that nonexistant
functions merely cause a warning. We have to try to link them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Tue Jul 5 07:08:55 CEST 2011 on sn-devel-104
Diffstat (limited to 'lib/ccan/libccan.m4')
| -rw-r--r-- | lib/ccan/libccan.m4 | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/lib/ccan/libccan.m4 b/lib/ccan/libccan.m4 index 92676c3184..df38d3b962 100644 --- a/lib/ccan/libccan.m4 +++ b/lib/ccan/libccan.m4 @@ -135,7 +135,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_clz], samba_cv_builtin_clz, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [int main(void) { return __builtin_clz(1) == (sizeof(int)*8 - 1) ? 0 : 1; }], @@ -150,7 +150,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_clzl], samba_cv_builtin_clzl, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [int main(void) { return __builtin_clzl(1) == (sizeof(int)*8 - 1) ? 0 : 1; }], @@ -164,7 +164,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_clzll], samba_cv_builtin_clzll, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [int main(void) { return __builtin_clzll(1) == (sizeof(int)*8 - 1) ? 0 : 1; }], @@ -179,7 +179,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_constant_p], samba_cv_builtin_constant_p, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [int main(void) { return __builtin_constant_p(1) ? 0 : 1; }], @@ -194,7 +194,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_expect], samba_cv_builtin_expect, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [int main(void) { return __builtin_expect(main != 0) ? 0 : 1; }], @@ -209,7 +209,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_popcountl], samba_cv_builtin_popcountl, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [int main(void) { return __builtin_popcountl(255L) == 8 ? 0 : 1; }], @@ -224,7 +224,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_types_compatible_p], samba_cv_builtin_types_compatible_p, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [int main(void) { return __builtin_types_compatible_p(char *, int) ? 1 : 0; }], @@ -255,7 +255,7 @@ fi AC_CACHE_CHECK([whether we have __builtin_have_isblank], samba_cv_builtin_have_isblank, [ - AC_COMPILE_IFELSE( + AC_LINK_IFELSE( [#include <ctype.h> int main(void) { return isblank(' ') ? 0 : 1; } ], |