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mirror of https://github.com/samba-team/samba.git synced 2024-12-24 21:34:56 +03:00

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
This commit is contained in:
Rusty Russell 2011-07-05 13:08:09 +09:30
parent 73140a11c4
commit 4e63ac6191

View File

@ -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; }
],