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| author | Guillem Jover | 2009-10-08 13:40:11 +0200 |
|---|---|---|
| committer | Karel Zak | 2009-10-09 15:16:25 +0200 |
| commit | 869829e457cf7ca79c7f3f997088af8cb70aff77 (patch) | |
| tree | 3cd165e9c53444ba2a5ee39869ff4582899bec84 /configure.ac | |
| parent | build-sys: enable silent rules if automake >= 1.11 (diff) | |
| download | kernel-qcow2-util-linux-869829e457cf7ca79c7f3f997088af8cb70aff77.tar.gz kernel-qcow2-util-linux-869829e457cf7ca79c7f3f997088af8cb70aff77.tar.xz kernel-qcow2-util-linux-869829e457cf7ca79c7f3f997088af8cb70aff77.zip | |
build-sys: check for union semun instead of using _SEM_SEMUN_UNDEFINED
Older versions of glibc used to declare ‘union semun’ in <sys/sem.h>,
but POSIX.1-2001 requires the caller to declare it instead. Later
versions of glibc started defining _SEM_SEMUN_UNDEFINED to note that
the union was not being declared, but conforming systems are not
required to define that macro (e.g. FreeBSD). As a side effect we get
rid of some obsolete __GNU_LIBRARY__ macro usage.
[kzak@redhat.com: - use #ifndef]
Signed-off-by: Guillem Jover <guillem@hadrons.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index ed3c3b07c..7b11ab1fa 100644 --- a/configure.ac +++ b/configure.ac @@ -469,6 +469,11 @@ printf(__progname); ]) +AC_CHECK_TYPES([union semun], [], [], [[ +#include <sys/sem.h> +]]) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <wchar.h> #include <wctype.h> |