[vlc-devel] [PATCH] Mac: Add a detection for posix_memalign and a work-around

[Jean-Baptiste Kempf]

This should fix compilation on MacOS X sdk-10.5
---
 configure.ac         |    2 +-
 include/vlc_common.h |    4 ++++
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/configure.ac b/configure.ac
index 854753d..90d957f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -562,7 +562,7 @@ need_libc=false
 
 dnl Check for usual libc functions
 AC_CHECK_DECLS([nanosleep],,,[#include <time.h>])
-AC_CHECK_FUNCS([daemon fcntl fstatvfs fork getenv getpwuid_r if_nameindex if_nametoindex isatty lstat memalign mmap openat pread posix_fadvise posix_madvise setlocale stricmp strnicmp uselocale])
+AC_CHECK_FUNCS([daemon fcntl fstatvfs fork getenv getpwuid_r if_nameindex if_nametoindex isatty lstat memalign mmap openat pread posix_fadvise posix_madvise posix_memalign setlocale stricmp strnicmp uselocale])
 AC_REPLACE_FUNCS([asprintf atof atoll dirfd fdopendir flockfile fsync getdelim getpid gmtime_r lldiv localtime_r nrand48 rewind setenv strcasecmp strcasestr strdup strlcpy strncasecmp strndup strnlen strsep strtof strtok_r strtoll swab tdestroy vasprintf])
 AC_CHECK_FUNCS(fdatasync,,
   [AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])
diff --git a/include/vlc_common.h b/include/vlc_common.h
index a127bfd..4607766 100644
--- a/include/vlc_common.h
+++ b/include/vlc_common.h
@@ -893,10 +893,14 @@ VLC_API bool vlc_ureduce( unsigned *, unsigned *, uint64_t, uint64_t, uint64_t )
 #else
 static inline void *vlc_memalign(size_t align, size_t size)
 {
+#ifdef HAVE_POSIX_MEMALIGN
     void *base;
     if (unlikely(posix_memalign(&base, align, size)))
         base = NULL;
     return base;
+#else
+    return memalign(align, size);
+#endif
 }
 # define vlc_free(base) free(base)
 #endif
-- 
1.7.7.rc1