diff options
Diffstat (limited to 'm4/ucred.m4')
| -rw-r--r-- | m4/ucred.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/m4/ucred.m4 b/m4/ucred.m4 new file mode 100644 index 000000000..3a8245245 --- /dev/null +++ b/m4/ucred.m4 @@ -0,0 +1,32 @@ +# Check if "struct ucred" is available. If not, try harder with +# _GNU_SOURCE. +# +# Author: Max Kellermann <max@duempel.org> + +AC_DEFUN([STRUCT_UCRED],[ + AC_MSG_CHECKING([for struct ucred]) + AC_CACHE_VAL(mpd_cv_have_struct_ucred, [ + AC_TRY_COMPILE([#include <sys/socket.h>], + [struct ucred cred;], + mpd_cv_have_struct_ucred=yes, + mpd_cv_have_struct_ucred=no) + if test x$mpd_cv_have_struct_ucred = xno; then + # glibc 2.8 forces _GNU_SOURCE on us + AC_TRY_COMPILE( + [#define _GNU_SOURCE + #include <sys/socket.h>], + [struct ucred cred;], + mpd_cv_have_struct_ucred=yes, + mpd_cv_have_struct_ucred=no) + if test x$mpd_cv_have_struct_ucred = xyes; then + # :( + MPD_CFLAGS="$MPD_CFLAGS -D_GNU_SOURCE" + fi + fi + ]) + + AC_MSG_RESULT($mpd_cv_have_struct_ucred) + if test x$mpd_cv_have_struct_ucred = xyes; then + AC_DEFINE(HAVE_STRUCT_UCRED, 1, [Define if struct ucred is present from sys/socket.h]) + fi +]) |