We had HAVE_POSIX_FALLOCATE checks, but no such macros were ever
defined anywhere. This commit makes it so that this macro is defined if
the posix_fallocate is detected during configure.

Signed-off-by: Jonas Ådahl <[email protected]>
---
 configure.ac               | 3 ++-
 hw/xwayland/xwayland-shm.c | 4 ++++
 include/dix-config.h.in    | 3 +++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 312fc69..f4de90f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -218,7 +218,8 @@ AC_SUBST(DLOPEN_LIBS)
 dnl Checks for library functions.
 AC_CHECK_FUNCS([backtrace ffs geteuid getuid issetugid getresuid \
        getdtablesize getifaddrs getpeereid getpeerucred getprogname getzoneid \
-       mmap seteuid shmctl64 strncasecmp vasprintf vsnprintf walkcontext 
setitimer])
+       mmap posix_fallocate seteuid shmctl64 strncasecmp vasprintf vsnprintf \
+       walkcontext setitimer])
 AC_REPLACE_FUNCS([reallocarray strcasecmp strcasestr strlcat strlcpy strndup])
 
 AC_CHECK_DECLS([program_invocation_short_name], [], [], [[#include <errno.h>]])
diff --git a/hw/xwayland/xwayland-shm.c b/hw/xwayland/xwayland-shm.c
index d047798..70453e8 100644
--- a/hw/xwayland/xwayland-shm.c
+++ b/hw/xwayland/xwayland-shm.c
@@ -24,6 +24,10 @@
  * SOFTWARE.
  */
 
+#ifdef HAVE_CONFIG_H
+#include <dix-config.h>
+#endif
+
 #include "xwayland.h"
 
 #include <sys/mman.h>
diff --git a/include/dix-config.h.in b/include/dix-config.h.in
index 940d2b7..a164c15 100644
--- a/include/dix-config.h.in
+++ b/include/dix-config.h.in
@@ -521,4 +521,7 @@
 /* Have setitimer support */
 #undef HAVE_SETITIMER
 
+/* Have posix_fallocate() */
+#undef HAVE_POSIX_FALLOCATE
+
 #endif /* _DIX_CONFIG_H_ */
-- 
2.4.3

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