raw-posix: Fix build without posix_fallocate()
Check for the presence of posix_fallocate() in configure and only
compile in support for PREALLOC_MODE_FALLOC when it's there.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/configure b/configure
index a2c0f2a..681abfc 100755
--- a/configure
+++ b/configure
@@ -3308,6 +3308,21 @@
fallocate_punch_hole=yes
fi
+# check for posix_fallocate
+posix_fallocate=no
+cat > $TMPC << EOF
+#include <fcntl.h>
+
+int main(void)
+{
+ posix_fallocate(0, 0, 0);
+ return 0;
+}
+EOF
+if compile_prog "" "" ; then
+ posix_fallocate=yes
+fi
+
# check for sync_file_range
sync_file_range=no
cat > $TMPC << EOF
@@ -4522,6 +4537,9 @@
if test "$fallocate_punch_hole" = "yes" ; then
echo "CONFIG_FALLOCATE_PUNCH_HOLE=y" >> $config_host_mak
fi
+if test "$posix_fallocate" = "yes" ; then
+ echo "CONFIG_POSIX_FALLOCATE=y" >> $config_host_mak
+fi
if test "$sync_file_range" = "yes" ; then
echo "CONFIG_SYNC_FILE_RANGE=y" >> $config_host_mak
fi