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-rw-r--r--m4/attributes.m48
1 files changed, 8 insertions, 0 deletions
diff --git a/m4/attributes.m4 b/m4/attributes.m4
index 393ee0ba7..bb53cca41 100644
--- a/m4/attributes.m4
+++ b/m4/attributes.m4
@@ -166,6 +166,14 @@ AC_DEFUN([CC_ATTRIBUTE_MALLOC], [
[$2])
])
+AC_DEFUN([CC_ATTRIBUTE_PACKED], [
+ CC_CHECK_ATTRIBUTE(
+ [packed], ,
+ [struct astructure { char a; int b; long c; void *d; } __attribute__((packed));],
+ [$1],
+ [$2])
+])
+
AC_DEFUN([CC_FLAG_VISIBILITY], [
AC_REQUIRE([CC_CHECK_WERROR])
ac_save_CFLAGS="$CFLAGS"