build-sys: properly quote m4 macro arguments in CC_CHECK_FLAGS_APPEND

[elogind.git] / m4 / attributes.m4

diff --git a/m4/attributes.m4 b/m4/attributes.m4
index 97f094b07a2c303896c4174573093cd1901a2ec9..4b0fcdce3deb178b13fcc5b591b10a42fc2e419e 100644 (file)
--- a/m4/attributes.m4
+++ b/m4/attributes.m4
@@ -54,8 +54,8 @@ AC_DEFUN([CC_CHECK_FLAG_APPEND], [
 
 dnl CC_CHECK_FLAGS_APPEND([WHERE-TO-APPEND], [ENV-VAR], [FLAG1 FLAG2])
 AC_DEFUN([CC_CHECK_FLAGS_APPEND], [
-  for flag in $3; do
-    CC_CHECK_FLAG_APPEND($1, $2, $flag)
+  for flag in [$3]; do
+    CC_CHECK_FLAG_APPEND([$1], [$2], $flag)
   done
 ])