Behaves exactly the same and also works in shells which don't support +=
Signed-off-by: Sertonix <sertonix@xxxxxxxxxx>
---
configure.ac | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index d8205e80..eb542581 100644
--- a/configure.ac
+++ b/configure.ac
@@ -678,7 +678,7 @@ AC_DEFUN([CHECK_CCSUPPORT], [
AC_MSG_CHECKING([whether CC supports $1])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[AC_MSG_RESULT([yes])]
- [$2+=$1],
+ [AS_VAR_APPEND([$2],["$1"])],
[AC_MSG_RESULT([no])]
)
CFLAGS="$my_save_cflags"
--
2.49.0
