m4/ax_append*: update to serial 4

diff --git a/m4/ax_append_compile_flags.m4 b/m4/ax_append_compile_flags.m4
index 425417008ab9a62ca8005a179b2ef8514f3318f7..dc7b86600a0069dd96e5a4e5bb11c7dcdd74062c 100644 (file)
--- a/m4/ax_append_compile_flags.m4
+++ b/m4/ax_append_compile_flags.m4
@@ -54,10 +54,12 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.
 
-#serial 2
+#serial 4
 
 AC_DEFUN([AX_APPEND_COMPILE_FLAGS],
-[for flag in $1; do
+[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+for flag in $1; do
   AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3])
 done
 ])dnl AX_APPEND_COMPILE_FLAGS

diff --git a/m4/ax_append_link_flags.m4 b/m4/ax_append_link_flags.m4
index 4fc433700ac40952cb8e98cd55ad52a21c865d9b..c73ddafc2e70d80d71e4a546422ae6654325cf35 100644 (file)
--- a/m4/ax_append_link_flags.m4
+++ b/m4/ax_append_link_flags.m4
@@ -52,10 +52,12 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.
 
-#serial 2
+#serial 4
 
 AC_DEFUN([AX_APPEND_LINK_FLAGS],
-[for flag in $1; do
+[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+for flag in $1; do
   AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3])
 done
 ])dnl AX_APPEND_LINK_FLAGS