-
- m4_if([$#], 3, [
- m4_pushdef([true_action], [$3])
- ], [
- m4_pushdef([true_action], [])
- ])
-
- m4_if([$#], 4, [
- m4_pushdef([false_action], [$4])
- ], [
- m4_pushdef([false_action], [
- AC_MSG_ERROR(elfutils >= major_version.minor_version is required)])
- ])
+ m4_pushdef([true_action], m4_default([$3], [:]))
+ m4_pushdef([false_action], m4_default(
+ [$4], [AC_MSG_ERROR(elfutils >= major_version.minor_version is required)]
+ ))