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-rw-r--r--m4/ac_define_if.m47
1 files changed, 7 insertions, 0 deletions
diff --git a/m4/ac_define_if.m4 b/m4/ac_define_if.m4
new file mode 100644
index 000000000..961ca6445
--- /dev/null
+++ b/m4/ac_define_if.m4
@@ -0,0 +1,7 @@
+dnl use: AC_DEFINE_IF(id, testcond, val, comment)
+AC_DEFUN([AC_DEFINE_IF],
+[
+if $2; then
+ AC_DEFINE($1, $3, $4)
+fi
+])