1 files changed, 13 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4
index f23ba29..f54277a 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -125,3 +125,16 @@ for am_file in <<$1>>; do
 done<<>>dnl>>)
 changequote([,]))])
 
+# Define a conditional.
+
+AC_DEFUN(AM_CONDITIONAL,
+[AC_SUBST($1_TRUE)
+AC_SUBST($1_FALSE)
+if $2; then
+  $1_TRUE=
+  $1_FALSE='#'
+else
+  $1_TRUE='#'
+  $1_FALSE=
+fi])
+