SSL comstack support. Separate POSIX thread support library.

[yaz-moved-to-github.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index 9bd619b..da8cc99 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -513,3 +513,16 @@ AC_DEFUN(AM_PROG_NM, [indir([AC_PROG_NM])])dnl
 dnl This is just to silence aclocal about the macro not being used
 ifelse([AC_DISABLE_FAST_INSTALL])dnl
 
+# 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])
+