libftdi: (tomj) first shot at doxygen documentation

[libftdi] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index 5d351eb..5d22e28 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -3617,3 +3617,16 @@ AC_DEFUN([AM_PROG_NM],        [AC_PROG_NM])
 # This is just to silence aclocal about the macro not being used
 ifelse([AC_DISABLE_FAST_INSTALL])
 
+# 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])
+