summaryrefslogtreecommitdiff
path: root/Build/source/libs/libpng/ac/libpng.ac
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/libpng/ac/libpng.ac')
-rw-r--r--Build/source/libs/libpng/ac/libpng.ac7
1 files changed, 5 insertions, 2 deletions
diff --git a/Build/source/libs/libpng/ac/libpng.ac b/Build/source/libs/libpng/ac/libpng.ac
index fcf51aadf7c..009b8cf1513 100644
--- a/Build/source/libs/libpng/ac/libpng.ac
+++ b/Build/source/libs/libpng/ac/libpng.ac
@@ -3,5 +3,8 @@ dnl
dnl Copyright (C) 2009 Peter Breitenlohner <tex-live@tug.org>
dnl You may freely use, modify and/or distribute this file.
dnl
-## define required functions and headers from system libpng
-KPSE_CHECK_LIB([libpng], [png_set_read_fn], [png.h])
+## basic check of system libpng
+KPSE_TRY_LIB([libpng],
+ [#include <png.h>],
+ [png_structp png; png_voidp io; png_rw_ptr fn;
+png_set_read_fn(png, io, fn);])