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From: Mike Hommey <glandium@debian.org>
Date: Thu, 13 Mar 2008 07:33:42 +0100
Subject: Ignore system libjpeg, libpng and zlib version checking
Make sure we won't be bitten by upstream changing libjpeg, libpng or zlib
internal version, which makes system library not used even though
--with-system-* argument is given to configure.
---
configure.in | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/configure.in b/configure.in
index 18872c4..5c20d46 100644
--- a/configure.in
+++ b/configure.in
@@ -4357,7 +4357,7 @@ else
AC_CHECK_LIB(jpeg, jpeg_destroy_compress, [SYSTEM_JPEG=1 JPEG_LIBS="-ljpeg $JPEG_LIBS"], SYSTEM_JPEG=, $JPEG_LIBS)
fi
-if test "$SYSTEM_JPEG" = 1; then
+if test "$SYSTEM_JPEG" = 0; then
LIBS="$JPEG_LIBS $LIBS"
AC_TRY_COMPILE([ #include <stdio.h>
#include <sys/types.h>
@@ -4397,7 +4397,7 @@ else
AC_CHECK_LIB(z, gzread, [SYSTEM_ZLIB=1 ZLIB_LIBS="-lz $ZLIB_LIBS"],
[SYSTEM_ZLIB= ZLIB_CFLAGS= ZLIB_LIBS=], $ZLIB_LIBS)
fi
-if test "$SYSTEM_ZLIB" = 1; then
+if test "$SYSTEM_ZLIB" = 0; then
LIBS="$ZLIB_LIBS $LIBS"
AC_TRY_COMPILE([ #include <stdio.h>
#include <string.h>
@@ -4473,7 +4473,7 @@ else
AC_MSG_ERROR([--with-system-png won't work because the system's libpng doesn't have APNG support]),
$_SAVE_PNG_LIBS)
fi
-if test "$SYSTEM_PNG" = 1; then
+if test "$SYSTEM_PNG" = 0; then
LIBS="$PNG_LIBS $LIBS"
AC_TRY_COMPILE([ #include <stdio.h>
#include <sys/types.h>
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