Blame SOURCES/jdk8035341-allow_using_system_installed_libpng.patch

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diff -ruN jdk8/common/autoconf/libraries.m4 jdk8/common/autoconf/libraries.m4
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--- jdk8/common/autoconf/libraries.m4	2013-11-14 20:08:01.845065585 -0500
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+++ jdk8/common/autoconf/libraries.m4	2013-11-14 20:10:56.186553066 -0500
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@@ -676,6 +676,47 @@
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   ###############################################################################
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   #
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+  # Check for the png library
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+  #
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+
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+  AC_ARG_WITH(libpng, [AS_HELP_STRING([--with-libpng],
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+     [use libpng from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])
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+
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+  AC_CHECK_LIB(png, png_sig_cmp,
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+               [ LIBPNG_FOUND=yes ],
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+               [ LIBPNG_FOUND=no ])
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+
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+  AC_MSG_CHECKING([for which libpng to use])
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+
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+  # default is bundled
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+  DEFAULT_LIBPNG=bundled
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+
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+  #
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+  # if user didn't specify, use DEFAULT_LIBPNG
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+  #
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+  if test "x${with_libpng}" = "x"; then
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+      with_libpng=${DEFAULT_libpng}
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+  fi
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+
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+
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+  if test "x${with_libpng}" = "xbundled"; then
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+      USE_EXTERNAL_LIBPNG=false
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+      AC_MSG_RESULT([bundled])
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+  elif test "x${with_libpng}" = "xsystem"; then
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+      if test "x${LIBPNG_FOUND}" = "xyes"; then
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+          USE_EXTERNAL_LIBPNG=true
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+          AC_MSG_RESULT([system])
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+      else
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+          AC_MSG_RESULT([system not found])
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+          AC_MSG_ERROR([--with-libpng=system specified, but no libpng found!])
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+      fi
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+  else
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+      AC_MSG_ERROR([Invalid value of --with-libpng: ${with_libpng}, use 'system' or 'bundled'])
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+  fi
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+  AC_SUBST(USE_EXTERNAL_LIBPNG)
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+
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+  ###############################################################################
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+  #
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   # Check for the zlib library
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   #
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diff -ruN jdk8/common/autoconf/spec.gmk.in jdk8/common/autoconf/spec.gmk.in
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--- jdk8/common/autoconf/spec.gmk.in	2013-10-31 19:24:33.000000000 -0400
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+++ jdk8/common/autoconf/spec.gmk.in	2013-11-14 21:10:56.365976518 -0500
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@@ -548,6 +548,7 @@
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 ENABLE_JFR=@ENABLE_JFR@
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 ENABLE_INTREE_EC=@ENABLE_INTREE_EC@
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 USE_EXTERNAL_LIBJPEG:=@USE_EXTERNAL_LIBJPEG@
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+USE_EXTERNAL_LIBPNG:=@USE_EXTERNAL_LIBPNG@
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 USE_EXTERNAL_LIBGIF:=@USE_EXTERNAL_LIBGIF@
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 USE_EXTERNAL_LIBZ:=@USE_EXTERNAL_LIBZ@
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 LIBZIP_CAN_USE_MMAP:=@LIBZIP_CAN_USE_MMAP@
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diff -ruN jdk8/jdk/make/lib/Awt2dLibraries.gmk jdk8/jdk/make/lib/Awt2dLibraries.gmk
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--- jdk8/jdk/make/lib/Awt2dLibraries.gmk	2013-11-14 20:08:01.845065585 -0500
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+++ jdk8/jdk/make/lib/Awt2dLibraries.gmk	2013-11-14 20:14:10.791982343 -0500
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@@ -1183,7 +1183,6 @@
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 ifndef BUILD_HEADLESS_ONLY
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   LIBSPLASHSCREEN_DIRS := \
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-    $(JDK_TOPDIR)/src/share/native/sun/awt/libpng \
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     $(JDK_TOPDIR)/src/share/native/sun/awt/splashscreen
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   ifeq ($(USE_EXTERNAL_LIBGIF), true)
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@@ -1200,6 +1199,13 @@
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     LIBJPEG_CFLAGS := -I$(JDK_TOPDIR)/src/share/native/sun/awt/jpeg
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   endif
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+  ifeq ($(USE_EXTERNAL_LIBPNG), true)
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+    LIBPNG_LDFLAGS := -lpng
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+  else
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+    LIBSPLASHSCREEN_DIRS += $(JDK_TOPDIR)/src/share/native/sun/awt/image/libpng
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+    LIBPNG_CFLAGS := -I$(JDK_TOPDIR)/src/share/native/sun/awt/libpng
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+  endif
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+
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   ifneq ($(OPENJDK_TARGET_OS), macosx)
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     LIBSPLASHSCREEN_DIRS += $(JDK_TOPDIR)/src/$(OPENJDK_TARGET_OS_API_DIR)/native/sun/awt/splashscreen
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   else
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@@ -1263,12 +1269,12 @@
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       LANG := C, \
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       OPTIMIZATION := LOW, \
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       CFLAGS := $(LIBSPLASHSCREEN_CFLAGS) $(CFLAGS_JDKLIB) \
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-          $(GIFLIB_CFLAGS) $(LIBJPEG_CFLAGS), \
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+          $(GIFLIB_CFLAGS) $(LIBJPEG_CFLAGS) $(LIBPNG_CFLAGS), \
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       MAPFILE := $(JDK_TOPDIR)/make/mapfiles/libsplashscreen/mapfile-vers, \
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       LDFLAGS := $(LDFLAGS_JDKLIB) \
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           $(call SET_SHARED_LIBRARY_ORIGIN), \
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       LDFLAGS_SUFFIX := $(LIBSPLASHSCREEN_LDFLAGS_SUFFIX) \
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-          $(LIBZ) $(GIFLIB_LDFLAGS) $(LIBJPEG_LDFLAGS), \
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+          $(LIBZ) $(GIFLIB_LDFLAGS) $(LIBJPEG_LDFLAGS) $(LIBPNG_LDFLAGS), \
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       LDFLAGS_SUFFIX_solaris := -lc, \
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       VERSIONINFO_RESOURCE := $(JDK_TOPDIR)/src/windows/resource/version.rc, \
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       RC_FLAGS := $(RC_FLAGS) \
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diff -ruN jdk8/jdk/src/share/native/sun/awt/splashscreen/splashscreen_png.c jdk8/jdk/src/share/native/sun/awt/splashscreen/splashscreen_png.c
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--- jdk8/jdk/src/share/native/sun/awt/splashscreen/splashscreen_png.c	2013-10-31 19:44:18.000000000 -0400
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+++ jdk8/jdk/src/share/native/sun/awt/splashscreen/splashscreen_png.c	2013-11-14 20:14:41.363892797 -0500
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@@ -25,8 +25,7 @@
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 #include "splashscreen_impl.h"
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-#include "../libpng/png.h"
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-
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+#include <png.h>
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 #include <setjmp.h>
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 #define SIG_BYTES 8