libpng: import from oldpackages, add myself as maintainer, change PKG_LICENSE to SPDX identifiers, update to v1.2.51

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

libs/libpng/Makefile

@@ -0,0 +1,68 @@
+#
+# Copyright (C) 2006-2014 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=libpng
+PKG_VERSION:=1.2.51
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+PKG_SOURCE_URL:=@SF/libpng
+PKG_MD5SUM:=4efba67fa5aa2b785c6fcec2cc3e90c9
+PKG_MAINTAINER:=Jo-Philipp Wich <jow@openwrt.org>
+
+PKG_LICENSE:=Libpng GPL-2.0+ BSD-3-Clause
+PKC_LICENSE_FILES:=LICENSE contrib/gregbook/COPYING contrib/gregbook/LICENSE
+
+PKG_FIXUP:=autoreconf
+PKG_INSTALL:=1
+PKG_BUILD_PARALLEL:=1
+
+include $(INCLUDE_DIR)/host-build.mk
+include $(INCLUDE_DIR)/package.mk
+
+define Package/libpng
+  SECTION:=libs
+  CATEGORY:=Libraries
+  DEPENDS:=+zlib
+  TITLE:=A PNG format files handling library
+  URL:=http://www.libpng.org/pub/png/libpng.html
+endef
+
+TARGET_CFLAGS += $(FPIC)
+
+CONFIGURE_ARGS += \
+	--enable-shared \
+	--enable-static \
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(CP) $(PKG_INSTALL_DIR)/usr/bin/libpng{,12}-config $(1)/usr/bin/
+	$(SED) \
+		's,^\(prefix\|exec_prefix\)=.*,\1=$(STAGING_DIR)/usr,g' \
+		$(1)/usr/bin/libpng{,12}-config
+	$(INSTALL_DIR) $(1)/usr/include
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/png{,conf}.h $(1)/usr/include/
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/libpng12 $(1)/usr/include/
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libpng{,12}.{a,la,so*} $(1)/usr/lib/
+	$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/libpng{,12}.pc $(1)/usr/lib/pkgconfig/
+	$(INSTALL_DIR) $(2)/bin
+	for f in libpng{,12}-config; do \
+		$(LN) ../../usr/bin/$$$$f $(2)/bin/ ; \
+	done
+endef
+
+define Package/libpng/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libpng{,12}.so.* $(1)/usr/lib/
+endef
+
+$(eval $(call HostBuild))
+$(eval $(call BuildPackage,libpng))

libs/libpng/patches/100-config_fix.patch

@@ -0,0 +1,10 @@
+--- a/scripts/libpng-config-body.in
++++ b/scripts/libpng-config-body.in
+@@ -83,6 +83,7 @@ while test $# -gt 0; do
+ 
+     --static)
+         R_opts=""
++        libs=${all_libs}
+         ;;
+ 
+     *)