Add a recipe for libpng 1.2

* This is an old version, but it is required to run some BeOS software
(for example Pixel).
* Package is named libpng12 so it can be installed next to the current
one without conflict.

media-libs/libpng/libpng12-1.2.51.recipe

@@ -0,0 +1,80 @@
+SUMMARY="Portable Network Graphics library (BeOS compatibility version)"
+DESCRIPTION="
+libpng is the official PNG reference library. It supports almost all PNG \
+features, is extensible, and has been extensively tested for over 17 years.
+
+This is libpng 1.2, an olderversion which may be needed for compatibility with \
+BeOS application. For new developments please use the current libpng package.
+"
+HOMEPAGE="http://www.libpng.org"
+COPYRIGHT="
+	1998-2011 Glenn Randers-Pehrson
+	1996-1997 Andreas Dilger
+	1995-1996 Guy Eric Schalnat, Group 42, Inc.
+	"
+LICENSE="LibPNG"
+SRC_URI="http://sourceforge.net/projects/libpng/files/libpng12/1.2.51/libpng-1.2.51.tar.bz2"
+CHECKSUM_SHA256="b0ad409d7048c851eadb2abab6c1a1a1e131bc4d3d07501ff7c820cce5bec811"
+SOURCE_DIR="libpng-1.2.51"
+REVISION="1"
+ARCHITECTURES="x86_gcc2"
+SECONDARY_ARCHITECTURES="x86_gcc2"
+
+PROVIDES="
+	libpng12$secondaryArchSuffix = $portVersion compat >= 1.2
+	lib:libpng$secondaryArchSuffix = 3.51.0 compat >= 3
+	lib:libpng12$secondaryArchSuffix = 3.51.0 compat >= 3
+	"
+REQUIRES="
+	haiku$secondaryArchSuffix >= $haikuVersion
+	lib:libz$secondaryArchSuffix
+	"
+BUILD_REQUIRES="
+	haiku${secondaryArchSuffix}_devel >= $haikuVersion
+	devel:libz$secondaryArchSuffix >= 1.0.4
+	"
+BUILD_PREREQUIRES="
+	cmd:aclocal
+	cmd:autoconf
+	cmd:automake
+	cmd:gcc$secondaryArchSuffix
+	cmd:ld$secondaryArchSuffix
+	cmd:libtoolize
+	cmd:make
+	"
+
+BUILD()
+{
+	aclocal
+	libtoolize --force --copy --install
+	./autogen.sh
+	runConfigure ./configure
+	make $jobArgs
+}
+
+INSTALL()
+{
+	make install
+
+	prepareInstalledDevelLibs libpng libpng12
+	fixPkgconfig
+
+	# devel package
+	packageEntries devel \
+		$binDir \
+		$developDir \
+		$manDir/man3
+}
+
+# ----- devel package -------------------------------------------------------
+
+PROVIDES_devel="
+	libpng12${secondaryArchSuffix}_devel = $portVersion compat >= 1.2
+	cmd:libpng_config$secondaryArchSuffix = $portVersion compat >= 1.2
+	cmd:libpng12_config$secondaryArchSuffix = $portVersion compat >= 1.2
+	devel:libpng$secondaryArchSuffix = 3.51.0 compat >= 3
+	devel:libpng12$secondaryArchSuffix = 3.51.0 compat >= 3
+	"
+REQUIRES_devel="
+	libpng12$secondaryArchSuffix == $portVersion base
+	"