add header subpackage

package/libpng/Makefile

@@ -5,7 +5,7 @@ include ${TOPDIR}/rules.mk
 
 PKG_NAME:=		libpng
 PKG_VERSION:=		1.2.44
-PKG_RELEASE:=		2
+PKG_RELEASE:=		3
 PKG_MD5SUM:=		89b62f8daaeeab1342e307d6d1411ff1
 PKG_DESCR:=		A library for reading/writing PNG images
 PKG_SECTION:=		libs
@@ -14,6 +14,10 @@ PKG_BUILDDEP:=		zlib
 PKG_URL:=		http://www.libpng.org/pub/png/libpng.html
 PKG_SITES:=		${MASTER_SITE_SOURCEFORGE:=libpng/}
 
+PKG_SUBPKGS:=		LIBPNG LIBPNG_DEV
+PKGSD_LIBPNG_DEV:=	development files for libpng
+PKGSC_LIBPNG_DEV:=	devel
+
 ifeq ($(ADK_STATIC),y)
 PKG_OPTS:=		libonly
 endif
@@ -21,9 +25,19 @@ endif
 include ${TOPDIR}/mk/package.mk
 
 $(eval $(call PKG_template,LIBPNG,${PKG_NAME},${PKG_VERSION}-${PKG_RELEASE},${PKG_DEPENDS},${PKG_DESCR},${PKG_SECTION},${PKG_OPTS}))
+$(eval $(call PKG_template,LIBPNG_DEV,libpng-dev,${PKG_VERSION}-${PKG_RELEASE},${PKG_DEPENDS},${PKGSD_LIBPNG_DEV},${PKGSC_LIBPNG_DEV},${PKG_OPTS}))
+
+SUB_INSTALLS-y:=
+SUB_INSTALLS-m:=
+SUB_INSTALLS-${ADK_PACKAGE_LIBPNG_DEV}+=	libpng-dev-install
 
-post-install:
+post-install: ${SUB_INSTALLS-m} ${SUB_INSTALLS-y}
 	${INSTALL_DIR} ${IDIR_LIBPNG}/usr/lib
 	${CP} ${WRKINST}/usr/lib/libpng{,12}.so* ${IDIR_LIBPNG}/usr/lib/
 
+libpng-dev-install:
+	${INSTALL_DIR} ${IDIR_LIBPNG_DEV}/usr/include/libpng12
+	${CP} ${WRKINST}/usr/include/*.h ${IDIR_LIBPNG_DEV}/usr/include
+	${CP} ${WRKINST}/usr/include/libpng12/*.h ${IDIR_LIBPNG_DEV}/usr/include/libpng12
+
 include ${TOPDIR}/mk/pkg-bottom.mk