png-32: compat32 package for libpng

Libpng was written as a companion to the PNG specification, as a
way to reduce the amount of time and effort it takes to support
the PNG file format in application programs.

This package is intended to crosscompile Libpng for i386.

png-32/DESCR

@@ -0,0 +1,10 @@
+Libpng was written as a companion to the PNG specification, as a
+way to reduce the amount of time and effort it takes to support
+the PNG file format in application programs.  Most users will not
+have to modify the library significantly; advanced users may want
+to modify it more.  The library was coded for both users.  All
+attempts were made to make it as complete as possible, while
+keeping the code easy to understand.  Currently, this library
+only supports C.  Support for other languages is being considered.
+
+This package is intended to crosscompile Libpng for i386.

png-32/Makefile

@@ -0,0 +1,49 @@
+# $NetBSD: Makefile,v 1.198 2019/04/17 07:05:20 wiz Exp $
+
+DISTNAME=	libpng-1.6.37
+ABI?=		32
+PKGNAME=	compat${ABI}_${DISTNAME:S/lib//}
+LIBABISUFFIX?=	/32
+CATEGORIES=	graphics
+MASTER_SITES=	https://ftp-osl.osuosl.org/pub/libpng/src/archive/xz/libpng16/
+MASTER_SITES+=	${MASTER_SITE_SOURCEFORGE:=libpng/}
+MASTER_SITES+=	ftp://ftp.fu-berlin.de/unix/graphics/png/src/libpng16/
+EXTRACT_SUFX=	.tar.xz
+
+MAINTAINER=	wiz@NetBSD.org
+HOMEPAGE=	http://www.libpng.org/pub/png/libpng.html
+COMMENT=	Library for manipulating PNG images
+LICENSE=	zlib
+
+CFLAGS+=		-m32
+USE_LIBTOOL=		yes
+GNU_CONFIGURE=		yes
+# do not create libpng.la
+CONFIGURE_ARGS+=	--libdir=${PREFIX}/lib${LIBABISUFFIX}
+CONFIGURE_ARGS+=	--disable-unversioned-links
+CONFIGURE_ARGS+=	--bindir=${PREFIX}/lib/${LIBABISUFFIX}
+CONFIGURE_ARGS+=	--includedir=${PREFIX}/lib/${LIBABISUFFIX}
+GNU_CONFIGURE_MANDIR=	${PREFIX}/lib/${LIBABISUFFIX}
+# but do install png.h outside include/libpng$VERSION for now
+# until pkgsrc is fixed to use libpng-config or the pc file everywhere
+INSTALL_TARGET=		install install-header-links
+
+PKGCONFIG_OVERRIDE=	scripts/libpng.pc.in libpng.pc.in
+TEST_TARGET=		check
+
+CPPFLAGS+=	-DPNG_USER_CHUNK_CACHE_MAX=128 -DPNG_USER_CHUNK_MALLOC_MAX=8000000
+
+.include "../../mk/bsd.prefs.mk"
+# keep this in sync with the same code in buildlink3.mk
+.if ${MACHINE_ARCH} != "i386" && ${MACHINE_ARCH} != "x86_64"
+CPPFLAGS+=	-DPNG_NO_ASSEMBLER_CODE
+.endif
+
+SUBST_CLASSES+=		rpathfix
+SUBST_FILES.rpathfix=	libpng-config.in
+SUBST_MESSAGE.rpathfix=	Adding rpath to libpng-config
+SUBST_SED.rpathfix=	-e 's/-L$${libdir}/${COMPILER_RPATH_FLAG}$${libdir} -L$${libdir}/g'
+SUBST_STAGE.rpathfix=	pre-configure
+
+.include "../../devel/zlib/buildlink3.mk"
+.include "../../mk/bsd.pkg.mk"

png-32/PLIST

@@ -0,0 +1,17 @@
+@comment $NetBSD$
+lib/32/libpng-config
+lib/32/libpng16-config
+lib/32/libpng16.la
+lib/32/libpng16/png.h
+lib/32/libpng16/pngconf.h
+lib/32/libpng16/pnglibconf.h
+lib/32/man3/libpng.3
+lib/32/man3/libpngpf.3
+lib/32/man5/png.5
+lib/32/pkgconfig/libpng.pc
+lib/32/pkgconfig/libpng16.pc
+lib/32/png-fix-itxt
+lib/32/png.h
+lib/32/pngconf.h
+lib/32/pngfix
+lib/32/pnglibconf.h

png-32/buildlink3.mk

@@ -0,0 +1,27 @@
+# $NetBSD: buildlink3.mk,v 1.27 2013/02/16 11:16:06 wiz Exp $
+
+BUILDLINK_TREE+=	png
+
+.if !defined(PNG_BUILDLINK3_MK)
+PNG_BUILDLINK3_MK:=
+
+BUILDLINK_API_DEPENDS.png+=	png>=1.2.4
+BUILDLINK_ABI_DEPENDS.png+=	png>=1.6.0nb1
+BUILDLINK_PKGSRCDIR.png?=	../../graphics/png
+
+# keep this in sync with the same code in Makefile
+.if ${MACHINE_ARCH} != "i386" && ${MACHINE_ARCH} != "x86_64"
+CPPFLAGS+=	-DPNG_NO_ASSEMBLER_CODE
+.endif
+
+# Some software directly tries to link against -lpng instead of
+# using pkg-config or libpng-config to find the proper arguments
+# instead of installing symlinks. Work around this with buildlink
+# magic: packages outside pkgsrc will need to be converted to
+# one of the proper methods or fail.
+BUILDLINK_TRANSFORM+=	l:png:png16
+
+.include "../../devel/zlib/buildlink3.mk"
+.endif # PNG_BUILDLINK3_MK
+
+BUILDLINK_TREE+=	-png

png-32/distinfo

@@ -0,0 +1,7 @@
+$NetBSD: distinfo,v 1.142 2019/04/17 07:05:20 wiz Exp $
+
+SHA1 (libpng-1.6.37.tar.xz) = 3ab93fabbf4c27e1c4724371df408d9a1bd3f656
+RMD160 (libpng-1.6.37.tar.xz) = 7d68b596480e994aeccb2794df48a3613f1de9c4
+SHA512 (libpng-1.6.37.tar.xz) = 59e8c1059013497ae616a14c3abbe239322d3873c6ded0912403fc62fb260561768230b6ab997e2cccc3b868c09f539fd13635616b9fa0dd6279a3f63ec7e074
+Size (libpng-1.6.37.tar.xz) = 1012272 bytes
+SHA1 (patch-pngpriv.h) = 3da29edb5d89ab26b9787a71b87c3fd8f451ea39

png-32/hacks.mk

@@ -0,0 +1,18 @@
+# $NetBSD: hacks.mk,v 1.4 2014/12/15 11:46:35 jperkin Exp $
+
+.if !defined(PNG_HACKS_MK)
+PNG_HACKS_MK=	defined
+
+.include "../../mk/compiler.mk"
+
+### gcc-4.5.3 in NetBSD/arm 6.1 causes SEGV in some png functions.
+### -O works around, and there is a report that -O2 -fno-ipa-sra is enough.
+### See PR/47798 for details.
+.if !empty(MACHINE_PLATFORM:MNetBSD-*-arm) && !empty(CC_VERSION:Mgcc-4.5.*)
+# XXX: is there any good way to replace the default -O2 with multiple args?
+#PKG_HACKS+=		optimisation
+#BUILDLINK_TRANSFORM+=	opt:-O[2-9]*:-O2 -fno-ipa-sra
+CFLAGS+=-O2 -fno-ipa-sra
+.endif
+
+.endif	# PNG_HACKS_MK

png-32/patches/patch-pngpriv.h

@@ -0,0 +1,15 @@
+$NetBSD: patch-pngpriv.h,v 1.1 2017/07/05 04:59:16 maya Exp $
+
+Don't typedef types when included by assembler files
+
+--- pngpriv.h.orig	2017-06-28 18:46:03.000000000 +0000
++++ pngpriv.h
+@@ -464,7 +464,7 @@
+    static_cast<type>(static_cast<void*>(value))
+ #  define png_aligncastconst(type, value) \
+    static_cast<type>(static_cast<const void*>(value))
+-#else
++#elif !defined(__ASSEMBLER__)
+ #  define png_voidcast(type, value) (value)
+ #  ifdef _WIN64
+ #     ifdef __GNUC__