new port: pngcheck

okay thfr@

graphics/pngcheck/Makefile

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+# $OpenBSD: Makefile,v 1.1.1.1 2021/10/17 21:11:20 espie Exp $
+
+COMMENT =	check the integrity of PNG files
+DISTNAME = 	pngcheck-3.0.3
+
+CATEGORIES = 	graphics sysutils
+
+HOMEPAGE = 	http://www.libpng.org/pub/png/apps/pngcheck.html
+
+# MIT for pngcheck, GPL for extra utilities
+PERMIT_PACKAGE = Yes
+
+WANTLIB = 	c z
+
+MASTER_SITES = 	http://www.libpng.org/pub/png/src/
+
+NO_TEST = 	Yes
+
+MAKE_FILE = 	Makefile.unx
+
+# easy enough to use their Makefile for building
+MAKE_FLAGS = 	ZLIB=-lz ZINC=  CFLAGS="${CFLAGS}" CC=${CC} LD=${CC}
+
+# but it has no install target
+do-install:
+	cd ${WRKDIST}; \
+	for i in pngcheck pngsplit png-fix-IDAT-windowsize; \
+	do \
+		${INSTALL_PROGRAM} $$i ${PREFIX}/bin; \
+		if test -f gpl/$$i.1; then i=gpl/$$i; fi; \
+		${INSTALL_MAN} $$i.1 ${PREFIX}/man/man1; \
+	done
+.include <bsd.port.mk>
+

graphics/pngcheck/distinfo

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+SHA256 (pngcheck-3.0.3.tar.gz) = w2pEkWNK91H3eY6kITIWQvlZD6oDLsyw3V+0UzYJ3uY=
+SIZE (pngcheck-3.0.3.tar.gz) = 63766

graphics/pngcheck/patches/patch-gpl_png-fix-IDAT-windowsize_1

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+$OpenBSD: patch-gpl_png-fix-IDAT-windowsize_1,v 1.1.1.1 2021/10/17 21:11:20 espie Exp $
+
+Index: gpl/png-fix-IDAT-windowsize.1
+--- gpl/png-fix-IDAT-windowsize.1.orig
++++ gpl/png-fix-IDAT-windowsize.1
+@@ -1,6 +1,6 @@
+ .TH PNG-FIX-IDAT-WINDOWSIZE "1" "October 2020" "png-fix-IDAT-windowsize 1.0" "User Commands"
+ .SH NAME
+-png-fix-IDAT-windowsize \- manual page for png-fix-IDAT-windowsize 1.0
++png-fix-IDAT-windowsize \- fix corrupt libpng 1.2.6 output
+ .SH SYNOPSIS
+ .B png\-fix\-IDAT\-windowsize
+ .RI [ options ]

graphics/pngcheck/patches/patch-gpl_pngsplit_1

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+$OpenBSD: patch-gpl_pngsplit_1,v 1.1.1.1 2021/10/17 21:11:20 espie Exp $
+
+Index: gpl/pngsplit.1
+--- gpl/pngsplit.1.orig
++++ gpl/pngsplit.1
+@@ -1,6 +1,6 @@
+ .TH PNGSPLIT "1" "October 2020" "pngsplit 1.0" "User Commands"
+ .SH NAME
+-pngsplit \- manual page for pngsplit 1.0
++pngsplit \- split PNG/MNG/JNG into chunks
+ .SH SYNOPSIS
+ .B pngsplit
+ .RI [ options ]

graphics/pngcheck/patches/patch-pngcheck_1

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+$OpenBSD: patch-pngcheck_1,v 1.1.1.1 2021/10/17 21:11:20 espie Exp $
+
+Index: pngcheck.1
+--- pngcheck.1.orig
++++ pngcheck.1
+@@ -1,6 +1,6 @@
+ .TH PNGCHECK "1" "April 2021" "pngcheck 3.0.3" "User Commands"
+ .SH NAME
+-pngcheck \- manual page for pngcheck 3.0.3
++pngcheck \- check PNG/JNG/MNG file integrity
+ .SH SYNOPSIS
+ .B pngcheck
+ .RI [ \-7cpqtv ]

graphics/pngcheck/pkg/DESCR

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+pngcheck basically checks png files for corruption
+png-fix-IDAT-windowsize repairs minor zlib header breakage
+	from an older libpng
+pngsplit breaks a png into constituent

graphics/pngcheck/pkg/PLIST

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+@comment $OpenBSD: PLIST,v 1.1.1.1 2021/10/17 21:11:20 espie Exp $
+@bin bin/png-fix-IDAT-windowsize
+@bin bin/pngcheck
+@bin bin/pngsplit
+@man man/man1/png-fix-IDAT-windowsize.1
+@man man/man1/pngcheck.1
+@man man/man1/pngsplit.1