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libxml2: update to 2.9.14, includes security fixes

v2.9.14: May 02 2022:
   - Security:
  [CVE-2022-29824] Integer overflow in xmlBuf and xmlBuffer
  Fix potential double-free in xmlXPtrStringRangeFunction
  Fix memory leak in xmlFindCharEncodingHandler
  Normalize XPath strings in-place
  Prevent integer-overflow in htmlSkipBlankChars() and xmlSkipBlankChars()
    (David Kilzer)
  Fix leak of xmlElementContent (David Kilzer)

   - Bug fixes:
  Fix parsing of subtracted regex character classes
  Fix recursion check in xinclude.c
  Reset last error in xmlCleanupGlobals
  Fix certain combinations of regex range quantifiers
  Fix range quantifier on subregex

   - Improvements:
  Fix recovery from invalid HTML start tags

   - Build system, portability:
  Define LFS macros before including system headers
  Initialize XPath floating-point globals
  configure: check for icu DEFS (James Hilliard)
  configure.ac: produce tar.xz only (GNOME policy) (David Seifert)
  CMakeLists.txt: Fix LIBXML_VERSION_NUMBER
  Fix build with older Python versions
  Fix --without-valid build

# $NetBSD: Makefile,v 1.164 2022/05/06 00:55:54 gutteridge Exp $

.include "../../textproc/libxml2/Makefile.common"

COMMENT=	XML parser library from the GNOME project
LICENSE=	modified-bsd

USE_FEATURES=		glob
USE_LIBTOOL=		yes
USE_TOOLS+=		gmake
GNU_CONFIGURE=		yes
CONFIGURE_ARGS+=	--with-html-dir=${PREFIX}/share/doc/libxml2
CONFIGURE_ARGS+=	--with-iconv=${BUILDLINK_PREFIX.iconv}
CONFIGURE_ARGS+=	--with-zlib=${BUILDLINK_PREFIX.zlib}
CONFIGURE_ARGS+=	--with-lzma=${BUILDLINK_PREFIX.xz}
CONFIGURE_ARGS+=	--without-python

PKGCONFIG_OVERRIDE=	libxml-2.0.pc.in

USE_LANGUAGES+=		c99

.include "options.mk"

# allow thread-awareness, but make sure the library is not
# linked against libpthread
#CONFIGURE_ARGS+=	--without-threads

MAKE_ENV+=	PAX=${PAX:Q}

TEST_TARGET=	check

SUBST_CLASSES+=		cat
SUBST_STAGE.cat=	pre-configure
SUBST_FILES.cat=	catalog.c xmlcatalog.c
SUBST_SED.cat=		-e "s,@@SGML_DEFAULT_CATALOG@@,${SGML_DEFAULT_CATALOG},g"
SUBST_SED.cat+=		-e "s,@@XML_DEFAULT_CATALOG@@,${XML_DEFAULT_CATALOG},g"

BUILDLINK_TRANSFORM.Darwin+=	rm:-Wno-array-bounds
BUILDLINK_TRANSFORM.SunOS+=	rm:-Werror=format=2

LDFLAGS.SCO_SV+=	-lm

post-install:
	${RM} -f ${DESTDIR}${PREFIX}/share/examples/libxml2/README

.include "../../archivers/xz/buildlink3.mk"
.include "../../converters/libiconv/buildlink3.mk"
.include "../../devel/zlib/buildlink3.mk"
.include "../../textproc/xmlcatmgr/catalogs.mk"
.include "../../mk/dlopen.buildlink3.mk"
.include "../../mk/pthread.buildlink3.mk"
.include "../../mk/bsd.pkg.mk"