Add important patches from upstream, including a fix for a DoS vulnerability (CVE-2015-1819, bug #546720, thanks to Agostino Sarubbo).

(Portage version: 2.2.18/cvs/Linux x86_64, signed Manifest commit with key 0x18E5B6F2D8D5EC8D)

6 files changed, 606 insertions, 1 deletions

diff --git a/dev-libs/libxml2/ChangeLog b/dev-libs/libxml2/ChangeLog
index d7f3b1e65058..188d9764a480 100644
--- a/dev-libs/libxml2/ChangeLog
+++ b/dev-libs/libxml2/ChangeLog
@@ -1,6 +1,16 @@
 # ChangeLog for dev-libs/libxml2
 # Copyright 1999-2015 Gentoo Foundation; Distributed under the GPL v2
-# $Header: /var/cvsroot/gentoo-x86/dev-libs/libxml2/ChangeLog,v 1.443 2015/04/08 17:51:56 mgorny Exp $
+# $Header: /var/cvsroot/gentoo-x86/dev-libs/libxml2/ChangeLog,v 1.444 2015/04/19 16:09:17 tetromino Exp $
+
+*libxml2-2.9.2-r1 (19 Apr 2015)
+
+  19 Apr 2015; Alexandre Rostovtsev <tetromino@gentoo.org>
+  +libxml2-2.9.2-r1.ebuild, +files/libxml2-2.9.2-constant-memory.patch,
+  +files/libxml2-2.9.2-missing-entities.patch,
+  +files/libxml2-2.9.2-threads-declarations.patch,
+  +files/libxml2-2.9.2-timsort.patch:
+  Add important patches from upstream, including a fix for a DoS vulnerability
+  (CVE-2015-1819, bug #546720, thanks to Agostino Sarubbo).
 
   08 Apr 2015; Michał Górny <mgorny@gentoo.org> libxml2-2.9.2.ebuild:
   Drop old Python implementations
diff --git a/dev-libs/libxml2/files/libxml2-2.9.2-constant-memory.patch b/dev-libs/libxml2/files/libxml2-2.9.2-constant-memory.patch
new file mode 100644
index 000000000000..dc944b6353ea
--- /dev/null
+++ b/dev-libs/libxml2/files/libxml2-2.9.2-constant-memory.patch
@@ -0,0 +1,176 @@
+From 213f1fe0d76d30eaed6e5853057defc43e6df2c9 Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Tue, 14 Apr 2015 17:41:48 +0800
+Subject: [PATCH] CVE-2015-1819 Enforce the reader to run in constant memory
+
+One of the operation on the reader could resolve entities
+leading to the classic expansion issue. Make sure the
+buffer used for xmlreader operation is bounded.
+Introduce a new allocation type for the buffers for this effect.
+---
+ buf.c                 | 43 ++++++++++++++++++++++++++++++++++++++++++-
+ include/libxml/tree.h |  3 ++-
+ xmlreader.c           | 20 +++++++++++++++++++-
+ 3 files changed, 63 insertions(+), 3 deletions(-)
+
+diff --git a/buf.c b/buf.c
+index 6efc7b6..07922ff 100644
+--- a/buf.c
++++ b/buf.c
+@@ -27,6 +27,7 @@
+ #include <libxml/tree.h>
+ #include <libxml/globals.h>
+ #include <libxml/tree.h>
++#include <libxml/parserInternals.h> /* for XML_MAX_TEXT_LENGTH */
+ #include "buf.h"
+ 
+ #define WITH_BUFFER_COMPAT
+@@ -299,7 +300,8 @@ xmlBufSetAllocationScheme(xmlBufPtr buf,
+     if ((scheme == XML_BUFFER_ALLOC_DOUBLEIT) ||
+         (scheme == XML_BUFFER_ALLOC_EXACT) ||
+         (scheme == XML_BUFFER_ALLOC_HYBRID) ||
+-        (scheme == XML_BUFFER_ALLOC_IMMUTABLE)) {
++        (scheme == XML_BUFFER_ALLOC_IMMUTABLE) ||
++	(scheme == XML_BUFFER_ALLOC_BOUNDED)) {
+ 	buf->alloc = scheme;
+         if (buf->buffer)
+             buf->buffer->alloc = scheme;
+@@ -458,6 +460,18 @@ xmlBufGrowInternal(xmlBufPtr buf, size_t len) {
+     size = buf->use + len + 100;
+ #endif
+ 
++    if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++        /*
++	 * Used to provide parsing limits
++	 */
++        if ((buf->use + len >= XML_MAX_TEXT_LENGTH) ||
++	    (buf->size >= XML_MAX_TEXT_LENGTH)) {
++	    xmlBufMemoryError(buf, "buffer error: text too long\n");
++	    return(0);
++	}
++	if (size >= XML_MAX_TEXT_LENGTH)
++	    size = XML_MAX_TEXT_LENGTH;
++    }
+     if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
+         size_t start_buf = buf->content - buf->contentIO;
+ 
+@@ -739,6 +753,15 @@ xmlBufResize(xmlBufPtr buf, size_t size)
+     CHECK_COMPAT(buf)
+ 
+     if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return(0);
++    if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++        /*
++	 * Used to provide parsing limits
++	 */
++        if (size >= XML_MAX_TEXT_LENGTH) {
++	    xmlBufMemoryError(buf, "buffer error: text too long\n");
++	    return(0);
++	}
++    }
+ 
+     /* Don't resize if we don't have to */
+     if (size < buf->size)
+@@ -867,6 +890,15 @@ xmlBufAdd(xmlBufPtr buf, const xmlChar *str, int len) {
+ 
+     needSize = buf->use + len + 2;
+     if (needSize > buf->size){
++	if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++	    /*
++	     * Used to provide parsing limits
++	     */
++	    if (needSize >= XML_MAX_TEXT_LENGTH) {
++		xmlBufMemoryError(buf, "buffer error: text too long\n");
++		return(-1);
++	    }
++	}
+         if (!xmlBufResize(buf, needSize)){
+ 	    xmlBufMemoryError(buf, "growing buffer");
+             return XML_ERR_NO_MEMORY;
+@@ -938,6 +970,15 @@ xmlBufAddHead(xmlBufPtr buf, const xmlChar *str, int len) {
+     }
+     needSize = buf->use + len + 2;
+     if (needSize > buf->size){
++	if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
++	    /*
++	     * Used to provide parsing limits
++	     */
++	    if (needSize >= XML_MAX_TEXT_LENGTH) {
++		xmlBufMemoryError(buf, "buffer error: text too long\n");
++		return(-1);
++	    }
++	}
+         if (!xmlBufResize(buf, needSize)){
+ 	    xmlBufMemoryError(buf, "growing buffer");
+             return XML_ERR_NO_MEMORY;
+diff --git a/include/libxml/tree.h b/include/libxml/tree.h
+index 2f90717..4a9b3bc 100644
+--- a/include/libxml/tree.h
++++ b/include/libxml/tree.h
+@@ -76,7 +76,8 @@ typedef enum {
+     XML_BUFFER_ALLOC_EXACT,	/* grow only to the minimal size */
+     XML_BUFFER_ALLOC_IMMUTABLE, /* immutable buffer */
+     XML_BUFFER_ALLOC_IO,	/* special allocation scheme used for I/O */
+-    XML_BUFFER_ALLOC_HYBRID	/* exact up to a threshold, and doubleit thereafter */
++    XML_BUFFER_ALLOC_HYBRID,	/* exact up to a threshold, and doubleit thereafter */
++    XML_BUFFER_ALLOC_BOUNDED	/* limit the upper size of the buffer */
+ } xmlBufferAllocationScheme;
+ 
+ /**
+diff --git a/xmlreader.c b/xmlreader.c
+index f19e123..471e7e2 100644
+--- a/xmlreader.c
++++ b/xmlreader.c
+@@ -2091,6 +2091,9 @@ xmlNewTextReader(xmlParserInputBufferPtr input, const char *URI) {
+ 		"xmlNewTextReader : malloc failed\n");
+ 	return(NULL);
+     }
++    /* no operation on a reader should require a huge buffer */
++    xmlBufSetAllocationScheme(ret->buffer,
++			      XML_BUFFER_ALLOC_BOUNDED);
+     ret->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
+     if (ret->sax == NULL) {
+ 	xmlBufFree(ret->buffer);
+@@ -3616,6 +3619,7 @@ xmlTextReaderConstValue(xmlTextReaderPtr reader) {
+ 	    return(((xmlNsPtr) node)->href);
+         case XML_ATTRIBUTE_NODE:{
+ 	    xmlAttrPtr attr = (xmlAttrPtr) node;
++	    const xmlChar *ret;
+ 
+ 	    if ((attr->children != NULL) &&
+ 	        (attr->children->type == XML_TEXT_NODE) &&
+@@ -3629,10 +3633,21 @@ xmlTextReaderConstValue(xmlTextReaderPtr reader) {
+                                         "xmlTextReaderSetup : malloc failed\n");
+                         return (NULL);
+                     }
++		    xmlBufSetAllocationScheme(reader->buffer,
++		                              XML_BUFFER_ALLOC_BOUNDED);
+                 } else
+                     xmlBufEmpty(reader->buffer);
+ 	        xmlBufGetNodeContent(reader->buffer, node);
+-		return(xmlBufContent(reader->buffer));
++		ret = xmlBufContent(reader->buffer);
++		if (ret == NULL) {
++		    /* error on the buffer best to reallocate */
++		    xmlBufFree(reader->buffer);
++		    reader->buffer = xmlBufCreateSize(100);
++		    xmlBufSetAllocationScheme(reader->buffer,
++		                              XML_BUFFER_ALLOC_BOUNDED);
++		    ret = BAD_CAST "";
++		}
++		return(ret);
+ 	    }
+ 	    break;
+ 	}
+@@ -5131,6 +5146,9 @@ xmlTextReaderSetup(xmlTextReaderPtr reader,
+                         "xmlTextReaderSetup : malloc failed\n");
+         return (-1);
+     }
++    /* no operation on a reader should require a huge buffer */
++    xmlBufSetAllocationScheme(reader->buffer,
++			      XML_BUFFER_ALLOC_BOUNDED);
+     if (reader->sax == NULL)
+ 	reader->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
+     if (reader->sax == NULL) {
+-- 
+2.3.5
+
diff --git a/dev-libs/libxml2/files/libxml2-2.9.2-missing-entities.patch b/dev-libs/libxml2/files/libxml2-2.9.2-missing-entities.patch
new file mode 100644
index 000000000000..7a10e206ad82
--- /dev/null
+++ b/dev-libs/libxml2/files/libxml2-2.9.2-missing-entities.patch
@@ -0,0 +1,31 @@
+From 72a46a519ce7326d9a00f0b6a7f2a8e958cd1675 Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Thu, 23 Oct 2014 11:35:36 +0800
+Subject: [PATCH] Fix missing entities after CVE-2014-3660 fix
+
+For https://bugzilla.gnome.org/show_bug.cgi?id=738805
+
+The fix for CVE-2014-3660 introduced a regression in some case
+where entity substitution is required and the entity is used
+first in anotther entity referenced from an attribute value
+---
+ parser.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/parser.c b/parser.c
+index 67c9dfd..a8d1b67 100644
+--- a/parser.c
++++ b/parser.c
+@@ -7235,7 +7235,8 @@ xmlParseReference(xmlParserCtxtPtr ctxt) {
+      * far more secure as the parser will only process data coming from
+      * the document entity by default.
+      */
+-    if ((ent->checked == 0) &&
++    if (((ent->checked == 0) ||
++         ((ent->children == NULL) && (ctxt->options & XML_PARSE_NOENT))) &&
+         ((ent->etype != XML_EXTERNAL_GENERAL_PARSED_ENTITY) ||
+          (ctxt->options & (XML_PARSE_NOENT | XML_PARSE_DTDVALID)))) {
+ 	unsigned long oldnbent = ctxt->nbentities;
+-- 
+2.3.5
+
diff --git a/dev-libs/libxml2/files/libxml2-2.9.2-threads-declarations.patch b/dev-libs/libxml2/files/libxml2-2.9.2-threads-declarations.patch
new file mode 100644
index 000000000000..1236f622d6a4
--- /dev/null
+++ b/dev-libs/libxml2/files/libxml2-2.9.2-threads-declarations.patch
@@ -0,0 +1,48 @@
+From fff8a6b87e05200a0ad0af6f86c2e859c7de9172 Mon Sep 17 00:00:00 2001
+From: Michael Heimpold <mhei@heimpold.de>
+Date: Mon, 22 Dec 2014 11:12:12 +0800
+Subject: [PATCH] threads: use forward declarations only for glibc
+
+Fixes bug #704908
+
+The declarations of pthread functions, used to generate weak references
+to them, fail to suppress macros. Thus, if any pthread function has
+been provided as a macro, compiling threads.c will fail.
+This breaks on musl libc, which defines pthread_equal as a macro (in
+addition to providing the function, as required).
+
+Prevent the declarations for e.g. musl libc by refining the condition.
+
+The idea for this solution was borrowed from the alpine linux guys, see
+http://git.alpinelinux.org/cgit/aports/tree/main/libxml2/libxml2-pthread.patch
+
+Signed-off-by: Michael Heimpold <mhei@heimpold.de>
+---
+ threads.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/threads.c b/threads.c
+index 8921204..78006a2 100644
+--- a/threads.c
++++ b/threads.c
+@@ -47,7 +47,7 @@
+ #ifdef HAVE_PTHREAD_H
+ 
+ static int libxml_is_threaded = -1;
+-#ifdef __GNUC__
++#if defined(__GNUC__) && defined(__GLIBC__)
+ #ifdef linux
+ #if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (__GNUC__ > 3)
+ extern int pthread_once (pthread_once_t *__once_control,
+@@ -89,7 +89,7 @@ extern int pthread_cond_signal ()
+ 	   __attribute((weak));
+ #endif
+ #endif /* linux */
+-#endif /* __GNUC__ */
++#endif /* defined(__GNUC__) && defined(__GLIBC__) */
+ #endif /* HAVE_PTHREAD_H */
+ 
+ /*
+-- 
+2.3.5
+
diff --git a/dev-libs/libxml2/files/libxml2-2.9.2-timsort.patch b/dev-libs/libxml2/files/libxml2-2.9.2-timsort.patch
new file mode 100644
index 000000000000..c179d47ef2db
--- /dev/null
+++ b/dev-libs/libxml2/files/libxml2-2.9.2-timsort.patch
@@ -0,0 +1,128 @@
+From 9b987f8c98763ee569bde90b5268b43474ca106c Mon Sep 17 00:00:00 2001
+From: Christopher Swenson <chris@caswenson.com>
+Date: Fri, 27 Feb 2015 14:55:49 +0800
+Subject: [PATCH] Fix timsort invariant loop re: Envisage article
+
+See http://envisage-project.eu/proving-android-java-and-python-sorting-algorithm-is-broken-and-how-to-fix-it/
+
+We use a "runLen" array of size 128, so it should be nearly impossible
+to have our implementation overflow.
+
+But in any case, the fix is relatively simple -- checking two extra
+conditions in the invariant calculation.
+
+I also took this opportunity to remove some redundancy in the
+left/right merge logic in the invariant loop.
+---
+ timsort.h | 74 +++++++++++++++++++++++++++++++++------------------------------
+ 1 file changed, 39 insertions(+), 35 deletions(-)
+
+diff --git a/timsort.h b/timsort.h
+index efa3aab..795f272 100644
+--- a/timsort.h
++++ b/timsort.h
+@@ -392,62 +392,66 @@ static void TIM_SORT_MERGE(SORT_TYPE *dst, const TIM_SORT_RUN_T *stack, const in
+ 
+ static int TIM_SORT_COLLAPSE(SORT_TYPE *dst, TIM_SORT_RUN_T *stack, int stack_curr, TEMP_STORAGE_T *store, const size_t size)
+ {
+-  while (1)
+-  {
+-    int64_t A, B, C;
++  while (1) {
++    int64_t A, B, C, D;
++    int ABC, BCD, BD, CD;
++
+     /* if the stack only has one thing on it, we are done with the collapse */
+-    if (stack_curr <= 1) break;
++    if (stack_curr <= 1) {
++      break;
++    }
++
+     /* if this is the last merge, just do it */
+-    if ((stack_curr == 2) &&
+-        (stack[0].length + stack[1].length == (int64_t) size))
+-    {
++    if ((stack_curr == 2) && (stack[0].length + stack[1].length == size)) {
+       TIM_SORT_MERGE(dst, stack, stack_curr, store);
+       stack[0].length += stack[1].length;
+       stack_curr--;
+       break;
+     }
+     /* check if the invariant is off for a stack of 2 elements */
+-    else if ((stack_curr == 2) && (stack[0].length <= stack[1].length))
+-    {
++    else if ((stack_curr == 2) && (stack[0].length <= stack[1].length)) {
+       TIM_SORT_MERGE(dst, stack, stack_curr, store);
+       stack[0].length += stack[1].length;
+       stack_curr--;
+       break;
+-    }
+-    else if (stack_curr == 2)
++    } else if (stack_curr == 2) {
+       break;
++    }
+ 
+-    A = stack[stack_curr - 3].length;
+-    B = stack[stack_curr - 2].length;
+-    C = stack[stack_curr - 1].length;
++    B = stack[stack_curr - 3].length;
++    C = stack[stack_curr - 2].length;
++    D = stack[stack_curr - 1].length;
+ 
+-    /* check first invariant */
+-    if (A <= B + C)
+-    {
+-      if (A < C)
+-      {
+-        TIM_SORT_MERGE(dst, stack, stack_curr - 1, store);
+-        stack[stack_curr - 3].length += stack[stack_curr - 2].length;
+-        stack[stack_curr - 2] = stack[stack_curr - 1];
+-        stack_curr--;
+-      }
+-      else
+-      {
+-        TIM_SORT_MERGE(dst, stack, stack_curr, store);
+-        stack[stack_curr - 2].length += stack[stack_curr - 1].length;
+-        stack_curr--;
+-      }
++    if (stack_curr >= 4) {
++      A = stack[stack_curr - 4].length;
++      ABC = (A <= B + C);
++    } else {
++      ABC = 0;
+     }
+-    /* check second invariant */
+-    else if (B <= C)
+-    {
++
++    BCD = (B <= C + D) || ABC;
++    CD = (C <= D);
++    BD = (B < D);
++
++    /* Both invariants are good */
++    if (!BCD && !CD) {
++      break;
++    }
++
++    /* left merge */
++    if (BCD && !CD) {
++      TIM_SORT_MERGE(dst, stack, stack_curr - 1, store);
++      stack[stack_curr - 3].length += stack[stack_curr - 2].length;
++      stack[stack_curr - 2] = stack[stack_curr - 1];
++      stack_curr--;
++    } else {
++      /* right merge */
+       TIM_SORT_MERGE(dst, stack, stack_curr, store);
+       stack[stack_curr - 2].length += stack[stack_curr - 1].length;
+       stack_curr--;
+     }
+-    else
+-      break;
+   }
++
+   return stack_curr;
+ }
+ 
+-- 
+2.3.5
+
diff --git a/dev-libs/libxml2/libxml2-2.9.2-r1.ebuild b/dev-libs/libxml2/libxml2-2.9.2-r1.ebuild
new file mode 100644
index 000000000000..9c6add2a4dc2
--- /dev/null
+++ b/dev-libs/libxml2/libxml2-2.9.2-r1.ebuild
@@ -0,0 +1,212 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/dev-libs/libxml2/libxml2-2.9.2-r1.ebuild,v 1.1 2015/04/19 16:09:17 tetromino Exp $
+
+EAPI="5"
+PYTHON_COMPAT=( python{2_7,3_3,3_4} )
+PYTHON_REQ_USE="xml"
+
+inherit libtool flag-o-matic eutils python-r1 autotools prefix multilib-minimal
+
+DESCRIPTION="Version 2 of the library to manipulate XML files"
+HOMEPAGE="http://www.xmlsoft.org/"
+
+LICENSE="MIT"
+SLOT="2"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~ppc-aix ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~x64-freebsd ~x86-freebsd ~hppa-hpux ~ia64-hpux ~x86-interix ~amd64-linux ~arm-linux ~ia64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris ~x86-winnt"
+IUSE="debug examples icu ipv6 lzma python readline static-libs test"
+
+XSTS_HOME="http://www.w3.org/XML/2004/xml-schema-test-suite"
+XSTS_NAME_1="xmlschema2002-01-16"
+XSTS_NAME_2="xmlschema2004-01-14"
+XSTS_TARBALL_1="xsts-2002-01-16.tar.gz"
+XSTS_TARBALL_2="xsts-2004-01-14.tar.gz"
+XMLCONF_TARBALL="xmlts20080827.tar.gz"
+
+SRC_URI="ftp://xmlsoft.org/${PN}/${PN}-${PV/_rc/-rc}.tar.gz
+	test? (
+		${XSTS_HOME}/${XSTS_NAME_1}/${XSTS_TARBALL_1}
+		${XSTS_HOME}/${XSTS_NAME_2}/${XSTS_TARBALL_2}
+		http://www.w3.org/XML/Test/${XMLCONF_TARBALL} )"
+
+COMMON_DEPEND="
+	>=sys-libs/zlib-1.2.8-r1:=[${MULTILIB_USEDEP}]
+	icu? ( >=dev-libs/icu-51.2-r1:=[${MULTILIB_USEDEP}] )
+	lzma? ( >=app-arch/xz-utils-5.0.5-r1:=[${MULTILIB_USEDEP}] )
+	python? ( ${PYTHON_DEPS} )
+	readline? ( sys-libs/readline:= )
+"
+RDEPEND="${COMMON_DEPEND}
+	abi_x86_32? ( !<=app-emulation/emul-linux-x86-baselibs-20131008-r6
+		!app-emulation/emul-linux-x86-baselibs[-abi_x86_32(-)] )
+"
+DEPEND="${COMMON_DEPEND}
+	dev-util/gtk-doc-am
+	virtual/pkgconfig
+	hppa? ( >=sys-devel/binutils-2.15.92.0.2 )
+"
+
+S="${WORKDIR}/${PN}-${PV%_rc*}"
+
+MULTILIB_CHOST_TOOLS=(
+	/usr/bin/xml2-config
+)
+
+src_unpack() {
+	# ${A} isn't used to avoid unpacking of test tarballs into $WORKDIR,
+	# as they are needed as tarballs in ${S}/xstc instead and not unpacked
+	unpack ${P/_rc/-rc}.tar.gz
+	cd "${S}"
+
+	if use test; then
+		cp "${DISTDIR}/${XSTS_TARBALL_1}" \
+			"${DISTDIR}/${XSTS_TARBALL_2}" \
+			"${S}"/xstc/ \
+			|| die "Failed to install test tarballs"
+		unpack ${XMLCONF_TARBALL}
+	fi
+}
+
+src_prepare() {
+	DOCS=( AUTHORS ChangeLog NEWS README* TODO* )
+
+	# Patches needed for prefix support
+	epatch "${FILESDIR}"/${PN}-2.7.1-catalog_path.patch
+	epatch "${FILESDIR}"/${PN}-2.8.0_rc1-winnt.patch
+
+	eprefixify catalog.c xmlcatalog.c runtest.c xmllint.c
+
+#	epunt_cxx # if we don't eautoreconf
+
+	# Important patches from master
+	epatch \
+		"${FILESDIR}/${PN}-2.9.2-revert-missing-initialization.patch" \
+		"${FILESDIR}/${PN}-2.9.2-missing-entities.patch" \
+		"${FILESDIR}/${PN}-2.9.2-threads-declarations.patch" \
+		"${FILESDIR}/${PN}-2.9.2-timsort.patch" \
+		"${FILESDIR}/${PN}-2.9.2-constant-memory.patch"
+
+	# Please do not remove, as else we get references to PORTAGE_TMPDIR
+	# in /usr/lib/python?.?/site-packages/libxml2mod.la among things.
+	# We now need to run eautoreconf at the end to prevent maintainer mode.
+#	elibtoolize
+
+	# Use pkgconfig to find icu to properly support multilib, upstream bug #738751
+	epatch "${FILESDIR}/${PN}-2.9.2-icu-pkgconfig.patch"
+
+	eautoreconf
+}
+
+multilib_src_configure() {
+	# filter seemingly problematic CFLAGS (#26320)
+	filter-flags -fprefetch-loop-arrays -funroll-loops
+
+	# USE zlib support breaks gnome2
+	# (libgnomeprint for instance fails to compile with
+	# fresh install, and existing) - <azarah@gentoo.org> (22 Dec 2002).
+
+	# The meaning of the 'debug' USE flag does not apply to the --with-debug
+	# switch (enabling the libxml2 debug module). See bug #100898.
+
+	# --with-mem-debug causes unusual segmentation faults (bug #105120).
+
+	libxml2_configure() {
+		ECONF_SOURCE="${S}" econf \
+			--with-html-subdir=${PF}/html \
+			--docdir="${EPREFIX}/usr/share/doc/${PF}" \
+			$(use_with debug run-debug) \
+			$(use_with icu) \
+			$(use_with lzma) \
+			$(use_enable ipv6) \
+			$(use_enable static-libs static) \
+			$(multilib_native_use_with readline) \
+			$(multilib_native_use_with readline history) \
+			"$@"
+	}
+
+	libxml2_py_configure() {
+		mkdir -p "${BUILD_DIR}" || die # ensure python build dirs exist
+		run_in_build_dir libxml2_configure "--with-python=${PYTHON}" # odd build system
+	}
+
+	libxml2_configure --without-python # build python bindings separately
+
+	if multilib_is_native_abi && use python; then
+		python_foreach_impl libxml2_py_configure
+	fi
+}
+
+multilib_src_compile() {
+	default
+	if multilib_is_native_abi && use python; then
+		local native_builddir=${BUILD_DIR}
+		python_foreach_impl libxml2_py_emake top_builddir="${native_builddir}" all
+	fi
+}
+
+multilib_src_test() {
+	default
+	multilib_is_native_abi && use python && python_foreach_impl libxml2_py_emake test
+}
+
+multilib_src_install() {
+	emake DESTDIR="${D}" \
+		EXAMPLES_DIR="${EPREFIX}"/usr/share/doc/${PF}/examples install
+
+	if multilib_is_native_abi && use python; then
+		python_foreach_impl libxml2_py_emake DESTDIR="${D}" install
+		python_foreach_impl python_optimize
+	fi
+}
+
+multilib_src_install_all() {
+	# on windows, xmllint is installed by interix libxml2 in parent prefix.
+	# this is the version to use. the native winnt version does not support
+	# symlinks, which makes repoman fail if the portage tree is linked in
+	# from another location (which is my default). -- mduft
+	if [[ ${CHOST} == *-winnt* ]]; then
+		rm -rf "${ED}"/usr/bin/xmllint
+		rm -rf "${ED}"/usr/bin/xmlcatalog
+	fi
+
+	rm -rf "${ED}"/usr/share/doc/${P}
+	einstalldocs
+
+	if ! use python; then
+		rm -rf "${ED}"/usr/share/doc/${PF}/python
+		rm -rf "${ED}"/usr/share/doc/${PN}-python-${PV}
+	fi
+
+	if ! use examples; then
+		rm -rf "${ED}/usr/share/doc/${PF}/examples"
+		rm -rf "${ED}/usr/share/doc/${PF}/python/examples"
+	fi
+
+	prune_libtool_files --modules
+}
+
+pkg_postinst() {
+	# We don't want to do the xmlcatalog during stage1, as xmlcatalog will not
+	# be in / and stage1 builds to ROOT=/tmp/stage1root. This fixes bug #208887.
+	if [[ "${ROOT}" != "/" ]]; then
+		elog "Skipping XML catalog creation for stage building (bug #208887)."
+	else
+		# need an XML catalog, so no-one writes to a non-existent one
+		CATALOG="${EROOT}etc/xml/catalog"
+
+		# we dont want to clobber an existing catalog though,
+		# only ensure that one is there
+		# <obz@gentoo.org>
+		if [[ ! -e ${CATALOG} ]]; then
+			[[ -d "${EROOT}etc/xml" ]] || mkdir -p "${EROOT}etc/xml"
+			"${EPREFIX}"/usr/bin/xmlcatalog --create > "${CATALOG}"
+			einfo "Created XML catalog in ${CATALOG}"
+		fi
+	fi
+}
+
+libxml2_py_emake() {
+	pushd "${BUILD_DIR}/python" > /dev/null || die
+	emake "$@"
+	popd > /dev/null
+}