fdo#70393: move liblangtag to a subdir of external

Change-Id: I18cded289591bdf872c7a818326a35ac00d38482
Reviewed-on: https://gerrit.libreoffice.org/6330
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>

18 files changed, 406 insertions, 0 deletions

diff --git a/external/liblangtag/ExternalPackage_langtag_data.mk b/external/liblangtag/ExternalPackage_langtag_data.mk
new file mode 100644
index 000000000000..3435e7080e1c
--- /dev/null
+++ b/external/liblangtag/ExternalPackage_langtag_data.mk
@@ -0,0 +1,28 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_ExternalPackage_ExternalPackage,langtag_data,langtag))
+
+$(eval $(call gb_ExternalPackage_add_unpacked_files,langtag_data,unittest/install/$(LIBO_SHARE_FOLDER)/liblangtag,data/language-subtag-registry.xml))
+$(eval $(call gb_ExternalPackage_add_unpacked_files,langtag_data,unittest/install/$(LIBO_SHARE_FOLDER)/liblangtag/common/bcp47,\
+	data/common/bcp47/calendar.xml \
+	data/common/bcp47/collation.xml \
+	data/common/bcp47/currency.xml \
+	data/common/bcp47/number.xml \
+	data/common/bcp47/timezone.xml \
+	data/common/bcp47/transform.xml \
+	data/common/bcp47/transform_ime.xml \
+	data/common/bcp47/transform_keyboard.xml \
+	data/common/bcp47/transform_mt.xml \
+	data/common/bcp47/transform_private_use.xml \
+	data/common/bcp47/variant.xml \
+))
+$(eval $(call gb_ExternalPackage_add_unpacked_files,langtag_data,unittest/install/$(LIBO_SHARE_FOLDER)/liblangtag/common/supplemental,data/common/supplemental/likelySubtags.xml))
+
+# vim: set shiftwidth=4 tabstop=4 noexpandtab:
diff --git a/external/liblangtag/ExternalPackage_liblangtag_data.mk b/external/liblangtag/ExternalPackage_liblangtag_data.mk
new file mode 100644
index 000000000000..0991d9621ea2
--- /dev/null
+++ b/external/liblangtag/ExternalPackage_liblangtag_data.mk
@@ -0,0 +1,36 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_ExternalPackage_ExternalPackage,liblangtag_data,langtag))
+
+$(eval $(call gb_ExternalPackage_set_outdir,liblangtag_data,$(INSTROOT)))
+
+$(eval $(call gb_ExternalPackage_add_unpacked_files,liblangtag_data,$(LIBO_SHARE_FOLDER)/liblangtag,\
+	data/language-subtag-registry.xml \
+))
+
+$(eval $(call gb_ExternalPackage_add_unpacked_files,liblangtag_data,$(LIBO_SHARE_FOLDER)/liblangtag/common/bcp47,\
+	data/common/bcp47/calendar.xml \
+	data/common/bcp47/collation.xml \
+	data/common/bcp47/currency.xml \
+	data/common/bcp47/number.xml \
+	data/common/bcp47/timezone.xml \
+	data/common/bcp47/transform.xml \
+	data/common/bcp47/transform_ime.xml \
+	data/common/bcp47/transform_keyboard.xml \
+	data/common/bcp47/transform_mt.xml \
+	data/common/bcp47/transform_private_use.xml \
+	data/common/bcp47/variant.xml \
+))
+
+$(eval $(call gb_ExternalPackage_add_unpacked_files,liblangtag_data,$(LIBO_SHARE_FOLDER)/liblangtag/common/supplemental,\
+	data/common/supplemental/likelySubtags.xml \
+))
+
+# vim: set shiftwidth=4 tabstop=4 noexpandtab:
diff --git a/external/liblangtag/ExternalProject_langtag.mk b/external/liblangtag/ExternalProject_langtag.mk
new file mode 100644
index 000000000000..23619ed3b2de
--- /dev/null
+++ b/external/liblangtag/ExternalProject_langtag.mk
@@ -0,0 +1,40 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_ExternalProject_ExternalProject,langtag))
+
+$(eval $(call gb_ExternalProject_use_external,langtag,libxml2))
+
+$(eval $(call gb_ExternalProject_use_autoconf,langtag,build))
+
+$(eval $(call gb_ExternalProject_register_targets,langtag,\
+	build \
+))
+
+# disable ccache on windows, as it doesn't cope with the quoted defines
+# liblangtag uses (-DBUILDDIR="\"$(abs_top_builddir)\"" and similar).
+# Results in "cl : Command line error D8003 : missing source filename"
+$(call gb_ExternalProject_get_state_target,langtag,build):
+	$(call gb_ExternalProject_run,build,\
+		./configure --disable-modules --disable-test --disable-introspection --disable-shared --enable-static --with-pic \
+		$(if $(filter WNTMSC,$(OS)$(COM)),--disable-rebuild-data) \
+		$(if $(filter TRUE,$(HAVE_GCC_BUILTIN_ATOMIC)),"lt_cv_has_atomic=yes","lt_cv_has_atomic=no") \
+		$(if $(filter YES,$(CROSS_COMPILING)),--build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM) "ac_cv_va_copy=no") \
+		$(if $(filter NO,$(SYSTEM_LIBXML)),LIBXML2_CFLAGS="-I$(call gb_UnpackedTarball_get_dir,xml2)/include" \
+			LIBXML2_LIBS=$(if $(filter WNTMSC,$(OS)$(COM)),"-L$(OUTDIR)/lib -llibxml2","-L$(gb_Helper_OUTDIRLIBDIR) -lxml2"),\
+		$(if $(filter MACOSX,$(OS)),LIBXML2_CFLAGS="$(LIBXML_CFLAGS)" LIBXML2_LIBS="$(LIBXML_LIBS)")) \
+		$(if $(filter MACOSX,$(OS)),--prefix=/@.__________________________________________________OOO) \
+		$(if $(filter-out LINUX FREEBSD,$(OS)),,LDFLAGS="-Wl$(COMMA)-z$(COMMA)origin -Wl$(COMMA)-rpath,\\"\$$\$$ORIGIN:'\'\$$\$$ORIGIN/../ure-link/lib) \
+		$(if $(filter-out SOLARIS,$(OS)),,LDFLAGS="-Wl$(COMMA)-z$(COMMA)origin -Wl$(COMMA)-R$(COMMA)\\"\$$\$$ORIGIN:'\'\$$\$$ORIGIN/../ure-link/lib) \
+		$(if $(filter-out WNTGCC,$(OS)$(COM)),,LDFLAGS="-Wl$(COMMA)--enable-runtime-pseudo-reloc-v2") \
+		&& $(if $(filter WNTMSC,$(OS)$(COM)),REAL_CC="$(shell cygpath -w $(lastword $(CC)))") \
+		   $(if $(VERBOSE)$(verbose),V=1) \
+		   $(MAKE) \
+	)
+# vim: set noet sw=4 ts=4:
diff --git a/external/liblangtag/Makefile b/external/liblangtag/Makefile
new file mode 100644
index 000000000000..e4968cf85fb6
--- /dev/null
+++ b/external/liblangtag/Makefile
@@ -0,0 +1,7 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+
+module_directory:=$(dir $(realpath $(firstword $(MAKEFILE_LIST))))
+
+include $(module_directory)/../../solenv/gbuild/partial_build.mk
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/liblangtag/Module_liblangtag.mk b/external/liblangtag/Module_liblangtag.mk
new file mode 100644
index 000000000000..54827d2e9330
--- /dev/null
+++ b/external/liblangtag/Module_liblangtag.mk
@@ -0,0 +1,19 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_Module_Module,liblangtag))
+
+$(eval $(call gb_Module_add_targets,liblangtag,\
+	UnpackedTarball_langtag \
+	ExternalPackage_langtag_data \
+	ExternalProject_langtag \
+	ExternalPackage_liblangtag_data \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/external/liblangtag/README b/external/liblangtag/README
new file mode 100644
index 000000000000..694daee093e6
--- /dev/null
+++ b/external/liblangtag/README
@@ -0,0 +1 @@
+From [http://tagoh.bitbucket.org/liblangtag/]. An interface for BCP47 language tags.
diff --git a/external/liblangtag/UnpackedTarball_langtag.mk b/external/liblangtag/UnpackedTarball_langtag.mk
new file mode 100644
index 000000000000..88f7f167b437
--- /dev/null
+++ b/external/liblangtag/UnpackedTarball_langtag.mk
@@ -0,0 +1,34 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_UnpackedTarball_UnpackedTarball,langtag))
+
+$(eval $(call gb_UnpackedTarball_set_tarball,langtag,$(LIBLANGTAG_TARBALL),,liblangtag))
+
+$(eval $(call gb_UnpackedTarball_add_patches,langtag,\
+	external/liblangtag/liblangtag-0.5.1-msvc-warning.patch \
+	external/liblangtag/liblangtag-0.5.1-vsnprintf.patch \
+	external/liblangtag/liblangtag-0.5.1-msvc-ssize_t.patch \
+	external/liblangtag/liblangtag-0.5.1-msvc-snprintf.patch \
+	external/liblangtag/liblangtag-0.5.1-msvc-strtoull.patch \
+	external/liblangtag/liblangtag-0.5.1-scope-declaration.patch \
+	external/liblangtag/liblangtag-0.5.1-redefinition-of-typedef.patch \
+	external/liblangtag/liblangtag-0.5.1-undefined-have-sys-param-h.patch \
+	external/liblangtag/liblangtag-0.5.1-windows-do-not-prepend-dir-separator.patch \
+	external/liblangtag/liblangtag-0.5.1-unistd.patch \
+))
+
+ifeq ($(OS),WNT)
+ifeq ($(COM),GCC)
+$(eval $(call gb_UnpackedTarball_add_patches,langtag,\
+	external/liblangtag/liblangtag-0.5.1-mingw.patch \
+))
+endif
+endif
+# vim: set noet sw=4 ts=4:
diff --git a/external/liblangtag/liblangtag-0.5.1-mingw.patch b/external/liblangtag/liblangtag-0.5.1-mingw.patch
new file mode 100644
index 000000000000..54790e99a0c7
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-mingw.patch
@@ -0,0 +1,64 @@
+--- misc/liblangtag-0.4.0/liblangtag/lt-ext-module.c	2013-06-14 15:06:13.629182430 +0100
++++ misc/liblangtag-0.4.0/liblangtag/lt-ext-module.c	2013-06-14 15:06:43.537534204 +0100
+@@ -608,8 +608,8 @@
+ 			size_t len;
+ 
+ 			while (1) {
+-				if (readdir_r(dir, &dent, &dresult) || dresult == NULL)
+-					break;
++/*				if (readdir_r(dir, &dent, &dresult) || dresult == NULL)
++					break;*/ abort(); /* we do not use liblangtag-gobject anyway */
+ 
+ 				len = strlen(dent.d_name);
+ 				if (len > suffix_len &&
+--- misc/liblangtag-0.4.0/liblangtag/Makefile.am	2013-06-14 15:06:13.636182512 +0100
++++ misc/liblangtag-0.4.0/liblangtag/Makefile.am	2013-06-14 15:08:53.556063464 +0100
+@@ -211,6 +211,7 @@
+ liblangtag_la_LDFLAGS =						\
+ 	$(LDFLAGS)						\
+ 	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)	\
++	-no-undefined                                           \
+ 	$(NULL)
+ 
+ -include $(top_srcdir)/git.mk
+--- misc/liblangtag-0.4.0/liblangtag/Makefile.in	2013-06-14 15:06:13.636182512 +0100
++++ misc/liblangtag-0.4.0/liblangtag/Makefile.in	2013-06-14 15:09:07.204223994 +0100
+@@ -576,6 +576,7 @@
+ liblangtag_la_LDFLAGS = \
+ 	$(LDFLAGS)						\
+ 	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)	\
++	-no-undefined                                           \
+ 	$(NULL)
+ 
+ all: $(BUILT_SOURCES)
+--- misc/liblangtag-0.4.0/liblangtag-gobject/Makefile.am	2013-06-14 15:06:13.648182653 +0100
++++ misc/liblangtag-0.4.0/liblangtag-gobject/Makefile.am	2013-06-14 15:09:27.122458271 +0100
+@@ -149,6 +149,7 @@
+ liblangtag_gobject_la_LDFLAGS =						\
+ 	$(LDFLAGS)							\
+ 	-version-info $(LT_G_CURRENT):$(LT_G_REVISION):$(LT_G_AGE)	\
++	-no-undefined                                           \
+ 	$(NULL)
+ #
+ if HAVE_INTROSPECTION
+--- misc/liblangtag-0.4.0/liblangtag-gobject/Makefile.in	2013-06-14 15:06:13.648182653 +0100
++++ misc/liblangtag-0.4.0/liblangtag-gobject/Makefile.in	2013-06-14 15:09:33.099528574 +0100
+@@ -476,6 +476,7 @@
+ liblangtag_gobject_la_LDFLAGS = \
+ 	$(LDFLAGS)							\
+ 	-version-info $(LT_G_CURRENT):$(LT_G_REVISION):$(LT_G_AGE)	\
++	-no-undefined                                           \
+ 	$(NULL)
+ 
+ #
+--- misc/liblangtag-0.4.0/Makefile.am	2013-06-14 15:06:13.652182700 +0100
++++ misc/liblangtag-0.4.0/Makefile.am	2013-06-14 15:06:43.539534228 +0100
+@@ -6,7 +6,7 @@
+ SUBDIRS += liblangtag-gobject
+ endif
+ #SUBDIRS += docs tests
+-SUBDIRS += tests
++#SUBDIRS += tests
+ 
+ ACLOCAL_AMFLAGS = -I m4macros
+ 
diff --git a/external/liblangtag/liblangtag-0.5.1-msvc-snprintf.patch b/external/liblangtag/liblangtag-0.5.1-msvc-snprintf.patch
new file mode 100644
index 000000000000..61067e21b407
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-msvc-snprintf.patch
@@ -0,0 +1,25 @@
+diff -ru langtag.orig/liblangtag/lt-messages.c langtag/liblangtag/lt-messages.c
+--- UnpackedTarball/langtag.orig/liblangtag/lt-messages.c	2013-04-22 10:06:57.000000000 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-messages.c	2013-04-30 11:38:04.116532065 +0200
+@@ -85,13 +85,21 @@
+ 	clen = strlen(cs);
+ 	if (clen > 0) {
+ 		catstring = malloc(sizeof (char) * (clen + 6));
++#ifdef _WIN32
++		_snprintf(catstring, clen + 6, "[%s]: ", cs);
++#else
+ 		snprintf(catstring, clen + 6, "[%s]: ", cs);
++#endif
+ 		clen = strlen(catstring);
+ 	}
+ 	len = tlen + clen + 1;
+ 	retval = malloc(sizeof (char) * len);
+ 	if (retval) {
++#ifdef _WIN32
++		_snprintf(retval, len, "%s%s ", ts, catstring ? catstring : "");
++#else
+ 		snprintf(retval, len, "%s%s ", ts, catstring ? catstring : "");
++#endif
+ 	}
+ 	if (catstring)
+ 		free(catstring);
diff --git a/external/liblangtag/liblangtag-0.5.1-msvc-ssize_t.patch b/external/liblangtag/liblangtag-0.5.1-msvc-ssize_t.patch
new file mode 100644
index 000000000000..84774c18d657
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-msvc-ssize_t.patch
@@ -0,0 +1,12 @@
+diff -ru UnpackedTarball/langtag.orig/liblangtag/lt-macros.h UnpackedTarball/langtag/liblangtag/lt-macros.h
+--- UnpackedTarball/langtag.orig/liblangtag/lt-macros.h	2013-04-22 10:06:57.000000000 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-macros.h	2013-04-30 16:07:00.619638050 +0200
+@@ -261,7 +261,7 @@
+ 
+ LT_BEGIN_DECLS
+ 
+-#ifdef _MSC_VER
++#if defined(_MSC_VER) && !defined(ssize_t)
+ #  ifdef _M_AMD64
+ typedef signed long long	ssize_t;
+ #  else
diff --git a/external/liblangtag/liblangtag-0.5.1-msvc-strtoull.patch b/external/liblangtag/liblangtag-0.5.1-msvc-strtoull.patch
new file mode 100644
index 000000000000..e50dddb76c0a
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-msvc-strtoull.patch
@@ -0,0 +1,15 @@
+diff -ru langtag.orig/extensions/lt-ext-ldml-u.c langtag/extensions/lt-ext-ldml-u.c
+--- UnpackedTarball/langtag.orig/extensions/lt-ext-ldml-u.c	2013-04-22 10:06:56.000000000 +0200
++++ UnpackedTarball/langtag/extensions/lt-ext-ldml-u.c	2013-04-30 12:56:19.557490167 +0200
+@@ -137,7 +137,11 @@
+ 							if (!strchr(hexdigit, subtag[j]))
+ 								goto bail2;
+ 						}
++#ifdef _WIN32
++						x = _strtoui64(subtag, &p, 16);
++#else
+ 						x = strtoull(subtag, &p, 16);
++#endif
+ 						if (p && p[0] == 0 && x <= 0x10ffff) {
+ 							retval = TRUE;
+ 							xmlFree(name);
diff --git a/external/liblangtag/liblangtag-0.5.1-msvc-warning.patch b/external/liblangtag/liblangtag-0.5.1-msvc-warning.patch
new file mode 100644
index 000000000000..2d34fe8f0941
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-msvc-warning.patch
@@ -0,0 +1,21 @@
+--- misc/liblangtag-0.4.0/liblangtag/lt-ext-module.h	2012-02-02 06:02:45.000000000 +0100
++++ misc/build/liblangtag-0.4.0/liblangtag/lt-ext-module.h	2012-08-08 08:46:57.810860044 +0200
+@@ -143,12 +143,12 @@
+  * and #lt_ext_module_t and extend features.
+  */
+ struct _lt_ext_module_funcs_t {
+-	const lt_ext_module_singleton_func_t get_singleton;
+-	const lt_ext_module_data_new_func_t  create_data;
+-	const lt_ext_module_precheck_func_t  precheck_tag;
+-	const lt_ext_module_parse_func_t     parse_tag;
+-	const lt_ext_module_get_tag_func_t   get_tag;
+-	const lt_ext_module_validate_func_t  validate_tag;
++	lt_ext_module_singleton_func_t get_singleton;
++	lt_ext_module_data_new_func_t  create_data;
++	lt_ext_module_precheck_func_t  precheck_tag;
++	lt_ext_module_parse_func_t     parse_tag;
++	lt_ext_module_get_tag_func_t   get_tag;
++	lt_ext_module_validate_func_t  validate_tag;
+ };
+ 
+ 
diff --git a/external/liblangtag/liblangtag-0.5.1-redefinition-of-typedef.patch b/external/liblangtag/liblangtag-0.5.1-redefinition-of-typedef.patch
new file mode 100644
index 000000000000..1c9ac14077dd
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-redefinition-of-typedef.patch
@@ -0,0 +1,31 @@
+diff -ru langtag.orig/liblangtag/lt-trie.c langtag/liblangtag/lt-trie.c
+--- UnpackedTarball/langtag.orig/liblangtag/lt-trie.c	2013-04-30 04:37:30.000000000 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-trie.c	2013-04-30 14:57:50.777932196 +0200
+@@ -33,11 +33,6 @@
+ 	lt_iter_tmpl_t  parent;
+ 	lt_trie_node_t *root;
+ };
+-typedef struct _lt_trie_iter_t {
+-	lt_iter_t    parent;
+-	lt_list_t   *stack;
+-	lt_string_t *pos_str;
+-} lt_trie_iter_t;
+ 
+ /*< private >*/
+ static lt_trie_node_t *
+diff -ru langtag.orig/liblangtag/lt-trie.h langtag/liblangtag/lt-trie.h
+--- UnpackedTarball/langtag.orig/liblangtag/lt-trie.h	2013-04-30 04:44:36.000000000 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-trie.h	2013-04-30 14:57:57.746969291 +0200
+@@ -21,7 +21,11 @@
+ LT_BEGIN_DECLS
+ 
+ typedef struct _lt_trie_t	lt_trie_t;
+-typedef struct _lt_trie_iter_t  lt_trie_iter_t;
++typedef struct _lt_trie_iter_t {
++	lt_iter_t    parent;
++	lt_list_t   *stack;
++	lt_string_t *pos_str;
++} lt_trie_iter_t;
+ 
+ lt_trie_t      *lt_trie_new        (void);
+ lt_trie_t      *lt_trie_ref        (lt_trie_t         *trie);
diff --git a/external/liblangtag/liblangtag-0.5.1-scope-declaration.patch b/external/liblangtag/liblangtag-0.5.1-scope-declaration.patch
new file mode 100644
index 000000000000..69bc434b46da
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-scope-declaration.patch
@@ -0,0 +1,13 @@
+diff -ru langtag.orig/tests/variant-db.c langtag/tests/variant-db.c
+--- UnpackedTarball/langtag.orig/tests/variant-db.c	2013-04-22 10:06:57.000000000 +0200
++++ UnpackedTarball/langtag/tests/variant-db.c	2013-04-30 14:12:18.399306545 +0200
+@@ -53,8 +53,8 @@
+ 		}
+ 		lt_iter_finish(iter);
+ 	} else if (lt_strcmp0(argv[1], "lookup") == 0) {
+-		variant = lt_variant_db_lookup(variantdb, argv[2]);
+ 		const lt_list_t *prefix, *l;
++		variant = lt_variant_db_lookup(variantdb, argv[2]);
+ 
+ 		if (variant) {
+ 			printf("desc: %s\n", lt_variant_get_name(variant));
diff --git a/external/liblangtag/liblangtag-0.5.1-undefined-have-sys-param-h.patch b/external/liblangtag/liblangtag-0.5.1-undefined-have-sys-param-h.patch
new file mode 100644
index 000000000000..3cee1458ab7e
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-undefined-have-sys-param-h.patch
@@ -0,0 +1,14 @@
+# liblangtag/lt-macros.h:17:5: error: "HAVE_SYS_PARAM_H" is not defined [-Werror=undef]
+
+diff -ru UnpackedTarball/langtag.orig/liblangtag/lt-macros.h UnpackedTarball/langtag/liblangtag/lt-macros.h
+--- UnpackedTarball/langtag.orig/liblangtag/lt-macros.h	2013-04-30 16:09:19.362392416 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-macros.h	2013-04-30 18:01:13.275188759 +0200
+@@ -14,7 +14,7 @@
+ #error "Only <liblangtag/langtag.h> can be included directly."
+ #endif
+ 
+-#if HAVE_SYS_PARAM_H
++#if defined(HAVE_SYS_PARAM_H) && HAVE_SYS_PARAM_H
+ #include <sys/param.h>
+ #endif
+ 
diff --git a/external/liblangtag/liblangtag-0.5.1-unistd.patch b/external/liblangtag/liblangtag-0.5.1-unistd.patch
new file mode 100644
index 000000000000..0aebe0b09cda
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-unistd.patch
@@ -0,0 +1,12 @@
+--- UnpackedTarball/langtag/liblangtag/lt-utils.c	2013-05-10 14:36:54.445200000 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-utils.c	2013-05-10 14:38:31.446000000 +0200
+@@ -23,7 +23,9 @@
+ #if HAVE_STRING_H
+ #include <string.h>
+ #endif
++#if HAVE_UNISTD_H
+ #include <unistd.h>
++#endif
+ #include <sys/types.h>
+ #include "lt-messages.h"
+ #include "lt-utils.h"
diff --git a/external/liblangtag/liblangtag-0.5.1-vsnprintf.patch b/external/liblangtag/liblangtag-0.5.1-vsnprintf.patch
new file mode 100644
index 000000000000..599c47f9ae52
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-vsnprintf.patch
@@ -0,0 +1,18 @@
+diff -ru UnpackedTarball/orig.langtag/liblangtag/lt-utils.c UnpackedTarball/langtag/liblangtag/lt-utils.c
+--- UnpackedTarball/orig.langtag/liblangtag/lt-utils.c	2013-07-19 16:47:20.310734230 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-utils.c	2013-07-19 16:53:10.839914271 +0200
+@@ -173,9 +173,11 @@
+ 
+ 		va_end(ap);
+ 
+-		retval = malloc(sizeof (char) * size);
+-		if (retval) {
+-			vsprintf(retval, format, args);
++		if (size > 0) {
++			retval = malloc(sizeof (char) * size);
++			if (retval) {
++				vsprintf(retval, format, args);
++			}
+ 		}
+ 	} LT_STMT_END;
+ #elif HAVE_VSNPRINTF
diff --git a/external/liblangtag/liblangtag-0.5.1-windows-do-not-prepend-dir-separator.patch b/external/liblangtag/liblangtag-0.5.1-windows-do-not-prepend-dir-separator.patch
new file mode 100644
index 000000000000..cc0e4abaed59
--- /dev/null
+++ b/external/liblangtag/liblangtag-0.5.1-windows-do-not-prepend-dir-separator.patch
@@ -0,0 +1,16 @@
+diff -ru UnpackedTarball/langtag.orig/liblangtag/lt-string.c UnpackedTarball/langtag/liblangtag/lt-string.c
+--- UnpackedTarball/langtag.orig/liblangtag/lt-string.c	2013-04-22 10:35:07.000000000 +0200
++++ UnpackedTarball/langtag/liblangtag/lt-string.c	2013-04-30 18:34:14.422037274 +0200
+@@ -308,8 +308,12 @@
+ 	lt_return_val_if_fail (string != NULL, NULL);
+ 	lt_return_val_if_fail (path != NULL, string);
+ 
++#ifdef _WIN32
++    /* This simply does not work on Windows with "D:\..." */
++#else
+ 	if (lt_string_length(string) == 0 && path[0] != LT_DIR_SEPARATOR)
+ 		lt_string_append(string, LT_DIR_SEPARATOR_S);
++#endif
+ 
+ 	va_start(ap, path);
+ 	p = path;