diff -ur libsoup-2.52.2/configure.ac libsoup-2.52.2.new/configure.ac
--- libsoup-2.52.2/configure.ac	2015-11-09 21:23:00.000000000 +0100
+++ libsoup-2.52.2.new/configure.ac	2015-11-17 10:32:25.562815235 +0100
@@ -77,23 +77,28 @@
 dnl ***********************
 dnl *** Checks for glib ***
 dnl ***********************
-
-GLIB_REQUIRED=2.38.0
-AM_PATH_GLIB_2_0($GLIB_REQUIRED,,,gobject gio)
-if test "$GLIB_LIBS" = ""; then
-   AC_MSG_ERROR(GLIB $GLIB_REQUIRED or later is required to build libsoup)
+PKG_PROG_PKG_CONFIG
+enable_ssl=no
+AC_ARG_WITH(libsoup-system,
+   AS_HELP_STRING([--with-libsoup-system], [Use libsoup system library to build(default=no)]),
+   [with_libsoup_system=$withval], [with_libsoup_system=no])
+if test "$with_libsoup_system" = "no"; then
+    GLIB_REQUIRED=2.38.0
+    AM_PATH_GLIB_2_0($GLIB_REQUIRED,,,gobject gio)
+    if test "$GLIB_LIBS" = ""; then
+    AC_MSG_ERROR(GLIB $GLIB_REQUIRED or later is required to build libsoup)
+    fi
+    GLIB_CFLAGS="$GLIB_CFLAGS -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_38"
+    GLIB_MAKEFILE='$(top_srcdir)/Makefile.glib'
+    AC_SUBST(GLIB_MAKEFILE)
+    PKG_CHECK_MODULES(XML, libxml-2.0)
+    AC_SUBST(XML_CFLAGS)
+    AC_SUBST(XML_LIBS)
 fi
-GLIB_CFLAGS="$GLIB_CFLAGS -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_38"
-
-GLIB_MAKEFILE='$(top_srcdir)/Makefile.glib'
-AC_SUBST(GLIB_MAKEFILE)
+AM_CONDITIONAL(BUILD_LIBSOUP, test $with_libsoup_system = no)
 
 GLIB_TESTS
 
-PKG_CHECK_MODULES(XML, libxml-2.0)
-AC_SUBST(XML_CFLAGS)
-AC_SUBST(XML_LIBS)
-
 PKG_CHECK_MODULES(SQLITE, sqlite3)
 AC_SUBST(SQLITE_CFLAGS)
 AC_SUBST(SQLITE_LIBS)
@@ -148,6 +153,9 @@
 
 if test $with_gnome != no; then
 	AC_DEFINE(HAVE_GNOME, 1, [Defined if GNOME support is enabled])
+	if test $with_libsoup_system != no; then
+		PKG_CHECK_MODULES(LIBSOUP, libsoup-$SOUP_API_VERSION = $VERSION)
+	fi
 fi
 AC_SUBST(HAVE_GNOME)
 
Sólo en libsoup-2.52.2.new/: configure.ac~
diff -ur libsoup-2.52.2/libsoup/Makefile.am libsoup-2.52.2.new/libsoup/Makefile.am
--- libsoup-2.52.2/libsoup/Makefile.am	2015-11-09 21:21:48.000000000 +0100
+++ libsoup-2.52.2.new/libsoup/Makefile.am	2015-11-19 12:11:19.743369476 +0100
@@ -3,14 +3,19 @@
 EXTRA_DIST =
 CLEANFILES =
 
-
+BUILT_SOURCES =
 include $(GLIB_MAKEFILE)
 
 if OS_WIN32
 LIBWS2_32 = -lws2_32
 endif
 
-AM_CPPFLAGS = 				\
+AM_CPPFLAGS =
+lib_LTLIBRARIES =
+CLEANFILES =
+
+if BUILD_LIBSOUP
+AM_CPPFLAGS +=                          \
 	-DG_LOG_DOMAIN=\"libsoup\" 	\
 	-DLIBSOUP_COMPILATION		\
 	-DLOCALEDIR=\"$(localedir)\"	\
@@ -84,7 +89,7 @@
 nodist_libsoupinclude_HEADERS =	\
 	soup-version.h
 
-lib_LTLIBRARIES = libsoup-2.4.la
+lib_LTLIBRARIES += libsoup-2.4.la
 
 libsoup_2_4_la_LDFLAGS =	\
 	-version-info $(SOUP_CURRENT):$(SOUP_REVISION):$(SOUP_AGE) \
@@ -202,18 +207,23 @@
 	soup-xmlrpc.c			\
 	soup-xmlrpc-old.c
 
-# TLD rules
-EXTRA_DIST += tld-parser.py
-
+BUILT_SOURCES += tld_data.inc
 TLD_DATA_FILE=$(top_srcdir)/data/effective_tld_names.dat
 
 tld_data.inc: tld-parser.py $(TLD_DATA_FILE)
-	$(srcdir)/tld-parser.py $(TLD_DATA_FILE) tld_data.inc
+	$(AM_V_GEN) python $(srcdir)/tld-parser.py $(TLD_DATA_FILE) tld_data.inc
+
+# TLD rules
+EXTRA_DIST += tld-parser.py
+
+endif
 
 if BUILD_LIBSOUP_GNOME
 
 libsoupgnomeincludedir = $(includedir)/libsoup-gnome-2.4/libsoup
 
+AM_CPPFLAGS += $(LIBSOUP_CFLAGS)
+
 libsoupgnomeinclude_HEADERS =	\
 	soup-cookie-jar-sqlite.h\
 	soup-gnome.h		\
@@ -221,17 +231,26 @@
 
 lib_LTLIBRARIES += libsoup-gnome-2.4.la
 
+if BUILD_LIBSOUP
+libsoup_gnome_2_4_la_LDFLAGS = $(libsoup_2_4_la_LDFLAGS)
+else
 libsoup_gnome_2_4_la_LDFLAGS =	\
 	-version-info $(SOUP_CURRENT):$(SOUP_REVISION):$(SOUP_AGE) \
 	-no-undefined \
 	-export-symbols $(srcdir)/libsoup-gnome-2.4.sym
+endif
 
 EXTRA_DIST += libsoup-gnome-2.4.sym
 
 libsoup_gnome_2_4_la_LIBADD =		\
-	libsoup-2.4.la			\
 	$(GLIB_LIBS)
 
+if BUILD_LIBSOUP
+libsoup_gnome_2_4_la_LIBADD += libsoup-2.4.la
+else
+libsoup_gnome_2_4_la_LIBADD += $(LIBSOUP_LIBS)
+endif
+
 libsoup_gnome_2_4_la_SOURCES =		\
 	soup-cookie-jar-sqlite.c	\
 	soup-gnome-features.c		\
@@ -243,9 +262,8 @@
 endif
 
 GLIB_GENERATED = soup-enum-types.c soup-enum-types.h
-BUILT_SOURCES = \
-	$(GLIB_GENERATED)   \
-	tld_data.inc
+BUILT_SOURCES += \
+       $(GLIB_GENERATED)
 
 soup_enum_types_sources = $(libsoupinclude_HEADERS) $(libsoupgnomeinclude_HEADERS)
 soup_enum_types_MKENUMS_C_FLAGS = --fhead "\#define LIBSOUP_USE_UNSTABLE_REQUEST_API"
@@ -260,6 +278,8 @@
 
 if HAVE_INTROSPECTION
 
+if BUILD_LIBSOUP
+
 # Core library
 gi_soup_files = \
 	$(filter-out soup.h soup-enum-types.% soup-proxy-resolver.h,\
@@ -292,20 +312,28 @@
 
 EXTRA_DIST += Soup-2.4.metadata Soup-2.4-custom.vala libsoup-2.4.deps
 
+endif
+
 if BUILD_LIBSOUP_GNOME
 
+if BUILD_LIBSOUP
+SOUP_GIR = Soup-2.4.gir
+else
+SOUP_GIR =
+endif
+
 # GNOME extensions
 gi_soup_gnome_files = $(filter-out soup-gnome.h,\
 		          $(libsoupgnomeinclude_HEADERS) \
 	                  $(filter-out %.h, $(libsoup_gnome_2_4_la_SOURCES)))
-SoupGNOME-2.4.gir: libsoup-gnome-2.4.la Soup-2.4.gir
+SoupGNOME-2.4.gir: libsoup-gnome-2.4.la $(SOUP_GIR)
+SoupGNOME_2_4_gir_INCLUDES = Soup-2.4
 SoupGNOME_2_4_gir_SCANNERFLAGS =			\
 	--identifier-prefix=Soup			\
 	--symbol-prefix=soup				\
-	--c-include "libsoup/soup-gnome.h"		\
-	--include-uninstalled=$(builddir)/Soup-2.4.gir
+	--c-include "libsoup/soup-gnome.h"
 SoupGNOME_2_4_gir_CFLAGS = $(AM_CPPFLAGS)
-SoupGNOME_2_4_gir_LIBS = libsoup-gnome-2.4.la libsoup-2.4.la
+SoupGNOME_2_4_gir_LIBS = libsoup-gnome-2.4.la
 SoupGNOME_2_4_gir_FILES = $(addprefix $(srcdir)/,$(gi_soup_gnome_files))
 SoupGNOME_2_4_gir_EXPORT_PACKAGES = libsoup-gnome-2.4
 
@@ -319,12 +347,13 @@
 typelibdir = $(libdir)/girepository-1.0
 typelib_DATA = $(INTROSPECTION_GIRS:.gir=.typelib)
 
-CLEANFILES+= $(gir_DATA) $(typelib_DATA) $(BUILT_SOURCES)
+CLEANFILES += $(gir_DATA) $(typelib_DATA) $(BUILT_SOURCES)
 
 endif
 
 # We only do this check on Linux, so we don't have to worry about
 # different "nm" output on other platforms
+if BUILD_LIBSOUP
 if OS_LINUX
 check-local:
 	@echo Checking libsoup-2.4.so symbols
@@ -334,3 +363,16 @@
 		env LC_ALL=C sort -u | \
 		diff -U0 $(srcdir)/libsoup-2.4.sym - >&2
 endif
+endif
+
+if BUILD_LIBSOUP_GNOME
+if OS_LINUX
+check-local:
+	@echo Checking libsoup-gnome-2.4.so symbols
+	@nm $(builddir)/.libs/libsoup-gnome-2.4.so | \
+		grep "^[[:xdigit:]]\+ [BTR] " | \
+		sed "s/^[[:xdigit:]]\+ [BTR] //" | \
+		env LANG=C sort -u | \
+		diff -U0 $(srcdir)/libsoup-gnome-2.4.sym - >&2
+endif
+endif
Sólo en libsoup-2.52.2.new/libsoup: Makefile.am~
diff -ur libsoup-2.52.2/Makefile.am libsoup-2.52.2.new/Makefile.am
--- libsoup-2.52.2/Makefile.am	2015-10-29 16:08:21.000000000 +0100
+++ libsoup-2.52.2.new/Makefile.am	2015-11-17 10:25:54.034816211 +0100
@@ -1,7 +1,11 @@
 ## Process this file with automake to produce Makefile.in
 ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 
-SUBDIRS = libsoup po tests examples docs
+SUBDIRS = libsoup
+
+if BUILD_LIBSOUP
+SUBDIRS += po tests docs
+endif
 
 EXTRA_DIST =				\
 	data/effective_tld_names.dat	\
@@ -18,7 +22,11 @@
 
 pkgconfigdir = $(libdir)/pkgconfig
 
-pkgconfig_DATA = libsoup-2.4.pc
+pkgconfig_DATA = 
+
+if BUILD_LIBSOUP
+pkgconfig_DATA += libsoup-2.4.pc
+endif
 
 if BUILD_LIBSOUP_GNOME
 pkgconfig_DATA += libsoup-gnome-2.4.pc
Sólo en libsoup-2.52.2.new/: Makefile.am~