Patched libsigc++-2.2.7 which now allows it to build, untested though.

dev-libs/libsigc++/libsigc++-2.2.7.bep

@@ -1,9 +1,9 @@
-DESCRIPTION="libsigc++" 
+DESCRIPTION="libsigc++ is a typesafe callback system for standard C++" 
 HOMEPAGE="http://libsigc.sourceforge.net/stable.shtml" 
 SRC_URI="http://ftp.gnome.org/pub/GNOME/sources/libsigc++/2.2/libsigc++-2.2.7.tar.gz"
 REVISION="1"
-STATUS_HAIKU="broken"
-DEPEND=""
+STATUS_HAIKU="untested"
+DEPEND="dev-cpp/mm-common >= 0.9.2"
 CHECKSUM_MD5="48afe53ba0e3958f6ac5f072afed1c53"
 BUILD {
 	cd libsigc++-2.2.7
@@ -20,4 +20,4 @@ INSTALL {
 }
 
 LICENSE="GNU LGPL v2.1"
-COPYRIGHT="2002, 2003, 2005 The libsigc++ Development Team"
+COPYRIGHT="2002, 2003, 2005 The libsigc++ Development Team"

dev-libs/libsigc++/patches/libsigc++-2.2.7.patch

@@ -0,0 +1,45 @@
+diff -urN libsigc++-2.2.7/Makefile.am libsigc++-2.2.7-haiku/Makefile.am
+--- libsigc++-2.2.7/Makefile.am	2009-09-02 19:37:49.029360128 +0000
++++ libsigc++-2.2.7-haiku/Makefile.am	2010-05-29 17:20:38.000000000 +0000
+@@ -22,7 +22,7 @@
+ else
+ doc_subdirs =
+ endif
+-SUBDIRS = sigc++ tests examples $(doc_subdirs)
++SUBDIRS = sigc++ $(doc_subdirs)
+ 
+ sigc_configdir = $(libdir)/$(SIGCXX_MODULE_NAME)/include
+ nodist_sigc_config_HEADERS = sigc++config.h
+diff -urN libsigc++-2.2.7/Makefile.in libsigc++-2.2.7-haiku/Makefile.in
+--- libsigc++-2.2.7/Makefile.in	2010-05-04 19:44:19.045875200 +0000
++++ libsigc++-2.2.7-haiku/Makefile.in	2010-05-29 17:20:43.000000000 +0000
+@@ -114,7 +114,7 @@
+ 	distdir dist dist-all distcheck
+ ETAGS = etags
+ CTAGS = ctags
+-DIST_SUBDIRS = sigc++ tests examples docs
++DIST_SUBDIRS = sigc++ docs
+ DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+ distdir = $(PACKAGE)-$(VERSION)
+ top_distdir = $(distdir)
+@@ -291,7 +291,7 @@
+ ACLOCAL_AMFLAGS = -I build ${ACLOCAL_FLAGS}
+ @ENABLE_DOCUMENTATION_FALSE@doc_subdirs = 
+ @ENABLE_DOCUMENTATION_TRUE@doc_subdirs = docs
+-SUBDIRS = sigc++ tests examples $(doc_subdirs)
++SUBDIRS = sigc++ $(doc_subdirs)
+ sigc_configdir = $(libdir)/$(SIGCXX_MODULE_NAME)/include
+ nodist_sigc_config_HEADERS = sigc++config.h
+ pkgconfigdir = $(libdir)/pkgconfig
+diff -urN libsigc++-2.2.7/configure.ac libsigc++-2.2.7-haiku/configure.ac
+--- libsigc++-2.2.7/configure.ac	2010-05-04 19:41:29.054788096 +0000
++++ libsigc++-2.2.7-haiku/configure.ac	2010-05-29 17:19:57.000000000 +0000
+@@ -66,8 +66,6 @@
+                  ${SIGCXX_MODULE_NAME}.pc:sigc++.pc.in
+                  ${SIGCXX_MODULE_NAME}-uninstalled.pc:sigc++-uninstalled.pc.in
+                  sigc++/Makefile
+-                 examples/Makefile
+-                 tests/Makefile
+                  docs/Makefile
+                  docs/reference/Doxyfile
+                  MSVC_Net2005/sigc.rc