build: add a config option for choosing the prefered standard c++ library and add uclibc++.mk to make this easy to handle in packages

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32369 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 15 insertions, 0 deletions

diff --git a/Config.in b/Config.in
index ddf02614b..5f61905c9 100644
--- a/Config.in
+++ b/Config.in
@@ -395,6 +395,21 @@ menu "Global build settings"
 		  Note that this will make the system libraries incompatible with most of the packages
 		  that are not selected during the build process
 
+	choice
+		prompt "Preferred standard C++ library"
+		default USE_LIBSTDCXX if USE_EGLIBC
+		default USE_UCLIBCXX
+		help
+		  Select the preferred standard C++ library for all packages that support this.
+
+		config USE_UCLIBCXX
+			bool "uClibc++"
+
+		config USE_LIBSTDCXX
+			bool "libstdc++"
+
+	endchoice
+
 endmenu
 
 menuconfig DEVEL