[buildroot] hide C++ standard library selection behind INSTALL_LIBSTDCPP

If our toolchain is not configured to support C++, it is pointless choosing
a particular C++ standard library implementation.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33907 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/Config.in b/Config.in
index cca5a4c..46f7ce8 100644 (file)
--- a/Config.in
+++ b/Config.in
@@ -549,20 +549,21 @@ 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++"
+       if INSTALL_LIBSTDCPP
+               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_LIBSTDCXX
-                       bool "libstdc++"
+                       config USE_UCLIBCXX
+                               bool "uClibc++"
 
-       endchoice
+                       config USE_LIBSTDCXX
+                               bool "libstdc++"
+               endchoice
+       endif
 
 endmenu