apitrace: needs gcc 4.6 or later

Fixes:
http://autobuild.buildroot.net/results/4a1/4a183b05b44833ee2f253749c39257b31db963ac/
http://autobuild.buildroot.net/results/a9c/a9c4ed838fae31cb680ff5e19bf03dd7e2f85094/
http://autobuild.buildroot.net/results/026/026eecffd262b0be6675001ee2f5a635207e55c7/

and more.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/apitrace/Config.in

@@ -1,11 +1,13 @@
-comment "apitrace needs a (e)glibc toolchain w/ C++"
+comment "apitrace needs a (e)glibc toolchain w/ C++, gcc >= 4.6"
 	depends on BR2_PACKAGE_XORG7
-	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_USES_GLIBC
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_USES_GLIBC \
+		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 
 config BR2_PACKAGE_APITRACE
 	bool "apitrace"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_USES_GLIBC # uses glibc specific __libc_dlsym
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 	depends on BR2_PACKAGE_XORG7
 	select BR2_PACKAGE_XLIB_LIBX11
 	help