package/libgtk2: needs gcc >= 4.8

Due to the harfbuzz bump to version 2.5.2 we need gcc >= 4.8.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libgtk2/Config.in

@@ -6,6 +6,7 @@ config BR2_PACKAGE_LIBGTK2
 	depends on BR2_USE_MMU # glib2
 	depends on BR2_INSTALL_LIBSTDCPP # pango
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # pango -> harfbuzz
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # pango -> harfbuzz
 	select BR2_PACKAGE_ATK
 	select BR2_PACKAGE_CAIRO
 	select BR2_PACKAGE_CAIRO_PS
@@ -33,9 +34,10 @@ config BR2_PACKAGE_LIBGTK2_DEMO
 
 endif
 
-comment "libgtk2 needs a toolchain w/ wchar, threads, C++"
+comment "libgtk2 needs a toolchain w/ wchar, threads, C++, gcc >= 4.8"
 	depends on BR2_USE_MMU
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on BR2_PACKAGE_XORG7
 	depends on !BR2_USE_WCHAR || !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 || \
 		!BR2_TOOLCHAIN_HAS_THREADS