libupnpp: update to use the gcc version dependency mechanism

This commit changes the libupnp Config.in to use the gcc version
dependency mechanism. The only reverse dependency of libupnpp is
upmpdcli, which has already been updated, and requires >= 4.6, while
libupnpp only requires >= 4.5.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

package/libupnpp/Config.in

@@ -5,9 +5,7 @@ config BR2_PACKAGE_LIBUPNPP
 	select BR2_PACKAGE_LIBUPNP
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libupnp
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2014R1 # Too old gcc
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2013R1 # Ditto
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R2 # Ditto
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 	# Triggers the _gp link issue
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405
@@ -17,10 +15,7 @@ config BR2_PACKAGE_LIBUPNPP
 
 	  http://www.lesbonscomptes.com/upmpdcli/
 
-comment "libupnpp needs a toolchain w/ C++, threads"
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2014R1 # Too old gcc
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2013R1 # Ditto
-	depends on !BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2012R2 # Ditto
+comment "libupnpp needs a toolchain w/ C++, threads, gcc >= 4.5"
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201305
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII201405
-	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_5