package/capnproto: require GCC 5 for C++14

Adds dependency on at least GCC 5 to have C++14 language features that
are required starting in version 0.7.0 of capnproto.

Fixes:
http://autobuild.buildroot.org/results/5c09e745cab822d830f73e33647f3b0e765c9181
(capnproto build failure)

Fixes:
http://autobuild.buildroot.org/results/743c750e9932658c20965a25de89c3f21a1d43e9
(host-capnproto build failure)

This updated dependency is propagated to capnproto unique reverse
dependency, c-capnproto.

Signed-off-by: Koen Martens <gmc@sonologic.nl>
Signed-off-by: Joel Carlson <JoelsonCarl@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/c-capnproto/Config.in

@@ -1,8 +1,8 @@
 config BR2_PACKAGE_C_CAPNPROTO
 	bool "c-capnproto"
 	depends on BR2_USE_MMU # capnproto
-	depends on BR2_HOST_GCC_AT_LEAST_4_8 # capnproto
-	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # capnproto
+	depends on BR2_HOST_GCC_AT_LEAST_5 # capnproto
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5 # capnproto
 	depends on BR2_INSTALL_LIBSTDCPP # capnproto
 	depends on BR2_TOOLCHAIN_HAS_THREADS # capnproto
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC # capnproto
@@ -12,10 +12,10 @@ config BR2_PACKAGE_C_CAPNPROTO
 	  plugin for C. Requires regular Cap'n Proto and only
 	  provides serialization (no RPC).
 
-comment "c-capnproto needs host and target gcc >= 4.8 w/ C++, threads, atomic"
+comment "c-capnproto needs host and target gcc >= 5 w/ C++14, threads, atomic"
 	depends on BR2_USE_MMU
-	depends on!BR2_HOST_GCC_AT_LEAST_4_8 || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 || \
+	depends on!BR2_HOST_GCC_AT_LEAST_5 || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_5 || \
 		!BR2_INSTALL_LIBSTDCPP || \
 		!BR2_TOOLCHAIN_HAS_THREADS || \
 		!BR2_TOOLCHAIN_HAS_ATOMIC

package/capnproto/Config.in

@@ -1,8 +1,8 @@
 config BR2_PACKAGE_CAPNPROTO
 	bool "capnproto"
 	depends on BR2_USE_MMU
-	depends on BR2_HOST_GCC_AT_LEAST_4_8 # C++11
-	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # C++11
+	depends on BR2_HOST_GCC_AT_LEAST_5 # C++14
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5 # C++14
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC
@@ -15,10 +15,10 @@ config BR2_PACKAGE_CAPNPROTO
 
 	  https://capnproto.org/index.html
 
-comment "capnproto needs host and target gcc >= 4.8 w/ C++, threads, atomic"
+comment "capnproto needs host and target gcc >= 5 w/ C++14, threads, atomic"
 	depends on BR2_USE_MMU
-	depends on !BR2_HOST_GCC_AT_LEAST_4_8 || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 || \
+	depends on !BR2_HOST_GCC_AT_LEAST_5 || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_5 || \
 		!BR2_INSTALL_LIBSTDCPP || \
 		!BR2_TOOLCHAIN_HAS_THREADS || \
 		!BR2_TOOLCHAIN_HAS_ATOMIC