package/gdb: switch to 8.0 as the default version

8.1 is around, 8.0 has already seen a point release, so it's time to
make 8.0 the default version for gdb.

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gdb/Config.in.host

@@ -45,7 +45,7 @@ config BR2_PACKAGE_HOST_GDB_SIM
 
 choice
 	prompt "GDB debugger Version"
-	default BR2_GDB_VERSION_7_11
+	default BR2_GDB_VERSION_8_0
 	depends on !BR2_arc
 	help
 	  Select the version of gdb you wish to use.
@@ -75,14 +75,17 @@ endif
 
 # Tells whether the currently selected gdb version requires C++11
 # support in the toolchain. When host-gdb is not enabled, the target
-# gdb built is 7.11, which doesn't require C++11 support. So it's only
-# if host-gdb is built, with the version set to 8.0 or 8.1 that C++11
-# support is needed in the toolchain to build gdb for the target.
+# gdb built is 8.0, which requires C++11 support, which is why
+# BR2_PACKAGE_GDB_NEEDS_CXX11 is 'y' when BR2_PACKAGE_HOST_GDB is not
+# enabled. When host-gdb is built, with the version set to 8.0 or 8.1
+# then C++11 support is needed in the toolchain to build gdb for the
+# target.
 #
 # Even though this option is related to target gdb dependencies, we
 # keep it next to the BR2_GDB_VERSION so that they are kept in sync.
 config BR2_PACKAGE_GDB_NEEDS_CXX11
 	bool
+	default y if !BR2_PACKAGE_HOST_GDB
 	default y if BR2_GDB_VERSION_8_0
 	default y if BR2_GDB_VERSION_8_1
 
@@ -91,8 +94,8 @@ config BR2_GDB_VERSION
 	string
 	default "arc-2018.03-rc2-gdb" if BR2_arc
 	default "7.10.1"   if BR2_GDB_VERSION_7_10
-	default "7.11.1"   if BR2_GDB_VERSION_7_11 || !BR2_PACKAGE_HOST_GDB
+	default "7.11.1"   if BR2_GDB_VERSION_7_11
 	default "7.12.1"   if BR2_GDB_VERSION_7_12
-	default "8.0.1"    if BR2_GDB_VERSION_8_0
+	default "8.0.1"    if BR2_GDB_VERSION_8_0 || !BR2_PACKAGE_HOST_GDB
 	default "8.1"      if BR2_GDB_VERSION_8_1
 	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_HOST_GDB