package/qemu: needs gcc >= 8

qemu now requires gcc >= 7.5, which was the last release in the 7.x
series. We do not have symbols for a gcc dot-version dependency, nor do
we want to add one.

So, add a dependency on gcc >= 8, for both the host and target variants.

In addition:
  - Add a missing comment in package/qemu/Config.in.host explaining the
    host gcc requirements if host gcc < 8.

Fixes:
    http://autobuild.buildroot.org/results/32b7fee1f8cda2290fd4bd8ac9fe78bacb25b652

Signed-off-by: Adam Duskett <aduskett@gmail.com>
[yann.morin.1998@free.fr:
  - target qemu also impacted
  - propagate to libvirt, gst1-python
  - reword commit log that 7.5 is the last 7.x release
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/gobject-introspection/Config.in

@@ -13,7 +13,7 @@ config BR2_PACKAGE_GOBJECT_INTROSPECTION
 	# compile errors with locale.c. As such, require 4.9 until this
 	# can be verified.
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
-	depends on BR2_HOST_GCC_AT_LEAST_7 # host-qemu
+	depends on BR2_HOST_GCC_AT_LEAST_8 # host-qemu
 	depends on BR2_TOOLCHAIN_USES_GLIBC
 	# gobject-introspection does not require python3 to run on the
 	# target; however, because the tools run in a qemu wrapper, a
@@ -42,9 +42,9 @@ comment "gobject-introspection needs python3"
 	depends on !BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS
 
-comment "gobject-introspection needs a glibc toolchain, gcc >= 4.9, host gcc >= 7"
+comment "gobject-introspection needs a glibc toolchain, gcc >= 4.9, host gcc >= 8"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS
 	depends on !BR2_TOOLCHAIN_USES_GLIBC || \
 		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || \
-		!BR2_HOST_GCC_AT_LEAST_7
+		!BR2_HOST_GCC_AT_LEAST_8

package/gstreamer1/gst1-python/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_GST1_PYTHON
 	bool "gst1-python"
 	depends on BR2_USE_MMU # libglib2, gobject-introspection
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS # gobject-introspection
+	depends on BR2_HOST_GCC_AT_LEAST_8 # gobject-introspection -> host-qemu
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # gobject-introspection
 	depends on BR2_TOOLCHAIN_USES_GLIBC # gobject-introspection
 	depends on BR2_PACKAGE_PYTHON3 # gobject-introspection
@@ -18,8 +19,8 @@ config BR2_PACKAGE_GST1_PYTHON
 comment "gst1-python needs python3"
 	depends on !BR2_PACKAGE_PYTHON3
 
-comment "gst1-python needs a glibc toolchain, gcc >= 4.9"
+comment "gst1-python needs a glibc toolchain, gcc >= 4.9, host gcc >= 8"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS
 	depends on !BR2_TOOLCHAIN_USES_GLIBC || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || !BR2_HOST_GCC_AT_LEAST_8

package/libvirt/Config.in

@@ -65,6 +65,7 @@ config BR2_PACKAGE_LIBVIRT_QEMU
 	bool "qemu"
 	depends on BR2_PACKAGE_LIBSECCOMP_ARCH_SUPPORTS # libseccomp
 	depends on BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_8 # qemu
 	select BR2_PACKAGE_HWDATA         # libpciaccess
 	select BR2_PACKAGE_HWDATA_PCI_IDS # libpciaccess
 	select BR2_PACKAGE_LIBSECCOMP
@@ -74,6 +75,11 @@ config BR2_PACKAGE_LIBVIRT_QEMU
 	help
 	  QEMU/KVM support
 
+comment "qemu needs a toolchain with gcc >= 8"
+	depends on BR2_PACKAGE_LIBSECCOMP_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
+	depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
+
 config BR2_PACKAGE_LIBVIRT_LXC
 	bool "lxc"
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 # lxc

package/nodejs/Config.in

@@ -8,18 +8,18 @@ config BR2_PACKAGE_NODEJS_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
 
-comment "nodejs needs a toolchain w/ C++, dynamic library, NPTL, gcc >= 7, wchar"
+comment "nodejs needs a toolchain w/ C++, dynamic library, NPTL, gcc >= 7, wchar, host gcc >= 8"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_NODEJS_ARCH_SUPPORTS
 	depends on !BR2_INSTALL_LIBSTDCPP || BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
-		!BR2_HOST_GCC_AT_LEAST_7 || !BR2_TOOLCHAIN_GCC_AT_LEAST_7 || !BR2_USE_WCHAR
+		!BR2_HOST_GCC_AT_LEAST_8 || !BR2_TOOLCHAIN_GCC_AT_LEAST_7 || !BR2_USE_WCHAR
 
 config BR2_PACKAGE_NODEJS
 	bool "nodejs"
 	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL # libuv
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_PACKAGE_NODEJS_ARCH_SUPPORTS
-	depends on BR2_HOST_GCC_AT_LEAST_7
+	depends on BR2_HOST_GCC_AT_LEAST_8 # qemu
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_7
 	depends on BR2_USE_WCHAR
 	# uses fork()

package/python-bluezero/Config.in

@@ -2,7 +2,7 @@ config BR2_PACKAGE_PYTHON_BLUEZERO
 	bool "python-bluezero"
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS # python-gobject -> gobject-introspection
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # python-gobject -> gobject-introspection
-	depends on BR2_HOST_GCC_AT_LEAST_7 # python-gobject -> gobject-introspection -> host-qemu
+	depends on BR2_HOST_GCC_AT_LEAST_8 # python-gobject -> gobject-introspection -> host-qemu
 	depends on BR2_TOOLCHAIN_USES_GLIBC # python-gobject -> gobject-introspection
 	depends on BR2_PACKAGE_PYTHON3
 	select BR2_PACKAGE_DBUS # runtime
@@ -13,9 +13,9 @@ config BR2_PACKAGE_PYTHON_BLUEZERO
 
 	  https://github.com/ukBaz/python-bluezero
 
-comment "python-bluezero needs a glibc toolchain, gcc >= 4.9, host gcc >= 7"
+comment "python-bluezero needs a glibc toolchain, gcc >= 4.9, host gcc >= 8"
 	depends on BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS
 	depends on !BR2_TOOLCHAIN_USES_GLIBC || \
 		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || \
-		!BR2_HOST_GCC_AT_LEAST_7
+		!BR2_HOST_GCC_AT_LEAST_8

package/python-gobject/Config.in

@@ -3,7 +3,7 @@ config BR2_PACKAGE_PYTHON_GOBJECT
 	depends on BR2_USE_MMU # libglib2, gobject-introspection
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS # gobject-introspection
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # gobject-introspection
-	depends on BR2_HOST_GCC_AT_LEAST_7 # gobject-introspection -> host-qemu
+	depends on BR2_HOST_GCC_AT_LEAST_8 # gobject-introspection -> host-qemu
 	depends on BR2_TOOLCHAIN_USES_GLIBC # gobject-introspection
 	depends on BR2_PACKAGE_PYTHON3 # gobject-introspection
 	select BR2_PACKAGE_GOBJECT_INTROSPECTION
@@ -13,9 +13,9 @@ config BR2_PACKAGE_PYTHON_GOBJECT
 
 	  https://wiki.gnome.org/action/show/Projects/PyGObject
 
-comment "python-gobject needs a glibc toolchain, gcc >= 4.9, host gcc >= 7"
+comment "python-gobject needs a glibc toolchain, gcc >= 4.9, host gcc >= 8"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_GOBJECT_INTROSPECTION_ARCH_SUPPORTS
 	depends on !BR2_TOOLCHAIN_USES_GLIBC || \
 		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || \
-		!BR2_HOST_GCC_AT_LEAST_7
+		!BR2_HOST_GCC_AT_LEAST_8

package/qemu/Config.in

@@ -5,16 +5,16 @@ config BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
 		|| BR2_x86_64 || BR2_arm \
 		|| BR2_powerpc64 || BR2_powerpc64le
 
-comment "QEMU requires a toolchain with wchar, threads, gcc >= 7"
+comment "QEMU requires a toolchain with wchar, threads, gcc >= 8"
 	depends on BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
 	depends on BR2_USE_MMU
 	depends on !(BR2_TOOLCHAIN_HAS_THREADS && BR2_USE_WCHAR) || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_7
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_8
 
 config BR2_PACKAGE_QEMU
 	bool "QEMU"
 	depends on BR2_PACKAGE_QEMU_ARCH_SUPPORTS_TARGET
-	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_7
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_8
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on BR2_USE_WCHAR # gettext
 	depends on BR2_USE_MMU # fork()

package/qemu/Config.in.host

@@ -37,7 +37,7 @@ config BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
 config BR2_PACKAGE_HOST_QEMU
 	bool "host qemu"
 	depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS || BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
-	depends on BR2_HOST_GCC_AT_LEAST_7
+	depends on BR2_HOST_GCC_AT_LEAST_8
 	select BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE \
 		if !BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE && BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
 	select BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE \
@@ -50,6 +50,11 @@ config BR2_PACKAGE_HOST_QEMU
 
 	  http://www.qemu.org
 
+comment "host-qemu needs a host gcc >= 8"
+	depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS || \
+		BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORT
+	depends on !BR2_HOST_GCC_AT_LEAST_8
+
 if BR2_PACKAGE_HOST_QEMU
 
 comment "Emulators selection"