package/gcc: add license information

This commit adds the licensing information for the host-gcc-initial,
host-gcc-final and gcc-final packages.

For host-gcc-initial and host-gcc-final, instead of duplicating the
information, we use common variables coming from gcc.mk.

Of course for the target gcc-final, we use a different license than
for host-gcc-final, as it's the whole point of this series: be able to
describe that the target side of gcc is GPL-3.0 with linking
exception.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Romain Naour <romain.naour@smile.fr>

package/gcc/gcc-final/gcc-final.mk

@@ -7,6 +7,10 @@
 GCC_FINAL_VERSION = $(GCC_VERSION)
 GCC_FINAL_SITE = $(GCC_SITE)
 GCC_FINAL_SOURCE = $(GCC_SOURCE)
+GCC_FINAL_LICENSE = GPL-3.0-with-GCC-exception
+GCC_FINAL_LICENSE_FILES = COPYING.RUNTIME
+HOST_GCC_FINAL_LICENSE = $(HOST_GCC_LICENSE)
+HOST_GCC_FINAL_LICENSE_FILES = $(HOST_GCC_LICENSE_FILES)
 
 GCC_FINAL_DEPENDENCIES = host-gcc-final
 GCC_FINAL_ADD_TOOLCHAIN_DEPENDENCY = NO

package/gcc/gcc-initial/gcc-initial.mk

@@ -7,6 +7,8 @@
 GCC_INITIAL_VERSION = $(GCC_VERSION)
 GCC_INITIAL_SITE = $(GCC_SITE)
 GCC_INITIAL_SOURCE = $(GCC_SOURCE)
+HOST_GCC_INITIAL_LICENSE = $(HOST_GCC_LICENSE)
+HOST_GCC_INITIAL_LICENSE_FILES = $(HOST_GCC_LICENSE_FILES)
 
 # We do not have a 'gcc' package per-se; we only have two incarnations,
 # gcc-initial and gcc-final. gcc-initial is just an internal step that

package/gcc/gcc.hash

@@ -13,3 +13,10 @@ sha512  d99e4826a70db04504467e349e9fbaedaa5870766cda7c5cab50cdebedc4be755ebca5b7
 sha512  b0853e2b1c5998044392023fa653e399e74118c46e616504ac59e1a2cf27620f94434767ce06b6cf4ca3dfb57f81d6eda92752befaf095ea5e564a9181b4659c  gcc-arc-2020.09-release.tar.gz
 # Locally calculated (fetched from Github)
 sha512  2de7cf47333a4092b02d3bb98f4206f14966f1d139a724d09cf3b22f8a43ae0c704f33e6477d6367a03c29b265480dc900169e9d417006c5d46f0ae446b8c6f1  gcc-or1k-musl-5.4.0-20170218.tar.gz
+
+# Locally calculated
+sha256  231f7edcc7352d7734a96eef0b8030f77982678c516876fcb81e25b32d68564c  COPYING
+sha256  8ceb4b9ee5adedde47b31e975c1d90c73ad27b6b165a1dcd80c7c545eb65b903  COPYING3
+sha256  a853c2ffec17057872340eee242ae4d96cbf2b520ae27d903e1b2fef1a5f9d1c  COPYING3.LIB
+sha256  a9bdde5616ecdd1e980b44f360600ee8783b1f99b8cc83a2beb163a0a390e861  COPYING.LIB
+sha256  9d6b43ce4d8de0c878bf16b54d8e7a10d9bd42b75178153e3af6a815bdc90f74  COPYING.RUNTIME

package/gcc/gcc.mk

@@ -18,6 +18,9 @@ GCC_SITE = $(BR2_GNU_MIRROR:/=)/gcc/gcc-$(GCC_VERSION)
 GCC_SOURCE = gcc-$(GCC_VERSION).tar.xz
 endif
 
+HOST_GCC_LICENSE = GPL-2.0, GPL-3.0, LGPL-2.1, LGPL-3.0
+HOST_GCC_LICENSE_FILES = COPYING COPYING3 COPYING.LIB COPYING3.LIB
+
 #
 # Xtensa special hook
 #