package/glibc: introduce and use BR2_PACKAGE_GLIBC_ARCH_SUPPORTS and BR2_PACKAGE_GLIBC_SUPPORTS

As part of this, the dependency of the comment "glibc needs a
toolchain w/ dynamic library, kernel headers >= 3.2" is changed to use
BR2_PACKAGE_GLIBC_ARCH_SUPPORTS instead of just BR2_USE_MMU, so that
the comment only appears on architectures for which glibc is supported

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/glibc/Config.in

@@ -1,3 +1,41 @@
+config BR2_PACKAGE_GLIBC_ARCH_SUPPORTS
+	bool
+	default y if BR2_arm
+	default y if BR2_armeb
+	default y if BR2_aarch64
+	default y if BR2_aarch64_be
+	default y if BR2_i386
+	default y if BR2_mips
+	default y if BR2_mipsel
+	default y if BR2_mips64
+	default y if BR2_mips64el
+	default y if BR2_or1k
+	default y if BR2_powerpc
+	default y if BR2_powerpc64
+	default y if BR2_powerpc_power8
+	default y if BR2_riscv
+	default y if BR2_s390x
+	default y if BR2_sh
+	default y if BR2_sparc64
+	default y if BR2_x86_64
+	default y if BR2_microblaze
+	default y if BR2_nios2
+	default y if BR2_arc && BR2_ARC_ATOMIC_EXT
+	default y if BR2_csky
+	depends on !BR2_powerpc_SPE
+	depends on BR2_RISCV_ISA_RVA || !BR2_riscv
+	depends on BR2_USE_MMU
+
+config BR2_PACKAGE_GLIBC_SUPPORTS
+	bool
+	default y if BR2_PACKAGE_GLIBC_ARCH_SUPPORTS
+	depends on !BR2_STATIC_LIBS
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 || !BR2_powerpc64le
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 || !BR2_MIPS_NAN_2008
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0 || !BR2_RISCV_64
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 || !BR2_arc
+
 if BR2_TOOLCHAIN_BUILDROOT_GLIBC
 
 comment "Glibc Options"

toolchain/toolchain-buildroot/Config.in

@@ -43,23 +43,7 @@ config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
 
 config BR2_TOOLCHAIN_BUILDROOT_GLIBC
 	bool "glibc"
-	depends on BR2_arm         || BR2_armeb      || BR2_aarch64 || \
-		   BR2_aarch64_be  || BR2_i386       || BR2_mips    || \
-		   BR2_mipsel      || BR2_mips64     || BR2_mips64el|| \
-		   BR2_powerpc     || BR2_powerpc64  || BR2_powerpc_power8 || \
-		   BR2_riscv       || BR2_s390x      || BR2_sh          || \
-		   BR2_sparc64     || BR2_x86_64     || BR2_microblaze  || \
-		   BR2_nios2       || (BR2_arc && BR2_ARC_ATOMIC_EXT)   || \
-		   BR2_csky 	   || BR2_or1k
-	depends on BR2_USE_MMU
-	depends on !BR2_STATIC_LIBS
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 || !BR2_powerpc64le
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 || !BR2_MIPS_NAN_2008
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0 || !BR2_RISCV_64
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 || !BR2_arc
-	depends on !BR2_powerpc_SPE
-	depends on BR2_RISCV_ISA_RVA || !BR2_riscv
+	depends on BR2_PACKAGE_GLIBC_SUPPORTS
 	select BR2_TOOLCHAIN_USES_GLIBC
 	help
 	  This option selects glibc as the C library for the
@@ -68,7 +52,7 @@ config BR2_TOOLCHAIN_BUILDROOT_GLIBC
 	  http://www.gnu.org/software/libc/
 
 comment "glibc needs a toolchain w/ dynamic library, kernel headers >= 3.2"
-	depends on BR2_USE_MMU
+	depends on BR2_PACKAGE_GLIBC_ARCH_SUPPORTS
 	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 
 # glibc >= 2.26 require kernel headers >= 3.10 on powerpc64le.