support/scripts/gen-bootlin-toolchains: handle BR2_BINFMT_FLAT

With the introduction of ARM FDPIC support, we need to make sure that
the existing ARM FLAT external toolchains are not made
visible/available when ARM FDPIC is selected. This commit updates the
gen-bootlin-toolchains script to take this into account.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/scripts/gen-bootlin-toolchains

@@ -62,7 +62,7 @@ arches = {
         'prefix': 'armeb',
     },
     'armv7m': {
-        'conditions': ['BR2_arm', 'BR2_ARM_CPU_ARMV7M'],
+        'conditions': ['BR2_arm', 'BR2_ARM_CPU_ARMV7M', 'BR2_BINFMT_FLAT'],
         'test_options': ['BR2_arm', 'BR2_cortex_m4'],
         'prefix': 'arm',
     },

toolchain/toolchain-external/toolchain-external-bootlin/Config.in.options

@@ -10,7 +10,7 @@ config BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARCH_SUPPORTS
 	default y if BR2_arm && BR2_ARM_CPU_ARMV6 && BR2_ARM_EABIHF
 	default y if BR2_arm && BR2_ARM_CPU_ARMV7A && BR2_ARM_EABIHF
 	default y if BR2_armeb && BR2_ARM_CPU_ARMV7A && BR2_ARM_EABIHF
-	default y if BR2_arm && BR2_ARM_CPU_ARMV7M
+	default y if BR2_arm && BR2_ARM_CPU_ARMV7M && BR2_BINFMT_FLAT
 	default y if BR2_m68k_m68k
 	default y if BR2_m68k_cf
 	default y if BR2_microblazebe
@@ -1136,6 +1136,7 @@ config BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV7M_UCLIBC_BLEEDING_EDGE
 	bool "armv7m uclibc bleeding-edge 2024.05-1"
 	depends on BR2_arm
 	depends on BR2_ARM_CPU_ARMV7M
+	depends on BR2_BINFMT_FLAT
 	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_15
 	select BR2_TOOLCHAIN_GCC_AT_LEAST_14
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15
@@ -1160,6 +1161,7 @@ config BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV7M_UCLIBC_STABLE
 	bool "armv7m uclibc stable 2024.05-1"
 	depends on BR2_arm
 	depends on BR2_ARM_CPU_ARMV7M
+	depends on BR2_BINFMT_FLAT
 	depends on !BR2_ARCH_NEEDS_GCC_AT_LEAST_14
 	select BR2_TOOLCHAIN_GCC_AT_LEAST_13
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19