init/kconfig: Add LD_VERSION Kconfig

This option can be used in Kconfig files to compare the ld version
and enable/disable incompatible config options if required.

This option is used in the subsequent patch along with GCC_VERSION to
filter out an incompatible feature.

Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/init/Kconfig b/init/Kconfig
index 452bc18..68ddbcd 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -17,6 +17,10 @@ config GCC_VERSION
        default $(shell,$(srctree)/scripts/gcc-version.sh $(CC)) if CC_IS_GCC
        default 0
 
+config LD_VERSION
+       int
+       default $(shell,$(LD) --version | $(srctree)/scripts/ld-version.sh)
+
 config CC_IS_CLANG
        def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)