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authorMasahiro Yamada <masahiroy@kernel.org>2021-02-16 12:10:04 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2021-02-22 08:22:04 +0900
commit02aff85922043cf175ebbe5fc3430acfeaeb8393 (patch)
treecce90bcdc207e2cbcf0afdbe00aff31ea43ed43a /init/Kconfig
parent05f6bbf2d714309607d5533f0265a95d037610b4 (diff)
kbuild: check the minimum linker version in Kconfig
Unify the two scripts/ld-version.sh and scripts/lld-version.sh, and check the minimum linker version like scripts/cc-version.sh did. I tested this script for some corner cases reported in the past: - GNU ld version 2.25-15.fc23 as reported by commit 8083013fc320 ("ld-version: Fix it on Fedora") - GNU ld (GNU Binutils) 2.20.1.20100303 as reported by commit 0d61ed17dd30 ("ld-version: Drop the 4th and 5th version components") This script show an error message if the linker is too old: $ make LD=ld.lld-9 SYNC include/config/auto.conf *** *** Linker is too old. *** Your LLD version: 9.0.1 *** Minimum LLD version: 10.0.1 *** scripts/Kconfig.include:50: Sorry, this linker is not supported. make[2]: *** [scripts/kconfig/Makefile:71: syncconfig] Error 1 make[1]: *** [Makefile:600: syncconfig] Error 2 make: *** [Makefile:708: include/config/auto.conf] Error 2 I also moved the check for gold to this script, so gold is still rejected: $ make LD=gold SYNC include/config/auto.conf gold linker is not supported as it is not capable of linking the kernel proper. scripts/Kconfig.include:50: Sorry, this linker is not supported. make[2]: *** [scripts/kconfig/Makefile:71: syncconfig] Error 1 make[1]: *** [Makefile:600: syncconfig] Error 2 make: *** [Makefile:708: include/config/auto.conf] Error 2 Thanks to David Laight for suggesting shell script improvements. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org>
Diffstat (limited to 'init/Kconfig')
-rw-r--r--init/Kconfig21
1 files changed, 13 insertions, 8 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 7bcfa24524c2..42b69ee29dca 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -33,24 +33,29 @@ config GCC_VERSION
default $(cc-version) 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 $(success,test "$(cc-name)" = Clang)
-config LD_IS_LLD
- def_bool $(success,$(LD) -v | head -n 1 | grep -q LLD)
-
config CLANG_VERSION
int
default $(cc-version) if CC_IS_CLANG
default 0
+config LD_IS_BFD
+ def_bool $(success,test "$(ld-name)" = BFD)
+
+config LD_VERSION
+ int
+ default $(ld-version) if LD_IS_BFD
+ default 0
+
+config LD_IS_LLD
+ def_bool $(success,test "$(ld-name)" = LLD)
+
config LLD_VERSION
int
- default $(shell,$(srctree)/scripts/lld-version.sh $(LD))
+ default $(ld-version) if LD_IS_LLD
+ default 0
config CC_CAN_LINK
bool