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| author | Masahiro Yamada <masahiroy@kernel.org> | 2022-12-11 11:46:47 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2022-12-13 22:21:14 +0900 |
| commit | fccb3d3eda8d19b893e1fd18e8c70b78784b2a72 (patch) | |
| tree | c7685ee943ebd45f5ce0b34c720393ab3311fca8 /scripts/Makefile.compiler | |
| parent | e4412739472b743e18860ad8d979a7ceb3071652 (diff) | |
| download | linux-fccb3d3eda8d19b893e1fd18e8c70b78784b2a72.tar.bz2 | |
kbuild: add test-{ge,gt,le,lt} macros
GNU Make 4.4 introduced $(intcmp ...), which is useful to compare two
integers without forking a new process.
Add test-{ge,gt,le,lt} macros, which work more efficiently with GNU
Make >= 4.4. For older Make versions, they fall back to the 'test'
shell command.
The first two parameters to $(intcmp ...) must not be empty. To avoid
the syntax error, I appended '0' to them. Fortunately, '00' is treated
as '0'. This is needed because CONFIG options may expand to an empty
string when the kernel configuration is not included.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com> # RISC-V
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Diffstat (limited to 'scripts/Makefile.compiler')
| -rw-r--r-- | scripts/Makefile.compiler | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler index 20d353dcabfb..3d8adfd34af1 100644 --- a/scripts/Makefile.compiler +++ b/scripts/Makefile.compiler @@ -63,11 +63,11 @@ cc-disable-warning = $(call try-run,\ # gcc-min-version # Usage: cflags-$(call gcc-min-version, 70100) += -foo -gcc-min-version = $(shell [ $(CONFIG_GCC_VERSION)0 -ge $(1)0 ] && echo y) +gcc-min-version = $(call test-ge, $(CONFIG_GCC_VERSION), $1) # clang-min-version # Usage: cflags-$(call clang-min-version, 110000) += -foo -clang-min-version = $(shell [ $(CONFIG_CLANG_VERSION)0 -ge $(1)0 ] && echo y) +clang-min-version = $(call test-ge, $(CONFIG_CLANG_VERSION), $1) # ld-option # Usage: KBUILD_LDFLAGS += $(call ld-option, -X, -Y) |