diff options
| author | Miguel Ojeda <ojeda@kernel.org> | 2025-02-10 17:42:45 +0100 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2025-03-15 21:19:32 +0900 |
| commit | ac954145e1ee3f72033161cbe4ac0b16b5354ae7 (patch) | |
| tree | 1521b1089ba6b334892364c2f3bc070044293ed5 | |
| parent | 144fced6852ba11c90560c996e986b4563f089af (diff) | |
kbuild: rust: add rustc-min-version support function
Introduce `rustc-min-version` support function that mimics
`{gcc,clang}-min-version` ones, following commit 88b61e3bff93
("Makefile.compiler: replace cc-ifversion with compiler-specific macros").
In addition, use it in the first use case we have in the kernel (which
was done independently to minimize the changes needed for the fix).
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Fiona Behrens <me@Kloenk.dev>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| -rw-r--r-- | Documentation/kbuild/makefiles.rst | 14 | ||||
| -rw-r--r-- | arch/arm64/Makefile | 2 | ||||
| -rw-r--r-- | scripts/Makefile.compiler | 4 |
3 files changed, 19 insertions, 1 deletions
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst index 25e04e47fafff..3b9a8bc671e2e 100644 --- a/Documentation/kbuild/makefiles.rst +++ b/Documentation/kbuild/makefiles.rst @@ -667,6 +667,20 @@ cc-cross-prefix endif endif +$(RUSTC) support functions +-------------------------- + +rustc-min-version + rustc-min-version tests if the value of $(CONFIG_RUSTC_VERSION) is greater + than or equal to the provided value and evaluates to y if so. + + Example:: + + rustflags-$(call rustc-min-version, 108500) := -Cfoo + + In this example, rustflags-y will be assigned the value -Cfoo if + $(CONFIG_RUSTC_VERSION) is >= 1.85.0. + $(LD) support functions ----------------------- diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 2b25d671365f2..1d5dfcd1c13ed 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -48,7 +48,7 @@ KBUILD_CFLAGS += $(CC_FLAGS_NO_FPU) \ KBUILD_CFLAGS += $(call cc-disable-warning, psabi) KBUILD_AFLAGS += $(compat_vdso) -ifeq ($(call test-ge, $(CONFIG_RUSTC_VERSION), 108500),y) +ifeq ($(call rustc-min-version, 108500),y) KBUILD_RUSTFLAGS += --target=aarch64-unknown-none-softfloat else KBUILD_RUSTFLAGS += --target=aarch64-unknown-none -Ctarget-feature="-neon" diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler index 8c1029687e2e4..8956587b85470 100644 --- a/scripts/Makefile.compiler +++ b/scripts/Makefile.compiler @@ -67,6 +67,10 @@ gcc-min-version = $(call test-ge, $(CONFIG_GCC_VERSION), $1) # Usage: cflags-$(call clang-min-version, 110000) += -foo clang-min-version = $(call test-ge, $(CONFIG_CLANG_VERSION), $1) +# rustc-min-version +# Usage: rustc-$(call rustc-min-version, 108500) += -Cfoo +rustc-min-version = $(call test-ge, $(CONFIG_RUSTC_VERSION), $1) + # ld-option # Usage: KBUILD_LDFLAGS += $(call ld-option, -X, -Y) ld-option = $(call try-run, $(LD) $(KBUILD_LDFLAGS) $(1) -v,$(1),$(2),$(3)) |