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| author | Matthew Maurer <mmaurer@google.com> | 2024-08-20 21:48:56 +0200 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2024-09-16 18:04:37 +0200 |
| commit | c42297438aee70e2d391225de3d35ffeb2bdbaf9 (patch) | |
| tree | 9837a6c9ffb1d47ae2024f2052a16130ef5e26bd /scripts/Makefile.compiler | |
| parent | kasan: simplify and clarify Makefile (diff) | |
| download | linux-c42297438aee70e2d391225de3d35ffeb2bdbaf9.tar.xz linux-c42297438aee70e2d391225de3d35ffeb2bdbaf9.zip | |
kbuild: rust: Define probing macros for rustc
Creates flag probe macro variants for `rustc`. These are helpful
because:
1. The kernel now supports a minimum `rustc` version rather than a
single version.
2. `rustc` links against a range of LLVM revisions, occasionally even
ones without an official release number. Since the availability of
some Rust flags depends on which LLVM it has been linked against,
probing is necessary.
Signed-off-by: Matthew Maurer <mmaurer@google.com>
Link: https://github.com/Rust-for-Linux/linux/pull/1087
Link: https://lore.kernel.org/r/20240820194910.187826-2-mmaurer@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'scripts/Makefile.compiler')
| -rw-r--r-- | scripts/Makefile.compiler | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler index 92be0c9a13ee..057305eae85c 100644 --- a/scripts/Makefile.compiler +++ b/scripts/Makefile.compiler @@ -72,3 +72,18 @@ clang-min-version = $(call test-ge, $(CONFIG_CLANG_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)) + +# __rustc-option +# Usage: MY_RUSTFLAGS += $(call __rustc-option,$(RUSTC),$(MY_RUSTFLAGS),-Cinstrument-coverage,-Zinstrument-coverage) +__rustc-option = $(call try-run,\ + $(1) $(2) $(3) --crate-type=rlib /dev/null --out-dir=$$TMPOUT -o "$$TMP",$(3),$(4)) + +# rustc-option +# Usage: rustflags-y += $(call rustc-option,-Cinstrument-coverage,-Zinstrument-coverage) +rustc-option = $(call __rustc-option, $(RUSTC),\ + $(KBUILD_RUSTFLAGS),$(1),$(2)) + +# rustc-option-yn +# Usage: flag := $(call rustc-option-yn,-Cinstrument-coverage) +rustc-option-yn = $(call try-run,\ + $(RUSTC) $(KBUILD_RUSTFLAGS) $(1) --crate-type=rlib /dev/null --out-dir=$$TMPOUT -o "$$TMP",y,n) |