diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 62 |
1 files changed, 56 insertions, 6 deletions
@@ -86,9 +86,11 @@ endif ifeq ($(KBUILD_VERBOSE),1) quiet = Q = + CARGO_VERBOSE = --verbose else quiet=quiet_ Q = @ + CARGO_VERBOSE = # TODO: could be --quiet if needed endif # If the user is running make -s (silent mode), suppress echoing of @@ -446,6 +448,8 @@ READELF = $(CROSS_COMPILE)readelf OBJSIZE = $(CROSS_COMPILE)size STRIP = $(CROSS_COMPILE)strip endif +RUSTC = rustc +CARGO = cargo PAHOLE = pahole RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve_btfids/resolve_btfids LEX = flex @@ -470,9 +474,13 @@ CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) NOSTDINC_FLAGS := CFLAGS_MODULE = +RUSTCFLAGS_MODULE = +CARGOFLAGS_MODULE = AFLAGS_MODULE = LDFLAGS_MODULE = CFLAGS_KERNEL = +RUSTCFLAGS_KERNEL = +CARGOFLAGS_KERNEL = AFLAGS_KERNEL = LDFLAGS_vmlinux = @@ -500,16 +508,27 @@ KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ -Wno-format-security \ -std=gnu89 KBUILD_CPPFLAGS := -D__KERNEL__ +KBUILD_RUSTCFLAGS := +# TODO: a simple way to update `Cargo.lock` when we add a new driver +# TODO: another option is using explicit target specs, e.g. +# `--target=$(srctree)/arch/$(SRCARCH)/rust-target-spec.json` +KBUILD_CARGOFLAGS := $(CARGO_VERBOSE) --locked \ + -Z build-std=core,alloc -Z unstable-options \ + --out-dir=out --target=x86_64-linux-kernel KBUILD_AFLAGS_KERNEL := KBUILD_CFLAGS_KERNEL := +KBUILD_RUSTCFLAGS_KERNEL := +KBUILD_CARGOFLAGS_KERNEL := KBUILD_AFLAGS_MODULE := -DMODULE KBUILD_CFLAGS_MODULE := -DMODULE +KBUILD_RUSTCFLAGS_MODULE := --cfg module +KBUILD_CARGOFLAGS_MODULE := KBUILD_LDFLAGS_MODULE := export KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds KBUILD_LDFLAGS := CLANG_FLAGS := -export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC +export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC RUSTC CARGO export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD @@ -518,9 +537,11 @@ export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN CFLAGS_KCSAN +export KBUILD_RUSTCFLAGS RUSTCFLAGS_KERNEL RUSTCFLAGS_MODULE +export KBUILD_CARGOFLAGS CARGOFLAGS_KERNEL CARGOFLAGS_MODULE export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE -export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE -export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL +export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_RUSTCFLAGS_MODULE KBUILD_CARGOFLAGS_MODULE KBUILD_LDFLAGS_MODULE +export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL KBUILD_RUSTCFLAGS_KERNEL KBUILD_CARGOFLAGS_KERNEL # Files to ignore in find ... statements @@ -733,12 +754,21 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) +# TODO: perhaps we could have some independent options for Rust only +KBUILD_CARGOFLAGS += --release + ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE KBUILD_CFLAGS += -O2 +KBUILD_RUSTCFLAGS += # TODO: do we want -C opt-level=2 here? +KBUILD_CARGOFLAGS += else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 KBUILD_CFLAGS += -O3 +KBUILD_RUSTCFLAGS += # flags already passed by cargo's --release +KBUILD_CARGOFLAGS += else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE KBUILD_CFLAGS += -Os +KBUILD_RUSTCFLAGS += -C opt-level=z +KBUILD_CARGOFLAGS += endif # Tell gcc to never replace conditional load with a non-conditional one @@ -814,6 +844,10 @@ KBUILD_CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-f endif DEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments) +DEBUG_RUSTCFLAGS := +DEBUG_CARGOFLAGS := + +# TODO: see what we should set for rustc/cargo for debug ifdef CONFIG_DEBUG_INFO ifdef CONFIG_DEBUG_INFO_SPLIT @@ -841,6 +875,12 @@ endif KBUILD_CFLAGS += $(DEBUG_CFLAGS) export DEBUG_CFLAGS +KBUILD_RUSTCFLAGS += $(DEBUG_RUSTCFLAGS) +export DEBUG_RUSTCFLAGS + +KBUILD_CARGOFLAGS += $(DEBUG_CARGOFLAGS) +export DEBUG_CARGOFLAGS + ifdef CONFIG_FUNCTION_TRACER ifdef CONFIG_FTRACE_MCOUNT_RECORD # gcc 5 supports generating the mcount tables directly @@ -972,10 +1012,12 @@ include $(addprefix $(srctree)/, $(include-y)) # Do not add $(call cc-option,...) below this line. When you build the kernel # from the clean source tree, the GCC plugins do not exist at this point. -# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments +# Add user supplied CPPFLAGS, AFLAGS, CFLAGS, RUSTCFLAGS and CARGOFLAGS as the last assignments KBUILD_CPPFLAGS += $(KCPPFLAGS) KBUILD_AFLAGS += $(KAFLAGS) KBUILD_CFLAGS += $(KCFLAGS) +KBUILD_RUSTCFLAGS += $(KRUSTCFLAGS) +KBUILD_CARGOFLAGS += $(KCARGOFLAGS) KBUILD_LDFLAGS_MODULE += --build-id LDFLAGS_vmlinux += --build-id @@ -1100,6 +1142,10 @@ export MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps ifeq ($(KBUILD_EXTMOD),) core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ +ifdef CONFIG_HAS_RUST +core-y += rust/ +endif + vmlinux-dirs := $(patsubst %/,%,$(filter %/, \ $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ $(libs-y) $(libs-m))) @@ -1483,13 +1529,17 @@ DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS # clean: rm-files := $(CLEAN_FILES) -PHONY += archclean vmlinuxclean +PHONY += archclean vmlinuxclean cargoclean vmlinuxclean: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) -clean: archclean vmlinuxclean +# TODO: clean particular subfolders via `Makefile.clean` +cargoclean: + $(Q)$(CARGO) clean + +clean: archclean vmlinuxclean cargoclean # mrproper - Delete all generated files, including .config # |