diff options
Diffstat (limited to 'tools/scripts/Makefile.include')
| -rw-r--r-- | tools/scripts/Makefile.include | 83 |
1 files changed, 49 insertions, 34 deletions
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include index b5ecf137febc..378387f62960 100644 --- a/tools/scripts/Makefile.include +++ b/tools/scripts/Makefile.include @@ -52,44 +52,59 @@ define allow-override endef ifneq ($(LLVM),) -ifneq ($(filter %/,$(LLVM)),) -LLVM_PREFIX := $(LLVM) -else ifneq ($(filter -%,$(LLVM)),) -LLVM_SUFFIX := $(LLVM) -endif - -$(call allow-override,CC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX)) -$(call allow-override,AR,$(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX)) -$(call allow-override,LD,$(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX)) -$(call allow-override,CXX,$(LLVM_PREFIX)clang++$(LLVM_SUFFIX)) -$(call allow-override,STRIP,$(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX)) -else -# Allow setting various cross-compile vars or setting CROSS_COMPILE as a prefix. -$(call allow-override,CC,$(CROSS_COMPILE)gcc) -$(call allow-override,AR,$(CROSS_COMPILE)ar) -$(call allow-override,LD,$(CROSS_COMPILE)ld) -$(call allow-override,CXX,$(CROSS_COMPILE)g++) -$(call allow-override,STRIP,$(CROSS_COMPILE)strip) -endif - -CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?) + ifneq ($(filter %/,$(LLVM)),) + LLVM_PREFIX := $(LLVM) + else ifneq ($(filter -%,$(LLVM)),) + LLVM_SUFFIX := $(LLVM) + else ifneq ($(LLVM),1) + $(error Invalid value for LLVM, see Documentation/kbuild/llvm.rst) + endif -ifneq ($(LLVM),) -HOSTAR ?= $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX) -HOSTCC ?= $(LLVM_PREFIX)clang$(LLVM_SUFFIX) -HOSTLD ?= $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX) + $(call allow-override,CC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX)) + $(call allow-override,CLANG,$(LLVM_PREFIX)clang$(LLVM_SUFFIX)) + $(call allow-override,HOSTCC,$(LLVM_PREFIX)clang$(LLVM_SUFFIX)) + $(call allow-override,AR,$(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX)) + $(call allow-override,HOSTAR,$(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX)) + $(call allow-override,LD,$(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX)) + $(call allow-override,HOSTLD,$(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX)) + $(call allow-override,CXX,$(LLVM_PREFIX)clang++$(LLVM_SUFFIX)) + $(call allow-override,STRIP,$(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX)) + $(call allow-override,LLVM_STRIP,$(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX)) + $(call allow-override,LLC,$(LLVM_PREFIX)llc$(LLVM_SUFFIX)) + $(call allow-override,LLVM_CONFIG,$(LLVM_PREFIX)llvm-config$(LLVM_SUFFIX)) + $(call allow-override,LLVM_OBJCOPY,$(LLVM_PREFIX)llvm-objcopy$(LLVM_SUFFIX)) + $(call allow-override,READELF,$(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX)) + $(call allow-override,HOSTREADELF,$(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX)) else -HOSTAR ?= ar -HOSTCC ?= gcc -HOSTLD ?= ld + # Allow setting various cross-compile vars or setting CROSS_COMPILE as a prefix. + $(call allow-override,CC,$(CROSS_COMPILE)gcc) + $(call allow-override,AR,$(CROSS_COMPILE)ar) + $(call allow-override,LD,$(CROSS_COMPILE)ld) + $(call allow-override,CXX,$(CROSS_COMPILE)g++) + $(call allow-override,STRIP,$(CROSS_COMPILE)strip) + $(call allow-override,READELF,$(CROSS_COMPILE)readelf) + + # Host versions aren't prefixed + $(call allow-override,HOSTAR,ar) + $(call allow-override,HOSTCC,gcc) + $(call allow-override,HOSTLD,ld) + $(call allow-override,HOSTREADELF,readelf) + + # Some tools still require Clang, LLC and/or LLVM utils + $(call allow-override,CLANG,clang) + $(call allow-override,LLC,llc) + $(call allow-override,LLVM_CONFIG,llvm-config) + $(call allow-override,LLVM_OBJCOPY,llvm-objcopy) + $(call allow-override,LLVM_STRIP,llvm-strip) endif -# Some tools require Clang, LLC and/or LLVM utils -CLANG ?= clang -LLC ?= llc -LLVM_CONFIG ?= llvm-config -LLVM_OBJCOPY ?= llvm-objcopy -LLVM_STRIP ?= llvm-strip +# The CC_NO_CLANG probe also runs at parse time for targets that never +# compile, so guard it with 'command -v': when the compiler is not yet +# installed, e.g. the first install-build-deps run, it would otherwise +# spew "gcc: not found". Only the first word of CC is consulted, as CC +# may carry arguments, e.g. 'ccache gcc'. A missing compiler leaves +# CC_NO_CLANG at 1, as if the probe had failed. +CC_NO_CLANG := $(shell if command -v $(firstword $(CC)) >/dev/null 2>&1; then $(CC) -dM -E -x c /dev/null; fi | grep -Fq "__clang__"; echo $$?) # Some tools require bpftool SYSTEM_BPFTOOL ?= bpftool |