198d863a5SJerome Forissier# CROSS_COMPILE_$(sm) is derived from CROSS_COMPILE/CROSS_COMPILE32/ 298d863a5SJerome Forissier# CROSS_COMPILE64 and indicates the target that should be passed to clang. Path 398d863a5SJerome Forissier# components are ignored, as well as any command before the compiler name (for 498d863a5SJerome Forissier# instance "/some/path/ccache /other/path/arm-linux-gnueabihf-"). 598d863a5SJerome Forissier# We try to extract any ccache command if present. 698d863a5SJerome Forissierclang-target := $(patsubst %-,%,$(notdir $(lastword $(CROSS_COMPILE_$(sm))))) 798d863a5SJerome Forissierccache-cmd := $(if $(findstring ccache,$(CROSS_COMPILE_$(sm))),$(firstword $(CROSS_COMPILE_$(sm))) ,) 898d863a5SJerome Forissier 998d863a5SJerome ForissierCC$(sm) := $(ccache-cmd)clang --target=$(clang-target) 1098d863a5SJerome ForissierCPP$(sm) := $(ccache-cmd)clang-cpp --target=$(clang-target) 1198d863a5SJerome ForissierLD$(sm) := $(ccache-cmd)ld.lld 1298d863a5SJerome Forissier 1398d863a5SJerome Forissierifeq ($(sm)-$(CFG_WITH_PAGER),core-y) 1498d863a5SJerome Forissier# Workaround an issue with all_objs.o and unpaged.o when CFG_WITH_PAGER=y: 1598d863a5SJerome Forissier# ld.ldd merges .text.* sections into .text, even though the linker script does 1698d863a5SJerome Forissier# not tell to do so. --relocatable would avoid that, but is not compatible with 1798d863a5SJerome Forissier# --gc-sections. A trivial patch to ld.lld can fix the issue (in 1898d863a5SJerome Forissier# lld/ELF/Writer.cpp, change elf::getOutputSectionName() to always return 1998d863a5SJerome Forissier# s->name) so perhaps a new command line option could be proposed upstream? 2098d863a5SJerome Forissier# Anyway, use GNU.ld for the moment. 2198d863a5SJerome ForissierLDcore := $(CROSS_COMPILE_$(sm))ld 2298d863a5SJerome Forissierendif 2398d863a5SJerome Forissier 2498d863a5SJerome ForissierAR$(sm) := $(ccache-cmd)llvm-ar 2598d863a5SJerome ForissierNM$(sm) := llvm-nm 26*33017d85SJerome ForissierOBJCOPY$(sm) := llvm-objcopy 2798d863a5SJerome Forissier 2898d863a5SJerome Forissier# llvm-objdump: 2998d863a5SJerome Forissier# - Does not support mixed 32-bit ARM and Thumb instructions 3098d863a5SJerome Forissier# - Has a poorer output than the binutils version (static functions not shown, 3198d863a5SJerome Forissier# for instance). 3298d863a5SJerome Forissier# Rely on the GNU binutils version instead (if available). 3398d863a5SJerome Forissierbinutils-objdump = $(CROSS_COMPILE_$(sm))objdump 3498d863a5SJerome Forissierifneq (,$(filter GNU,$(shell $(binutils-objdump) -v 2>&1))) 3598d863a5SJerome ForissierOBJDUMP$(sm) := $(binutils-objdump) 3698d863a5SJerome Forissierelse 3798d863a5SJerome ForissierOBJDUMP$(sm) := echo "Warning: binutils objdump not found, file will be empty" >&2; true 3898d863a5SJerome Forissierendif 3998d863a5SJerome Forissier 4098d863a5SJerome ForissierREADELF$(sm) := llvm-readelf 4198d863a5SJerome Forissier 4298d863a5SJerome Forissiernostdinc$(sm) := -nostdinc -isystem $(shell $(CC$(sm)) \ 4398d863a5SJerome Forissier -print-file-name=include 2> /dev/null) 4498d863a5SJerome Forissier 4598d863a5SJerome Forissiercomp-cflags-warns-clang := -Wno-language-extension-token \ 4698d863a5SJerome Forissier -Wno-gnu-zero-variadic-macro-arguments 4798d863a5SJerome Forissier 4898d863a5SJerome Forissierlibgcc$(sm) := 4998d863a5SJerome Forissier 5098d863a5SJerome Forissier# Define these to something to discover accidental use 5198d863a5SJerome ForissierCC := false 5298d863a5SJerome ForissierCPP := false 5398d863a5SJerome ForissierLD := false 5498d863a5SJerome ForissierAR := false 5598d863a5SJerome ForissierNM := false 5698d863a5SJerome ForissierOBJCOPY := false 5798d863a5SJerome ForissierOBJDUMP := false 5898d863a5SJerome ForissierREADELF := false 5998d863a5SJerome Forissiernostdinc := --bad-nostdinc-variable 6098d863a5SJerome Forissierlibgcc := --bad-libgcc-variable 6198d863a5SJerome Forissier 62