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Makefile.clang
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Makefile.clang
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OUTPUT = $(CURDIR)/output
LLVM_SRCDIR = LLVM_SRCDIR_not_set
MUSL_SRCDIR = MUSL_SRCDIR_not_set
TARGETS = \
aarch64-linux-musl \
armv7-linux-musleabihf \
armv7m-linux-musleabi \
armv7em-linux-musleabihf \
x86_64-linux-musl \
# end
TARGET_CONFIG_armv7-linux-musleabihf = -mfpu=vfpv3
TARGET_CONFIG_armv7em-linux-musleabihf = -mfpu=fpv5-d16
DEFAULT_TARGET = x86_64-linux-musl
TOOLS = \
llvm-ar \
llvm-nm \
llvm-objcopy \
llvm-objdump \
llvm-ranlib \
llvm-size \
llvm-strip \
# end
-include config.mak
#
# llvm 13.0.0 switched to using normalized target triples for runtimes.
#
define normalise_target
$(if $(findstring $(words $(subst -, ,$(1))),3),$(subst -linux-musl,-unknown-linux-musl,$(1)),$(1))
endef
define normalise_targets
$(foreach t,$(1),$(call normalise_target,$(t)))
endef
# TODO: determine LLVM_TARGETS_TO_BUILD from TARGETS?
FULL_LLVM_CONFIG = $(LLVM_CONFIG) \
-Wno-dev \
-DCLANG_DEFAULT_CXX_STDLIB=libc++ \
-DCLANG_DEFAULT_LINKER=lld \
-DCLANG_DEFAULT_OBJCOPY=llvm-objcopy \
-DCLANG_DEFAULT_RTLIB=compiler-rt \
-DCMAKE_BUILD_TYPE=MinSizeRel \
-DCMAKE_INSTALL_PREFIX=/clang \
-DDEFAULT_SYSROOT=../../TARGET \
-DLLVM_BUILTIN_TARGETS='$(subst $(subst ,, ),;,$(call normalise_targets,$(TARGETS)))' \
-DLLVM_DEFAULT_TARGET_TRIPLE=$(DEFAULT_TARGET) \
-DLLVM_DISTRIBUTION_COMPONENTS='clang;clang-resource-headers;lld;LTO;$(subst $(subst ,, ),;,$(TOOLS))' \
-DLLVM_ENABLE_PROJECTS='clang;lld' \
-DLLVM_ENABLE_RUNTIMES='compiler-rt;libcxx;libcxxabi;libunwind' \
-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON \
-DLLVM_RUNTIME_TARGETS='$(subst $(subst ,, ),;,$(call normalise_targets,$(TARGETS)))' \
-DLLVM_TARGETS_TO_BUILD='AArch64;ARM;Mips;PowerPC;RISCV;X86' \
$(foreach t,$(TARGETS),-DBUILTINS_$(call normalise_target,$(t))_CMAKE_SYSROOT=$(CURDIR)/obj_sysroot/$(t)) \
$(foreach t,$(TARGETS),-DBUILTINS_$(call normalise_target,$(t))_CMAKE_CXX_FLAGS='$(TARGET_CONFIG_$(t))') \
$(foreach t,$(TARGETS),-DBUILTINS_$(call normalise_target,$(t))_CMAKE_C_FLAGS='$(TARGET_CONFIG_$(t))') \
$(foreach t,$(TARGETS),-DBUILTINS_$(call normalise_target,$(t))_CMAKE_ASM_FLAGS='$(TARGET_CONFIG_$(t))') \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_CMAKE_CXX_FLAGS='$(TARGET_CONFIG_$(t)) -L$(CURDIR)/obj_musl/$(t)/lib -B$(CURDIR)/obj_musl/$(t)/lib -Qunused-arguments') \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_CMAKE_C_FLAGS='$(TARGET_CONFIG_$(t)) -L$(CURDIR)/obj_musl/$(t)/lib -B$(CURDIR)/obj_musl/$(t)/lib -Qunused-arguments') \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_CMAKE_ASM_FLAGS='$(TARGET_CONFIG_$(t))') \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_CMAKE_SYSROOT=$(CURDIR)/obj_sysroot/$(t)) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_COMPILER_RT_BUILD_LIBFUZZER=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_COMPILER_RT_BUILD_MEMPROF=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_COMPILER_RT_BUILD_PROFILE=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_COMPILER_RT_BUILD_SANITIZERS=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_COMPILER_RT_BUILD_XRAY=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXXABI_ENABLE_SHARED=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXXABI_ENABLE_STATIC_UNWINDER=ON) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXXABI_INSTALL_LIBRARY=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXXABI_USE_COMPILER_RT=ON) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXXABI_USE_LLVM_UNWINDER=ON) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY=ON) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXX_HAS_MUSL_LIBC=ON) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBCXX_USE_COMPILER_RT=ON) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBUNWIND_ENABLE_SHARED=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBUNWIND_INSTALL_LIBRARY=OFF) \
$(foreach t,$(TARGETS),-DRUNTIMES_$(call normalise_target,$(t))_LIBUNWIND_USE_COMPILER_RT=ON) \
# end
all: llvm musl
install: install-llvm install-musl install-kernel-headers install-configs install-symlinks
llvm: | obj_llvm/.lc_built_3
musl: | $(foreach t,$(TARGETS),obj_musl/$(t)/.lc_built)
install-musl: $(foreach t,$(TARGETS),install-musl_$(t))
install-kernel-headers: $(foreach t,$(TARGETS),install-kernel-headers_$(t))
install-configs: $(foreach t,$(TARGETS),install-configs_$(t))
install-symlinks: $(foreach t,$(TARGETS),install-symlinks_$(t))
.PHONY: all llvm musl install-llvm install-musl install-kernel-headers install-configs install-symlinks clean
src_llvm: | $(LLVM_SRCDIR)
ln -sf $(LLVM_SRCDIR) $@
src_musl: | $(MUSL_SRCDIR)
ln -sf $(MUSL_SRCDIR) $@
src_kernel_headers: | $(LINUX_SRCDIR)
ln -sf "$(LINUX_SRCDIR)" $@
%/:
mkdir -p $@
obj_llvm/.lc_configured: | obj_llvm/ src_llvm
cd obj_llvm && cmake -G "Ninja" $(FULL_LLVM_CONFIG) ../src_llvm/llvm
touch $@
obj_llvm/.lc_built_1: | obj_llvm/.lc_configured
cd obj_llvm && ninja distribution
touch $@
obj_musl/%/.lc_configured: | obj_musl/%/ src_musl obj_llvm/.lc_built_1
cd obj_musl/$* && ../../src_musl/configure \
--prefix= \
--target=$* \
--disable-wrapper \
LIBCC=../../obj_llvm/lib/clang/$(LLVM_VER)/lib/$(call normalise_target,$*)/libclang_rt.builtins.a \
CC="../../obj_llvm/bin/clang --target=$* $(TARGET_CONFIG_$*)" \
$(MUSL_CONFIG) $(MUSL_CONFIG_$*)
touch $@
obj_sysroot/%/.lc_headers: | obj_sysroot/ obj_musl/%/.lc_configured
cd obj_musl/$* && $(MAKE) DESTDIR=$(CURDIR)/obj_sysroot/$* install-headers
touch $@
obj_llvm/.lc_built_2: | $(foreach t,$(TARGETS),obj_sysroot/$(t)/.lc_headers)
cd obj_llvm && ninja builtins
touch $@
obj_musl/%/.lc_built: | obj_musl/%/.lc_configured obj_llvm/.lc_built_2
cd obj_musl/$* && $(MAKE) AR=../../obj_llvm/bin/llvm-ar \
RANLIB=../../obj_llvm/bin/llvm-ranlib
touch $@
obj_sysroot/%/.lc_crt_workaround:
# Some configure tests for llvm runtimes fail without crtbegin and
# crtend files in the sysroot. The runtimes build generates these files
# leading to a chicken-egg problem.
mkdir -p obj_sysroot/$*/lib
cd obj_sysroot/$*/lib && touch crtbeginT.o crtbeginS.o crtbegin.o crtend.o crtendS.o
touch $@
obj_kernel_headers/%/.lc_built: | src_kernel_headers
mkdir -p $(CURDIR)/obj_kernel_headers/$*/staged
cd src_kernel_headers && $(MAKE) ARCH=$(call fn_linux_arch,$*) O=$(CURDIR)/obj_kernel_headers/$* INSTALL_HDR_PATH=$(CURDIR)/obj_kernel_headers/$*/staged headers_install
find obj_kernel_headers/$*/staged/include '(' -name .install -o -name ..install.cmd ')' -exec rm {} +
touch $@
obj_sysroot/%/.lc_linux_headers: | obj_kernel_headers/%/.lc_built
mkdir -p obj_sysroot/$*/include
cp -R obj_kernel_headers/$*/staged/include/* obj_sysroot/$*/include
obj_llvm/.lc_built_3: | $(foreach t,$(TARGETS),obj_musl/$(t)/.lc_built \
obj_sysroot/$(t)/.lc_crt_workaround \
obj_sysroot/$(t)/.lc_linux_headers)
cd obj_llvm && ninja runtimes
touch $@
install-llvm: | obj_llvm/.lc_built_3
cd obj_llvm && DESTDIR=$(DESTDIR)$(OUTPUT) ninja install-distribution install-builtins install-runtimes
install-musl_%: | obj_musl/%/.lc_built
cd obj_musl/$* && $(MAKE) $(MUSL_VARS) DESTDIR=$(DESTDIR)$(OUTPUT)/$* install
install-kernel-headers_%: | obj_kernel_headers/%/.lc_built
mkdir -p $(DESTDIR)$(OUTPUT)/$*/include
cp -R obj_kernel_headers/$*/staged/include/* $(DESTDIR)$(OUTPUT)/$*/include
install-configs_%: | $(DESDIR)$(OUTPUT)/clang/bin/
echo "--target=$* $(TARGET_CONFIG_$*)" > $(DESTDIR)$(OUTPUT)/clang/bin/$*-clang.cfg
echo "--target=$* $(TARGET_CONFIG_$*)" > $(DESTDIR)$(OUTPUT)/clang/bin/$*-clang++.cfg
install-symlinks_%: | $(DESTDIR)$(OUTPUT)/bin/
cd $(DESTDIR)$(OUTPUT)/bin && ln -sf ../clang/bin/clang $*-clang
cd $(DESTDIR)$(OUTPUT)/bin && ln -sf ../clang/bin/clang++ $*-clang++
cd $(DESTDIR)$(OUTPUT)/bin && ln -sf ../clang/bin/clang-cpp $*-cpp
cd $(DESTDIR)$(OUTPUT)/bin && ln -sf ../clang/bin/clang $*-cc
cd $(DESTDIR)$(OUTPUT)/bin && ln -sf ../clang/bin/clang++ $*-c++
cd $(DESTDIR)$(OUTPUT)/bin && ln -sf ../clang/bin/ld.lld $*-ld
$(foreach t,$(TOOLS),cd $(DESTDIR)$(OUTPUT)/bin && ln -sf ../clang/bin/$(t) $*-$(subst llvm-,,$(t);))
clean:
rm -rf src_* obj_*
# $(call fn_linux_arch,target-triple)
# Determine linux architecture from target triple
ifeq ($(LINUX_SRCDIR),)
$(error LINUX_SRCDIR is required for llvm libc++ build)
endif
LINUX_ARCH_LIST := $(sort $(notdir $(wildcard $(LINUX_SRCDIR)/arch/*)))
fn_target_arch = $(firstword $(subst -, ,$(1)))
fn_target_arch_mangled = $(patsubst i%86,x86,$(patsubst aarch64%,arm64%,$(call fn_target_arch,$(1))))
fn_linux_arch = $(lastword $(foreach a,$(LINUX_ARCH_LIST),$(if $(filter $(a)%,$(call fn_target_arch_mangled,$(1))),$(a))))
.SECONDARY: