Files
tinygo/make/llvm.mk
T
deadprogram 421d98b248 ci: stop the LLVM caches from being evicted
The Actions cache of the repository was at 10.24 GB against a quota of
10 GB, so GitHub removed entries by least recent use. The LLVM entries
were among the first to go, and CI then built LLVM again although the
LLVM version did not change.

The Docker buildx layer blobs held 6.0 GB of the quota. All LLVM caches
together held 1.97 GB. Move the Docker layer cache to a registry cache in
GHCR, which does not use the Actions quota. Both jobs have the necessary
permission and login already.

Pin the LLVM commit in llvm-version.txt and fetch that commit, in place
of a clone of the branch tip tinygo_22.x. Add a hash of that file to each
LLVM cache key, so a change of the LLVM version invalidates the caches
and no other change does.

Also rename the LLVM image tags from llvm-20 to llvm-22.
2026-08-29 17:18:13 +02:00

106 lines
5.3 KiB
Makefile

# LLVM and Binaryen: component lists, link flags, source checkout, and build.
.PHONY: llvm-source $(LLVM_BUILDDIR)
LLVM_COMPONENTS = all-targets analysis asmparser asmprinter bitreader bitwriter codegen core coroutines coverage debuginfodwarf debuginfopdb dtlto executionengine frontenddriver frontendhlsl frontendopenmp instrumentation interpreter ipo irreader libdriver linker lto mc mcjit objcarcopts option profiledata scalaropts support target windowsdriver windowsmanifest
ifeq ($(OS),Windows_NT)
EXE = .exe
START_GROUP = -Wl,--start-group
END_GROUP = -Wl,--end-group
# PIC needs to be disabled for libclang to work.
LLVM_OPTION += -DLLVM_ENABLE_PIC=OFF
# Statically link the C++ and GCC runtime into LLVM tools so they don't
# depend on MinGW DLLs that may not be on PATH when executed during the build.
LLVM_OPTION += '-DCMAKE_EXE_LINKER_FLAGS=-static-libgcc -static-libstdc++'
CGO_CPPFLAGS += -DCINDEX_NO_EXPORTS
CGO_LDFLAGS += -static -static-libgcc -static-libstdc++
CGO_LDFLAGS_EXTRA += -lversion
USE_SYSTEM_BINARYEN ?= 1
else ifeq ($(uname),Darwin)
MD5SUM ?= md5
CGO_LDFLAGS += -lxar
USE_SYSTEM_BINARYEN ?= 1
else ifeq ($(uname),FreeBSD)
MD5SUM ?= md5
START_GROUP = -Wl,--start-group
END_GROUP = -Wl,--end-group
else
START_GROUP = -Wl,--start-group
END_GROUP = -Wl,--end-group
endif
# md5sum binary default, can be overridden by an environment variable
MD5SUM ?= md5sum
# Libraries that should be linked in for the statically linked Clang.
CLANG_LIB_NAMES = clangAnalysis clangAnalysisLifetimeSafety clangAPINotes clangAST clangASTMatchers clangBasic clangCodeGen clangCrossTU clangDriver clangDynamicASTMatchers clangEdit clangExtractAPI clangFormat clangFrontend clangFrontendTool clangHandleCXX clangHandleLLVM clangIndex clangInstallAPI clangLex clangOptions clangParse clangRewrite clangRewriteFrontend clangSema clangSerialization clangSupport clangTooling clangToolingASTDiff clangToolingCore clangToolingInclusions
CLANG_LIBS = $(START_GROUP) $(addprefix -l,$(CLANG_LIB_NAMES)) $(END_GROUP) -lstdc++
# Libraries that should be linked in for the statically linked LLD.
LLD_LIB_NAMES = lldCOFF lldCommon lldELF lldMachO lldMinGW lldWasm
LLD_LIBS = $(START_GROUP) $(addprefix -l,$(LLD_LIB_NAMES)) $(END_GROUP)
# Other libraries that are needed to link TinyGo.
EXTRA_LIB_NAMES = LLVMDTLTO LLVMInterpreter LLVMMCA LLVMRISCVTargetMCA LLVMX86TargetMCA
# All libraries to be built and linked with the tinygo binary (lib/lib*.a).
LIB_NAMES = clang $(CLANG_LIB_NAMES) $(LLD_LIB_NAMES) $(EXTRA_LIB_NAMES)
# These build targets appear to be the only ones necessary to build all TinyGo
# dependencies. Only building a subset significantly speeds up rebuilding LLVM.
# The Makefile rules convert a name like lldELF to lib/liblldELF.a to match the
# library path (for ninja).
# This list also includes a few tools that are necessary as part of the full
# TinyGo build.
NINJA_BUILD_TARGETS = clang llvm-config llvm-ar llvm-nm lld $(addprefix lib/lib,$(addsuffix .a,$(LIB_NAMES)))
# For static linking.
ifneq ("$(wildcard $(LLVM_BUILDDIR)/bin/llvm-config*)","")
CGO_CPPFLAGS+=$(shell $(LLVM_CONFIG_PREFIX) $(LLVM_BUILDDIR)/bin/llvm-config --cppflags) -I$(abspath $(LLVM_BUILDDIR))/tools/clang/include -I$(abspath $(CLANG_SRC))/include -I$(abspath $(LLD_SRC))/include
CGO_CXXFLAGS=-std=c++17
ifneq ($(uname),Windows_NT)
# Disable GCC DWARF compression: lld built without zlib cannot link
# object files with ELFCOMPRESS_ZLIB debug sections.
CGO_CFLAGS+=-gz=none
CGO_CXXFLAGS+=-gz=none
endif
CGO_LDFLAGS+=-L$(abspath $(LLVM_BUILDDIR)/lib) -lclang $(CLANG_LIBS) $(LLD_LIBS) $(shell $(LLVM_CONFIG_PREFIX) $(LLVM_BUILDDIR)/bin/llvm-config --ldflags --libs --system-libs $(LLVM_COMPONENTS)) -lstdc++ $(CGO_LDFLAGS_EXTRA)
endif
# Pinned in llvm-version.txt. Branch tinygo_22.x of tinygo-org/llvm-project.
LLVM_REVISION = $(shell cat llvm-version.txt)
$(LLVM_PROJECTDIR)/llvm:
git init $(LLVM_PROJECTDIR)
cd $(LLVM_PROJECTDIR) && \
git remote add origin https://github.com/tinygo-org/llvm-project && \
git fetch --depth=1 origin $(LLVM_REVISION) && \
git checkout FETCH_HEAD
llvm-source: $(LLVM_PROJECTDIR)/llvm ## Get LLVM sources
# Configure LLVM.
TINYGO_SOURCE_DIR=$(shell pwd)
$(LLVM_BUILDDIR)/build.ninja:
mkdir -p $(LLVM_BUILDDIR) && cd $(LLVM_BUILDDIR) && cmake -G Ninja $(TINYGO_SOURCE_DIR)/$(LLVM_PROJECTDIR)/llvm "-DLLVM_TARGETS_TO_BUILD=X86;ARM;AArch64;AVR;Mips;RISCV;WebAssembly" "-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=Xtensa" -DCMAKE_BUILD_TYPE=Release -DLIBCLANG_BUILD_STATIC=ON -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_ZLIB=OFF -DLLVM_ENABLE_ZSTD=OFF -DLLVM_ENABLE_LIBEDIT=OFF -DLLVM_ENABLE_Z3_SOLVER=OFF -DLLVM_ENABLE_OCAMLDOC=OFF -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_ENABLE_PROJECTS="clang;lld" -DLLVM_TOOL_CLANG_TOOLS_EXTRA_BUILD=OFF -DCLANG_ENABLE_STATIC_ANALYZER=OFF -DCLANG_ENABLE_ARCMT=OFF $(LLVM_OPTION)
$(LLVM_BUILDDIR): $(LLVM_BUILDDIR)/build.ninja ## Build LLVM
cd $(LLVM_BUILDDIR) && ninja $(NINJA_BUILD_TARGETS)
ifneq ($(USE_SYSTEM_BINARYEN),1)
# Build Binaryen
.PHONY: binaryen
binaryen: build/wasm-opt$(EXE)
build/wasm-opt$(EXE):
mkdir -p build
cd lib/binaryen && cmake -G Ninja . -DBUILD_STATIC_LIB=ON -DBUILD_TESTS=OFF -DENABLE_WERROR=OFF $(BINARYEN_OPTION) && ninja bin/wasm-opt$(EXE)
cp lib/binaryen/bin/wasm-opt$(EXE) build/wasm-opt$(EXE)
endif