mirror of
https://github.com/rui314/mold.git
synced 2024-10-05 00:57:08 +03:00
3499ee6ac7
Core part of this change is cleaning up Mold from UBSan alignment errors.
Following approach inspired by LLVM's ELFTypes is done here:
1. Introduce generic Packed class acting as proxy for unaligned aggregated value.
Every access to such value through proxy is secured by memcpy call.
2. Replace plain struct members with Packed members wherever it matters.
3. Use explicit castings through Packed type for misaligned loads.
For more background please check: https://github.com/rui314/mold/discussions/477
Signed-off-by: Dawid Jurczak <dawid_jurek@vp.pl>
230 lines
6.7 KiB
Makefile
230 lines
6.7 KiB
Makefile
# If you want to enable ASAN and UBSan, run `make` with the following options:
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#
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# make CXXFLAGS="-fsanitize=address -fsanitize=undefined -g" \
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# LDFLAGS="-fsanitize=address -fsanitize=undefined" USE_MIMALLOC=0
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VERSION = 1.2.1
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PREFIX = /usr/local
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BINDIR = $(PREFIX)/bin
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LIBDIR = $(PREFIX)/lib
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LIBEXECDIR = $(PREFIX)/libexec
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MANDIR = $(PREFIX)/share/man
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INSTALL = install
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INSTALL_PROGRAM = $(INSTALL)
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INSTALL_DATA = $(INSTALL) -m 644
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D = $(DESTDIR)
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# CXX defaults to `g++`. Rewrite it with a vendor-neutral compiler
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# name `c++`.
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ifeq ($(origin CXX), default)
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CXX = c++
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endif
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# Allow overriding pkg-config binary
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PKG_CONFIG = pkg-config
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# If you want to keep symbols in the installed binary, run make with
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# `STRIP=true` to run /bin/true instead of the strip command.
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STRIP = strip
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SRCS = $(wildcard *.cc elf/*.cc macho/*.cc)
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OBJS = $(SRCS:%.cc=out/%.o)
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OS := $(shell uname -s)
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ARCH := $(shell uname -m)
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IS_ANDROID = 0
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ifneq ($(findstring -android,$(shell $(CC) -dumpmachine)),)
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IS_ANDROID = 1
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endif
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# If you want to compile mold for debugging, invoke make as
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# `make CXXFLAGS=-g`.
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CFLAGS = -O2
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CXXFLAGS = -O2
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MOLD_CXXFLAGS := -std=c++20 -fno-exceptions -fno-unwind-tables \
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-fno-asynchronous-unwind-tables -Ithird-party/xxhash \
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-DMOLD_VERSION=\"$(VERSION)\" -DLIBDIR="\"$(LIBDIR)\""
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MOLD_LDFLAGS := -pthread -lz -lm -ldl
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GIT_HASH := $(shell [ -d .git ] && git rev-parse HEAD)
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ifneq ($(GIT_HASH),)
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MOLD_CXXFLAGS += -DGIT_HASH=\"$(GIT_HASH)\"
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endif
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LTO = 0
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ifeq ($(LTO), 1)
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CXXFLAGS += -flto -O3
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LDFLAGS += -flto
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endif
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# By default, we want to use mimalloc as a memory allocator. mimalloc
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# is disabled on macOS and Android because it didn't work on those hosts.
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USE_MIMALLOC = 1
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ifeq ($(OS), Darwin)
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USE_MIMALLOC = 0
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else ifeq ($(IS_ANDROID), 1)
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USE_MIMALLOC = 0
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endif
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ifeq ($(USE_MIMALLOC), 1)
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ifdef SYSTEM_MIMALLOC
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MOLD_CXXFLAGS += -DUSE_SYSTEM_MIMALLOC
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MOLD_LDFLAGS += -lmimalloc
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else
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MIMALLOC_LIB = out/mimalloc/libmimalloc.a
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MOLD_CXXFLAGS += -Ithird-party/mimalloc/include
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MOLD_LDFLAGS += -Wl,-whole-archive $(MIMALLOC_LIB) -Wl,-no-whole-archive
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endif
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endif
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ifdef SYSTEM_TBB
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MOLD_LDFLAGS += -ltbb
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else
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TBB_LIB = out/tbb/libs/libtbb.a
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MOLD_LDFLAGS += $(TBB_LIB)
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MOLD_CXXFLAGS += -Ithird-party/tbb/include
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endif
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ifeq ($(OS), Linux)
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ifeq ($(IS_ANDROID), 0)
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# glibc before 2.17 need librt for clock_gettime
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MOLD_LDFLAGS += -Wl,-push-state -Wl,-as-needed -lrt -Wl,-pop-state
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endif
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endif
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NEEDS_LIBCRYPTO = 0
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ifneq ($(OS), Darwin)
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NEEDS_LIBCRYPTO = 1
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endif
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ifeq ($(NEEDS_LIBCRYPTO), 1)
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MOLD_CXXFLAGS += $(shell $(PKG_CONFIG) --cflags-only-I openssl)
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MOLD_LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L openssl) -lcrypto
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endif
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# '-latomic' flag is needed building on riscv64 system
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# RV32 system doesn't tested yet
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# seems like '-atomic' would be better but not working.
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ifeq ($(ARCH), riscv64)
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MOLD_LDFLAGS += -latomic
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endif
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# -Wc++11-narrowing is a fatal error on Android, so disable it.
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ifeq ($(IS_ANDROID), 1)
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MOLD_CXXFLAGS += -Wno-c++11-narrowing
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endif
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ifeq ($(OS), Linux)
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MOLD_WRAPPER_LDFLAGS = -Wl,-push-state -Wl,-no-as-needed -ldl -Wl,-pop-state
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endif
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DEPFLAGS = -MT $@ -MMD -MP -MF out/$*.d
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all: mold mold-wrapper.so
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-include $(SRCS:%.cc=out/%.d)
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mold: $(OBJS) $(MIMALLOC_LIB) $(TBB_LIB)
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$(CXX) $(OBJS) -o $@ $(MOLD_LDFLAGS) $(LDFLAGS)
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ln -sf mold ld
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ln -sf mold ld64.mold
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mold-wrapper.so: elf/mold-wrapper.c
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$(CC) $(DEPFLAGS) $(CFLAGS) -fPIC -shared -o $@ $< $(MOLD_WRAPPER_LDFLAGS) $(LDFLAGS)
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out/%.o: %.cc out/elf/.keep out/macho/.keep
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$(CXX) $(MOLD_CXXFLAGS) $(DEPFLAGS) $(CXXFLAGS) -c -o $@ $<
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out/elf/.keep out/macho/.keep:
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mkdir -p $(@D)
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touch $@
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$(MIMALLOC_LIB):
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mkdir -p out/mimalloc
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(cd out/mimalloc; CFLAGS=-DMI_USE_ENVIRON=0 cmake -G'Unix Makefiles' ../../third-party/mimalloc)
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$(MAKE) -C out/mimalloc mimalloc-static
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$(TBB_LIB):
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mkdir -p out/tbb
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(cd out/tbb; cmake -G'Unix Makefiles' -DBUILD_SHARED_LIBS=OFF -DTBB_TEST=OFF -DCMAKE_CXX_FLAGS="$(CXXFLAGS) -D__TBB_DYNAMIC_LOAD_ENABLED=0" -DTBB_STRICT=OFF ../../third-party/tbb)
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$(MAKE) -C out/tbb tbb
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(cd out/tbb; ln -sf *_relwithdebinfo libs)
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test tests check: all
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ifeq ($(OS), Darwin)
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$(MAKE) -C test -f Makefile.darwin --no-print-directory
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else
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$(MAKE) -C test -f Makefile.linux --no-print-directory --output-sync
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endif
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@if test -t 1; then \
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printf '\e[32mPassed all tests\e[0m\n'; \
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else \
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echo 'Passed all tests'; \
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fi
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test-x86-64: all
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@echo x86_64
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CC=x86_64-linux-gnu-gcc CXX=x86_64-linux-gnu-g++ GCC=x86_64-linux-gnu-gcc GXX=x86_64-linux-gnu-g++ OBJDUMP=x86_64-linux-gnu-objdump MACHINE=x86_64 QEMU='qemu-x86_64 -L /usr/x86_64-linux-gnu' $(MAKE) test
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test-i386: all
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@echo i386
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CC=i686-linux-gnu-gcc CXX=i686-linux-gnu-g++ GCC=i686-linux-gnu-gcc GXX=i686-linux-gnu-g++ OBJDUMP=x86_64-linux-gnu-objdump MACHINE=i386 QEMU='qemu-i386 -L /usr/i686-linux-gnu' $(MAKE) test
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test-arm64: all
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@echo arm64
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CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++ GCC=aarch64-linux-gnu-gcc GXX=aarch64-linux-gnu-g++ OBJDUMP=aarch64-linux-gnu-objdump MACHINE=aarch64 QEMU='qemu-aarch64 -L /usr/aarch64-linux-gnu' $(MAKE) test
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test-arm32: all
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@echo arm
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CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ GCC=arm-linux-gnueabihf-gcc GXX=arm-linux-gnueabihf-g++ OBJDUMP=arm-linux-gnueabihf-objdump MACHINE=arm QEMU='qemu-arm -L /usr/arm-linux-gnueabihf' $(MAKE) test
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test-riscv64: all
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@echo riscv64
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CC=riscv64-linux-gnu-gcc CXX=riscv64-linux-gnu-g++ GCC=riscv64-linux-gnu-gcc GXX=riscv64-linux-gnu-g++ OBJDUMP=riscv64-linux-gnu-objdump MACHINE=riscv64 QEMU='qemu-riscv64 -L /usr/riscv64-linux-gnu' $(MAKE) test
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test-all:
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$(MAKE) test-x86-64
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$(MAKE) test-i386
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$(MAKE) test-arm64
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$(MAKE) test-arm32
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$(MAKE) test-riscv64
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install: all
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$(INSTALL) -d $D$(BINDIR)
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$(INSTALL_PROGRAM) mold $D$(BINDIR)
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$(STRIP) $D$(BINDIR)/mold
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$(INSTALL) -d $D$(LIBDIR)/mold
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$(INSTALL_DATA) mold-wrapper.so $D$(LIBDIR)/mold
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$(STRIP) $D$(LIBDIR)/mold/mold-wrapper.so
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$(INSTALL) -d $D$(LIBEXECDIR)/mold
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# We want to make a symblink with a relative path, so that users can
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# move the entire directory to other place without breaking the reference.
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# GNU ln supports `--relative` to do that, but that's not supported by
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# non-GNU systems. So we use Python to compute a relative path.
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ln -sf `python3 -c "import os.path; print(os.path.relpath('$(BINDIR)/mold', '$(LIBEXECDIR)/mold'))"` $D$(LIBEXECDIR)/mold/ld
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$(INSTALL) -d $D$(MANDIR)/man1
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$(INSTALL_DATA) docs/mold.1 $D$(MANDIR)/man1
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ln -sf mold $D$(BINDIR)/ld.mold
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ln -sf mold $D$(BINDIR)/ld64.mold
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uninstall:
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rm -f $D$(BINDIR)/mold $D$(BINDIR)/ld.mold $D$(BINDIR)/ld64.mold
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rm -f $D$(MANDIR)/man1/mold.1
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rm -rf $D$(LIBDIR)/mold
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clean:
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rm -rf *~ mold mold-wrapper.so out ld ld64.mold mold-*-linux.tar.gz
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.PHONY: all test tests check clean test-x86-64 test-i386 test-arm64 test-arm32 test-riscv64 test-all
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