mirror of
https://github.com/rust-lang/rust.git
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9fbba7b2ee
This commit alters the build process of the compiler to build a static librustrt.a instead of a dynamic version. This means that we can stop distributing librustrt as well as default linking against it in the compiler. This also means that if you attempt to build rust code without libstd, it will no longer work if there are any landing pads in play. The reason for this is that LLVM and rustc will emit calls to the various upcalls in librustrt used to manage exception handling. In theory we could split librustrt into librustrt and librustupcall. We would then distribute librustupcall and link to it for all programs using landing pads, but I would rather see just one librustrt artifact and simplify the build process. The major benefit of doing this is that building a static rust library for use in embedded situations all of a sudden just became a whole lot more feasible. Closes #3361
285 lines
9.4 KiB
Makefile
285 lines
9.4 KiB
Makefile
# This is a procedure to define the targets for building
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# the runtime.
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#
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# Argument 1 is the target triple.
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#
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# This is not really the right place to explain this, but
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# for those of you who are not Makefile gurus, let me briefly
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# cover the $ expansion system in use here, because it
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# confused me for a while! The variable DEF_RUNTIME_TARGETS
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# will be defined once and then expanded with different
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# values substituted for $(1) each time it is called.
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# That resulting text is then eval'd.
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#
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# For most variables, you could use a single $ sign. The result
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# is that the substitution would occur when the CALL occurs,
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# I believe. The problem is that the automatic variables $< and $@
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# need to be expanded-per-rule. Therefore, for those variables at
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# least, you need $$< and $$@ in the variable text. This way, after
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# the CALL substitution occurs, you will have $< and $@. This text
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# will then be evaluated, and all will work as you like.
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#
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# Reader beware, this explanantion could be wrong, but it seems to
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# fit the experimental data (i.e., I was able to get the system
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# working under these assumptions).
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# when we're doing a snapshot build, we intentionally degrade as many
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# features in libuv and the runtime as possible, to ease portability.
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SNAP_DEFINES:=
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ifneq ($(strip $(findstring snap,$(MAKECMDGOALS))),)
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SNAP_DEFINES=-DRUST_SNAPSHOT
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endif
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define DEF_LIBUV_ARCH_VAR
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LIBUV_ARCH_$(1) = $$(subst i386,ia32,$$(subst x86_64,x64,$$(HOST_$(1))))
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endef
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$(foreach t,$(CFG_TARGET),$(eval $(call DEF_LIBUV_ARCH_VAR,$(t))))
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ifdef CFG_ENABLE_FAST_MAKE
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LIBUV_DEPS := $(S)/.gitmodules
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else
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LIBUV_DEPS := $(wildcard \
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$(S)src/libuv/* \
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$(S)src/libuv/*/* \
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$(S)src/libuv/*/*/* \
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$(S)src/libuv/*/*/*/*)
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endif
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LIBUV_NO_LOAD = run-benchmarks.target.mk run-tests.target.mk \
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uv_dtrace_header.target.mk uv_dtrace_provider.target.mk
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export PYTHONPATH := $(PYTHONPATH):$(S)src/gyp/pylib
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define DEF_RUNTIME_TARGETS
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######################################################################
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# Runtime (C++) library variables
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######################################################################
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# $(1) is the target triple
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# $(2) is the stage number
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RUNTIME_CFLAGS_$(1)_$(2) = -D_RUST_STAGE$(2)
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RUNTIME_CXXFLAGS_$(1)_$(2) = -D_RUST_STAGE$(2)
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# XXX: Like with --cfg stage0, pass the defines for stage1 to the stage0
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# build of non-build-triple host compilers
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ifeq ($(2),0)
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ifneq ($(strip $(CFG_BUILD)),$(strip $(1)))
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RUNTIME_CFLAGS_$(1)_$(2) = -D_RUST_STAGE1
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RUNTIME_CXXFLAGS_$(1)_$(2) = -D_RUST_STAGE1
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endif
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endif
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RUNTIME_CXXS_$(1)_$(2) := \
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rt/rust_cxx_glue.cpp
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RUNTIME_CS_$(1)_$(2) := \
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rt/rust_builtin.c \
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rt/rust_upcall.c \
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rt/miniz.c \
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rt/rust_android_dummy.c \
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rt/rust_test_helpers.c
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# stage0 remove this after the next snapshot
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%.cpp:
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@touch tmp/foo.o
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RUNTIME_S_$(1)_$(2) := rt/arch/$$(HOST_$(1))/_context.S \
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rt/arch/$$(HOST_$(1))/record_sp.S
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RT_BUILD_DIR_$(1)_$(2) := $$(RT_OUTPUT_DIR_$(1))/stage$(2)
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RUNTIME_DEF_$(1)_$(2) := $$(RT_OUTPUT_DIR_$(1))/rustrt$$(CFG_DEF_SUFFIX_$(1))
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RUNTIME_INCS_$(1)_$(2) := -I $$(S)src/rt -I $$(S)src/rt/isaac -I $$(S)src/rt/uthash \
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-I $$(S)src/rt/arch/$$(HOST_$(1))
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RUNTIME_OBJS_$(1)_$(2) := $$(RUNTIME_CXXS_$(1)_$(2):rt/%.cpp=$$(RT_BUILD_DIR_$(1)_$(2))/%.o) \
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$$(RUNTIME_CS_$(1)_$(2):rt/%.c=$$(RT_BUILD_DIR_$(1)_$(2))/%.o) \
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$$(RUNTIME_S_$(1)_$(2):rt/%.S=$$(RT_BUILD_DIR_$(1)_$(2))/%.o)
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ALL_OBJ_FILES += $$(RUNTIME_OBJS_$(1)_$(2))
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MORESTACK_OBJS_$(1)_$(2) := $$(RT_BUILD_DIR_$(1)_$(2))/arch/$$(HOST_$(1))/morestack.o
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ALL_OBJ_FILES += $$(MORESTACK_OBJS_$(1)_$(2))
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$$(RT_BUILD_DIR_$(1)_$(2))/rust_cxx_glue.o: rt/rust_cxx_glue.cpp $$(MKFILE_DEPS)
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@$$(call E, compile: $$@)
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$$(Q)$$(call CFG_COMPILE_CXX_$(1), $$@, $$(RUNTIME_INCS_$(1)_$(2)) \
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$$(SNAP_DEFINES) $$(RUNTIME_CXXFLAGS_$(1)_$(2))) $$<
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$$(RT_BUILD_DIR_$(1)_$(2))/%.o: rt/%.c $$(MKFILE_DEPS)
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@$$(call E, compile: $$@)
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$$(Q)$$(call CFG_COMPILE_C_$(1), $$@, $$(RUNTIME_INCS_$(1)_$(2)) \
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$$(SNAP_DEFINES) $$(RUNTIME_CFLAGS_$(1)_$(2))) $$<
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$$(RT_BUILD_DIR_$(1)_$(2))/%.o: rt/%.S $$(MKFILE_DEPS) \
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$$(LLVM_CONFIG_$$(CFG_BUILD))
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@$$(call E, compile: $$@)
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$$(Q)$$(call CFG_ASSEMBLE_$(1),$$@,$$<)
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$$(RT_BUILD_DIR_$(1)_$(2))/arch/$$(HOST_$(1))/libmorestack.a: $$(MORESTACK_OBJS_$(1)_$(2))
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@$$(call E, link: $$@)
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$$(Q)$(AR_$(1)) rcs $$@ $$^
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$$(RT_BUILD_DIR_$(1)_$(2))/$(CFG_RUNTIME_$(1)): $$(RUNTIME_OBJS_$(1)_$(2)) $$(MKFILE_DEPS)
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@$$(call E, link: $$@)
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$$(Q)$(AR_$(1)) rcs $$@ $$(RUNTIME_OBJS_$(1)_$(2))
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# These could go in rt.mk or rustllvm.mk, they're needed for both.
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# This regexp has a single $$ escaped twice
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$(1)/%.bsd.def: %.def.in $$(MKFILE_DEPS)
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@$$(call E, def: $$@)
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$$(Q)echo "{" > $$@
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$$(Q)sed 's/.$$$$/&;/' $$< >> $$@
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$$(Q)echo "};" >> $$@
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$(1)/%.linux.def: %.def.in $$(MKFILE_DEPS)
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@$$(call E, def: $$@)
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$$(Q)echo "{" > $$@
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$$(Q)sed 's/.$$$$/&;/' $$< >> $$@
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$$(Q)echo "};" >> $$@
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$(1)/%.darwin.def: %.def.in $$(MKFILE_DEPS)
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@$$(call E, def: $$@)
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$$(Q)sed 's/^./_&/' $$< > $$@
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$(1)/%.android.def: %.def.in $$(MKFILE_DEPS)
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@$$(call E, def: $$@)
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$$(Q)echo "{" > $$@
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$$(Q)sed 's/.$$$$/&;/' $$< >> $$@
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$$(Q)echo "};" >> $$@
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$(1)/%.mingw32.def: %.def.in $$(MKFILE_DEPS)
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@$$(call E, def: $$@)
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$$(Q)echo LIBRARY $$* > $$@
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$$(Q)echo EXPORTS >> $$@
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$$(Q)sed 's/^./ &/' $$< >> $$@
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endef
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######################################################################
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# Runtime third party targets (libuv, jemalloc, etc.)
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#
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# These targets do not need to be built once per stage, so these
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# rules just build them once and then we're done with them.
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######################################################################
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define DEF_THIRD_PARTY_TARGETS
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# $(1) is the target triple
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RT_OUTPUT_DIR_$(1) := $(1)/rt
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ifeq ($$(CFG_WINDOWSY_$(1)), 1)
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LIBUV_OSTYPE_$(1) := win
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else ifeq ($(OSTYPE_$(1)), apple-darwin)
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LIBUV_OSTYPE_$(1) := mac
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else ifeq ($(OSTYPE_$(1)), unknown-freebsd)
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LIBUV_OSTYPE_$(1) := freebsd
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else ifeq ($(OSTYPE_$(1)), linux-androideabi)
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LIBUV_OSTYPE_$(1) := android
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LIBUV_ARGS_$(1) := PLATFORM=android host=android OS=linux
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else
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LIBUV_OSTYPE_$(1) := linux
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endif
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LIBUV_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),uv)
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LIBUV_LIB_$(1) := $$(RT_OUTPUT_DIR_$(1))/libuv/$$(LIBUV_NAME_$(1))
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LIBUV_MAKEFILE_$(1) := $$(CFG_BUILD_DIR)$$(RT_OUTPUT_DIR_$(1))/libuv/Makefile
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# libuv triggers a few warnings on some platforms
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LIBUV_CFLAGS_$(1) := $(subst -Werror,,$(CFG_GCCISH_CFLAGS_$(1)))
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$$(LIBUV_MAKEFILE_$(1)): $$(LIBUV_DEPS)
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(cd $(S)src/libuv/ && \
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$$(CFG_PYTHON) ./gyp_uv.py -f make -Dtarget_arch=$$(LIBUV_ARCH_$(1)) \
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-D ninja \
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-DOS=$$(LIBUV_OSTYPE_$(1)) \
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-Goutput_dir=$$(@D) --generator-output $$(@D))
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# Windows has a completely different build system for libuv because of mingw. In
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# theory when we support msvc then we should be using gyp's msvc output instead
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# of mingw's makefile for windows
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ifdef CFG_WINDOWSY_$(1)
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$$(LIBUV_LIB_$(1)): $$(LIBUV_DEPS)
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$$(Q)$$(MAKE) -C $$(S)src/libuv -f Makefile.mingw \
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LDFLAGS="$$(CFG_GCCISH_LINK_FLAGS_$(1))" \
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CC="$$(CC_$(1)) $$(LIBUV_CFLAGS_$(1)) $$(SNAP_DEFINES)" \
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CXX="$$(CXX_$(1))" \
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AR="$$(AR_$(1))" \
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V=$$(VERBOSE)
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$$(Q)cp $$(S)src/libuv/libuv.a $$@
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else
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$$(LIBUV_LIB_$(1)): $$(LIBUV_DEPS) $$(LIBUV_MAKEFILE_$(1))
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$$(Q)$$(MAKE) -C $$(@D) \
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CFLAGS="$$(LIBUV_CFLAGS_$(1)) $$(SNAP_DEFINES)" \
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LDFLAGS="$$(CFG_GCCISH_LINK_FLAGS_$(1))" \
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CC="$$(CC_$(1))" \
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CXX="$$(CXX_$(1))" \
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AR="$$(AR_$(1))" \
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$$(LIBUV_ARGS_$(1)) \
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builddir="." \
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BUILDTYPE=Release \
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NO_LOAD="$$(LIBUV_NO_LOAD)" \
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V=$$(VERBOSE)
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endif
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# libuv support functionality (extra C/C++ that we need to use libuv)
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UV_SUPPORT_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),uv_support)
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UV_SUPPORT_DIR_$(1) := $$(RT_OUTPUT_DIR_$(1))/uv_support
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UV_SUPPORT_LIB_$(1) := $$(UV_SUPPORT_DIR_$(1))/$$(UV_SUPPORT_NAME_$(1))
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UV_SUPPORT_CS_$(1) := rt/rust_uv.c
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UV_SUPPORT_OBJS_$(1) := $$(UV_SUPPORT_CS_$(1):rt/%.c=$$(UV_SUPPORT_DIR_$(1))/%.o)
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$$(UV_SUPPORT_DIR_$(1))/%.o: rt/%.c
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@$$(call E, compile: $$@)
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@mkdir -p $$(@D)
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$$(Q)$$(call CFG_COMPILE_C_$(1), $$@, \
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-I $$(S)src/libuv/include \
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$$(RUNTIME_CFLAGS_$(1))) $$<
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$$(UV_SUPPORT_LIB_$(1)): $$(UV_SUPPORT_OBJS_$(1))
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@$$(call E, link: $$@)
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$$(Q)$$(AR_$(1)) rcs $$@ $$^
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# sundown markdown library (used by librustdoc)
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SUNDOWN_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),sundown)
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SUNDOWN_DIR_$(1) := $$(RT_OUTPUT_DIR_$(1))/sundown
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SUNDOWN_LIB_$(1) := $$(SUNDOWN_DIR_$(1))/$$(SUNDOWN_NAME_$(1))
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SUNDOWN_CS_$(1) := rt/sundown/src/autolink.c \
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rt/sundown/src/buffer.c \
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rt/sundown/src/stack.c \
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rt/sundown/src/markdown.c \
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rt/sundown/html/houdini_href_e.c \
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rt/sundown/html/houdini_html_e.c \
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rt/sundown/html/html_smartypants.c \
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rt/sundown/html/html.c
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SUNDOWN_OBJS_$(1) := $$(SUNDOWN_CS_$(1):rt/%.c=$$(SUNDOWN_DIR_$(1))/%.o)
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$$(SUNDOWN_DIR_$(1))/%.o: rt/%.c
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@$$(call E, compile: $$@)
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@mkdir -p $$(@D)
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$$(Q)$$(call CFG_COMPILE_C_$(1), $$@, \
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-I $$(S)src/rt/sundown/src -I $$(S)src/rt/sundown/html \
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$$(RUNTIME_CFLAGS_$(1))) $$<
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$$(SUNDOWN_LIB_$(1)): $$(SUNDOWN_OBJS_$(1))
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@$$(call E, link: $$@)
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$$(Q)$$(AR_$(1)) rcs $$@ $$^
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endef
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# Instantiate template for all stages/targets
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$(foreach target,$(CFG_TARGET), \
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$(eval $(call DEF_THIRD_PARTY_TARGETS,$(target))))
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$(foreach stage,$(STAGES), \
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$(foreach target,$(CFG_TARGET), \
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$(eval $(call DEF_RUNTIME_TARGETS,$(target),$(stage)))))
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