rust/mk/llvm.mk

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# Copyright 2012 The Rust Project Developers. See the COPYRIGHT
# file at the top-level directory of this distribution and at
# http://rust-lang.org/COPYRIGHT.
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms.
ifdef CFG_ENABLE_FAST_MAKE
LLVM_DEPS := $(S)/.gitmodules
else
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# This is just a rough approximation of LLVM deps
LLVM_DEPS_SRC=$(call rwildcard,$(CFG_LLVM_SRC_DIR)lib,*cpp *hpp)
LLVM_DEPS_INC=$(call rwildcard,$(CFG_LLVM_SRC_DIR)include,*cpp *hpp)
LLVM_DEPS=$(LLVM_DEPS_SRC) $(LLVM_DEPS_INC)
endif
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define DEF_LLVM_RULES
# If CFG_LLVM_ROOT is defined then we don't build LLVM ourselves
ifeq ($(CFG_LLVM_ROOT),)
LLVM_STAMP_$(1) = $$(CFG_LLVM_BUILD_DIR_$(1))/llvm-auto-clean-stamp
$$(LLVM_CONFIG_$(1)): $$(LLVM_DEPS) $$(LLVM_STAMP_$(1))
@$$(call E, make: llvm)
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$$(Q)$$(MAKE) -C $$(CFG_LLVM_BUILD_DIR_$(1)) $$(CFG_LLVM_BUILD_ENV_$(1)) ONLY_TOOLS="$$(LLVM_TOOLS)"
$$(Q)touch $$(LLVM_CONFIG_$(1))
endif
# This is used to independently force an LLVM clean rebuild
# when we changed something not otherwise captured by builtin
# dependencies. In these cases, commit a change that touches
# the stamp in the source dir.
$$(LLVM_STAMP_$(1)): $(S)src/rustllvm/llvm-auto-clean-trigger
@$$(call E, make: cleaning llvm)
$(Q)touch $$@.start_time
$(Q)$(MAKE) clean-llvm$(1)
@$$(call E, make: done cleaning llvm)
touch -r $$@.start_time $$@ && rm $$@.start_time
ifeq ($$(CFG_ENABLE_LLVM_STATIC_STDCPP),1)
LLVM_STDCPP_RUSTFLAGS_$(1) = -L "$$(dir $$(shell $$(CC_$(1)) $$(CFG_GCCISH_CFLAGS_$(1)) \
-print-file-name=libstdc++.a))"
else
LLVM_STDCPP_RUSTFLAGS_$(1) =
endif
# LLVM linkage:
LLVM_LINKAGE_PATH_$(1):=$$(abspath $$(RT_OUTPUT_DIR_$(1))/llvmdeps.rs)
$$(LLVM_LINKAGE_PATH_$(1)): $(S)src/etc/mklldeps.py $$(LLVM_CONFIG_$(1))
$(Q)$(CFG_PYTHON) "$$<" "$$@" "$$(LLVM_COMPONENTS)" "$$(CFG_ENABLE_LLVM_STATIC_STDCPP)" \
$$(LLVM_CONFIG_$(1))
endef
$(foreach host,$(CFG_HOST), \
$(eval $(call DEF_LLVM_RULES,$(host))))
$(foreach host,$(CFG_HOST), \
$(eval LLVM_CONFIGS := $(LLVM_CONFIGS) $(LLVM_CONFIG_$(host))))
# This can't be done in target.mk because it's included before this file.
define LLVM_LINKAGE_DEPS
$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.rustc_llvm: $$(LLVM_LINKAGE_PATH_$(3))
endef
$(foreach source,$(CFG_HOST), \
$(foreach target,$(CFG_TARGET), \
$(eval $(call LLVM_LINKAGE_DEPS,0,$(target),$(source))) \
$(eval $(call LLVM_LINKAGE_DEPS,1,$(target),$(source))) \
$(eval $(call LLVM_LINKAGE_DEPS,2,$(target),$(source))) \
$(eval $(call LLVM_LINKAGE_DEPS,3,$(target),$(source)))))