mk/llvm.mk

   1 # Copyright 2012 The Rust Project Developers. See the COPYRIGHT
   2 # file at the top-level directory of this distribution and at
   3 # http://rust-lang.org/COPYRIGHT.
   4 #
   5 # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 # option. This file may not be copied, modified, or distributed
   9 # except according to those terms.
  10
  11
  12 ifdef CFG_ENABLE_FAST_MAKE
  13 LLVM_DEPS := $(S)/.gitmodules
  14 else
  15
  16 # This is just a rough approximation of LLVM deps
  17 LLVM_DEPS_SRC=$(call rwildcard,$(CFG_LLVM_SRC_DIR)lib,*cpp *hpp)
  18 LLVM_DEPS_INC=$(call rwildcard,$(CFG_LLVM_SRC_DIR)include,*cpp *hpp)
  19 LLVM_DEPS=$(LLVM_DEPS_SRC) $(LLVM_DEPS_INC)
  20 endif
  21
  22 ifdef CFG_DISABLE_OPTIMIZE_LLVM
  23 LLVM_BUILD_CONFIG_MODE := Debug
  24 else
  25 LLVM_BUILD_CONFIG_MODE := Release
  26 endif
  27
  28 define DEF_LLVM_RULES
  29
  30 # If CFG_LLVM_ROOT is defined then we don't build LLVM ourselves
  31 ifeq ($(CFG_LLVM_ROOT),)
  32
  33 LLVM_STAMP_$(1) = $$(CFG_LLVM_BUILD_DIR_$(1))/llvm-auto-clean-stamp
  34
  35 ifeq ($$(findstring msvc,$(1)),msvc)
  36
  37 $$(LLVM_CONFIG_$(1)): $$(LLVM_DEPS) $$(LLVM_STAMP_$(1))
  38         @$$(call E, cmake: llvm)
  39         $$(Q)$$(CFG_CMAKE) --build $$(CFG_LLVM_BUILD_DIR_$(1)) \
  40                 --config $$(LLVM_BUILD_CONFIG_MODE)
  41         $$(Q)touch $$(LLVM_CONFIG_$(1))
  42
  43 clean-llvm$(1):
  44
  45 else
  46
  47 $$(LLVM_CONFIG_$(1)): $$(LLVM_DEPS) $$(LLVM_STAMP_$(1))
  48         @$$(call E, make: llvm)
  49         $$(Q)$$(MAKE) -C $$(CFG_LLVM_BUILD_DIR_$(1)) $$(CFG_LLVM_BUILD_ENV_$(1)) ONLY_TOOLS="$$(LLVM_TOOLS)"
  50         $$(Q)touch $$(LLVM_CONFIG_$(1))
  51
  52 clean-llvm$(1):
  53         $$(Q)$$(MAKE) -C $$(CFG_LLVM_BUILD_DIR_$(1)) clean
  54
  55 endif
  56
  57 else
  58 clean-llvm$(1):
  59 endif
  60
  61 $$(LLVM_AR_$(1)): $$(LLVM_CONFIG_$(1))
  62
  63 # This is used to independently force an LLVM clean rebuild
  64 # when we changed something not otherwise captured by builtin
  65 # dependencies. In these cases, commit a change that touches
  66 # the stamp in the source dir.
  67 $$(LLVM_STAMP_$(1)): $(S)src/rustllvm/llvm-auto-clean-trigger
  68         @$$(call E, make: cleaning llvm)
  69         $(Q)touch $$@.start_time
  70         $(Q)$(MAKE) clean-llvm$(1)
  71         @$$(call E, make: done cleaning llvm)
  72         touch -r $$@.start_time $$@ && rm $$@.start_time
  73
  74 ifeq ($$(CFG_ENABLE_LLVM_STATIC_STDCPP),1)
  75 LLVM_STDCPP_RUSTFLAGS_$(1) = -L "$$(dir $$(shell $$(CC_$(1)) $$(CFG_GCCISH_CFLAGS_$(1)) \
  76                                         -print-file-name=libstdc++.a))"
  77 else
  78 LLVM_STDCPP_RUSTFLAGS_$(1) =
  79 endif
  80
  81
  82 # LLVM linkage:
  83 LLVM_LINKAGE_PATH_$(1):=$$(abspath $$(RT_OUTPUT_DIR_$(1))/llvmdeps.rs)
  84 $$(LLVM_LINKAGE_PATH_$(1)): $(S)src/etc/mklldeps.py $$(LLVM_CONFIG_$(1))
  85         $(Q)$(CFG_PYTHON) "$$<" "$$@" "$$(LLVM_COMPONENTS)" "$$(CFG_ENABLE_LLVM_STATIC_STDCPP)" \
  86                 $$(LLVM_CONFIG_$(1))
  87 endef
  88
  89 $(foreach host,$(CFG_HOST), \
  90  $(eval $(call DEF_LLVM_RULES,$(host))))
  91
  92 $(foreach host,$(CFG_HOST), \
  93  $(eval LLVM_CONFIGS := $(LLVM_CONFIGS) $(LLVM_CONFIG_$(host))))
  94
  95 # This can't be done in target.mk because it's included before this file.
  96 define LLVM_LINKAGE_DEPS
  97 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.rustc_llvm: $$(LLVM_LINKAGE_PATH_$(2))
  98 endef
  99
 100 $(foreach source,$(CFG_HOST), \
 101  $(foreach target,$(CFG_TARGET), \
 102   $(eval $(call LLVM_LINKAGE_DEPS,0,$(target),$(source))) \
 103   $(eval $(call LLVM_LINKAGE_DEPS,1,$(target),$(source))) \
 104   $(eval $(call LLVM_LINKAGE_DEPS,2,$(target),$(source))) \
 105   $(eval $(call LLVM_LINKAGE_DEPS,3,$(target),$(source)))))