mk/platform.mk

   1 # Copyright 2012-2015 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 # Create variables HOST_<triple> containing the host part
  13 # of each target triple.  For example, the triple i686-darwin-macos
  14 # would create a variable HOST_i686-darwin-macos with the value
  15 # i386.
  16 define DEF_HOST_VAR
  17   HOST_$(1) = $(subst i686,i386,$(word 1,$(subst -, ,$(1))))
  18 endef
  19 $(foreach t,$(CFG_TARGET),$(eval $(call DEF_HOST_VAR,$(t))))
  20 $(foreach t,$(CFG_TARGET),$(info cfg: host for $(t) is $(HOST_$(t))))
  21
  22 # Ditto for OSTYPE
  23 define DEF_OSTYPE_VAR
  24   OSTYPE_$(1) = $(subst $(firstword $(subst -, ,$(1)))-,,$(1))
  25 endef
  26 $(foreach t,$(CFG_TARGET),$(eval $(call DEF_OSTYPE_VAR,$(t))))
  27 $(foreach t,$(CFG_TARGET),$(info cfg: os for $(t) is $(OSTYPE_$(t))))
  28
  29 # On Darwin, we need to run dsymutil so the debugging information ends
  30 # up in the right place.  On other platforms, it automatically gets
  31 # embedded into the executable, so use a no-op command.
  32 CFG_DSYMUTIL := true
  33
  34 # Hack: not sure how to test if a file exists in make other than this
  35 OS_SUPP = $(patsubst %,--suppressions=%, \
  36       $(wildcard $(CFG_SRC_DIR)src/etc/$(CFG_OSTYPE).supp*))
  37
  38 ifdef CFG_DISABLE_OPTIMIZE_CXX
  39   $(info cfg: disabling C++ optimization (CFG_DISABLE_OPTIMIZE_CXX))
  40   CFG_GCCISH_CFLAGS += -O0
  41 else
  42   CFG_GCCISH_CFLAGS += -O2
  43 endif
  44
  45 # The soname thing is for supporting a statically linked jemalloc.
  46 # see https://blog.mozilla.org/jseward/2012/06/05/valgrind-now-supports-jemalloc-builds-directly/
  47 ifdef CFG_VALGRIND
  48   CFG_VALGRIND += --error-exitcode=100 \
  49                   --fair-sched=try \
  50                   --quiet \
  51                   --soname-synonyms=somalloc=NONE \
  52                   --suppressions=$(CFG_SRC_DIR)src/etc/x86.supp \
  53                   $(OS_SUPP)
  54   ifdef CFG_ENABLE_HELGRIND
  55     CFG_VALGRIND += --tool=helgrind
  56   else
  57     CFG_VALGRIND += --tool=memcheck \
  58                     --leak-check=full
  59   endif
  60 endif
  61
  62 # If we actually want to run Valgrind on a given platform, set this variable
  63 define DEF_GOOD_VALGRIND
  64   ifeq ($(OSTYPE_$(1)),unknown-linux-gnu)
  65     GOOD_VALGRIND_$(1) = 1
  66   endif
  67   ifneq (,$(filter $(OSTYPE_$(1)),darwin freebsd))
  68     ifeq (HOST_$(1),x86_64)
  69       GOOD_VALGRIND_$(1) = 1
  70     endif
  71   endif
  72 endef
  73 $(foreach t,$(CFG_TARGET),$(eval $(call DEF_GOOD_VALGRIND,$(t))))
  74 $(foreach t,$(CFG_TARGET),$(info cfg: good valgrind for $(t) is $(GOOD_VALGRIND_$(t))))
  75
  76 ifneq ($(findstring linux,$(CFG_OSTYPE)),)
  77   ifdef CFG_PERF
  78     ifneq ($(CFG_PERF_WITH_LOGFD),)
  79         CFG_PERF_TOOL := $(CFG_PERF) stat -r 3 --log-fd 2
  80     else
  81         CFG_PERF_TOOL := $(CFG_PERF) stat -r 3
  82     endif
  83   else
  84     ifdef CFG_VALGRIND
  85       CFG_PERF_TOOL := \
  86         $(CFG_VALGRIND) --tool=cachegrind --cache-sim=yes --branch-sim=yes
  87     else
  88       CFG_PERF_TOOL := /usr/bin/time --verbose
  89     endif
  90   endif
  91 endif
  92
  93 # These flags will cause the compiler to produce a .d file
  94 # next to the .o file that lists header deps.
  95 CFG_DEPEND_FLAGS = -MMD -MP -MT $(1) -MF $(1:%.o=%.d)
  96
  97 AR := ar
  98
  99 define SET_FROM_CFG
 100   ifdef CFG_$(1)
 101     ifeq ($(origin $(1)),undefined)
 102       $$(info cfg: using $(1)=$(CFG_$(1)) (CFG_$(1)))
 103       $(1)=$(CFG_$(1))
 104     endif
 105     ifeq ($(origin $(1)),default)
 106       $$(info cfg: using $(1)=$(CFG_$(1)) (CFG_$(1)))
 107       $(1)=$(CFG_$(1))
 108     endif
 109   endif
 110 endef
 111
 112 $(foreach cvar,CC CXX CPP CFLAGS CXXFLAGS CPPFLAGS, \
 113   $(eval $(call SET_FROM_CFG,$(cvar))))
 114
 115 CFG_RLIB_GLOB=lib$(1)-*.rlib
 116
 117 include $(wildcard $(CFG_SRC_DIR)mk/cfg/*.mk)
 118
 119 # The -Qunused-arguments sidesteps spurious warnings from clang
 120 define FILTER_FLAGS
 121   ifeq ($$(CFG_USING_CLANG),1)
 122     ifneq ($(findstring clang,$$(shell $(CC_$(1)) -v)),)
 123       CFG_GCCISH_CFLAGS_$(1) += -Qunused-arguments
 124       CFG_GCCISH_CXXFLAGS_$(1) += -Qunused-arguments
 125     endif
 126   endif
 127 endef
 128
 129 $(foreach target,$(CFG_TARGET), \
 130   $(eval $(call FILTER_FLAGS,$(target))))
 131
 132
 133 ifeq ($(CFG_CCACHE_CPP2),1)
 134   CCACHE_CPP2=1
 135   export CCACHE_CPP
 136 endif
 137
 138 ifdef CFG_CCACHE_BASEDIR
 139   CCACHE_BASEDIR=$(CFG_CCACHE_BASEDIR)
 140   export CCACHE_BASEDIR
 141 endif
 142
 143 FIND_COMPILER = $(word 1,$(1:ccache=))
 144
 145 define CFG_MAKE_TOOLCHAIN
 146   # Prepend the tools with their prefix if cross compiling
 147   ifneq ($(CFG_BUILD),$(1))
 148        CC_$(1)=$(CROSS_PREFIX_$(1))$(CC_$(1))
 149        CXX_$(1)=$(CROSS_PREFIX_$(1))$(CXX_$(1))
 150        CPP_$(1)=$(CROSS_PREFIX_$(1))$(CPP_$(1))
 151        AR_$(1)=$(CROSS_PREFIX_$(1))$(AR_$(1))
 152        RUSTC_CROSS_FLAGS_$(1)=-C linker=$$(call FIND_COMPILER,$$(CC_$(1))) \
 153            -C ar=$$(call FIND_COMPILER,$$(AR_$(1))) $(RUSTC_CROSS_FLAGS_$(1))
 154
 155        RUSTC_FLAGS_$(1)=$$(RUSTC_CROSS_FLAGS_$(1)) $(RUSTC_FLAGS_$(1))
 156   endif
 157
 158   CFG_COMPILE_C_$(1) = $$(CC_$(1)) \
 159         $$(CFG_GCCISH_CFLAGS) \
 160         $$(CFG_GCCISH_CFLAGS_$(1)) \
 161         $$(CFG_DEPEND_FLAGS) \
 162         -c -o $$(1) $$(2)
 163   CFG_LINK_C_$(1) = $$(CC_$(1)) \
 164         $$(CFG_GCCISH_LINK_FLAGS) -o $$(1) \
 165         $$(CFG_GCCISH_LINK_FLAGS_$(1)) \
 166         $$(CFG_GCCISH_DEF_FLAG_$(1))$$(3) $$(2) \
 167         $$(call CFG_INSTALL_NAME_$(1),$$(4))
 168   CFG_COMPILE_CXX_$(1) = $$(CXX_$(1)) \
 169         $$(CFG_GCCISH_CFLAGS) \
 170         $$(CFG_GCCISH_CXXFLAGS) \
 171         $$(CFG_GCCISH_CFLAGS_$(1)) \
 172         $$(CFG_GCCISH_CXXFLAGS_$(1)) \
 173         $$(CFG_DEPEND_FLAGS) \
 174         -c -o $$(1) $$(2)
 175   CFG_LINK_CXX_$(1) = $$(CXX_$(1)) \
 176         $$(CFG_GCCISH_LINK_FLAGS) -o $$(1) \
 177         $$(CFG_GCCISH_LINK_FLAGS_$(1)) \
 178         $$(CFG_GCCISH_DEF_FLAG_$(1))$$(3) $$(2) \
 179         $$(call CFG_INSTALL_NAME_$(1),$$(4))
 180
 181   ifeq ($$(findstring $(HOST_$(1)),arm aarch64 mips mipsel powerpc),)
 182
 183   # On Bitrig, we need the relocation model to be PIC for everything
 184   ifeq (,$(filter $(OSTYPE_$(1)),bitrig))
 185     LLVM_MC_RELOCATION_MODEL="pic"
 186   else
 187     LLVM_MC_RELOCATION_MODEL="default"
 188   endif
 189
 190   # We're using llvm-mc as our assembler because it supports
 191   # .cfi pseudo-ops on mac
 192   CFG_ASSEMBLE_$(1)=$$(CPP_$(1)) -E $$(CFG_DEPEND_FLAGS) $$(2) | \
 193                     $$(LLVM_MC_$$(CFG_BUILD)) \
 194                     -assemble \
 195                     -relocation-model=$$(LLVM_MC_RELOCATION_MODEL) \
 196                     -filetype=obj \
 197                     -triple=$(1) \
 198                     -o=$$(1)
 199   else
 200
 201   # For the ARM, AARCH64, MIPS and POWER crosses, use the toolchain assembler
 202   # FIXME: We should be able to use the LLVM assembler
 203   CFG_ASSEMBLE_$(1)=$$(CC_$(1)) $$(CFG_GCCISH_CFLAGS_$(1)) \
 204                    $$(CFG_DEPEND_FLAGS) $$(2) -c -o $$(1)
 205
 206   endif
 207
 208 endef
 209
 210 $(foreach target,$(CFG_TARGET), \
 211   $(eval $(call CFG_MAKE_TOOLCHAIN,$(target))))