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platform.mk
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platform.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.
# Create variables HOST_<triple> containing the host part
# of each target triple. For example, the triple i686-darwin-macos
# would create a variable HOST_i686-darwin-macos with the value
# i386.
define DEF_HOST_VAR
HOST_$(1) = $(subst i686,i386,$(word 1,$(subst -, ,$(1))))
endef
$(foreach t,$(CFG_TARGET),$(eval $(call DEF_HOST_VAR,$(t))))
$(foreach t,$(CFG_TARGET),$(info cfg: host for $(t) is $(HOST_$(t))))
# Ditto for OSTYPE
define DEF_OSTYPE_VAR
OSTYPE_$(1) = $(subst $(firstword $(subst -, ,$(1)))-,,$(1))
endef
$(foreach t,$(CFG_TARGET),$(eval $(call DEF_OSTYPE_VAR,$(t))))
$(foreach t,$(CFG_TARGET),$(info cfg: os for $(t) is $(OSTYPE_$(t))))
# On Darwin, we need to run dsymutil so the debugging information ends
# up in the right place. On other platforms, it automatically gets
# embedded into the executable, so use a no-op command.
CFG_DSYMUTIL := true
# Hack: not sure how to test if a file exists in make other than this
OS_SUPP = $(patsubst %,--suppressions=%, \
$(wildcard $(CFG_SRC_DIR)src/etc/$(CFG_OSTYPE).supp*))
ifdef CFG_DISABLE_OPTIMIZE_CXX
$(info cfg: disabling C++ optimization (CFG_DISABLE_OPTIMIZE_CXX))
CFG_GCCISH_CFLAGS += -O0
else
CFG_GCCISH_CFLAGS += -O2
endif
# The soname thing is for supporting a statically linked jemalloc.
# see https://blog.mozilla.org/jseward/2012/06/05/valgrind-now-supports-jemalloc-builds-directly/
ifdef CFG_VALGRIND
CFG_VALGRIND += --error-exitcode=100 \
--soname-synonyms=somalloc=NONE \
--quiet \
--suppressions=$(CFG_SRC_DIR)src/etc/x86.supp \
$(OS_SUPP)
ifdef CFG_ENABLE_HELGRIND
CFG_VALGRIND += --tool=helgrind
else
CFG_VALGRIND += --tool=memcheck \
--leak-check=full
endif
endif
# If we actually want to run Valgrind on a given platform, set this variable
define DEF_GOOD_VALGRIND
ifeq ($(OSTYPE_$(1)),unknown-linux-gnu)
GOOD_VALGRIND_$(1) = 1
endif
ifneq (,$(filter $(OSTYPE_$(1)),darwin freebsd))
ifeq (HOST_$(1),x86_64)
GOOD_VALGRIND_$(1) = 1
endif
endif
endef
$(foreach t,$(CFG_TARGET),$(eval $(call DEF_GOOD_VALGRIND,$(t))))
$(foreach t,$(CFG_TARGET),$(info cfg: good valgrind for $(t) is $(GOOD_VALGRIND_$(t))))
ifneq ($(findstring linux,$(CFG_OSTYPE)),)
ifdef CFG_PERF
ifneq ($(CFG_PERF_WITH_LOGFD),)
CFG_PERF_TOOL := $(CFG_PERF) stat -r 3 --log-fd 2
else
CFG_PERF_TOOL := $(CFG_PERF) stat -r 3
endif
else
ifdef CFG_VALGRIND
CFG_PERF_TOOL := \
$(CFG_VALGRIND) --tool=cachegrind --cache-sim=yes --branch-sim=yes
else
CFG_PERF_TOOL := /usr/bin/time --verbose
endif
endif
endif
# These flags will cause the compiler to produce a .d file
# next to the .o file that lists header deps.
CFG_DEPEND_FLAGS = -MMD -MP -MT $(1) -MF $(1:%.o=%.d)
AR := ar
define SET_FROM_CFG
ifdef CFG_$(1)
ifeq ($(origin $(1)),undefined)
$$(info cfg: using $(1)=$(CFG_$(1)) (CFG_$(1)))
$(1)=$(CFG_$(1))
endif
ifeq ($(origin $(1)),default)
$$(info cfg: using $(1)=$(CFG_$(1)) (CFG_$(1)))
$(1)=$(CFG_$(1))
endif
endif
endef
$(foreach cvar,CC CXX CPP CFLAGS CXXFLAGS CPPFLAGS, \
$(eval $(call SET_FROM_CFG,$(cvar))))
CFG_RLIB_GLOB=lib$(1)-*.rlib
include $(wildcard $(CFG_SRC_DIR)mk/cfg/*)
# The -Qunused-arguments sidesteps spurious warnings from clang
define FILTER_FLAGS
ifeq ($$(CFG_USING_CLANG),1)
ifneq ($(findstring clang,$$(shell $(CC_$(1)) -v)),)
CFG_GCCISH_CFLAGS_$(1) += -Qunused-arguments
CFG_GCCISH_CXXFLAGS_$(1) += -Qunused-arguments
endif
endif
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call FILTER_FLAGS,$(target))))
ifeq ($(CFG_CCACHE_CPP2),1)
CCACHE_CPP2=1
export CCACHE_CPP
endif
ifdef CFG_CCACHE_BASEDIR
CCACHE_BASEDIR=$(CFG_CCACHE_BASEDIR)
export CCACHE_BASEDIR
endif
FIND_COMPILER = $(word 1,$(1:ccache=))
define CFG_MAKE_TOOLCHAIN
# Prepend the tools with their prefix if cross compiling
ifneq ($(CFG_BUILD),$(1))
CC_$(1)=$(CROSS_PREFIX_$(1))$(CC_$(1))
CXX_$(1)=$(CROSS_PREFIX_$(1))$(CXX_$(1))
CPP_$(1)=$(CROSS_PREFIX_$(1))$(CPP_$(1))
AR_$(1)=$(CROSS_PREFIX_$(1))$(AR_$(1))
RUSTC_CROSS_FLAGS_$(1)=-C linker=$$(call FIND_COMPILER,$$(CC_$(1))) \
-C ar=$$(call FIND_COMPILER,$$(AR_$(1))) $(RUSTC_CROSS_FLAGS_$(1))
RUSTC_FLAGS_$(1)=$$(RUSTC_CROSS_FLAGS_$(1)) $(RUSTC_FLAGS_$(1))
endif
CFG_COMPILE_C_$(1) = $$(CC_$(1)) \
$$(CFG_GCCISH_CFLAGS) \
$$(CFG_GCCISH_CFLAGS_$(1)) \
$$(CFG_DEPEND_FLAGS) \
-c -o $$(1) $$(2)
CFG_LINK_C_$(1) = $$(CC_$(1)) \
$$(CFG_GCCISH_LINK_FLAGS) -o $$(1) \
$$(CFG_GCCISH_LINK_FLAGS_$(1)) \
$$(CFG_GCCISH_DEF_FLAG_$(1))$$(3) $$(2) \
$$(call CFG_INSTALL_NAME_$(1),$$(4))
CFG_COMPILE_CXX_$(1) = $$(CXX_$(1)) \
$$(CFG_GCCISH_CFLAGS) \
$$(CFG_GCCISH_CXXFLAGS) \
$$(CFG_GCCISH_CFLAGS_$(1)) \
$$(CFG_GCCISH_CXXFLAGS_$(1)) \
$$(CFG_DEPEND_FLAGS) \
-c -o $$(1) $$(2)
CFG_LINK_CXX_$(1) = $$(CXX_$(1)) \
$$(CFG_GCCISH_LINK_FLAGS) -o $$(1) \
$$(CFG_GCCISH_LINK_FLAGS_$(1)) \
$$(CFG_GCCISH_DEF_FLAG_$(1))$$(3) $$(2) \
$$(call CFG_INSTALL_NAME_$(1),$$(4))
ifeq ($$(findstring $(HOST_$(1)),arm mips mipsel),)
# We're using llvm-mc as our assembler because it supports
# .cfi pseudo-ops on mac
CFG_ASSEMBLE_$(1)=$$(CPP_$(1)) -E $$(CFG_DEPEND_FLAGS) $$(2) | \
$$(LLVM_MC_$$(CFG_BUILD)) \
-assemble \
-filetype=obj \
-triple=$(1) \
-o=$$(1)
else
# For the ARM and MIPS crosses, use the toolchain assembler
# FIXME: We should be able to use the LLVM assembler
CFG_ASSEMBLE_$(1)=$$(CC_$(1)) $$(CFG_GCCISH_CFLAGS_$(1)) \
$$(CFG_DEPEND_FLAGS) $$(2) -c -o $$(1)
endif
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call CFG_MAKE_TOOLCHAIN,$(target))))