rust/mk/platform.mk
Alex Crichton b980f22877 mk: Move disable-jemalloc logic into makefiles
The `--disable-jemalloc` configure option has a failure mode where it will
create a distribution that is not compatible with other compilers. For example
the nightly for Linux will assume that it will link to jemalloc by default as
an allocator for executable crates. If, however, a standard library is used
which was built via `./configure --disable-jemalloc` then this will fail
because the jemalloc crate wasn't built.

While this seems somewhat reasonable as a niche situation, the same mechanism is
used for disabling jemalloc for platforms that just don't support it. For
example if the rumprun target is compiled then the sibiling Linux target *also*
doesn't have jemalloc. This is currently a problem for our cross-build nightlies
which build many targets. If rumprun is also built, it will disable jemalloc for
all targets, which isn't desired.

This commit moves the platform-specific disabling of jemalloc as hardcoded logic
into the makefiles that is scoped per-platform. This way when configuring
multiple targets **without the `--disable-jemalloc` option specified** all
targets will get jemalloc as they should.
2016-02-25 21:05:59 -08:00

246 lines
7.5 KiB
Makefile

# Copyright 2012-2015 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) = $(patsubst i%86,i386,$(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
$(info cfg: disabling C++ optimization (CFG_DISABLE_OPTIMIZE_CXX))
CFG_GCCISH_CFLAGS += -O0
else
CFG_GCCISH_CFLAGS += -O2
endif
# The soname thing is for supporting a statically linked jemalloc.
# see https://blog.mozilla.org/jseward/2012/06/05/valgrind-now-supports-jemalloc-builds-directly/
ifdef CFG_VALGRIND
CFG_VALGRIND += --error-exitcode=100 \
--fair-sched=try \
--quiet \
--soname-synonyms=somalloc=NONE \
--suppressions=$(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)),apple-darwin freebsd))
ifeq ($(HOST_$(1)),x86_64)
GOOD_VALGRIND_$(1) = 1
endif
endif
ifdef GOOD_VALGRIND_$(t)
$$(info cfg: have good valgrind for $(t))
else
$$(info cfg: no good valgrind for $(t))
endif
endef
$(foreach t,$(CFG_TARGET),$(eval $(call DEF_GOOD_VALGRIND,$(t))))
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 $(CFG_SRC_DIR)mk/cfg/*.mk)
define ADD_INSTALLED_OBJECTS
INSTALLED_OBJECTS_$(1) += $$(CFG_INSTALLED_OBJECTS_$(1))
REQUIRED_OBJECTS_$(1) += $$(CFG_THIRD_PARTY_OBJECTS_$(1))
INSTALLED_OBJECTS_$(1) += $$(call CFG_STATIC_LIB_NAME_$(1),compiler-rt)
REQUIRED_OBJECTS_$(1) += $$(call CFG_STATIC_LIB_NAME_$(1),compiler-rt)
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call ADD_INSTALLED_OBJECTS,$(target))))
define DEFINE_LINKER
ifndef LINK_$(1)
LINK_$(1) := $$(CC_$(1))
endif
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call DEFINE_LINKER,$(target))))
define ADD_JEMALLOC_DEP
ifndef CFG_DISABLE_JEMALLOC_$(1)
ifndef CFG_DISABLE_JEMALLOC
RUST_DEPS_std_T_$(1) += alloc_jemalloc
TARGET_CRATES_$(1) += alloc_jemalloc
endif
endif
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call ADD_JEMALLOC_DEP,$(target))))
# The -Qunused-arguments sidesteps spurious warnings from clang
define FILTER_FLAGS
ifeq ($$(CFG_USING_CLANG),1)
ifneq ($(findstring clang,$$(shell $(CC_$(1)) -v)),)
CFG_GCCISH_CFLAGS_$(1) += -Qunused-arguments
CFG_GCCISH_CXXFLAGS_$(1) += -Qunused-arguments
endif
endif
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call FILTER_FLAGS,$(target))))
# Configure various macros to pass gcc or cl.exe style arguments
define CC_MACROS
CFG_CC_INCLUDE_$(1)=-I $$(1)
ifeq ($$(findstring msvc,$(1)),msvc)
CFG_CC_OUTPUT_$(1)=-Fo:$$(1)
CFG_CREATE_ARCHIVE_$(1)=$$(AR_$(1)) -OUT:$$(1)
else
CFG_CC_OUTPUT_$(1)=-o $$(1)
CFG_CREATE_ARCHIVE_$(1)=$$(AR_$(1)) crus $$(1)
endif
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call CC_MACROS,$(target))))
ifeq ($(CFG_CCACHE_CPP2),1)
CCACHE_CPP2=1
export CCACHE_CPP
endif
ifdef CFG_CCACHE_BASEDIR
CCACHE_BASEDIR=$(CFG_CCACHE_BASEDIR)
export CCACHE_BASEDIR
endif
FIND_COMPILER = $(word 1,$(1:ccache=))
define CFG_MAKE_TOOLCHAIN
# Prepend the tools with their prefix if cross compiling
ifneq ($(CFG_BUILD),$(1))
ifneq ($$(findstring msvc,$(1)),msvc)
CC_$(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_$(1))
LINK_$(1)=$(CROSS_PREFIX_$(1))$(LINK_$(1))
RUSTC_CROSS_FLAGS_$(1)=-C linker=$$(call FIND_COMPILER,$$(LINK_$(1))) \
-C ar=$$(call FIND_COMPILER,$$(AR_$(1))) $(RUSTC_CROSS_FLAGS_$(1))
RUSTC_FLAGS_$(1)=$$(RUSTC_CROSS_FLAGS_$(1)) $(RUSTC_FLAGS_$(1))
endif
endif
CFG_COMPILE_C_$(1) = $$(CC_$(1)) \
$$(CFLAGS) \
$$(CFG_GCCISH_CFLAGS) \
$$(CFG_GCCISH_CFLAGS_$(1)) \
-c $$(call CFG_CC_OUTPUT_$(1),$$(1)) $$(2)
CFG_LINK_C_$(1) = $$(CC_$(1)) \
$$(LDFLAGS) \
$$(CFG_GCCISH_LINK_FLAGS) -o $$(1) \
$$(CFG_GCCISH_LINK_FLAGS_$(1)) \
$$(CFG_GCCISH_DEF_FLAG_$(1))$$(3) $$(2) \
$$(call CFG_INSTALL_NAME_$(1),$$(4))
CFG_COMPILE_CXX_$(1) = $$(CXX_$(1)) \
$$(CXXFLAGS) \
$$(CFG_GCCISH_CFLAGS) \
$$(CFG_GCCISH_CXXFLAGS) \
$$(CFG_GCCISH_CFLAGS_$(1)) \
$$(CFG_GCCISH_CXXFLAGS_$(1)) \
-c $$(call CFG_CC_OUTPUT_$(1),$$(1)) $$(2)
CFG_LINK_CXX_$(1) = $$(CXX_$(1)) \
$$(LDFLAGS) \
$$(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 aarch64 mips mipsel powerpc),)
# On Bitrig, we need the relocation model to be PIC for everything
ifeq (,$(filter $(OSTYPE_$(1)),bitrig))
LLVM_MC_RELOCATION_MODEL="pic"
else
LLVM_MC_RELOCATION_MODEL="default"
endif
# We're using llvm-mc as our assembler because it supports
# .cfi pseudo-ops on mac
CFG_ASSEMBLE_$(1)=$$(CPP_$(1)) -E $$(2) | \
$$(LLVM_MC_$$(CFG_BUILD)) \
-assemble \
-relocation-model=$$(LLVM_MC_RELOCATION_MODEL) \
-filetype=obj \
-triple=$(1) \
-o=$$(1)
else
# For the ARM, AARCH64, MIPS and POWER crosses, use the toolchain assembler
# FIXME: We should be able to use the LLVM assembler
CFG_ASSEMBLE_$(1)=$$(CC_$(1)) $$(CFG_GCCISH_CFLAGS_$(1)) \
$$(2) -c -o $$(1)
endif
endef
$(foreach target,$(CFG_TARGET), \
$(eval $(call CFG_MAKE_TOOLCHAIN,$(target))))