diff options
Diffstat (limited to 'depends')
| -rw-r--r-- | depends/Makefile | 34 | ||||
| -rw-r--r-- | depends/hosts/darwin.mk | 35 |
2 files changed, 54 insertions, 15 deletions
diff --git a/depends/Makefile b/depends/Makefile index 0de98f8e3c..e0265973cb 100644 --- a/depends/Makefile +++ b/depends/Makefile @@ -167,11 +167,7 @@ $(host_arch)_$(host_os)_native_toolchain?=$($(host_os)_native_toolchain) include funcs.mk binutils_path=$($($(host_arch)_$(host_os)_native_binutils)_prefixbin) -ifeq ($(strip $(FORCE_USE_SYSTEM_CLANG)),) -toolchain_path=$($($(host_arch)_$(host_os)_native_toolchain)_prefixbin) -else -toolchain_path= -endif + final_build_id_long+=$(shell $(build_SHA256SUM) config.site.in) final_build_id+=$(shell echo -n "$(final_build_id_long)" | $(build_SHA256SUM) | cut -c-$(HASH_LENGTH)) $(host_prefix)/.stamp_$(final_build_id): $(native_packages) $(packages) @@ -182,11 +178,35 @@ $(host_prefix)/.stamp_$(final_build_id): $(native_packages) $(packages) $(AT)cd $(@D); $(foreach package,$^, tar xf $($(package)_cached); ) $(AT)touch $@ +# $PATH is not preserved between ./configure and make by convention. Its +# modification and overriding at ./configure time is (as I understand it) +# supposed to be captured by the AC_{PROG_{,OBJ}CXX,PATH_{PROG,TOOL}} macros, +# which will expand the program names to their full absolute paths. The notable +# exception is command line overriding: ./configure CC=clang, which skips the +# program name expansion step, and works because the user implicitly indicates +# with CC=clang that clang will be available in $PATH at all times, and is most +# likely part of the user's system. +# +# Therefore, when we "seed the autoconf cache"/"override well-known program +# vars" by setting AR=<blah> in our config.site, either one of two things needs +# to be true for the build system to work correctly: +# +# 1. If we refer to the program by name (e.g. AR=riscv64-gnu-linux-ar), the +# tool needs to be available in $PATH at all times. +# +# 2. If the tool is _**not**_ expected to be available in $PATH at all times +# (such as is the case for our native_cctools binutils tools), it needs to +# be referred to by its absolute path, such as would be output by the +# AC_PATH_{PROG,TOOL} macros. +# +# Minor note: it is also okay to refer to tools by their absolute path even if +# we expect them to be available in $PATH at all times, more specificity does +# not hurt. $(host_prefix)/share/config.site : config.site.in $(host_prefix)/.stamp_$(final_build_id) $(AT)@mkdir -p $(@D) $(AT)sed -e 's|@HOST@|$(host)|' \ - -e 's|@CC@|$(toolchain_path)$(host_CC)|' \ - -e 's|@CXX@|$(toolchain_path)$(host_CXX)|' \ + -e 's|@CC@|$(host_CC)|' \ + -e 's|@CXX@|$(host_CXX)|' \ -e 's|@AR@|$(binutils_path)$(host_AR)|' \ -e 's|@RANLIB@|$(binutils_path)$(host_RANLIB)|' \ -e 's|@NM@|$(binutils_path)$(host_NM)|' \ diff --git a/depends/hosts/darwin.mk b/depends/hosts/darwin.mk index 4a70d55405..fb947bf337 100644 --- a/depends/hosts/darwin.mk +++ b/depends/hosts/darwin.mk @@ -7,8 +7,33 @@ LD64_VERSION=530 OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with-libcxx-headers ifeq ($(strip $(FORCE_USE_SYSTEM_CLANG)),) +# FORCE_USE_SYSTEM_CLANG is empty, so we use our depends-managed, pinned clang +# from llvm.org + +# The native_cctools package is what provides clang when FORCE_USE_SYSTEM_CLANG +# is empty +darwin_native_toolchain=native_cctools + +clang_prog=$(build_prefix)/bin/clang +clangxx_prog=$(clang_prog)++ + clang_resource_dir=$(build_prefix)/lib/clang/$(native_cctools_clang_version) else +# FORCE_USE_SYSTEM_CLANG is non-empty, so we use the clang from the user's +# system + +darwin_native_toolchain= + +# We can't just use $(shell command -v clang) because GNU Make handles builtins +# in a special way and doesn't know that `command` is a POSIX-standard builtin +# prior to 1af314465e5dfe3e8baa839a32a72e83c04f26ef, first released in v4.2.90. +# At the time of writing, GNU Make v4.2.1 is still being used in supported +# distro releases. +# +# Source: https://lists.gnu.org/archive/html/bug-make/2017-11/msg00017.html +clang_prog=$(shell $(SHELL) $(.SHELLFLAGS) "command -v clang") +clangxx_prog=$(shell $(SHELL) $(.SHELLFLAGS) "command -v clang++") + clang_resource_dir=$(shell clang -print-resource-dir) endif @@ -62,7 +87,7 @@ endif darwin_CC=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \ -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH \ -u LIBRARY_PATH \ - clang --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \ + $(clang_prog) --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \ -B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \ --sysroot=$(OSX_SDK) \ -Xclang -internal-externc-isystem$(clang_resource_dir)/include \ @@ -70,7 +95,7 @@ darwin_CC=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \ darwin_CXX=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \ -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH \ -u LIBRARY_PATH \ - clang++ --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \ + $(clangxx_prog) --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \ -B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \ --sysroot=$(OSX_SDK) \ -stdlib=libc++ -nostdinc++ \ @@ -88,10 +113,4 @@ darwin_debug_CFLAGS=-O1 darwin_debug_CXXFLAGS=$(darwin_debug_CFLAGS) darwin_native_binutils=native_cctools -ifeq ($(strip $(FORCE_USE_SYSTEM_CLANG)),) -darwin_native_toolchain=native_cctools -else -darwin_native_toolchain= -endif - darwin_cmake_system=Darwin |