diff options
Diffstat (limited to 'depends/hosts/darwin.mk')
| -rw-r--r-- | depends/hosts/darwin.mk | 55 |
1 files changed, 52 insertions, 3 deletions
diff --git a/depends/hosts/darwin.mk b/depends/hosts/darwin.mk index e9faeba336..83da049618 100644 --- a/depends/hosts/darwin.mk +++ b/depends/hosts/darwin.mk @@ -6,6 +6,12 @@ LD64_VERSION=530 OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with-libcxx-headers +ifeq ($(strip $(FORCE_USE_SYSTEM_CLANG)),) +clang_resource_dir=$(build_prefix)/lib/clang/$(native_cctools_clang_version) +else +clang_resource_dir=$(shell clang -print-resource-dir) +endif + # Flag explanations: # # -mlinker-version @@ -18,7 +24,7 @@ OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with- # Explicitly point to our binaries (e.g. cctools) so that they are # ensured to be found and preferred over other possibilities. # -# -nostdinc++ -isystem $(OSX_SDK)/usr/include/c++/v1 +# -stdlib=libc++ -nostdinc++ -Xclang -cxx-isystem$(OSX_SDK)/usr/include/c++/v1 # # Forces clang to use the libc++ headers from our SDK and completely # forget about the libc++ headers from the standard directories @@ -28,8 +34,51 @@ OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with- # https://reviews.llvm.org/D64089, we should use that instead. Read the # differential summary there for more details. # -darwin_CC=clang -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION) -B$(build_prefix)/bin -darwin_CXX=clang++ -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -stdlib=libc++ -mlinker-version=$(LD64_VERSION) -B$(build_prefix)/bin -nostdinc++ -isystem $(OSX_SDK)/usr/include/c++/v1 +# -Xclang -*system<path_a> \ +# -Xclang -*system<path_b> \ +# -Xclang -*system<path_c> ... +# +# Adds path_a, path_b, and path_c to the bottom of clang's list of +# include search paths. This is used to explicitly specify the list of +# system include search paths and its ordering, rather than rely on +# clang's autodetection routine. This routine has been shown to: +# 1. Fail to pickup libc++ headers in $SYSROOT/usr/include/c++/v1 +# when clang was built manually (see: https://github.com/bitcoin/bitcoin/pull/17919#issuecomment-656785034) +# 2. Fail to pickup C headers in $SYSROOT/usr/include when +# C_INCLUDE_DIRS was specified at configure time (see: https://gist.github.com/dongcarl/5cdc6990b7599e8a5bf6d2a9c70e82f9) +# +# Talking directly to cc1 with -Xclang here grants us access to specify +# more granular categories for these system include search paths, and we +# can use the correct categories that these search paths would have been +# placed in if the autodetection routine had worked correctly. (see: +# https://gist.github.com/dongcarl/5cdc6990b7599e8a5bf6d2a9c70e82f9#the-treatment) +# +# Furthermore, it places these search paths after any "non-Xclang" +# specified search paths. This prevents any additional clang options or +# environment variables from coming after or in between these system +# include search paths, as that would be wrong in general but would also +# break #include_next's. +# +darwin_CC=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \ + -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH \ + -u LIBRARY_PATH \ + clang --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \ + -B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \ + -fuse-ld=$(build_prefix)/bin/x86_64-apple-darwin16-ld \ + --sysroot=$(OSX_SDK) \ + -Xclang -internal-externc-isystem$(clang_resource_dir)/include \ + -Xclang -internal-externc-isystem$(OSX_SDK)/usr/include +darwin_CXX=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \ + -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH \ + -u LIBRARY_PATH \ + clang++ --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \ + -B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \ + -fuse-ld=$(build_prefix)/bin/x86_64-apple-darwin16-ld \ + --sysroot=$(OSX_SDK) \ + -stdlib=libc++ -nostdinc++ \ + -Xclang -cxx-isystem$(OSX_SDK)/usr/include/c++/v1 \ + -Xclang -internal-externc-isystem$(clang_resource_dir)/include \ + -Xclang -internal-externc-isystem$(OSX_SDK)/usr/include darwin_CFLAGS=-pipe darwin_CXXFLAGS=$(darwin_CFLAGS) |