OSX_MIN_VERSION=10.13
OSX_SDK_VERSION=11.0
XCODE_VERSION=12.2
XCODE_BUILD_ID=12B45b
LD64_VERSION=609

OSX_SDK=$(host_prefix)/native/SDK

darwin_native_toolchain=darwin_sdk native_cctools

clang_prog=$(shell $(SHELL) $(.SHELLFLAGS) "command -v clang")
clangxx_prog=$(shell $(SHELL) $(.SHELLFLAGS) "command -v clang++")

# Flag explanations:
#
#     -mlinker-version
#
#         Ensures that modern linker features are enabled. See here for more
#         details: https://github.com/bitcoin/bitcoin/pull/19407.
#
#     -B$(build_prefix)/bin
#
#         Explicitly point to our binaries (e.g. cctools) so that they are
#         ensured to be found and preferred over other possibilities.
#
#     -isysroot$(OSX_SDK) -nostdlibinc
#
#         Disable default include paths built into the compiler as well as
#         those normally included for libc and libc++. The only path that
#         remains implicitly is the clang resource dir.
#
#     -iwithsysroot / -iframeworkwithsysroot
#
#         Adds the desired paths from the SDK
#

darwin_CC=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \
              -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH \
              -u LIBRARY_PATH \
            $(clang_prog) --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \
              -B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \
              -isysroot$(OSX_SDK) \
              -isysroot$(OSX_SDK) -nostdlibinc \
              -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks

darwin_CXX=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \
               -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH \
               -u LIBRARY_PATH \
             $(clangxx_prog) --target=$(host) -mmacosx-version-min=$(OSX_MIN_VERSION) \
               -B$(build_prefix)/bin -mlinker-version=$(LD64_VERSION) \
               -isysroot$(OSX_SDK) -nostdlibinc \
               -iwithsysroot/usr/include/c++/v1 \
               -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks

darwin_CFLAGS=-pipe
darwin_CXXFLAGS=$(darwin_CFLAGS)
darwin_ARFLAGS=cr

darwin_release_CFLAGS=-O2
darwin_release_CXXFLAGS=$(darwin_release_CFLAGS)

darwin_debug_CFLAGS=-O1
darwin_debug_CXXFLAGS=$(darwin_debug_CFLAGS)

darwin_cmake_system=Darwin