I'm using Go version 1.13, Mac Catalina, and Xcode 11.7 to build.
The Xcode building process cannot be finished because of the following error.
Command ExternalBuildToolExecution failed with a nonzero exit code:
>ExternalBuildToolExecution WireGuardGoBridgemacOS (in target 'WireGuardGoBridgemacOS' from project 'WireGuard')
cd /Users/mycomputer/Documents/wireguard-apple-master/WireGuard/../wireguard-go-bridge
export ACTION=
export ALTERNATE_GROUP=staff
export ALTERNATE_MODE=u+w,go-w,a+rX
export ALTERNATE_OWNER=decycle
export ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES=YES
export ALWAYS_SEARCH_USER_PATHS=NO
export APPLE_INTERNAL_DEVELOPER_DIR=/AppleInternal/Developer
export APPLE_INTERNAL_DIR=/AppleInternal
export APPLE_INTERNAL_DOCUMENTATION_DIR=/AppleInternal/Documentation
export APPLE_INTERNAL_LIBRARY_DIR=/AppleInternal/Library
export APPLE_INTERNAL_TOOLS=/AppleInternal/Developer/Tools
export APPLICATION_EXTENSION_API_ONLY=NO
export APPLY_RULES_IN_COPY_FILES=NO
export APPLY_RULES_IN_COPY_HEADERS=NO
export APP_ID_IOS=com.27net.vpnapp
export APP_ID_MACOS=com.27net.vpnapp
export ARCHS=x86_64
export ARCHS_STANDARD=x86_64
export ARCHS_STANDARD_32_64_BIT="x86_64 i386"
export ARCHS_STANDARD_32_BIT=i386
export ARCHS_STANDARD_64_BIT=x86_64
export ARCHS_STANDARD_INCLUDING_64_BIT=x86_64
export AVAILABLE_PLATFORMS="appletvos appletvsimulator iphoneos iphonesimulator macosx watchos watchsimulator"
export BITCODE_GENERATION_MODE=marker
export BUILD_ACTIVE_RESOURCES_ONLY=NO
export BUILD_COMPONENTS="headers build"
export BUILD_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products
export BUILD_LIBRARY_FOR_DISTRIBUTION=NO
export BUILD_ROOT=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products
export BUILD_STYLE=
export BUILD_VARIANTS=normal
export BUILT_PRODUCTS_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products/Debug
export BUNDLE_CONTENTS_FOLDER_PATH=Contents/
export BUNDLE_CONTENTS_FOLDER_PATH_deep=Contents/
export BUNDLE_EXECUTABLE_FOLDER_NAME_deep=MacOS
export BUNDLE_EXECUTABLE_FOLDER_PATH=Contents/MacOS
export BUNDLE_FORMAT=deep
export BUNDLE_FRAMEWORKS_FOLDER_PATH=Contents/Frameworks
export BUNDLE_PLUGINS_FOLDER_PATH=Contents/PlugIns
export BUNDLE_PRIVATE_HEADERS_FOLDER_PATH=Contents/PrivateHeaders
export BUNDLE_PUBLIC_HEADERS_FOLDER_PATH=Contents/Headers
export CACHE_ROOT=/var/folders/zb/7qpl989j2y7bj0tj_22jy20h0000gn/C/com.apple.DeveloperTools/11.7-11E801a/Xcode
export CLANG_ANALYZER_NONNULL=YES
export CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION=YES_AGGRESSIVE
export CLANG_CXX_LANGUAGE_STANDARD=gnu++14
export CLANG_CXX_LIBRARY=libc++
export CLANG_ENABLE_MODULES=YES
export CLANG_ENABLE_OBJC_ARC=YES
export CLANG_ENABLE_OBJC_WEAK=YES
export CLANG_MODULES_BUILD_SESSION_FILE=/Users/decycle/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/Session.modulevalidation
export CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING=YES
export CLANG_WARN_BOOL_CONVERSION=YES
export CLANG_WARN_COMMA=YES
export CLANG_WARN_CONSTANT_CONVERSION=YES
export CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS=YES
export CLANG_WARN_DIRECT_OBJC_ISA_USAGE=YES_ERROR
export CLANG_WARN_DOCUMENTATION_COMMENTS=YES
export CLANG_WARN_EMPTY_BODY=YES
export CLANG_WARN_ENUM_CONVERSION=YES
export CLANG_WARN_INFINITE_RECURSION=YES
export CLANG_WARN_INT_CONVERSION=YES
export CLANG_WARN_NON_LITERAL_NULL_CONVERSION=YES
export CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF=YES
export CLANG_WARN_OBJC_LITERAL_CONVERSION=YES
export CLANG_WARN_OBJC_ROOT_CLASS=YES_ERROR
export CLANG_WARN_RANGE_LOOP_ANALYSIS=YES
export CLANG_WARN_STRICT_PROTOTYPES=YES
export CLANG_WARN_SUSPICIOUS_MOVE=YES
export CLANG_WARN_UNGUARDED_AVAILABILITY=YES_AGGRESSIVE
export CLANG_WARN_UNREACHABLE_CODE=YES_AGGRESSIVE
export CLANG_WARN__DUPLICATE_METHOD_MATCH=YES
export CLASS_FILE_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/JavaClasses
export CLONE_HEADERS=NO
export CODE_SIGNING_ALLOWED=YES
export CODE_SIGN_IDENTITY="Apple Development"
export CODE_SIGN_INJECT_BASE_ENTITLEMENTS=YES
export CODE_SIGN_STYLE=Automatic
export COLOR_DIAGNOSTICS=NO
export COMPILER_INDEX_STORE_ENABLE=Default
export COMPRESS_PNG_FILES=NO
export CONFIGURATION=Debug
export CONFIGURATION_BUILD_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products/Debug
export CONFIGURATION_TEMP_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug
export COPYING_PRESERVES_HFS_DATA=NO
export COPY_HEADERS_RUN_UNIFDEF=NO
export COPY_PHASE_STRIP=NO
export CREATE_INFOPLIST_SECTION_IN_BINARY=NO
export DEAD_CODE_STRIPPING=NO
export DEBUGGING_SYMBOLS=YES
export DEBUG_INFORMATION_FORMAT=dwarf
export DEFAULT_COMPILER=com.apple.compilers.llvm.clang.1_0
export DEFAULT_DEXT_INSTALL_PATH=/System/Library/DriverExtensions
export DEFAULT_KEXT_INSTALL_PATH=/System/Library/Extensions
export DEFINES_MODULE=NO
export DEPLOYMENT_LOCATION=NO
export DEPLOYMENT_POSTPROCESSING=NO
export DEPLOYMENT_TARGET_CLANG_ENV_NAME=MACOSX_DEPLOYMENT_TARGET
export DEPLOYMENT_TARGET_CLANG_FLAG_NAME=mmacosx-version-min
export DEPLOYMENT_TARGET_LD_ENV_NAME=MACOSX_DEPLOYMENT_TARGET
export DEPLOYMENT_TARGET_LD_FLAG_NAME=macosx_version_min
export DEPLOYMENT_TARGET_SETTING_NAME=MACOSX_DEPLOYMENT_TARGET
export DERIVED_FILES_DIR=
export DERIVED_FILE_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/DerivedSources
export DERIVED_SOURCES_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/DerivedSources
export DEVELOPER_APPLICATIONS_DIR=/Applications/Xcode.app/Contents/Developer/Applications
export DEVELOPER_BIN_DIR=/Applications/Xcode.app/Contents/Developer/usr/bin
export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
export DEVELOPER_FRAMEWORKS_DIR=/Applications/Xcode.app/Contents/Developer/Library/Frameworks
export DEVELOPER_FRAMEWORKS_DIR_QUOTED=/Applications/Xcode.app/Contents/Developer/Library/Frameworks
export DEVELOPER_LIBRARY_DIR=/Applications/Xcode.app/Contents/Developer/Library
export DEVELOPER_SDK_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
export DEVELOPER_TOOLS_DIR=/Applications/Xcode.app/Contents/Developer/Tools
export DEVELOPER_USR_DIR=/Applications/Xcode.app/Contents/Developer/usr
export DEVELOPMENT_LANGUAGE=en
export DEVELOPMENT_TEAM=88SM32JH3T
export DONT_GENERATE_INFOPLIST_FILE=NO
export DO_HEADER_SCANNING_IN_JAM=NO
export DSTROOT=/tmp/WireGuard.dst
export DT_TOOLCHAIN_DIR=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
export DWARF_DSYM_FILE_NAME=.dSYM
export DWARF_DSYM_FILE_SHOULD_ACCOMPANY_PRODUCT=NO
export DWARF_DSYM_FOLDER_PATH=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products/Debug
export EMBEDDED_CONTENT_CONTAINS_SWIFT=NO
export EMBEDDED_PROFILE_NAME=embedded.provisionprofile
export EMBED_ASSET_PACKS_IN_PRODUCT_BUNDLE=NO
export ENABLE_BITCODE=NO
export ENABLE_DEFAULT_HEADER_SEARCH_PATHS=YES
export ENABLE_HARDENED_RUNTIME=YES
export ENABLE_HEADER_DEPENDENCIES=YES
export ENABLE_ON_DEMAND_RESOURCES=NO
export ENABLE_PREVIEWS=NO
export ENABLE_STRICT_OBJC_MSGSEND=YES
export ENABLE_TESTABILITY=YES
export ENABLE_TESTING_SEARCH_PATHS=NO
export EXCLUDED_INSTALLSRC_SUBDIRECTORY_PATTERNS=".DS_Store .svn .git .hg CVS"
export EXCLUDED_RECURSIVE_SEARCH_PATH_SUBDIRECTORIES="*.nib *.lproj *.framework *.gch *.xcode* *.xcassets (*) .DS_Store CVS .svn .git .hg *.pbproj *.pbxproj"
export FILE_LIST=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/Objects/LinkFileList
export FRAMEWORK_VERSION=A
export GCC3_VERSION=3.3
export GCC_C_LANGUAGE_STANDARD=gnu11
export GCC_NO_COMMON_BLOCKS=YES
export GCC_OPTIMIZATION_LEVEL=2
export GCC_PREPROCESSOR_DEFINITIONS="DEBUG=1 "
export GCC_VERSION=com.apple.compilers.llvm.clang.1_0
export GCC_WARN_64_TO_32_BIT_CONVERSION=YES
export GCC_WARN_ABOUT_RETURN_TYPE=YES_ERROR
export GCC_WARN_UNDECLARED_SELECTOR=YES
export GCC_WARN_UNINITIALIZED_AUTOS=YES_AGGRESSIVE
export GCC_WARN_UNUSED_FUNCTION=YES
export GCC_WARN_UNUSED_LABEL=YES
export GCC_WARN_UNUSED_VARIABLE=YES
export GENERATE_MASTER_OBJECT_FILE=NO
export GENERATE_PKGINFO_FILE=NO
export GENERATE_PROFILING_CODE=NO
export GENERATE_TEXT_BASED_STUBS=NO
export GID=20
export GROUP=staff
export HEADERMAP_INCLUDES_FLAT_ENTRIES_FOR_TARGET_BEING_BUILT=YES
export HEADERMAP_INCLUDES_FRAMEWORK_ENTRIES_FOR_ALL_PRODUCT_TYPES=YES
export HEADERMAP_INCLUDES_NONPUBLIC_NONPRIVATE_HEADERS=YES
export HEADERMAP_INCLUDES_PROJECT_HEADERS=YES
export HEADERMAP_USES_FRAMEWORK_PREFIX_ENTRIES=YES
export HEADERMAP_USES_VFS=NO
export HIDE_BITCODE_SYMBOLS=YES
export HOME=/Users/decycle
export INFOPLIST_EXPAND_BUILD_SETTINGS=YES
export INFOPLIST_OUTPUT_FORMAT=same-as-input
export INFOPLIST_PREPROCESS=NO
export INLINE_PRIVATE_FRAMEWORKS=NO
export INSTALLHDRS_COPY_PHASE=NO
export INSTALLHDRS_SCRIPT_PHASE=NO
export INSTALL_DIR=/tmp/WireGuard.dst
export INSTALL_GROUP=staff
export INSTALL_MODE_FLAG=u+w,go-w,a+rX
export INSTALL_OWNER=decycle
export INSTALL_ROOT=/tmp/WireGuard.dst
export JAVA_APP_STUB=/System/Library/Frameworks/JavaVM.framework/Resources/MacOS/JavaApplicationStub
export JAVA_ARCHIVE_CLASSES=YES
export JAVA_ARCHIVE_TYPE=JAR
export JAVA_COMPILER=/usr/bin/javac
export JAVA_FRAMEWORK_RESOURCES_DIRS=Resources
export JAVA_JAR_FLAGS=cv
export JAVA_SOURCE_SUBDIR=.
export JAVA_USE_DEPENDENCIES=YES
export JAVA_ZIP_FLAGS=-urg
export KEEP_PRIVATE_EXTERNS=NO
export LD_DEPENDENCY_INFO_FILE=//WireGuardGoBridgemacOS_dependency_info.dat
export LD_GENERATE_MAP_FILE=NO
export LD_MAP_FILE_PATH=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/WireGuardGoBridgemacOS-LinkMap--.txt
export LD_NO_PIE=NO
export LD_QUOTE_LINKER_ARGUMENTS_FOR_COMPILER_DRIVER=YES
export LEGACY_DEVELOPER_DIR=/Applications/Xcode.app/Contents/PlugIns/Xcode3Core.ideplugin/Contents/SharedSupport/Developer
export LIBRARY_DEXT_INSTALL_PATH=/Library/DriverExtensions
export LIBRARY_FLAG_NOSPACE=YES
export LIBRARY_KEXT_INSTALL_PATH=/Library/Extensions
export LINKER_DISPLAYS_MANGLED_NAMES=NO
export LINK_FILE_LIST_normal_x86_64=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/Objects-normal/x86_64/WireGuardGoBridgemacOS.LinkFileList
export LINK_WITH_STANDARD_LIBRARIES=YES
export LLVM_TARGET_TRIPLE_OS_VERSION=macos10.15
export LLVM_TARGET_TRIPLE_VENDOR=apple
export LOCALIZED_STRING_MACRO_NAMES="NSLocalizedString CFCopyLocalizedString"
export LOCALIZED_STRING_SWIFTUI_SUPPORT=YES
export LOCAL_ADMIN_APPS_DIR=/Applications/Utilities
export LOCAL_APPS_DIR=/Applications
export LOCAL_DEVELOPER_DIR=/Library/Developer
export LOCAL_LIBRARY_DIR=/Library
export LOCROOT=/Users/decycle/Documents/wireguard-apple-master/WireGuard
export LOCSYMROOT=/Users/decycle/Documents/wireguard-apple-master/WireGuard
export MACOSX_DEPLOYMENT_TARGET=10.15
export MAC_OS_X_PRODUCT_BUILD_VERSION=19G73
export MAC_OS_X_VERSION_ACTUAL=101506
export MAC_OS_X_VERSION_MAJOR=101500
export MAC_OS_X_VERSION_MINOR=1506
export METAL_LIBRARY_FILE_BASE=default
export METAL_LIBRARY_OUTPUT_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products/Debug/
export MODULE_CACHE_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/ModuleCache.noindex
export MTL_ENABLE_DEBUG_INFO=YES
export MTL_FAST_MATH=YES
export NATIVE_ARCH=x86_64
export NATIVE_ARCH_32_BIT=i386
export NATIVE_ARCH_64_BIT=x86_64
export NATIVE_ARCH_ACTUAL=x86_64
export OBJECT_FILE_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/Objects
export OBJROOT=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex
export ONLY_ACTIVE_ARCH=YES
export OS=MACOS
export PATH=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/bin:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/libexec:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/usr/bin:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/usr/local/bin:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
export PATH_PREFIXES_EXCLUDED_FROM_HEADER_DEPENDENCIES="/usr/include /usr/local/include /System/Library/Frameworks /System/Library/PrivateFrameworks /Applications/Xcode.app/Contents/Developer/Headers /Applications/Xcode.app/Contents/Developer/SDKs /Applications/Xcode.app/Contents/Developer/Platforms"
export PER_ARCH_OBJECT_FILE_DIR=/
export PLATFORM_DEVELOPER_APPLICATIONS_DIR=/Applications/Xcode.app/Contents/Developer/Applications
export PLATFORM_DEVELOPER_BIN_DIR=/Applications/Xcode.app/Contents/Developer/usr/bin
export PLATFORM_DEVELOPER_LIBRARY_DIR=/Applications/Xcode.app/Contents/Developer/Library
export PLATFORM_DEVELOPER_SDK_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
export PLATFORM_DEVELOPER_TOOLS_DIR=/Applications/Xcode.app/Contents/Developer/Tools
export PLATFORM_DEVELOPER_USR_DIR=/Applications/Xcode.app/Contents/Developer/usr
export PLATFORM_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform
export PLATFORM_DISPLAY_NAME=macOS
export PLATFORM_FAMILY_NAME=macOS
export PLATFORM_NAME=macosx
export PLATFORM_PREFERRED_ARCH=x86_64
export PLATFORM_PRODUCT_BUILD_VERSION=11E801a
export PLIST_FILE_OUTPUT_FORMAT=same-as-input
export PRECOMPS_INCLUDE_HEADERS_FROM_BUILT_PRODUCTS_DIR=YES
export PRECOMP_DESTINATION_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/PrefixHeaders
export PRESERVE_DEAD_CODE_INITS_AND_TERMS=NO
export PRODUCT_MODULE_NAME=WireGuardGoBridgemacOS
export PRODUCT_NAME=WireGuardGoBridgemacOS
export PROFILING_CODE=NO
export PROJECT=WireGuard
export PROJECT_DERIVED_FILE_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/DerivedSources
export PROJECT_DIR=/Users/decycle/Documents/wireguard-apple-master/WireGuard
export PROJECT_FILE_PATH=/Users/decycle/Documents/wireguard-apple-master/WireGuard/WireGuard.xcodeproj
export PROJECT_NAME=WireGuard
export PROJECT_TEMP_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build
export PROJECT_TEMP_ROOT=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex
export REMOVE_CVS_FROM_RESOURCES=YES
export REMOVE_GIT_FROM_RESOURCES=YES
export REMOVE_HEADERS_FROM_EMBEDDED_BUNDLES=YES
export REMOVE_HG_FROM_RESOURCES=YES
export REMOVE_SVN_FROM_RESOURCES=YES
export SCAN_ALL_SOURCE_FILES_FOR_INCLUDES=NO
export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk
export SEPARATE_STRIP=NO
export SEPARATE_SYMBOL_EDIT=NO
export SHARED_DERIVED_FILE_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products/Debug/DerivedSources
export SHARED_PRECOMPS_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/PrecompiledHeaders
export SKIP_INSTALL=YES
export SOURCE_ROOT=/Users/decycle/Documents/wireguard-apple-master/WireGuard
export SRCROOT=/Users/decycle/Documents/wireguard-apple-master/WireGuard
export STRINGS_FILE_OUTPUT_ENCODING=UTF-16
export STRIP_BITCODE_FROM_COPIED_FILES=NO
export STRIP_INSTALLED_PRODUCT=YES
export STRIP_PNG_TEXT=NO
export STRIP_STYLE=all
export STRIP_SWIFT_SYMBOLS=YES
export SUPPORTED_PLATFORMS=macosx
export SUPPORTS_TEXT_BASED_API=NO
export SWIFT_ACTIVE_COMPILATION_CONDITIONS=DEBUG
export SWIFT_OBJC_BRIDGING_HEADER=WireGuard/WireGuard-Bridging-Header.h
export SWIFT_OPTIMIZATION_LEVEL=-Onone
export SWIFT_PLATFORM_TARGET_PREFIX=macos
export SWIFT_RESPONSE_FILE_PATH_normal_x86_64=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build/Objects-normal/x86_64/WireGuardGoBridgemacOS.SwiftFileList
export SWIFT_VERSION=4.2
export SYMROOT=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products
export SYSTEM_ADMIN_APPS_DIR=/Applications/Utilities
export SYSTEM_APPS_DIR=/Applications
export SYSTEM_CORE_SERVICES_DIR=/System/Library/CoreServices
export SYSTEM_DEMOS_DIR=/Applications/Extras
export SYSTEM_DEVELOPER_APPS_DIR=/Applications/Xcode.app/Contents/Developer/Applications
export SYSTEM_DEVELOPER_BIN_DIR=/Applications/Xcode.app/Contents/Developer/usr/bin
export SYSTEM_DEVELOPER_DEMOS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Utilities/Built Examples"
export SYSTEM_DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
export SYSTEM_DEVELOPER_DOC_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library"
export SYSTEM_DEVELOPER_GRAPHICS_TOOLS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Graphics Tools"
export SYSTEM_DEVELOPER_JAVA_TOOLS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Java Tools"
export SYSTEM_DEVELOPER_PERFORMANCE_TOOLS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Performance Tools"
export SYSTEM_DEVELOPER_RELEASENOTES_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library/releasenotes"
export SYSTEM_DEVELOPER_TOOLS=/Applications/Xcode.app/Contents/Developer/Tools
export SYSTEM_DEVELOPER_TOOLS_DOC_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library/documentation/DeveloperTools"
export SYSTEM_DEVELOPER_TOOLS_RELEASENOTES_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library/releasenotes/DeveloperTools"
export SYSTEM_DEVELOPER_USR_DIR=/Applications/Xcode.app/Contents/Developer/usr
export SYSTEM_DEVELOPER_UTILITIES_DIR=/Applications/Xcode.app/Contents/Developer/Applications/Utilities
export SYSTEM_DEXT_INSTALL_PATH=/System/Library/DriverExtensions
export SYSTEM_DOCUMENTATION_DIR=/Library/Documentation
export SYSTEM_KEXT_INSTALL_PATH=/System/Library/Extensions
export SYSTEM_LIBRARY_DIR=/System/Library
export TAPI_VERIFY_MODE=ErrorsOnly
export TARGETED_DEVICE_FAMILY=1,2
export TARGETNAME=WireGuardGoBridgemacOS
export TARGET_BUILD_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Products/Debug
export TARGET_NAME=WireGuardGoBridgemacOS
export TARGET_TEMP_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build
export TEMP_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build
export TEMP_FILES_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build
export TEMP_FILE_DIR=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/WireGuardGoBridgemacOS.build
export TEMP_ROOT=/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex
export TOOLCHAIN_DIR=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
export TREAT_MISSING_BASELINES_AS_TEST_FAILURES=NO
export UID=501
export USER=decycle
export USER_APPS_DIR=/Users/decycle/Applications
export USER_LIBRARY_DIR=/Users/decycle/Library
export USE_HEADERMAP=YES
export USE_LLVM_TARGET_TRIPLES=YES
export USE_LLVM_TARGET_TRIPLES_FOR_CLANG=YES
export USE_LLVM_TARGET_TRIPLES_FOR_LD=YES
export USE_LLVM_TARGET_TRIPLES_FOR_TAPI=YES
export VALIDATE_DEVELOPMENT_ASSET_PATHS=YES_ERROR
export VALIDATE_WORKSPACE=YES_ERROR
export VALID_ARCHS="i386 x86_64"
export VERSION_ID=17
export VERSION_NAME=0.0.20200127
export WRAP_ASSET_PACKS_IN_SEPARATE_DIRECTORIES=NO
export XCODE_APP_SUPPORT_DIR=/Applications/Xcode.app/Contents/Developer/Library/Xcode
export XCODE_PRODUCT_BUILD_VERSION=11E801a
export XCODE_VERSION_ACTUAL=1170
export XCODE_VERSION_MAJOR=1100
export XCODE_VERSION_MINOR=1170
export arch=undefined_arch
export variant=normal
/usr/bin/make
[ -n "" ]
make: *** [/Users/decycle/Library/Developer/Xcode/DerivedData/WireGuard-crxuyioyijtaqnfyuzfxrswnwmjc/Build/Intermediates.noindex/WireGuard.build/Debug/wireguard-go-bridge/goroot/.prepared] Error 1
solution which helped me:
in build settings click on the + and add user defined setting, then add PATH as key and ${PATH}:your-go-path as value (in my case ${PATH}:/usr/local/opt/go@1.13/bin).
found this somewhere on reddit
UPD
while updating wireguard dependency had same scenario build failure
updating go to version 1.16 fixed this (so the PATH value for me now looks like ${PATH}:/usr/local/opt/go@1.16/bin)
UPD 2
for mac with M1 the PATH should look like this:
${PATH}:/opt/homebrew/opt/go@1.16/bin