Yes I didn't want to upgrade but wouldn't let me load anything without doing so unfortunately.
Comes up with this.
Ld /Users/paulharthen/Library/Developer/Xcode/DerivedData/agkinterpreter-cvpdftypqvwsdtgwuoqcjfbvsipi/Build/Products/Debug/My\ App\ Name.app/Contents/MacOS/My\ App\ Name normal x86_64 (in target: agk_interpreter)
cd /Users/paulharthen/AGK/Tier2/apps/agk_test
export MACOSX_DEPLOYMENT_TARGET=10.7
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -L/Users/paulharthen/Library/Developer/Xcode/DerivedData/agkinterpreter-cvpdftypqvwsdtgwuoqcjfbvsipi/Build/Products/Debug -L../../platform/mac/DDHidLib -L../../platform/mac/GLFW -L../../platform/mac/Lib/Debug -L../../platform/mac/Lib/Release -F/Users/paulharthen/Library/Developer/Xcode/DerivedData/agkinterpreter-cvpdftypqvwsdtgwuoqcjfbvsipi/Build/Products/Debug -F../../platform/mac -filelist /Users/paulharthen/Library/Developer/Xcode/DerivedData/agkinterpreter-cvpdftypqvwsdtgwuoqcjfbvsipi/Build/Intermediates.noindex/agkinterpreter.build/Debug/agk_interpreter.build/Objects-normal/x86_64/My\ App\ Name.LinkFileList -mmacosx-version-min=10.7 -Xlinker -object_path_lto -Xlinker /Users/paulharthen/Library/Developer/Xcode/DerivedData/agkinterpreter-cvpdftypqvwsdtgwuoqcjfbvsipi/Build/Intermediates.noindex/agkinterpreter.build/Debug/agk_interpreter.build/Objects-normal/x86_64/My\ App\ Name_lto.o -Xlinker -no_deduplicate -stdlib=libc++ -fobjc-link-runtime -all_load -framework CoreLocation -framework OpenAL -framework OpenGL -framework CoreFoundation -framework Cocoa -framework Quartz -framework IOKit -framework CoreMedia -framework AVFoundation -lAGKMac -Xlinker -dependency_info -Xlinker /Users/paulharthen/Library/Developer/Xcode/DerivedData/agkinterpreter-cvpdftypqvwsdtgwuoqcjfbvsipi/Build/Intermediates.noindex/agkinterpreter.build/Debug/agk_interpreter.build/Objects-normal/x86_64/My\ App\ Name_dependency_info.dat -o /Users/paulharthen/Library/Developer/Xcode/DerivedData/agkinterpreter-cvpdftypqvwsdtgwuoqcjfbvsipi/Build/Products/Debug/My\ App\ Name.app/Contents/MacOS/My\ App\ Name
ld: warning: directory not found for option '-L../../platform/mac/Lib/Debug'
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(enable.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(fullscreen.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(glext.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(image.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(init.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(input.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(joystick.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(stream.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(tga.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(thread.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(time.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(window.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_enable.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_fullscreen.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_glext.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_init.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_joystick.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_thread.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_time.o)) was built for newer OSX version (10.11) than being linked (10.7)
ld: warning: object file (../../platform/mac/Lib/Release/libAGKMac.a(cocoa_window.o)) was built for newer OSX version (10.11) than being linked (10.7)
Undefined symbols for architecture x86_64:
"_CGDisplayBestModeForParametersAndRefreshRateWithProperty", referenced from:
__glfwPlatformOpenWindow in libAGKMac.a(cocoa_window.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Changed the target toL
export MACOSX_DEPLOYMENT_TARGET=10.14
and got rid of a load of warnings, still got the main error though.