Hi everyone! I'm trying to configure C++ compilation on arm64 architecture, while using the

cpp-library

plugin. (Note: I'm not talking about cross-compilation. I would like to compile for x86_64 on x86_64 and for arm64 on arm64). I managed to solve the same using the old

cpp

plugin like this (where

arch

is determined based on a property passed in with

-P

):

plugins {
    id 'cpp'
}

model {
    toolChains {
        gcc(Gcc) {
            target("linux_aarch64") {
                cppCompiler.executable = '/usr/bin/gcc'
            }
        }
    }

    platforms {
        x86_64 {
            architecture 'x86_64'
        }
        linux_aarch64 {
            architecture 'arm64'
            operatingSystem 'linux'
        }
    }

    components {
        main(NativeLibrarySpec) {
              targetPlatform arch
            
			  <...>
        }
	}
}

However, I've been unable to achieve the same using the

cpp-library

plugin or even when "mixing"

cpp

and

cpp-library

, like below:

plugins {
    id 'cpp'
    id 'cpp-library'
}

model {
    toolChains {
        gcc(Gcc) {
            target("linux_aarch64") {
                cppCompiler.executable = '/usr/bin/gcc'
            }
        }
    }

    platforms {
        x86_64 {
            architecture 'x86_64'
        }
        linux_aarch64 {
            architecture 'arm64'
            operatingSystem 'linux'
        }
    }
}

library {                     
    baseName = <...>
    linkage = [Linkage.SHARED]
}                             

tasks.withType(CppCompile).configureEach {
    targetPlatform arch

    <...>
}

All attempts involving the

cpp-library

plugin so far resulted in some variation of this error:

> Failed to notify project evaluation listener.
   > No tool chain has support to build C++ for host operating system 'Linux' architecture 'aarch64':
       - Tool chain 'gcc' (GNU GCC):
           - Don't know how to build for host operating system 'Linux' architecture 'aarch64'.

Can you point me in the direction for how to solve this? Or should I just forget about

cpp-library

as it is simply not doable?