Add option to extract debug infos into <file>.debug file and link it

[henderkes]

like

if (!$this->getOption('no-strip', false) && file_exists(BUILD_BIN_PATH . '/frankenphp')) {
    shell()->cd(BUILD_BIN_PATH)->exec('objcopy --only-keep-debug frankenphp frankenphp.debug');
    if (PHP_OS_FAMILY === 'Linux') {
        shell()->cd(BUILD_BIN_PATH)->exec('strip --strip-unneeded frankenphp');
    } else {
        shell()->cd(BUILD_BIN_PATH)->exec('strip -S frankenphp');
    }
    shell()->cd(BUILD_BIN_PATH)->exec('objcopy --add-gnu-debuglink=frankenphp.debug frankenphp');
}

[crazywhalecc]

We may also need to deploy debug symbol files in buildroot. Let me confirm the expected logic:

1. [*nix] Build with --no-strip: php with debug symbols inside
2. [linux] Build without --no-strip: php with external debug symbol file {sapi}.debug
3. [mac] Build without --no-strip: php with external debug symbol file php.dwarf
4. [win] Build with --no-strip: php.exe with php.pdb file
5. [win] Build without --no-strip: Just php.exe

[henderkes]

Yes, that's the way it should work I think.