| BUILD_GOOS = "${@go_map_os(d.getVar('BUILD_OS', True), d)}" | 
 | BUILD_GOARCH = "${@go_map_arch(d.getVar('BUILD_ARCH', True), d)}" | 
 | BUILD_GOTUPLE = "${BUILD_GOOS}_${BUILD_GOARCH}" | 
 | HOST_GOOS = "${@go_map_os(d.getVar('HOST_OS', True), d)}" | 
 | HOST_GOARCH = "${@go_map_arch(d.getVar('HOST_ARCH', True), d)}" | 
 | HOST_GOARM = "${@go_map_arm(d.getVar('HOST_ARCH', True), d.getVar('TUNE_FEATURES', True), d)}" | 
 | HOST_GOTUPLE = "${HOST_GOOS}_${HOST_GOARCH}" | 
 | TARGET_GOOS = "${@go_map_os(d.getVar('TARGET_OS', True), d)}" | 
 | TARGET_GOARCH = "${@go_map_arch(d.getVar('TARGET_ARCH', True), d)}" | 
 | TARGET_GOARM = "${@go_map_arm(d.getVar('TARGET_ARCH', True), d.getVar('TUNE_FEATURES', True), d)}" | 
 | TARGET_GOTUPLE = "${TARGET_GOOS}_${TARGET_GOARCH}" | 
 | GO_BUILD_BINDIR = "${@['bin/${HOST_GOTUPLE}','bin'][d.getVar('BUILD_GOTUPLE',True) == d.getVar('HOST_GOTUPLE',True)]}" | 
 |  | 
 | def go_map_arch(a, d): | 
 |     import re | 
 |     if re.match('i.86', a): | 
 |         return '386' | 
 |     elif a == 'x86_64': | 
 |         return 'amd64' | 
 |     elif re.match('arm.*', a): | 
 |         return 'arm' | 
 |     elif re.match('aarch64.*', a): | 
 |         return 'arm64' | 
 |     elif re.match('p(pc|owerpc)(|64)', a): | 
 |         return 'powerpc' | 
 |     else: | 
 |         bb.error("cannot map '%s' to a Go architecture" % a) | 
 |  | 
 | def go_map_arm(a, f, d): | 
 |     import re | 
 |     if re.match('arm.*', a) and re.match('arm.*7.*', f): | 
 |         return '7' | 
 |     return '' | 
 |  | 
 | def go_map_os(o, d): | 
 |     if o.startswith('linux'): | 
 |         return 'linux' | 
 |     return o |