1 files changed, 102 insertions, 0 deletions
diff --git a/meta/classes-recipe/goarch.bbclass b/meta/classes-recipe/goarch.bbclass
new file mode 100644
index 0000000000..6899ec28e4
--- /dev/null
+++ b/meta/classes-recipe/goarch.bbclass
@@ -0,0 +1,102 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+BUILD_GOOS = "${@go_map_os(d.getVar('BUILD_OS'), d)}"
+BUILD_GOARCH = "${@go_map_arch(d.getVar('BUILD_ARCH'), d)}"
+BUILD_GOTUPLE = "${BUILD_GOOS}_${BUILD_GOARCH}"
+HOST_GOOS = "${@go_map_os(d.getVar('HOST_OS'), d)}"
+HOST_GOARCH = "${@go_map_arch(d.getVar('HOST_ARCH'), d)}"
+HOST_GOARM = "${@go_map_arm(d.getVar('HOST_ARCH'), d)}"
+HOST_GO386 = "${@go_map_386(d.getVar('HOST_ARCH'), d.getVar('TUNE_FEATURES'), d)}"
+HOST_GOMIPS = "${@go_map_mips(d.getVar('HOST_ARCH'), d.getVar('TUNE_FEATURES'), d)}"
+HOST_GOARM:class-native = "7"
+HOST_GO386:class-native = "sse2"
+HOST_GOMIPS:class-native = "hardfloat"
+HOST_GOTUPLE = "${HOST_GOOS}_${HOST_GOARCH}"
+TARGET_GOOS = "${@go_map_os(d.getVar('TARGET_OS'), d)}"
+TARGET_GOARCH = "${@go_map_arch(d.getVar('TARGET_ARCH'), d)}"
+TARGET_GOARM = "${@go_map_arm(d.getVar('TARGET_ARCH'), d)}"
+TARGET_GO386 = "${@go_map_386(d.getVar('TARGET_ARCH'), d.getVar('TUNE_FEATURES'), d)}"
+TARGET_GOMIPS = "${@go_map_mips(d.getVar('TARGET_ARCH'), d.getVar('TUNE_FEATURES'), d)}"
+TARGET_GOARM:class-native = "7"
+TARGET_GO386:class-native = "sse2"
+TARGET_GOMIPS:class-native = "hardfloat"
+TARGET_GOTUPLE = "${TARGET_GOOS}_${TARGET_GOARCH}"
+GO_BUILD_BINDIR = "${@['bin/${HOST_GOTUPLE}','bin'][d.getVar('BUILD_GOTUPLE') == d.getVar('HOST_GOTUPLE')]}"
+
+# Use the MACHINEOVERRIDES to map ARM CPU architecture passed to GO via GOARM.
+# This is combined with *_ARCH to set HOST_GOARM and TARGET_GOARM.
+BASE_GOARM = ''
+BASE_GOARM:armv7ve = '7'
+BASE_GOARM:armv7a = '7'
+BASE_GOARM:armv6 = '6'
+BASE_GOARM:armv5 = '5'
+
+# Go supports dynamic linking on a limited set of architectures.
+# See the supportsDynlink function in go/src/cmd/compile/internal/gc/main.go
+GO_DYNLINK = ""
+GO_DYNLINK:arm = ""
+GO_DYNLINK:aarch64 = ""
+GO_DYNLINK:x86 = ""
+GO_DYNLINK:x86-64 = ""
+GO_DYNLINK:powerpc64 = ""
+GO_DYNLINK:powerpc64le = ""
+GO_DYNLINK:class-native = ""
+GO_DYNLINK:class-nativesdk = ""
+
+# define here because everybody inherits this class
+#
+COMPATIBLE_HOST:linux-gnux32 = "null"
+COMPATIBLE_HOST:linux-muslx32 = "null"
+COMPATIBLE_HOST:powerpc = "null"
+COMPATIBLE_HOST:powerpc64 = "null"
+COMPATIBLE_HOST:mipsarchn32 = "null"
+COMPATIBLE_HOST:riscv32 = "null"
+
+ARM_INSTRUCTION_SET:armv4 = "arm"
+ARM_INSTRUCTION_SET:armv5 = "arm"
+ARM_INSTRUCTION_SET:armv6 = "arm"
+
+TUNE_CCARGS:remove = "-march=mips32r2"
+SECURITY_NOPIE_CFLAGS ??= ""
+
+# go can't be built with ccache:
+# gcc: fatal error: no input files
+CCACHE_DISABLE ?= "1"
+
+def go_map_arch(a, d):
+    arch = oe.go.map_arch(a)
+    if not arch:
+        raise bb.parse.SkipRecipe("Unsupported CPU architecture: %s" % a)
+    return arch
+
+def go_map_arm(a, d):
+    if a.startswith("arm"):
+        return d.getVar('BASE_GOARM')
+    return ''
+
+def go_map_386(a, f, d):
+    import re
+    if re.match('i.86', a):
+        if ('core2' in f) or ('corei7' in f):
+            return 'sse2'
+        else:
+            return 'softfloat'
+    return ''
+
+def go_map_mips(a, f, d):
+    import re
+    if a == 'mips' or a == 'mipsel':
+        if 'fpu-hard' in f:
+            return 'hardfloat'
+        else:
+            return 'softfloat'
+    return ''
+
+def go_map_os(o, d):
+    if o.startswith('linux'):
+        return 'linux'
+    return o