go: Add recipes for golang compilers and tools

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+inherit goarch
+
+GOROOT_class-native = "${STAGING_LIBDIR_NATIVE}/go"
+GOROOT = "${STAGING_LIBDIR_NATIVE}/${TARGET_SYS}/go"
+GOBIN_FINAL_class-native = "${GOROOT_FINAL}/bin"
+GOBIN_FINAL = "${GOROOT_FINAL}/bin/${GOOS}_${GOARCH}"
+
+export GOOS = "${TARGET_GOOS}"
+export GOARCH = "${TARGET_GOARCH}"
+export GOARM = "${TARGET_GOARM}"
+export CGO_ENABLED = "1"
+export GOROOT
+export GOROOT_FINAL = "${libdir}/${TARGET_SYS}/go"
+export GOBIN_FINAL
+export GOPKG_FINAL = "${GOROOT_FINAL}/pkg/${GOOS}_${GOARCH}"
+export GOSRC_FINAL = "${GOROOT_FINAL}/src"
+export GO_GCFLAGS = "${TARGET_CFLAGS}"
+export GO_LDFLAGS = "${TARGET_LDFLAGS}"
+export CGO_CFLAGS = "${TARGET_CC_ARCH}${TOOLCHAIN_OPTIONS} ${TARGET_CFLAGS}"
+export CGO_CPPFLAGS = "${TARGET_CPPFLAGS}"
+export CGO_CXXFLAGS = "${TARGET_CC_ARCH}${TOOLCHAIN_OPTIONS} ${TARGET_CXXFLAGS}"
+export CGO_LDFLAGS = "${TARGET_CC_ARCH}${TOOLCHAIN_OPTIONS} ${TARGET_LDFLAGS}"
+
+DEPENDS += "go-cross"
+DEPENDS_class-native += "go-native"
+
+INHIBIT_PACKAGE_STRIP = "1"
+
+FILES_${PN}-staticdev += "${GOSRC_FINAL}/${GO_IMPORT}"
+FILES_${PN}-staticdev += "${GOPKG_FINAL}/${GO_IMPORT}*"
+
+GO_INSTALL ?= "${GO_IMPORT}/..."
+
+do_go_compile() {
+	GOPATH=${S}:${STAGING_LIBDIR}/${TARGET_SYS}/go go env
+	if test -n "${GO_INSTALL}" ; then
+		GOPATH=${S}:${STAGING_LIBDIR}/${TARGET_SYS}/go go install -v ${GO_INSTALL}
+	fi
+}
+
+do_go_install() {
+	rm -rf ${WORKDIR}/staging
+	install -d ${WORKDIR}/staging${GOROOT_FINAL} ${D}${GOROOT_FINAL}
+	tar -C ${S} -cf - . | tar -C ${WORKDIR}/staging${GOROOT_FINAL} -xpvf -
+
+	find ${WORKDIR}/staging${GOROOT_FINAL} \( \
+		-name \*.indirectionsymlink -o \
+		-name .git\* -o                \
+		-name .hg -o                   \
+		-name .svn -o                  \
+		-name .pc\* -o                 \
+		-name patches\*                \
+		\) -print0 | \
+	xargs -r0 rm -rf
+
+	tar -C ${WORKDIR}/staging${GOROOT_FINAL} -cf - . | \
+	tar -C ${D}${GOROOT_FINAL} -xpvf -
+
+	chown -R root:root "${D}${GOROOT_FINAL}"
+
+	if test -e "${D}${GOBIN_FINAL}" ; then
+		install -d -m 0755 "${D}${bindir}"
+		find "${D}${GOBIN_FINAL}" ! -type d -print0 | xargs -r0 mv --target-directory="${D}${bindir}"
+		rmdir -p "${D}${GOBIN_FINAL}" || true
+	fi
+}
+
+do_compile() {
+	do_go_compile
+}
+
+do_install() {
+	do_go_install
+}

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+require go-common.inc
+
+PV = "1.4.3"
+GO_BASEVERSION = "1.4"
+FILESEXTRAPATHS_prepend := "${FILE_DIRNAME}/go-${GO_BASEVERSION}:"
+
+SRC_URI += "\
+        file://016-armhf-elf-header.patch \
+        file://go-cross-backport-cmd-link-support-new-386-amd64-rel.patch \
+        file://syslog.patch \
+"
+
+LIC_FILES_CHKSUM = "file://LICENSE;md5=591778525c869cdde0ab5a1bf283cd81"
+SRC_URI[md5sum] = "dfb604511115dd402a77a553a5923a04"
+SRC_URI[sha256sum] = "9947fc705b0b841b5938c48b22dc33e9647ec0752bae66e50278df4f23f64959"

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+Description: Use correct ELF header for armhf binaries.
+Author: Adam Conrad <[email protected]>
+Last-Update: 2013-07-08
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <[email protected]>
+
+Index: go/src/cmd/ld/elf.c
+===================================================================
+--- go.orig/src/cmd/ld/elf.c	2015-02-20 10:49:58.763451586 -0800
++++ go/src/cmd/ld/elf.c	2015-02-20 10:49:27.895478521 -0800
+@@ -57,7 +57,11 @@
+ 	case '5':
+ 		// we use EABI on both linux/arm and freebsd/arm.
+ 		if(HEADTYPE == Hlinux || HEADTYPE == Hfreebsd)
+-			hdr.flags = 0x5000002; // has entry point, Version5 EABI
++#ifdef __ARM_PCS_VFP
++			hdr.flags = 0x5000402; // has entry point, Version5 EABI, hard-float ABI
++#else
++			hdr.flags = 0x5000202; // has entry point, Version5 EABI, soft-float ABI
++#endif
+ 		// fallthrough
+ 	default:
+ 		hdr.phoff = ELF32HDRSIZE;	/* Must be be ELF32HDRSIZE: first PHdr must follow ELF header */

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+require go-common.inc
+
+PV = "1.6.3"
+GO_BASEVERSION = "1.6"
+FILESEXTRAPATHS_prepend := "${FILE_DIRNAME}/go-${GO_BASEVERSION}:"
+
+LIC_FILES_CHKSUM = "file://LICENSE;md5=591778525c869cdde0ab5a1bf283cd81"
+
+SRC_URI += "\
+       file://armhf-elf-header.patch \
+       file://syslog.patch \
+       file://fix-target-cc-for-build.patch \
+       file://fix-cc-handling.patch \
+       file://split-host-and-target-build.patch \
+       file://gotooldir.patch \
+"
+SRC_URI[md5sum] = "bf3fce6ccaadd310159c9e874220e2a2"
+SRC_URI[sha256sum] = "6326aeed5f86cf18f16d6dc831405614f855e2d416a91fd3fdc334f772345b00"
+

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index 0000000000..1e3a16b319
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+Encode arm EABI ( hard/soft ) calling convention in ELF header
+
+Signed-off-by: Khem Raj <[email protected]>
+Upstream-Status: Pending
+Index: go/src/cmd/link/internal/ld/elf.go
+===================================================================
+--- go.orig/src/cmd/link/internal/ld/elf.go
++++ go/src/cmd/link/internal/ld/elf.go
+@@ -827,7 +827,13 @@
+ 	// 32-bit architectures
+ 	case '5':
+ 		// we use EABI on both linux/arm and freebsd/arm.
+-		if HEADTYPE == obj.Hlinux || HEADTYPE == obj.Hfreebsd {
++		if HEADTYPE == obj.Hlinux {
++			if Ctxt.Goarm == 7 {
++				ehdr.flags = 0x5000402 // has entry point, Version5 EABI, hard float
++			} else {
++				ehdr.flags = 0x5000202 // has entry point, Version5 EABI, soft float
++			}
++		} else if HEADTYPE == obj.Hfreebsd {
+ 			// We set a value here that makes no indication of which
+ 			// float ABI the object uses, because this is information
+ 			// used by the dynamic linker to compare executables and

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index 0000000000..2f6156ecd2
@@ -0,0 +1,17 @@
+Put Quotes around CC_FOR_TARGET since it can be mutliple words e.g. in OE
+
+Signed-off-by: Khem Raj <[email protected]>
+Upstream-Status: Pending
+Index: go/src/make.bash
+===================================================================
+--- go.orig/src/make.bash	2015-07-29 13:28:11.334031696 -0700
++++ go/src/make.bash	2015-07-29 13:36:55.814465630 -0700
+@@ -158,7 +158,7 @@
+ fi
+ 
+ echo "##### Building packages and commands for $GOOS/$GOARCH."
+-CC=$CC_FOR_TARGET "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd
++CC="$CC_FOR_TARGET" "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd
+ echo
+ 
+ rm -f "$GOTOOLDIR"/go_bootstrap

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+Define tooldir in relation to GOTOOLDIR env var
+
+Signed-off-by: Khem Raj <[email protected]>
+Upstream-Status: Pending
+Index: go/src/go/build/build.go
+===================================================================
+--- go.orig/src/go/build/build.go
++++ go/src/go/build/build.go
+@@ -1388,7 +1388,7 @@ func init() {
+ }
+ 
+ // ToolDir is the directory containing build tools.
+-var ToolDir = filepath.Join(runtime.GOROOT(), "pkg/tool/"+runtime.GOOS+"_"+runtime.GOARCH)
++var ToolDir = envOr("GOTOOLDIR", filepath.Join(runtime.GOROOT(), "pkg/tool/"+runtime.GOOS+"_"+runtime.GOARCH))
+ 
+ // IsLocalImport reports whether the import path is
+ // a local import path, like ".", "..", "./foo", or "../foo".
+Index: go/src/cmd/go/build.go
+===================================================================
+--- go.orig/src/cmd/go/build.go
++++ go/src/cmd/go/build.go
+@@ -1312,7 +1312,7 @@ func (b *builder) build(a *action) (err
+ 		}
+ 
+ 		cgoExe := tool("cgo")
+-		if a.cgo != nil && a.cgo.target != "" {
++		if a.cgo != nil && a.cgo.target != "" && os.Getenv("GOTOOLDIR") == "" {
+ 			cgoExe = a.cgo.target
+ 		}
+ 		outGo, outObj, err := b.cgo(a.p, cgoExe, obj, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, cxxfiles, a.p.MFiles)

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index 0000000000..5c3004e875
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+require go-common.inc
+
+PV = "1.7.4"
+GO_BASEVERSION = "1.7"
+FILESEXTRAPATHS_prepend := "${FILE_DIRNAME}/go-${GO_BASEVERSION}:"
+
+LIC_FILES_CHKSUM = "file://LICENSE;md5=5d4950ecb7b26d2c5e4e7b4e0dd74707"
+
+SRC_URI += "\
+       file://armhf-elf-header.patch \
+       file://syslog.patch \
+       file://fix-target-cc-for-build.patch \
+       file://fix-cc-handling.patch \
+       file://split-host-and-target-build.patch \
+       file://gotooldir.patch \
+"
+SRC_URI[md5sum] = "49c1076428a5d3b5ad7ac65233fcca2f"
+SRC_URI[sha256sum] = "4c189111e9ba651a2bb3ee868aa881fab36b2f2da3409e80885ca758a6b614cc"
+

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index 0000000000..1e3a16b319
@@ -0,0 +1,23 @@
+Encode arm EABI ( hard/soft ) calling convention in ELF header
+
+Signed-off-by: Khem Raj <[email protected]>
+Upstream-Status: Pending
+Index: go/src/cmd/link/internal/ld/elf.go
+===================================================================
+--- go.orig/src/cmd/link/internal/ld/elf.go
++++ go/src/cmd/link/internal/ld/elf.go
+@@ -827,7 +827,13 @@
+ 	// 32-bit architectures
+ 	case '5':
+ 		// we use EABI on both linux/arm and freebsd/arm.
+-		if HEADTYPE == obj.Hlinux || HEADTYPE == obj.Hfreebsd {
++		if HEADTYPE == obj.Hlinux {
++			if Ctxt.Goarm == 7 {
++				ehdr.flags = 0x5000402 // has entry point, Version5 EABI, hard float
++			} else {
++				ehdr.flags = 0x5000202 // has entry point, Version5 EABI, soft float
++			}
++		} else if HEADTYPE == obj.Hfreebsd {
+ 			// We set a value here that makes no indication of which
+ 			// float ABI the object uses, because this is information
+ 			// used by the dynamic linker to compare executables and

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new file mode 100644
index 0000000000..2f6156ecd2
@@ -0,0 +1,17 @@
+Put Quotes around CC_FOR_TARGET since it can be mutliple words e.g. in OE
+
+Signed-off-by: Khem Raj <[email protected]>
+Upstream-Status: Pending
+Index: go/src/make.bash
+===================================================================
+--- go.orig/src/make.bash	2015-07-29 13:28:11.334031696 -0700
++++ go/src/make.bash	2015-07-29 13:36:55.814465630 -0700
+@@ -158,7 +158,7 @@
+ fi
+ 
+ echo "##### Building packages and commands for $GOOS/$GOARCH."
+-CC=$CC_FOR_TARGET "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd
++CC="$CC_FOR_TARGET" "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd
+ echo
+ 
+ rm -f "$GOTOOLDIR"/go_bootstrap

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index 0000000000..94670259f2
@@ -0,0 +1,30 @@
+Define tooldir in relation to GOTOOLDIR env var
+
+Signed-off-by: Khem Raj <[email protected]>
+Upstream-Status: Pending
+Index: go/src/go/build/build.go
+===================================================================
+--- go.orig/src/go/build/build.go
++++ go/src/go/build/build.go
+@@ -1388,7 +1388,7 @@ func init() {
+ }
+ 
+ // ToolDir is the directory containing build tools.
+-var ToolDir = filepath.Join(runtime.GOROOT(), "pkg/tool/"+runtime.GOOS+"_"+runtime.GOARCH)
++var ToolDir = envOr("GOTOOLDIR", filepath.Join(runtime.GOROOT(), "pkg/tool/"+runtime.GOOS+"_"+runtime.GOARCH))
+ 
+ // IsLocalImport reports whether the import path is
+ // a local import path, like ".", "..", "./foo", or "../foo".
+Index: go/src/cmd/go/build.go
+===================================================================
+--- go.orig/src/cmd/go/build.go
++++ go/src/cmd/go/build.go
+@@ -1312,7 +1312,7 @@ func (b *builder) build(a *action) (err
+ 		}
+ 
+ 		cgoExe := tool("cgo")
+-		if a.cgo != nil && a.cgo.target != "" {
++		if a.cgo != nil && a.cgo.target != "" && os.Getenv("GOTOOLDIR") == "" {
+ 			cgoExe = a.cgo.target
+ 		}
+ 		outGo, outObj, err := b.cgo(a.p, cgoExe, obj, pcCFLAGS, pcLDFLAGS, cgofiles, gccfiles, cxxfiles, a.p.MFiles)

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index 0000000000..8897cb1157
@@ -0,0 +1,21 @@
+SUMMARY = "Go programming language compiler"
+DESCRIPTION = " The Go programming language is an open source project to make \
+ programmers more productive. Go is expressive, concise, clean, and\
+ efficient. Its concurrency mechanisms make it easy to write programs\
+ that get the most out of multicore and networked machines, while its\
+ novel type system enables flexible and modular program construction.\
+ Go compiles quickly to machine code yet has the convenience of\
+ garbage collection and the power of run-time reflection. It's a\
+ fast, statically typed, compiled language that feels like a\
+ dynamically typed, interpreted language."
+
+HOMEPAGE = " http://golang.org/"
+LICENSE = "BSD-3-Clause"
+
+inherit goarch
+
+SRC_URI = "http://golang.org/dl/go${PV}.src.tar.gz"
+S = "${WORKDIR}/go"
+B = "${S}"
+
+INHIBIT_PACKAGE_DEBUG_SPLIT = "1"

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index 0000000000..bbf3c0dd73
@@ -0,0 +1,2 @@
+require ${PN}.inc
+require go-${PV}.inc

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index 0000000000..2f590338c4
@@ -0,0 +1,4 @@
+require go.inc
+require go-${PV}.inc
+
+BBCLASSEXTEND = "cross"

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index 0000000000..8186427933
@@ -0,0 +1,4 @@
+require go-${PV}.inc
+require go.inc
+
+BBCLASSEXTEND = "cross"

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index 0000000000..0253c40411
@@ -0,0 +1,10 @@
+// You can edit this code!
+// Click here and start typing.
+// taken from https://golang.org/
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hello, 世界")
+}

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index 0000000000..c63268116b
@@ -0,0 +1,10 @@
+DESCRIPTION = "This is a simple example recipe that cross-compiles a Go program."
+SECTION = "examples"
+HOMEPAGE = "https://golang.org/"
+
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+S = "${WORKDIR}"
+
+inherit go

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index 0000000000..af9d3b7454
@@ -0,0 +1,15 @@
+require go-examples.inc
+
+
+SRC_URI += " \
+  file://helloworld.go \
+"
+
+do_compile() {
+  go build helloworld.go
+}
+
+do_install() {
+  install -d "${D}/${bindir}"
+  install -m 0755 "${S}/helloworld" "${D}/${bindir}"
+}

index e10864d99b..293194d39a 100644
@@ -21,7 +21,7 @@ export CGO_CPPFLAGS = "${TARGET_CPPFLAGS}"
 export CGO_CXXFLAGS = "${TARGET_CC_ARCH}${TOOLCHAIN_OPTIONS} ${TARGET_CXXFLAGS}"
 export CGO_LDFLAGS = "${TARGET_CC_ARCH}${TOOLCHAIN_OPTIONS} ${TARGET_LDFLAGS}"
 
-DEPENDS += "go-cross"
+DEPENDS += "go-cross-${TARGET_ARCH}"
 DEPENDS_class-native += "go-native"
 
 INHIBIT_PACKAGE_STRIP = "1"

new file mode 100644
index 0000000000..fa9c339b93
@@ -0,0 +1,10 @@
+inherit cross
+
+DEPENDS += "gcc-cross-${TARGET_ARCH}"
+
+PN = "go-cross-${TARGET_ARCH}"
+
+FILESEXTRAPATHS =. "${FILE_DIRNAME}/go-cross:"
+
+GOROOT_FINAL ="${libdir}/go"
+export GOROOT_FINAL

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index 0000000000..56ee084b10
@@ -0,0 +1,5 @@
+require go-cross.inc
+require go_${PV}.bb
+
+# Go binaries are not understood by the strip tool.
+INHIBIT_SYSROOT_STRIP = "1"

index 8186427933..e7a6ab277e 100644
@@ -1,4 +1,2 @@
 require go-${PV}.inc
 require go.inc
-
-BBCLASSEXTEND = "cross"