go: Update to 1.15.5

Define CXX_FOR_TARGET and CC_FOR_TARGET for target go
since we are cross building it, it helps in defining the compiler
for cgo on target

backport a patch to fix CGO_LDFLAGS regression like below

Fixes
| Building std for target, linux/arm.
| go build runtime/cgo: invalid flag in go:cgo_ldflag: -Wl,-O1

(From OE-Core rev: a71d1b58e8cf0976a614c49aa2dfe1e0605dfe95)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta/recipes-devtools/go/go_1.15.bb b/meta/recipes-devtools/go/go_1.15.bb
index cc4c3fe45d..d4812c0f0a 100644
--- a/meta/recipes-devtools/go/go_1.15.bb
+++ b/meta/recipes-devtools/go/go_1.15.bb
@@ -6,6 +6,8 @@ inherit linuxloader
 export GOBUILDMODE=""
 export CGO_ENABLED_riscv64 = ""
 export GO_LDSO = "${@get_linuxloader(d)}"
+export CC_FOR_TARGET = "gcc"
+export CXX_FOR_TARGET = "g++"
 
 # mips/rv64 doesn't support -buildmode=pie, so skip the QA checking for mips/riscv and its
 # variants.