cmd/link: duplicate symbol runtime.exit

[hugelgupf]

What version of Go are you using (go version)?

$ go version
go version go1.13.4 linux/amd64

Does this issue reproduce with the latest release?

afaict.

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/usr/local/google/home/chrisko/.cache/go-build"
GOENV="/usr/local/google/home/chrisko/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/usr/local/google/home/chrisko/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/lib/google-golang"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/lib/google-golang/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build430274013=/tmp/go-build -gno-record-gcc-switc
hes"

What did you do?

$ go get github.com/hugelgupf/p9/cmd/p9ufs
$ cd $GOPATH/github.com/hugelgupf/p9/cmd/p9ufs
$ GOARCH=mips go build 
# github.com/hugelgupf/p9/cmd/p9ufs
2020/01/19 12:18:10 duplicate symbol runtime.exit (types 1 and 1) in runtime and $WORK/b005/_pkg_.a(sys_linux_mipsx.)
$ GOARCH=mips go1.12 build
$ echo $?
0
$ go1.12 version
go version go1.12 linux/amd64

If you add github.com/djdv/p9 as a remote and checkout restream/ipfs (adds support for more GOARCH/GOOS), you can see different errors in combination with other architectures:

--> darwin/arm
# github.com/hugelgupf/p9/cmd/p9ufs
runtime.save_g: relocation target runtime.read_tls_fallback not defined
runtime.load_g: relocation target runtime.read_tls_fallback not defined
runtime._initcgo: relocation target runtime.read_tls_fallback not defined
xx_cgo_panicmem: relocation target runtime.exit not defined for ABI0 (but is defined for ABIInternal)
--> linux/arm64
--> windows/arm64
cmd/go: unsupported GOOS/GOARCH pair windows/arm64
--> darwin/arm64
# github.com/hugelgupf/p9/cmd/p9ufs
xx_cgo_panicmem: relocation target runtime.exit not defined for ABI0 (but is defined for ABIInternal)

What did you expect to see?

builds correctly, like it did with go 1.12

What did you see instead?

failed build.

[hugelgupf]

It seems internal Go has some patches that make this happen. I'll open another bug for other linker problems.