cmd/go: -compiler=gccgo: fork/exec no such file or directory

[xuqingsz]

Please answer these questions before submitting your issue. Thanks!

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

go version go1.7 linux/amd64

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

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/root/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build038947788=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"

What did you do?

A simple helloworld.go program. GC compiler compiled ok.
For some reason, instead, I need to compile with gccgo, but could never get it to compile.
Any insights are appreciated.
I also have a follow up question on whether gccgo would compile the program statically, or dynamically.

% cat helloworld.go 
package main
import "fmt"
func main() {
    fmt.Println("hello world")
}

%  go build -compiler gccgo helloworld.go 
go build command-line-arguments: : fork/exec : no such file or directory
% go build -compiler gccgo -gccgoflags '-static' helloworld.go
go build command-line-arguments: : fork/exec : no such file or directory
% go build -compiler gccgo -gccgoflags '-static-libgo' helloworld.go
go build command-line-arguments: : fork/exec : no such file or directory

With the -x option:

% go build -compiler gccgo -gccgoflags '-static-libgo' -x helloworld.go
WORK=/tmp/go-build148131806
mkdir -p $WORK/command-line-arguments/_obj/
mkdir -p $WORK/command-line-arguments/_obj/exe/
cd /root/tmp
"" -I $WORK -c -g -m64 -fgo-relative-import-path=_/root/tmp -o $WORK/command-line-arguments/_obj/_go_.o -static-libgo ./helloworld.go
go build command-line-arguments: : fork/exec : no such file or directory

% gcc --version
gcc (GCC) 4.9.2 20150212 (Red Hat 4.9.2-6)

What did you expect to see?

Program compiles and generates an executable.

What did you see instead?

'no such file or directory'

[ianlancetaylor]

Do you actually have gccgo installed on your system?

This looks like a very bad error message, but even if we fix that it still won't work for you.

[cwedgwood]

@xuqingsz I've seen this when gcc[go] isn't in PATH.

What does

gccgo --version

say?

[xuqingsz]

I did put this issue off for some time. But you are right! This did the fix for me. Thanks.

[ianlancetaylor]

Thanks for the update. I'm going to reopen this to get a better error message.

[gopherbot]

CL https://golang.org/cl/40250 mentions this issue.