Is gcc_android.c being used?

[ashishb]

I am trying to see how src/runtime/cgo/gcc_android.c is being used by golang while digging into #25035

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

$ go version
1.11.5

Does this issue reproduce with the latest release?

Yes

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

go env Output

$ go env
GOARCH="amd64"

GOBIN=""

GOCACHE="/Users/ashishb/Library/Caches/go-build"

GOEXE=""

GOFLAGS=""

GOHOSTARCH="amd64"

GOHOSTOS="darwin"

GOOS="darwin"

GOPATH="/Users/ashishb/go"

GOPROXY=""

GORACE=""

GOROOT="/usr/local/Cellar/go/1.11.5/libexec"

GOTMPDIR=""

GOTOOLDIR="/usr/local/Cellar/go/1.11.5/libexec/pkg/tool/darwin_amd64"

GCCGO="gccgo"

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=/var/folders/0g/jlcvgtb123s_f9rlml8w_3x80000gn/T/go-build829902418=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

Delete src/runtime/cgo/gcc_android.c and build goland using src/all.bash.

What did you expect to see?

If gcc_android.c is being used, I would have expected that with a high likelihood some compilation would have failed.

What did you see instead?

Compilation of golang succeeded without any issues.

[ianlancetaylor]

We don't usually use the issue tracker for questions. You will get better answers on a forum such as golang-nuts; see https://golang.org/wiki/Questions. Thanks.

The file runtime/cgo/gcc_android.c is only used when building for Android systems, so deleting it will not cause a problem if you are not building for an Android system. If you have an Android cross-compiler installed, try running something like GOARCH=arm GOOS=android go build x.go where x.go is a program that uses cgo. I would expect that to fail if runtime/cgo/gcc_android.c is deleted.