CGO_ENABLED=0 build fails on go 1.12

[wrdls]

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

$ go version

go version go1.12.1 linux/amd64

Does this issue reproduce with the latest release?

Yes.

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

kernel version Output

$ uname -a
Linux thinkpad 5.0.3-arch1-1-ARCH #1 SMP PREEMPT Tue Mar 19 13:09:13 UTC 2019 x86_64 GNU/Linux

go env Output

$ go env
GOARCH="amd64"

GOBIN="/home/ward/go/bin"

GOCACHE="/home/ward/.cache/go-build"

GOEXE=""

GOFLAGS=""

GOHOSTARCH="amd64"

GOHOSTOS="linux"

GOOS="linux"

GOPATH="/home/ward/go"

GOPROXY=""

GORACE=""

GOROOT="/usr/lib/go"

GOTMPDIR=""

GOTOOLDIR="/usr/lib/go/pkg/tool/linux_amd64"

GCCGO="gccgo"

CC="gcc"

CXX="g++"

CGO_ENABLED="1"

GOMOD="/home/ward/go/src/bitbucket.org/factionxyz/test-env/go.mod"

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 -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build544707537=/tmp/go-build -gno-record-gcc-switches"

What did you do?

$ CGO_ENABLED=0 go build -a
# bitbucket.org/factionxyz/test-env
loadinternal: cannot find runtime/cgo

What did you expect to see?

Go compiles without issues like it did with 1.11.

$ CGO_ENABLED=0 ~/Downloads/go1.11.6.linux-amd64/bin/go build -a

What did you see instead?

Compilation exited with errors.

loadinternal: cannot find runtime/cgo

[agnivade]

Please give us the exact steps to reproduce this issue. Thanks.

[wrdls]

Ok, I found I actually have https://www.archlinux.org/packages/community/x86_64/go-pie/ installed. I must have missed the package change.

I guess this issue can be closed.

But as a follow-up question. Is a build with CGO_ENABLED=0 supposed to work when PIE is enabled?

Some info about PIE: https://wiki.gentoo.org/wiki/Hardened/Toolchain#Position_Independent_Executables_.28PIEs.29

[agnivade]

/cc @ianlancetaylor for cgo

[ianlancetaylor]

We don't currently support PIE when not using cgo. There is some background at #18968.