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

$ go version

go version go1.16.3 linux/arm

Does this issue reproduce with the latest release?

yes

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

linux/arm

$ go env
GO111MODULE=""

GOARCH="arm"

GOBIN=""

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

GOENV="/home/pi/.config/go/env"

GOEXE=""

GOFLAGS=""

GOHOSTARCH="arm"

GOHOSTOS="linux"

GOINSECURE=""

GOMODCACHE="/home/pi/go/pkg/mod"

GONOPROXY=""

GONOSUMDB=""

GOOS="linux"

GOPATH="/home/pi/go"

GOPRIVATE=""

GOPROXY="https://proxy.golang.org,direct"

GOROOT="/usr/local/go"

GOSUMDB="sum.golang.org"

GOTMPDIR=""

GOTOOLDIR="/usr/local/go/pkg/tool/linux_arm"

GOVCS=""

GOVERSION="go1.16.3"

GCCGO="gccgo"

GOARM="6"

AR="ar"

CC="gcc"

CXX="g++"

CGO_ENABLED="1"

GOMOD="/home/pi/_src/somefancyapp/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 -marm -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1652971902=/tmp/go-build -gno-record-gcc-switches"

What did you do?

compiling a go-module with cgo and .cxx (swig generated) with the following command on linux/arm:

CGO_LDFLAGS="-no-pie" go build \
	-v -x \
	main.go

What did you expect to see?

the cxx compiler (g++) command as a linker frontend is started with the -no-pie parameter and the without the -pie paramater

What did you see instead?

as you can see, g++ ist started with -no-pie and -pie. the second ond overwrites the first one. But my static library (mylib1) is compiled without -fPIC, so the command fails with "/usr/bin/ld: somefancyapp/libs/linux/arm/libmylib1.a(lib1.o): relocation R_ARM_MOVW_ABS_NC against `a local symbol' can not be used when making a shared object; recompile with -fPIC"

g++ -I ./somefancyapp -fPIC -marm -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK/b035=/tmp/go-build -gno-record-gcc-switches -o $WORK/b035/_cgo_.o $WORK/b035/_cgo_main.o $WORK/b035/_x001.o $WORK/b035/_x002.o $WORK/b035/_x003.o $WORK/b035/_x004.o -no-pie -L/home/pi/_src/somefancyapp/somepackage -L/home/pi/_src/somefancyapp/somepackage/libs/linux/arm -lMTFxpro -lmylib1 -pie

The reason

In the toolchain is a hardcoded condition wich add's -pie to the command.

I can't find any reason for the statement we need to use -pie for Linux/ARM to get accurate imported sym.

Additionaly i checked out the master branch, uncommented ot this lines, build a local patched go toolchain.
Compiling and testing my app with the patched toolchain works well.