Go build: ldflags are ignored on FreeBSD

[leath-dub]

Go version

go version go1.22.4 freebsd/amd64

Output of go env in your module/workspace:

GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/home/cathalo/.cache/go-build'
GOENV='/home/cathalo/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='freebsd'
GOINSECURE=''
GOMODCACHE='/home/cathalo/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='freebsd'
GOPATH='/home/cathalo/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/home/cathalo/.local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/home/cathalo/.local/go/pkg/tool/freebsd_amd64'
GOVCS=''
GOVERSION='go1.22.4'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='clang'
CXX='clang++'
CGO_ENABLED='1'
GOMOD='/tmp/reprod/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build1171365462=/tmp/go-build -gno-record-gcc-switches'
pc$ go env
GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/home/cathalo/.cache/go-build'
GOENV='/home/cathalo/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='freebsd'
GOINSECURE=''
GOMODCACHE='/home/cathalo/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='freebsd'
GOPATH='/home/cathalo/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/home/cathalo/.local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/home/cathalo/.local/go/pkg/tool/freebsd_amd64'
GOVCS=''
GOVERSION='go1.22.4'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='clang'
CXX='clang++'
CGO_ENABLED='1'
GOMOD='/tmp/reprod/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2268829249=/tmp/go-build -gno-record-gcc-switches'

What did you do?

Here is a small example:

package main

func main() {
	println("Hello: ", Name)
}

If we compile and specify the value of Name:

go build -ldflags "-X main.Name=Cathal"

What did you see happen?

Produces the following error:

# reprod
./main.go:4:21: undefined: Name

What did you expect to see?

I expect it to compile without undefined symbol errors.

[seankhliao]

You still need to define the variable before you can set a value for it.

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