Cross compile from alpine to openbsd: cannot use _Ctype_size_t(len(b)) (value of type _Ctype_ulong) as _Ctype_uint value in argument to (_C2func_getnameinfo)

[MarcCoquand]

Go version

go version go1.22.4 linux/amd64

Output of go env in your module/workspace:

GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/home/me/.cache/go-build'
GOENV='/home/me/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/home/mccd/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/home/mccd/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/lib/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='local'
GOTOOLDIR='/usr/lib/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.22.4'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/home/mccd/builds/sustainably-go/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 -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2635966091=/tmp/go-build -gno-record-gcc-switches'

What did you do?

To cross compile a static binary for OpenBSD when running on Alpine linux, I ran the following

CGO_ENABLED=1 GOOS=openbsd CC=/usr/bin/x86_64-alpine-linux-musl-gcc go build --ldflags '-linkmode external -extldflags -static' .

Cgo was a necessity because of my use of go-sqlite3

What did you see happen?

# net
/usr/lib/go/src/net/cgo_resold.go:20:76: cannot use _Ctype_size_t(len(b)) (value of type _Ctype_ulong) as _Ctype_uint value in argument to (_C2func_getnameinfo)

I got the following error

What did you expect to see?

I expected it to compile without error

[gabyhelp]

Similar Issues

• cmd/go: problems with cgo_resnew when cross-compiling on freebsd for linux #66839
• cmd/go: build constraints sometimes ineffective for net/cgo_resnew.go on FreeBSD #33101
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• cmd/go: document system setup for cross compiling between linux architectures #47175
• internal compiler error: bad type for ... argument: [2]string #45913
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• cmd/cgo: cannot convert from signed char *_Ctype_schar to char *_Ctype_char #26655
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• cross compiling issue #66642
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[ianlancetaylor]

When you are cross-compiling from Linux to OpenBSD, you must set CC to a C cross-compiler from Linux to OpenBSD. That C cross-compiler must read the OpenBSD header files, not the Linux ones.