cross compile from Mac to Linux

[batara666]

> go version
go version go1.18.1 darwin/arm64
> GOOS=linux GOARCH=amd64 CGO_ENABLED=1 go build -trimpath
# runtime/cgo
linux_syscall.c:67:13: error: implicit declaration of function 'setresgid' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
linux_syscall.c:67:13: note: did you mean 'setregid'?
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/unistd.h:593:6: note: 'setregid' declared here
linux_syscall.c:73:13: error: implicit declaration of function 'setresuid' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
linux_syscall.c:73:13: note: did you mean 'setreuid'?
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/unistd.h:595:6: note: 'setreuid' declared here

[mattn]

Your C compiler seems not support cross compiling for Linux.

[malaschitz]

I ended up using Docker. I don't know much about it, but I managed. Command:

docker buildx build --platform=linux/amd64 --target bin --output bin/ .

And here's the important part for from dockerfile:

FROM --platform=$BUILDPLATFORM golang:latest AS build

WORKDIR /src

RUN apt-get update 
RUN apt-get install -y gcc-multilib

ENV CGO_ENABLED=1
ARG TARGETOS TARGETARCH

RUN --mount=target=. \
    --mount=type=cache,target=/root/.cache/go-build \
    --mount=type=cache,target=/go/pkg \
    GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /out/fillip_linux ./cmd

FROM scratch as bin

COPY --from=build /out/fillip_linux ./fillip_linux

[motiejus]

You can use zig as a cross-compiler (many references on the internet how to do it). I am on linux/amd64, so will cross-compile _examples/simple to linux/arm64:

go-sqlite3/_example/simple$ CC="zig cc -target aarch64-linux-musl" GOOS=linux GOARCH=arm64 CGO_ENABLED=1 go build -trimpath  .
go-sqlite3/_example/simple$ file simple
simple: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), static-pie linked, Go BuildID=v0J3H_Y7IQRiQ26cF8Rb/DJMzPVHNAPPpixbjkZNj/Ej2fxeIvLwu1tw80enDk/nnoFyKfir37KeWzAv6b0, with debug_info, not stripped
go-sqlite3/_example/simple$ qemu-aarch64-static ./simple | head -10
0 こんにちわ世界000
1 こんにちわ世界001
2 こんにちわ世界002
3 こんにちわ世界003
4 こんにちわ世界004
5 こんにちわ世界005
6 こんにちわ世界006
7 こんにちわ世界007
8 こんにちわ世界008
9 こんにちわ世界009

You can also use, for example, -target aarch64-linux-gnu.2.32 (or so) to link against glibc 2.32 instead of producting a musl-based static binary.

[LittleKey]

You can use zig as a cross-compiler (many references on the internet how to do it). I am on linux/amd64, so will cross-compile _examples/simple to linux/arm64:

go-sqlite3/_example/simple$ CC="zig cc -target aarch64-linux-musl" GOOS=linux GOARCH=arm64 CGO_ENABLED=1 go build -trimpath  .
go-sqlite3/_example/simple$ file simple
simple: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), static-pie linked, Go BuildID=v0J3H_Y7IQRiQ26cF8Rb/DJMzPVHNAPPpixbjkZNj/Ej2fxeIvLwu1tw80enDk/nnoFyKfir37KeWzAv6b0, with debug_info, not stripped
go-sqlite3/_example/simple$ qemu-aarch64-static ./simple | head -10
0 こんにちわ世界000
1 こんにちわ世界001
2 こんにちわ世界002
3 こんにちわ世界003
4 こんにちわ世界004
5 こんにちわ世界005
6 こんにちわ世界006
7 こんにちわ世界007
8 こんにちわ世界008
9 こんにちわ世界009

You can also use, for example, -target aarch64-linux-gnu.2.32 (or so) to link against glibc 2.32 instead of producting a musl-based static binary.

Work for me!

Macos compile to arm64-linux

brew install zig
CC="zig cc -taget aarch64-linux-musl" CGO_ENABLED=1 GOOS=linux GOARCH=arm64 go build xxx.go -o executable

[steffenfritz]

brew install zig
CC="zig cc -taget aarch64-linux-musl" CGO_ENABLED=1 GOOS=linux GOARCH=arm64 go build xxx.go -o executable

Following your comment @LittleKey, I tried the same but ended up with 7 errors (warnings omitted by flag). Does anyone know how to handle this? This really looks like a problem with the bindings, in combination with the more strict zig.

me@here ~/g/s/g/s/F/c/ft (main) [1]> CC="zig cc -Wno-everything -target aarch64-linux-musl" CGO_ENABLED=1 GOOS=linux GOARCH=arm64 go build
# github.com/mattn/go-sqlite3
sqlite3-binding.c:37644:42: error: use of undeclared identifier 'pread64'
  { "pread64",      (sqlite3_syscall_ptr)pread64,    0  },
                                         ^
sqlite3-binding.c:37662:42: error: use of undeclared identifier 'pwrite64'
  { "pwrite64",     (sqlite3_syscall_ptr)pwrite64,   0  },
                                         ^
sqlite3-binding.c:37801:22: error: invalid application of 'sizeof' to an incomplete type 'struct unix_syscall[]'
    for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
                     ^~~~~~~~~~
sqlite3-binding.c:37810:22: error: invalid application of 'sizeof' to an incomplete type 'struct unix_syscall[]'
    for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
                     ^~~~~~~~~~
sqlite3-binding.c:37837:20: error: invalid application of 'sizeof' to an incomplete type 'struct unix_syscall[]'
  for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
                   ^~~~~~~~~~
sqlite3-binding.c:37854:16: error: invalid application of 'sizeof' to an incomplete type 'struct unix_syscall[]'
    for(i=0; i<ArraySize(aSyscall)-1; i++){
               ^~~~~~~~~~~~~~~~~~~
sqlite3-binding.c:14847:38: note: expanded from macro 'ArraySize'
#define ArraySize(X)    ((int)(sizeof(X)/sizeof(X[0])))
                                     ^~~
sqlite3-binding.c:37858:14: error: invalid application of 'sizeof' to an incomplete type 'struct unix_syscall[]'
  for(i++; i<ArraySize(aSyscall); i++){
             ^~~~~~~~~~~~~~~~~~~
sqlite3-binding.c:14847:38: note: expanded from macro 'ArraySize'
#define ArraySize(X)    ((int)(sizeof(X)/sizeof(X[0])))
                                     ^~~
7 errors generated.

[JonathanHope]

There is a solution in this issue: #1164.

CGO_CFLAGS="-D_LARGEFILE64_SOURCE"