corss compile failed from when build on a mac

[log225]

go env below :

GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/cable/Library/Caches/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/cable/workspace/go/"
GORACE=""
GOROOT="/usr/local/Cellar/go/1.10.1/libexec"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.10.1/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/k0/0qkltxj92tx3f8jd8dqdsxp80000gn/T/go-build490249343=/tmp/go-build -gno-record-gcc-switches -fno-common"

and I input

CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build

the error is:

/usr/local/Cellar/go/1.10.1/libexec/pkg/tool/darwin_amd64/link: running gcc failed: exit status 1
clang: warning: argument unused during compilation: '-nopie' [-Wunused-command-line-argument]
ld: warning: ignoring file /var/folders/k0/0qkltxj92tx3f8jd8dqdsxp80000gn/T/go-link-890000680/go.o, file was built for unsupported file format ( 0x7F 0x45 0x4C 0x46 0x02 0x01 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 ) which is not the architecture being linked (x86_64): /var/folders/k0/0qkltxj92tx3f8jd8dqdsxp80000gn/T/go-link-890000680/go.o
Undefined symbols for architecture x86_64:
  "__cgo_topofstack", referenced from:
      __cgo_145d76c7925b_Cfunc_sqlite3_backup_finish in 000001.o
      __cgo_145d76c7925b_Cfunc_sqlite3_backup_init in 000001.o
      __cgo_145d76c7925b_Cfunc_sqlite3_backup_pagecount in 000001.o
      __cgo_145d76c7925b_Cfunc_sqlite3_backup_remaining in 000001.o
      __cgo_145d76c7925b_Cfunc_sqlite3_backup_step in 000001.o
      __cgo_145d76c7925b_Cfunc_sqlite3_user_data in 000002.o
      __cgo_145d76c7925b_Cfunc_sqlite3_value_blob in 000002.o
      ...
  "__cgoexp_145d76c7925b_callbackTrampoline", referenced from:
      _callbackTrampoline in 000000.o
  "__cgoexp_145d76c7925b_commitHookTrampoline", referenced from:
      _commitHookTrampoline in 000000.o
  "__cgoexp_145d76c7925b_compareTrampoline", referenced from:
      _compareTrampoline in 000000.o
  "__cgoexp_145d76c7925b_doneTrampoline", referenced from:
      _doneTrampoline in 000000.o
  "__cgoexp_145d76c7925b_rollbackHookTrampoline", referenced from:
      _rollbackHookTrampoline in 000000.o
  "__cgoexp_145d76c7925b_stepTrampoline", referenced from:
      _stepTrampoline in 000000.o
  "__cgoexp_145d76c7925b_updateHookTrampoline", referenced from:
      _updateHookTrampoline in 000000.o
  "_crosscall2", referenced from:
      _callbackTrampoline in 000000.o
      _stepTrampoline in 000000.o
      _doneTrampoline in 000000.o
      _compareTrampoline in 000000.o
      _commitHookTrampoline in 000000.o
      _rollbackHookTrampoline in 000000.o
      _updateHookTrampoline in 000000.o
      ...
  "_main", referenced from:
     implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I have installed the gcc-4.8.1-for-linux64.dmg on my mac.
then I changed this line in sqlite3.go

#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DHAVE_USLEEP=1
#cgo !linux,!android CFLAGS: -DHAVE_PREAD64=1 -DHAVE_PWRITE64=1

but still error……

[mattn]

Please read README.

[mattn]

You need set CC to cross compiler.

[mcolburn]

For anyone looking for a solution to compile from Mac to Windows amd64 and include sqlite, if you use Homebrew:

brew install mingw-w64

Then to build:

GOOS="windows" GOARCH="amd64" CGO_ENABLED="1" CC="/usr/local/opt/mingw-w64/bin/x86_64-w64-mingw32-gcc" go build

This worked for me. I used information from: docwhat's post.

[Peakchen]

if use win x86, how can i complier? what to set ?

[gabstv]

if use win x86, how can i complier? what to set ?

If you mean from macOS to windows x86 32bit:

export GOOS=windows
export GOARCH=386
export CGO_ENABLED=1
export CC=i686-w64-mingw32-gcc
export OS=windows
export ARCH=386

go build -ldflags "-s -w" -o etc.exe main.go

I'm trying to build from macOS to linux amd64, but without success.

Does anybody have a set of envs/configs (CC, flags) that works?

My gcc is trying to link with the macOS stdlib.h (of Commandlinetools) instead of the non darwin header files, even when I set the CPATH :

export GOOS=linux
export GOARCH=amd64
export CGO_ENABLED=1
export CC=gcc-9
export OS=linux
export ARCH=amd64
export CGO_CPPFLAGS="-I /usr/local/Cellar/gcc/9.1.0/include/c++/9.1.0"

go build -ldflags "-s -w" -o example.bin main.go

Output:

# runtime/cgo
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/stdlib.h:61,
                 from /usr/local/Cellar/gcc/9.1.0/include/c++/9.1.0/stdlib.h:30,
                 from _cgo_export.c:3:
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/Availability.h:257:22: error: missing binary operator before token "("
  257 |     #if __has_builtin(__is_target_arch)
      |                      ^
make: *** [build-linux] Error 2

[vishnukvmd]

If someone else is struggling with cross-compilations issues on OSX, I highly recommend xgo.

Steps:

• Install xgo (go get github.com/karalabe/xgo).
• Ensure that your project is within your GOPATH.
• Run xgo ./path/to/project.
• Profit.

[anacrolix]

@vishnukvmd what if you're using Go modules?

[vishnukvmd]

@anacrolix Placing your project inside /Users/{user}/go/src/{project} should help.

[anacrolix]

I used https://blog.filippo.io/easy-windows-and-linux-cross-compilers-for-macos/ and https://www.arp242.net/static-go.html. Cheers.