Hello all,
I try to build a Go library that uses Lua. This library will be used
together with an executable that contains the Lua functions, so I (believe)
I don't need to have the dynamic Lua library.
My code:
~~~
package main
/*
#include <lauxlib.h>
#include <lua.h>
#include <lualib.h>
#include <stdlib.h>
#cgo CFLAGS: -I/opt/homebrew/opt/lua@5.3/include/lua
*/
import "C"
import "fmt"
func foo(L *C.lua_State) int {
fmt.Println(C.lua_gettop(L))
return 0
}
func main() {}
~~~
and the command line to compile (on the latest macOS X)
go build -buildmode=c-shared mylib.go
but the output is:
# command-line-arguments
/opt/homebrew/Cellar/go/1.21.0/libexec/pkg/tool/darwin_arm64/link: running
cc failed: exit status 1
ld: Undefined symbols:
_lua_gettop, referenced from:
__cgo_513e18cdc587_Cfunc_lua_gettop in 000001.o
clang: error: linker command failed with exit code 1 (use -v to see
invocation)
How can I fix this?
I know I can set the environment variable CGO_LDFLAGS to "-undefined
dynamic_lookup" before running the compile command, but this 1) does not
sound like a good fix and 2) doesn't work for my cross commpile environment
using migw on linux.
Any suggestions?
Thank you very much
Patrick
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