Finally made it working.
cgo_test.go
-------------------------------
package cgo_test
/*
#include
void out() {
printf("Hello world from c\n");
}
*/
import "C"
func Out() {
C.out()
}
--------------------------------------------------------
main.go
--------------------------------------------------------
package main
import "cgo_test"
func main() {
cgo_test.Out()
}
--------------------------------------------------------
Makefile
--------------------------------------------------------
include ../go/src/Make.inc
TARG=cgo_test
CGOFILES=cgo_test.go
CLEANFILES+=main
include ../go/src/Make.pkg
main: install main.go
$(GC) main.go
$(LD) -o $@ main.$O
The most annoy error message I got is something like:
gomake main
main.go:6: cannot refer to unexported name cgo_test.out
main.go:6: undefined: cgo_test.out
It seems that GO only export Initcap names by default.
