我正在尝试构建一个Go程序,它使用外部C代码作为Gtk +的接口。
这是我得到的基本Go代码(ui.h.go):
#ifndef __UI_H__
#define __UI_H__
#include <glib.h>
#include <stdlib.h>
#include <string.h>
G_BEGIN_DECLS
void ShowWindow (void);
void Init (gchar** args, int args_length1);
void Main (void);
G_END_DECLS
#endif
C代码从vala编译成目标文件(ui.o)和头文件(ui.h):
go build ui.h.go
当我尝试# command-line-arguments
/tmp/go-build916459533/command-line-arguments/_obj/ui.h.cgo2.o: In function `_cgo_80fc53cbf347_Cfunc_Init':
./ui.h.go:37: undefined reference to `Init'
/tmp/go-build916459533/command-line-arguments/_obj/ui.h.cgo2.o: In function `_cgo_80fc53cbf347_Cfunc_Main':
./ui.h.go:46: undefined reference to `Main'
/tmp/go-build916459533/command-line-arguments/_obj/ui.h.cgo2.o: In function `_cgo_80fc53cbf347_Cfunc_ShowWindow':
./ui.h.go:55: undefined reference to `ShowWindow'
collect2: error: ld returned 1 exit status
时,我得到了:
ui.h.go
哪个是合乎逻辑的,我没有提供我的目标文件。但是,如果我在//#cgo LDFLAGS: ui.o
//#cgo pkg-config: gtk+-3.0
//#include "ui.h"
import "C"
的cgo标题中指定它...
# command-line-arguments
/usr/local/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
ui.o:(.bss+0x0): multiple definition of `window'
/tmp/go-link-461834384/000000.o:/home/oleg/Документы/Projects/rasp/ui.h.go:38: first defined here
ui.o: In function `ShowWindow':
ui.c:(.text+0x0): multiple definition of `ShowWindow'
/tmp/go-link-461834384/000000.o:(.text+0x25): first defined here
ui.o: In function `Init':
ui.c:(.text+0x29): multiple definition of `Init'
/tmp/go-link-461834384/000000.o:(.text+0x4e): first defined here
ui.o: In function `Main':
ui.c:(.text+0x116): multiple definition of `Main'
/tmp/go-link-461834384/000000.o:(.text+0x13b): first defined here
collect2: error: ld returned 1 exit status
我得到多个定义错误,好像它被链接了两次。
<!DOCTYPE html>
<html>
<head>
<title>TEST</title>
<script type="text/javascript">
function sendToPage(){
var input = document.getElementById("search").value;
//alert(input);
if (input == "happy"){
location.href = "suggestion_happy.html";
return false;
}
else if (input == "sad"){
location.href = "suggestion_sad.html";
return false;
}
else {
alert('Invalid Input.');
}
}
</script>
</head>
<body>
<div>
<input type="text" method="put" id="search" placeholder="Search" value="">
<input type='submit' onclick="sendToPage();" />
</div>
</body>
</html>
如何正确地将我的ui.o文件链接到Go程序? 谢谢。
答案 0 :(得分:2)
好吧,我发现cgo确实与静态库链接得很好。因此,我决定将ui.o
归档到libui.a
并使用#cgo LDFLAGS: -L. -lui
进行关联,并且工作正常。