Question

我使用版本1.8.5下载了SpiderMonkey源代码然后我通过执行以下命令成功构建了包含文件和静态库：

autoconf2.13
./configure 
make
make install

现在我尝试使用命令g ++

编译以下代码

 /* Include the JSAPI header file to get access to SpiderMonkey. */
   #include "jsapi.h"

 /* The class of the global object. */
    static JSClass global_class = {
"global", JSCLASS_GLOBAL_FLAGS,
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub,
JSCLASS_NO_OPTIONAL_MEMBERS
};

/* The error reporter callback. */
void reportError(JSContext *cx, const char *message, JSErrorReport *report)
{
fprintf(stderr, "%s:%u:%s\n",
        report->filename ? report->filename : "<no filename=\"filename\">",
        (unsigned int) report->lineno,
        message);
}

int main(int argc, const char *argv[])
{
    /* JSAPI variables. */
       JSRuntime *rt;
       JSContext *cx;
       JSObject  *global;

    /* Create a JS runtime. You always need at least one runtime per process. */
       rt = JS_NewRuntime(8 * 1024 * 1024);
       if (rt == NULL)
        return 1;

    /* 
     * Create a context. You always need a context per thread.
     * Note that this program is not multi-threaded.
     */
       cx = JS_NewContext(rt, 8192);
       if (cx == NULL)
        return 1;
       JS_SetOptions(cx, JSOPTION_VAROBJFIX | JSOPTION_JIT | JSOPTION_METHODJIT);
       JS_SetVersion(cx, JSVERSION_LATEST);
       JS_SetErrorReporter(cx, reportError);

    /*
     * Create the global object in a new compartment.
     * You always need a global object per context.
     */
       global = JS_NewCompartmentAndGlobalObject(cx, &global_class, NULL);
       if (global == NULL)
         return 1;

    /*
     * Populate the global object with the standard JavaScript
     * function and object classes, such as Object, Array, Date.
     */
     if (!JS_InitStandardClasses(cx, global))
    return 1;

    /* Your application code here. This may include JSAPI calls
     * to create your own custom JavaScript objects and to run scripts.
     *
     * The following example code creates a literal JavaScript script,
     * evaluates it, and prints the result to stdout.
     *
     * Errors are conventionally saved in a JSBool variable named ok.
     */
    const char *script = "'Hello ' + 'World!'";
    jsval rval;
    JSString *str;
    JSBool ok;
    const char *filename = "noname";
    uintN lineno = 0;

    ok = JS_EvaluateScript(cx, global, script, strlen(script),
                       filename, lineno, &rval);
    if (rval == JS_NULL | rval == JS_FALSE)
    return 1;

    str = JS_ValueToString(cx, rval);
    printf("%s\n", JS_EncodeString(cx, str));

    /* End of your application code */

    /* Clean things up and shut down SpiderMonkey. */
       JS_DestroyContext(cx);
       JS_DestroyRuntime(rt);
       JS_ShutDown();
       return 0;
}

我使用的命令

     " g++ -Ihome/SpiderMonkey/js-1.8.5/js/src/dist/include 
     -Lhome/SpiderMonkey/js1.8.5/js/src/dist/bin -lmozjs185  helloworld.cpp -o             helloworld "

错误是：

In function `main':
helloworld.cpp:(.text+0x6e): undefined reference to `JS_Init'
helloworld.cpp:(.text+0x94): undefined reference to `JS_NewContext'
helloworld.cpp:(.text+0xba): undefined reference to `JS_SetOptions'
helloworld.cpp:(.text+0xcb): undefined reference to `JS_SetVersion'
helloworld.cpp:(.text+0xdc): undefined reference to `JS_SetErrorReporter'
helloworld.cpp:(.text+0xf2): undefined reference to `JS_NewCompartmentAndGlobalObject'
helloworld.cpp:(.text+0x11a): undefined reference to `JS_InitStandardClasses'
helloworld.cpp:(.text+0x191): undefined reference to `JS_EvaluateScript'
helloworld.cpp:(.text+0x1c8): undefined reference to `JS_ValueToString'
helloworld.cpp:(.text+0x1df): undefined reference to `JS_EncodeString'
helloworld.cpp:(.text+0x1f3): undefined reference to `JS_DestroyContext'
helloworld.cpp:(.text+0x1ff): undefined reference to `JS_Finish'
helloworld.cpp:(.text+0x204): undefined reference to `JS_ShutDown'
/tmp/ccUU9may.o:(.data+0x10): undefined reference to `JS_PropertyStub'
/tmp/ccUU9may.o:(.data+0x18): undefined reference to `JS_PropertyStub'
/tmp/ccUU9may.o:(.data+0x20): undefined reference to `JS_PropertyStub'
/tmp/ccUU9may.o:(.data+0x28): undefined reference to `JS_StrictPropertyStub'
/tmp/ccUU9may.o:(.data+0x30): undefined reference to `JS_EnumerateStub'
/tmp/ccUU9may.o:(.data+0x38): undefined reference to `JS_ResolveStub'
/tmp/ccUU9may.o:(.data+0x40): undefined reference to `JS_ConvertStub'
/tmp/ccUU9may.o:(.data+0x48): undefined reference to `JS_FinalizeStub'
 collect2: ld returned 1 exit status

Answer 1

我解决了这个问题，所以我想发布任何其他人面临同样问题的答案。在编译hellowrold.cpp时，你必须在命令中使用的库之前编写helloworld，如下所示

g++ hellowrold.cpp -o helloworld -I/your_path_of_include_folder/include/ -L/your_path_of_shared_libraries/lib -lmozjs185

在C ++应用程序中编译嵌入式spidermonkey javascript引擎

1 个答案: