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javascript - 编译嵌入式 SpiderMonkey 程序时出错

转载 作者:可可西里 更新时间:2023-11-01 17:59:43 32 4
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好的,所以我使用命令 wget http://ftp.mozilla.org/pub/mozilla.org/js/js185-1.0.0.tar.gz 下载了 SpiderMonkey 源代码并将其提取出来。然后我通过执行以下命令成功构建了包含文件和静态库:

  1. autoconf2.13
  2. ./configure --prefix=~/js --disable-shared-js
  3. 制作
  4. 安装

现在我尝试使用命令 g++ -I/home/aaditmshah/js/include/js -L/home/aaditmshah/js/lib -lmozjs185-1.0 -ldl -lm -ldl helloworld .cpp -o helloworld:

/*
* This define is for Windows only, it is a work-around for bug 661663.
*/
#ifdef _MSC_VER
# define XP_WIN
#endif

/* 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.
*/
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 == 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;
}

我知道我的 includelinker 选项指向正确的目录。包含文件位于 /home/aaditmshah/js/include/js 中,名为 libmozjs185-1.0 的静态库位于 /home/aaditmshah/js/lib 。但是它仍然会产生以下错误:

helloworld.cpp: In function ‘int main(int, const char**)’:
helloworld.cpp:74:20: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
helloworld.cpp:83:17: warning: NULL used in arithmetic [-Wpointer-arith]
/tmp/ccUU9may.o: 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

我想知道我丢失了哪些文件。我应该重建 SpiderMonkey 并将其安装在 /usr/local 中吗?任何帮助将不胜感激。

我很确定问题不在于我使用的是静态库。我将 SpiderMonkey 重建为一个共享对象库,它仍然给我同样的错误。

最佳答案

你可以试试这个:

g++ -I/home/aaditmshah/js/include/js /home/aaditmshah/js/lib/mozjs185-1.0.a -lm -ldl helloworld.cpp -o helloworld

即。直接在 g++ 命令行中添加存档。如果它不起作用,您可能需要指定这些的某些组合。 (对于 gcc 4.2 这对我有用):

-static -lmozjs185

只需为 mozjs185-1.0.a 指定正确的路径。

关于javascript - 编译嵌入式 SpiderMonkey 程序时出错,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10205202/

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