我正在使用 php-cpp 为我的 php 代码创建扩展,当我尝试只编译 main.cpp 文件的简单结构时,我得到了一些奇怪的错误。
这是编译错误:
g++ -std=gnu++11 main.cpp
In file included from lib/phpcpp/phpcpp.h:39:0,
from main.cpp:122:
lib/phpcpp/type.h:32:1: warning: type attributes ignored after type is already defined [-Wattributes]
};
^
In file included from lib/phpcpp/phpcpp.h:60:0,
from main.cpp:122:
lib/phpcpp/classtype.h:31:1: warning: type attributes ignored after type is already defined [-Wattributes]
};
^
/tmp/cc0tI8mp.o: In function `get_module':
main.cpp:(.text+0x4c): undefined reference to `Php::Extension::Extension(char const*, char const*, int)'
main.cpp:(.text+0x65): undefined reference to `Php::Extension::~Extension()'
/tmp/cc0tI8mp.o: In function `Php::Extension::operator void*()':
main.cpp:(.text._ZN3Php9ExtensioncvPvEv[_ZN3Php9ExtensioncvPvEv]+0x14): undefined reference to `Php::Extension::module()'
collect2: error: ld returned 1 exit status
什么是 /tmp/cctI8mp.o ???还是其他的?每次我编译时,提到的 cctI8mp.o 都会更改为另一个名称
这是我尝试编译的代码:
#include "lib/phpcpp/phpcpp.h"
/**
* tell the compiler that the get_module is a pure C function
*/
extern "C" {
int main(){}
PHPCPP_EXPORT void *get_module()
{
static Php::Extension bias("bias_framework_free", "0.9.3.20");
return bias;
}
}
偏见是我的扩展名。