Ubuntu64位系统xampp环境编译32位php扩展库

/**

 * hello.c

 * To compile, use following commands:

 *   gcc -O -c -fPIC -o hello.o hello.c  -m32

 *   gcc -shared -o libhello.so hello.o -m32

 */

int hello_add(int a, int b)

{

    return a + b;

}

$ gcc -O -c -fPIC -o hello.o hello.c -m32

$ gcc -shared -o libhello.so hello.o -m32

$ su

# echo /usr/local/lib > /etc/ld.so.conf.d/local.conf  

# cp libhello.so /usr/local/lib

# /sbin/ldconfig

/**

 * hellotest.c

 * To compile, use following commands:

 *   gcc -o hellotest -lhello hellotest.c -m32

 */

#include 

int main()

{

    int a = 3, b = 4;

    printf("%d + %d = %d\n", a, b, hello_add(a,b));

    return0;

}

$ gcc -o hellotest -lhello hellotest.c -m32

$ ./hellotest

3 + 4 = 7

$ wget http://eduunix.ccut.edu.cn/index2/php/php/php-5.3.6.tar.gz

$ tar xzvf php-5.3.6.tar.gz

$ cd php-5.3.6/ext

$ ./ext_skel --extname=hello

$ cd hello

16:  PHP_ARG_ENABLE(hello, whether to enable hello support,

17:  dnl Make sure that the comment is aligned:

18:  [  --enable-hello           Enable hello support])

$ /opt/lampp/bin/phpize

PHP_FUNCTION(confirm_hello_compiled);   /* For testing, remove later. */

PHP_FUNCTION(hello_add);

zend_function_entry hello_functions[] = {

    PHP_FE(confirm_hello_compiled,  NULL)       /* For testing, remove later. */

    PHP_FE(hello_add,   NULL)       /* For testing, remove later. */

    {NULL, NULL, NULL}  /* Must be the last line in hello_functions[] */

};

PHP_FUNCTION(hello_add)

{

    longint a, b;

    longint result;

    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ll", &a, &b) == FAILURE) {

        return;

}

    result = hello_add(a, b);

    RETURN_LONG(result);

}

$ CFLAGS=-m32 CPPFLAGS=-m32 CCASFLAGS=-m32 ./configure --with-php-cOnfig=/opt/lampp/bin/php-config

$ make LDFLAGS=-lhello

$ make test (测试是否正常安装)

$ sudo make install 此命令会将so放在php的扩展文件去

$ vim /opt/lampp/etc/php.ini

找到extension部分，加入extension=hello.so，重启xampp

$ /opt/lampp/lampp restart

    echo hello_add(3, 4);

?>