两种ABI在如下方面有区别：（OABI中的O，表示“Old”，“Lagacy”，EABI中的E，表示“Embedded”，是一种新的ABI）

-mabi=apcs-gnu ：apcs-gnu是OABI的 参数，因此将OABI的参数传给符合EABI标准的编译，编译阶段没有报错，但在板上运行时，程序中涉及到浮点数的部分出现了许多莫名的问题。

        比如 printf("%s %f",s,f);这句话输出的浮点数值并不是传给printf的参数，而是一个莫名其妙的数字。

}; 

样例代码如下：

	struct gl_hooks_t {
       #include "entries.in"
	}; 
	
	char const * const gl_names[] = {
	    #include "entries.in"
	    NULL
	};
	
	/* This is a generic function pointer type, whose name indicates it must
	 * be cast to the proper type *and calling convention* before use.
	 */
	typedef void (*__eglMustCastToProperFunctionPointerType)(void);
	
	struct gl_hooks_t* g_hooks = NULL;
	
	void init_api(void *dso, char const * const * api,
			__eglMustCastToProperFunctionPointerType* curr) {
				while (*api) {
					char const * name = *api;
					__eglMustCastToProperFunctionPointerType f =
					(__eglMustCastToProperFunctionPointerType)dlsym(dso, name);
	        *curr++ = f;
	        api++;
	    }
	}
	
	int load_library(const char*path,const char *sym){
		int status;
		void *dso = NULL;
	
	    /*
	     * load the symbols resolving undefined symbols before
	     * dlopen returns. Since RTLD_GLOBAL is not or'd in with
	     * RTLD_NOW the external symbols will not be global
	     */
		dso = dlopen(path, RTLD_NOW);
		if (dso == NULL) {
			char const *err_str = dlerror();
			LOGE("load: module=%s\n%s", path, err_str?err_str:"unknown");
			status = -EINVAL;
		}
	
		init_api(dso, gl_names, g_hooks);
	
		/* success */
		status = 0;
		done: if (status != 0) {
			if (dso != NULL) {
				dlclose(dso);
				dso = NULL;
			}
		}
		return status;
	}