Function();return0; } 然后在不开启优化(即-O0)的情况下,会报链接错误,找不到符号"Function": 备注:在开启优化O1以上的情况下是可以正常编译的,编译器会将函数体进行替换 $ gcc INlineMain.c /usr/bin/ld: /tmp/ccQuzijl.o:infunction`main': INlineMain.c:(.text+0xe): undefined reference to `F...
也就是说，C 语言中 inline 的正确打开方式是：将 inline 版本的函数写在 xxx.h 文件里 在 xxx.c...
不被static关键字修饰的函数,它在整个工程范围内,全局都可以调用,即其属性是global的;只要函数参与了编译,且最后链接的时候把函数的.o文件链接进去了,是不会报undefined reference to ‘xxx’的; 被static关键字修饰的函数,只能在其定义的C文件内可见,即其属性由global变成了local,这个时候如果有另一个C文件的函数...
/usr/bin/ld: warning: cannot find entry symbol _start; defaulting to 08048074 main.o(.text+0x19): In function `main': : undefined reference to `printf' sub.o(.text+0xf): In function `sub_fun': : undefined reference to `printf' collect2: ld returned 1 exit status 出现了一大堆错误...
/usr/local/mysql/lib/mysql/libmysqlclient.a(charset.c.o): In function `get_charset_name': /home/zhangsan/mysql-5.5.24/mysys/charset.c:533: undefined reference to `pthread_once' 3) 下面这个是因为没有指定链接参数-lrt /usr/local/thirdparty/curl/lib/libcurl.a(libcurl_la-timeval.o): In fu...
/home/software/mysql-5.5.24/mysys/my_compress.c:71: undefined reference to `compress' 2) 下面是因为没有指定编译链接参数-pthread(注意不仅仅是-lpthraed) /usr/local/mysql/lib/mysql/libmysqlclient.a(charset.c.o): In function `get_charset_name': ...
/usr/local/thirdparty/curl/lib/libcurl.a(libcurl_la-timeval.o): In function `curlx_tvnow': timeval.c:(.text+0xe9): undefined reference to `clock_gettime' 4) 下面这个是因为没有指定链接参数-ldl /usr/local/thirdparty/openssl/lib/libcrypto.a(dso_dlfcn.o): In function `dlfcn_globallooku...
sub.o(.text+0xf): In function `sub_fun': : undefined reference to `printf' collect2: ld returned 1 exit status 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 出现了一大堆错误,因为 printf 等函数是在库文件中实现的。在编译 bootloader、内核时,用到这个选项──它们用到的很多函数是自...
The implicitly-generated member functions and any member function declared as deleted are inline just like any other function defined inside a class definition.http://en.cppreference.com/w/cpp/language/inline总之:LZ你对inline理解错了,inline不是用于优化的。 regexepx && 6 在这个文章里了解了http:...
If a call to a given function is integrated, then the function is not output as assembler code in its own right. staticinline Enabled at levels , , and , but not . -O1-O2-O3-Os-Og 意思就是查看代码中所有的函数如果仅仅被调用了一次那么默认 inline内联 如果有函数调用了这样的static修饰的...