标签:style c class blog code java
1.如何在gcc中传输宏定义?
参考如下红色部分,可以传入宏定义
gcc [-c|-S|-E] [-std=standard]
[-g] [-pg] [-Olevel]
[-Wwarn...] [-pedantic]
[-Idir...] [-Ldir...]
[-Dmacro[=defn]...]
[-Umacro]
[-foption...] [-mmachine-option...]
[-o outfile] [@file] infile...
示例:
#include <stdio.h> int main(void) { #ifdef TEST printf("gcc has predefine!\n"); #else printf("gcc no predefine\n"); #endif return 0; }
[root@localhost c]# gcc gcc_D_test.c -DTEST [root@localhost c]# ./a.out gcc has predefine!
[root@localhost c]# gcc gcc_D_test.c [root@localhost c]# ./a.out gcc no predefine
标签:style c class blog code java
原文地址:http://www.cnblogs.com/liuyidiao/p/3752561.html