在Linux下的gcc中显示当前正在编译的文件名

Question

When compiling multiple files with gcc (ie: gcc *.c), a large project may take some time to compile and, if no errors are found, the screen remains static for some time. Does gcc have a command line option to display the filename of the c file its currently compiling?

Answer 1

gcc is just a driver program which uses cc1 to actually compile input C files.

That said, you can simply check arguments of gcc child processes to get what gcc is up to. Ie:

> gcc 1.c 2.c & ps -f --forest
[1] 22907
UID        PID  PPID  C STIME TTY          TIME CMD
myaut    21963 18153  0 20:21 pts/1    00:00:00 /bin/bash
myaut    22907 21963  0 20:41 pts/1    00:00:00  \_ gcc 1.c 2.c
myaut    22909 22907  0 20:41 pts/1    00:00:00  |   \_ 
  /usr/lib64/gcc/x86_64-suse-linux/4.8/cc1 -quiet 1.c -quiet -dumpbase
  1.c -mtune=generic -march=x86-64 -auxbase 1 -o
myaut    22908 21963  0 20:41 pts/1    00:00:00  \_ ps -f --forest

In this example I was lucky enough to capture child process which actually compiles 1.c with ps which has started almost simultaneously with gcc

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Anyway, using a full fledged building system on top of GCC (make, CMake or SCons) is a much better for compiling project consisting of multiple files.