use gcc in shell script

kfcn

hi, there:

It may seem irrelevant, but does anyone know or used gcc compiler in a shell script? I need to use gcc to compile a c file and  change a variable in the file by setting a parameter of gcc (-D   ). If this works, gcc will generate an executable file with the name of that parameter (variable). That is it. I hope I made myself clear enough.

Thanks in advance!

kfcn

Hi, Hong Xiu:

Is it that simple? I am really too green a hand. I tried even more complicated ways, but didn't work. Let me see if yours works...

Thanks in advance!

kfcn

Hi, Red Sleeve or other high hands;

I still have the problem of changing the value of  the variable in the c file. Say, the file is soso.c, the variable is cHANGEABLE,  I want the value of cHANGEABE to be xingle (its default value is "quesheng", then I created a script called changeit, in changeit:

gcc -D cHANGEABLE=$1 -o $1 soso.c

then I run the script:

changeit xingle

but the executable xingle still not OK.

PS: I also added the following lines in soso.c:

#ifndef cHANGEABLE
define cHANGEABLE quesheng
#endif

Any problem you figure out?

Thanks!