How compiler a program which include math.h library with execl()

Question

execl("/usr/bin/cc","cc","myprog.c",NULL)

I use the this line for compiler to myprog.c in myMainProg. But myprog.c have #include "math.h" . So I have to add -lm. How can I do that?

`math.h` is a header, not a library. And don't add irrelevant tags. — too honest for this site, Apr 21 '16 at 17:06

jdarthenay · Accepted Answer · 2016-04-21T17:33:22.543

1

Command (from shell) to link your program should be:

cc myprog.c -o myprog -lm

So if you want to use execl to compile it from another program you should use:

execl("/usr/bin/cc","cc","myprog.c", "-o", "myprog", "-lm", (char *) NULL);

Edit: I almost forgot when using execl() the ending NULL argument must be cast to char *

edited Apr 21 '16 at 17:33

answered Apr 21 '16 at 17:22

jdarthenay

1 Answers1