Linking

Finally, we're ready to link the files together to produce a final binary. This involves taking the object files and glueing them together with the M4 library, libm4.so to produce a binary that we can run. To make sure that your M4 libraries are visible, point them to your lib directory:

export LD_LIBRARY_PATH

LD_LIBRARY_PATH=$HOME/gnu-src/m4-1.5/m4/.libs:$LD_LIBRARY_PATH

Finally, run the object files through gcc:

gcc -DHAVE_CONFIG_H -I. -I.. -I../m4 main.o freeze.o stackovf.o temp.o -L`cd ../m4/.libs && pwd` -lm4

which produces the executable a.out. Let's just test it:

     $ ./a.out --version
     GNU (null) (null)
     Written by Rene' Seindal and Gary V. Vaughan.
     
     Copyright 1989-1994, 1999, 2000 Free Software Foundation, Inc.
     This is free software; see the source for copying conditions.  There is
     NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.
     $