Re: Creating makefile for using Linux-PAM-0.99.6.2

[Jason Curl]

PoWah Wong wrote:
> I downloaded the Linux-PAM-0.99.6.2 (which use
> automake) and configured and
> compiled it successfully.
snip
> I want to develop my programs based on the examples
> directory but I want to put those programs outside the
> Linux-PAM-0.99.6.2 directory, so I copied the examples
> directory to the same level as
> Linux-PAM-0.99.6.2.
> I am a newbie for the Linux-PAM and automake so please
> help.  What is the best way to design my makefile
> outside the Linux-PAM-0.99.6.2 directory?
>
> $ ls
> Linux-PAM-0.99.6.2 examples
>
> I modified the Makefile for my programs.
>
> $ cd examples
> $ diff -u Makefile.ok Makefile
snip

> $ make
> Makefile:329: .deps/pam_unix_passwd.Po: No such file
> or directory
> Makefile:330: .deps/pam_local.Po: No such file or
> directory
> make: *** No rule to make target `.deps/pam_local.Po'.
>  Stop.
> $ automake
> automake: `configure.ac' or `configure.in' is required
>
> $ mv .deps/blank.Po .deps/pam_unix_passwd.Po
> $ mv .deps/check_user.Po .deps/pam_local.Po
> $ make
> make: *** No rule to make target `Makefile.am', needed
> by `Makefile.in'.  Stop.
>
>   
You've just copied the Makefile. With Autoconf this is a generated file 
(shown here to be generated from Makefile.am, that in turn generates 
Makefile.in during the development stage, that generates Makefile when 
you type "configure"). As such, the "configure" program, etc. makes all 
these directories, plus some more and is dependent on the system that 
you're running for.

Your best bet might be to create your own "configure.ac" file (that with 
autoconf generates configure) and your own Makefile.am. The Autoconf 
manuals are pretty good at describing what to do. You could base yours 
from the Linux PAM's configure.ac.

So:
myprog/
 configure.ac
 Makefile.am
 myprog.c
 ....

Then you'll want to link the PAM stuff to yours. Autoconf provides some 
help here too, that you can check that the "PAM" library is installed. 
I've provided some very basic examples, this assumes that the PAM 
library you've downloaded is also installed (as it is for many different 
Linux installations already)

Disclaimer: I've just pulled the interesting bits out of my own 
projects, I haven't tested if this is sufficient.

e.g. configure.ac
AC_INIT([myprog],[1.0.0],address@hidden,[myprog])
AM_INIT_AUTOMAKE()
AC_LANG([C])
AC_GNU_SOURCE
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_HEADER_STDC
AC_CONFIG_FILES([Makefile])

e.g. Makefile.am
noinst_PROGRAMS = myprog
myprog_SOURCES = myprog.c

LDADD=-lpam

Then in your "myprog" directory you'll need to run the "autoconf" tools 
and fix any errors (mostly missing files).

Then when you modify "configure.ac" or "Makefile.am", you can run 
autoreconf. At the end you have your own "configure" that you can run 
and type "make" for.

Cheers,
Jason.