# This file is part of pam-modules.       -*- autoconf -*-
# Copyright (C) 2005-2012, 2014-2015, 2018 Sergey Poznyakoff
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program.  If not, see <http://www.gnu.org/licenses/>.

AC_PREREQ(2.63)

AC_INIT(pam-modules, 2.3.1, bug-pam-modules@gnu.org.ua)
AC_CONFIG_SRCDIR(pam_fshadow/pam_fshadow.c)
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([1.11 no-exeext tar-ustar dist-xz silent-rules])
AM_CONFIG_HEADER(config.h)

# Enable silent rules by default:
AM_SILENT_RULES([yes])

dnl Library versioning
AC_SUBST(VI_CURRENT,1)
AC_SUBST(VI_REVISION,0)
AC_SUBST(VI_AGE,0)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL

AM_DISABLE_STATIC
LT_PREREQ(2.2.5a)
LT_INIT

dnl Checks for libraries.
AC_CHECK_LIB(pam, pam_get_item,:,
		  [AC_MSG_ERROR([Required library libpam is not found])])

AC_ARG_WITH(crypt-lib,
            AC_HELP_STRING([--with-crypt-lib=LIB],
	                   [use -lLIB instead of -lcrypt]),
	    [cryptlib=$withval],
	    [cryptlib=crypt])	

if test "x$cryptlib" != xno; then	    
  AC_CHECK_LIB($cryptlib, crypt)
fi  
AC_SUBST(PAM_MISC)
AH_TEMPLATE([HAVE_PAM_MISC_SETENV],[Define if pam_misc_setenv is available.])
AC_CHECK_LIB(pam_misc, pam_misc_setenv,
             [PAM_MISC=-lpam_misc
	      AC_DEFINE([HAVE_PAM_MISC_SETENV],1)],:,[-lpam])

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(security/pam_appl.h security/pam_modules.h,
                 :,
		 AC_MSG_ERROR([Required PAM header files not found]))
AC_CHECK_HEADERS(fcntl.h syslog.h unistd.h crypt.h security/_pam_aconf.h \
                 security/pam_misc.h security/pam_ext.h termios.h \
                 shadow.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST

AC_CHECK_HEADERS([shadow.h])
AC_CHECK_FUNCS(fgetspent)
AC_CHECK_TYPES(struct spwd, , ,
    [ #include <shadow.h> ])
AC_CHECK_MEMBERS([struct spwd.sp_expire], , ,
    [ #include <shadow.h> ])

dnl Checks for library functions.
AC_CHECK_FUNCS(strerror tcgetattr fgetpwent)


PM_ENABLE(fshadow)
PM_ENABLE(log)
PM_ENABLE(regex)
PM_ENABLE(groupmember)

# Check for SQL support	      

AC_ARG_WITH(mysql,
            AC_HELP_STRING([--without-mysql],
	                   [Configure to work without MySQL]),
	    [want_mysql=$withval])	
AC_ARG_WITH(pgsql,
            AC_HELP_STRING([--without-pgsql],
	                   [Configure to work without Postgres]),
	    [want_pgsql=$withval])
AC_ARG_WITH(postgres,
            AC_HELP_STRING([--without-postgres],
	                   [Same as --without-pgsql]),
 	    [want_pgsql=$withval])
AC_ARG_WITH(sql,
 AC_HELP_STRING([--without-sql],
	                   [Do not build SQL dependent modules]),
	  [want_mysql=$withval	
	   want_pgsql=$withval])	
	   
PM_ENABLE(mysql, [
  if test "$want_mysql" != no; then
    PM_CHECK_LIB(mysqlclient, mysql_real_connect, "-lm",
                 [ AC_DEFINE(USE_SQL_MYSQL,1,
                             [Define this if you are going to use MySQL])
                   AC_DEFINE(HAVE_LIBMYSQL,1,
                             [Define this if you have mysqlclient library])
                   MYSQLLIBS="$pm_cv_lib_mysqlclient"
		   SQL_MODULES="$SQL_MODULES pam_mysql.la"
		   build_mysql=yes ],
                 [ test "$build_mysql" = yes && AC_MSG_ERROR([cannot build the requested module pam_mysql, because MySQL libraries are not present])
	           build_mysql=no ],
                 [/usr/lib/mysql /usr/local/lib/mysql])
  fi
])

PM_ENABLE(pgsql, [
  if test "$want_pgsql" != no; then
    PM_CHECK_LIB(pq, PQconnectStart, [],
    	         [ save_CPPFLAGS=$CPPFLAGS
	           for dir in /usr/local/pgsql/include /usr/pgsql/include
		   do
			CPPFLAGS="$save_CPPFLAGS -I$dir"
			AC_CHECK_HEADER([libpq-fe.h], [break])
			CPPFLAGS="$save_CPPFLAGS"
		   done
	           AC_DEFINE(USE_SQL_PGSQL,1,
                             [Define this if you are going to use PostgreSQL])
                   AC_DEFINE(HAVE_LIBPQ,1,
                             [Define this if you have libpq]) 
                   PGSQLLIBS="$pm_cv_lib_pq"
		   SQL_MODULES="$SQL_MODULES pam_pgsql.la"
		   build_pgsql=yes ],
                 [ test "$build_pgsql" = yes && AC_MSG_ERROR([cannot build the requested module pma_pgsql, because PostgreSQL libraries are not present])
	           build_pgsql=no ],
                 [/usr/pgsql/lib /usr/local/pgsql/lib])
  fi
])

AC_SUBST(MYSQLLIBS)	
AC_SUBST(PGSQLLIBS)
AC_SUBST(SQL_MODULES)

# LDAP support
PM_ENABLE(ldaphome,[
  AC_CHECK_LIB(ldap, ldap_bind,
               [build_ldaphome=yes],
               [if test $build_ldaphome = yes; then
	          AC_MSG_ERROR([cannot build pam_ldaphome, because the required library libldap is not found])
	        else
	          build_ldaphome=no
		fi])
])

#
PM_ENABLE(umotd,[
case $build_umotd in
probe)
  build_umotd=$ac_cv_header_security_pam_ext_h
  ;;
yes)
  test $ac_cv_header_security_pam_ext_h = no && AC_MSG_ERROR([Cannot build pam_umotd, because the required header security/pam_ext.h is not present])
  ;;
esac
])

#
AC_CHECK_FUNCS([getdomainname])
PM_ENABLE(innetgr,[
case $build_innetgr in
probe)
  AC_CHECK_FUNC([innetgr],[build_innetgr=yes],[build_innetgr=no])
  ;;
yes)
  AC_CHECK_FUNC([innetgr],[],[AC_MSG_ERROR([cannot build the requested module pam_innetgr because function innetgr is not present in libc])])
  ;;
esac])

## *****************
## debugging support
## *****************
AC_ARG_ENABLE(debug,                     
    AC_HELP_STRING([--enable-debug], [enable debugging mode]),
    [if test "$enableval" = yes; then
       if test "$GCC" = yes; then
	 AC_MSG_CHECKING(whether gcc accepts -ggdb)
         save_CFLAGS=$CFLAGS
         CFLAGS="-ggdb -Wall"
         AC_TRY_COMPILE([],void f(){},
           AC_MSG_RESULT(yes),
           [if test x"$ac_cv_prog_cc_g" = xyes; then
              CFLAGS="-g -Wall"
            else
              CFLAGS=
            fi
            AC_MSG_RESULT(no)])
         CFLAGS="`echo $save_CFLAGS | sed 's/-O[[0-9]]//g'` $CFLAGS"
	 AC_DEFINE_UNQUOTED([DEBUG_MODE],1,[Define to enable debugging])
       fi
     fi])
   
## **************
## Directories
## **************
PAMDIR='$(prefix)/lib/security'
AC_ARG_WITH(pamdir,
	    AC_HELP_STRING([--with-pamdir=DIR],
	                   [install PAM modiles in DIR (PREFIX/lib/security)]),
	    [PAMDIR=$withval])
AC_SUBST(PAMDIR)

## **************
## Imprimatur
## **************
IMPRIMATUR_INIT

## **************
## Summary
## **************
   
AC_CONFIG_COMMANDS([status],[
echo ""
delim="-------------------------------------------------------------------"
echo $delim | tr '-' '*'
echo "Modules to build:"
res=
for module in fshadow regex log pgsql mysql ldaphome umotd groupmember innetgr
do
	modname=pam_$module
	eval enable=\${build_$module}
	str=`echo ${modname}" yes" | sed 's/./-/g'`
	dstr=`echo $delim | sed "s/^$str//" | tr '-' '.'`
	echo ${modname}$dstr $enable
	res="$res$enable"
done
echo $delim | tr '-' '*'
case "$res" in
*yes*) ;;
*)
       AC_MSG_ERROR([Nothing to build?])
esac
],[
build_fshadow=$build_fshadow
build_regex=$build_regex
build_log=$build_log
build_pgsql=$build_pgsql
build_mysql=$build_mysql
build_ldaphome=$build_ldaphome
build_umotd=$build_umotd
build_groupmember=$build_groupmember
build_innetgr=$build_innetgr])
		
AC_OUTPUT(Makefile
          doc/Makefile
	  examples/Makefile
	  lib/Makefile
	  pam_fshadow/Makefile
          pam_regex/Makefile
	  pam_log/Makefile
	  pam_sql/Makefile
	  pam_ldaphome/Makefile
	  pam_umotd/Makefile
	  pam_groupmember/Makefile
	  pam_innetgr/Makefile
	  pamck/Makefile)