dnl Process this file with autoconf to produce a configure script.
AC_INIT(quota.c)
AC_CONFIG_HEADERS([config.h])

dnl Checks for programs.
AC_PROG_CC
AC_HEADER_STDC
AC_PROG_INSTALL

dnl Check for compiler options
AC_ARG_ENABLE(static-link, [  --enable-static-link=[yes/no]        Link all binaries statically [default=no].],
	,
	enable_static_link="no")
if test "x$enable_static_link" != "xyes"; then
	AC_MSG_CHECKING(whether compiler supports PIE)
	oldCFLAGS="$CFLAGS"
	CFLAGS="$CFLAGS -fPIE"
	oldLDFLAGS="$LDFLAGS"
	LDFLAGS="$LDFLAGS -pie"
	AC_LINK_IFELSE([AC_LANG_PROGRAM([[]])], compilepie="yes")
	if test "x$compilepie" != "xyes"; then
		CFLAGS="$oldCFLAGS"
		LDFLAGS="$oldLDFLAGS"
		AC_MSG_RESULT(no)
	else
		AC_MSG_RESULT(yes)
	fi
else
	CFLAGS="$CFLAGS -static"
	LDFLAGS="$LDFLAGS -static"
fi

dnl Checks for libraries.
AC_ARG_ENABLE(ldapmail, [  --enable-ldapmail=[yes/no/try]       Enable ldap mail address lookups [default=no].],
	,
	enable_ldapmail="no")
if test "x$enable_ldapmail" != "xno"; then
	have_new_ldap="no"
	have_old_ldap="no"
	AC_CHECK_LIB(ldap, ldap_initialize, have_new_ldap="yes", AC_CHECK_LIB(ldap, ldap_init, have_old_ldap="yes"))
	if test "x$have_new_ldap" != "xno" -o "x$have_old_ldap" != "xno"; then
		LDAPLIBS="-L/usr/lib -lldap -llber"
		AC_DEFINE([USE_LDAP_MAIL_LOOKUP], 1, [Lookup email address using LDAP])
		COMPILE_OPTS="$COMPILE_OPTS USE_LDAP_MAIL_LOOKUP"
		if test "x$have_new_ldap" = "xyes"; then
			AC_DEFINE([USE_LDAP_23], 1, [LDAP 2.3 or newer installed])
			AC_CHECK_DECL(ldap_perror, ,
				      AC_DEFINE([NEED_LDAP_PERROR], 1, [ldap_perror function not declared]),
				      [#include <ldap.h>])
		fi
	else
		if test "x$enable_ldapmail" = "xyes"; then
			AC_MSG_ERROR([LDAP support required but library not found.]);
		fi
	fi
fi
AC_SUBST(LDAPLIBS)

	
AC_CHECK_HEADER(ext2fs/ext2fs.h,ext2fshead="yes")
if test "x$ext2fshead" = "xyes"; then
	AC_DEFINE([HAVE_EXT2_INCLUDE], 1, [Header files for e2fslib])
	AC_MSG_CHECKING([for ext2_ino_t])
	have_ext2_ino_t="no"
	AC_EGREP_HEADER(ext2_ino_t, ext2fs/ext2fs.h, have_ext2_ino_t="yes")
	if test "x$have_ext2_ino_t" != "xyes"; then
		AC_MSG_RESULT([not found])
	else
		AC_MSG_RESULT([found])
		AC_DEFINE([HAVE_EXT2_INO_T], 1, [ext2fs.h defines ext2_ino_t])
	fi
fi

AC_ARG_ENABLE(ext2direct,
	[  --enable-ext2direct=[yes/no/try]     Enable scanning of EXT2/EXT3 filesystem using e2fslib [default=try].],
	,
	enable_ext2direct="try")
if test "x$enable_ext2direct" != "xno"; then
	AC_CHECK_LIB(com_err, com_err, EXT2LIBS="-lcom_err $EXT2LIBS")
	AC_CHECK_LIB(ext2fs, ext2fs_initialize, EXT2LIBS="-lext2fs $EXT2LIBS",, "-lcom_err")
	if test "${ac_cv_lib_com_err_com_err}" != "yes" -o "${ac_cv_lib_ext2fs_ext2fs_initialize}" != "yes"; then
		if test "x$enable_ext2direct" = "xyes"; then
			AC_MSG_ERROR([Ext2 direct support required but libraries not found.])
		else
			AC_MSG_WARN([Ext2 direct support won't be compiled. Libraries not found.])
		fi
		enable_ext2direct="no"
		EXT2LIBS=""
	else
		if test "x$ext2fshead" != "xyes"; then
			if test "x$enable_ext2direct" = "xyes"; then
				AC_MSG_ERROR([Ext2 direct support required but header files not found.])
			else
				AC_MSG_WARN([Ext2 direct support won't be compiled. Header files not found.])
			fi
			enable_ext2direct="no"
			EXT2LIBS=""
		else
			enable_ext2direct="yes"
		fi
	fi
	if test "x$enable_ext2direct" = "xyes"; then
		AC_DEFINE([EXT2_DIRECT], 1, [Scanning of ext? filesystems using e2fslib])
		COMPILE_OPTS="$COMPILE_OPTS EXT2_DIRECT"
	fi
fi
AC_SUBST(EXT2LIBS)

AC_ARG_ENABLE(netlink,
	[  --enable-netlink=[yes/no/try]   Compile daemon receiving quota messages via netlink [default=no].],
	,
	enable_netlink="no")
if test "x$enable_netlink" != "xno"; then
	PKG_CHECK_MODULES([DBUS], [dbus-1])

	AC_CHECK_LIB(nl, genl_register, NETLINKLIBS="-lnl $DBUS_LIBS")
	if test -z "$NETLINKLIBS" -o -z "$DBUS_LIBS"; then
		if test "x$enable_netlink" = "xyes"; then
			AC_MSG_ERROR([Required libraries for quota netlink daemon not found.])
		else
			AC_MSG_WARN([Quota netlink daemon won't be compiled. Required libraries not found.])
		fi
		enable_netlink="no"
		NETLINKLIBS=""
	else
		CPPFLAGS="$DBUS_CFLAGS $CPPFLAGS"
		if test -z "$DBUS_LIBS"; then
			if test "x$enable_netlink" = "xyes"; then
				AC_MSG_ERROR([Required headers for quota netlink daemon not found.])
			else
				AC_MSG_WARN([Quota netlink daemon won't be compiled. Required headers not found.])
			fi
			NETLINKLIBS=""
			enable_netlink="no"
		else
			QUOTA_NETLINK_PROG=quota_nld
		fi
	fi
fi
AC_SUBST(QUOTA_NETLINK_PROG)
AC_SUBST(NETLINKLIBS)

AC_SEARCH_LIBS(gethostbyname, nsl)
AC_MSG_CHECKING(for host_access in -lwrap)
AC_CACHE_VAL(ac_cv_lib_wrap_main,
	saved_LIBS="$LIBS"
	LIBS="$LIBS -lwrap"
	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
	#include <stdio.h>
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <tcpd.h>
	struct request_info request;
	int deny_severity, allow_severity;]],[[hosts_access(&request);]])],
	dnl We always restore LIBS as we add -lwrap in the next check
	[ac_cv_lib_wrap_main=yes; LIBS="$saved_LIBS"; AC_MSG_RESULT(yes)],
	[ac_cv_lib_wrap_main=no; LIBS="$saved_LIBS"; AC_MSG_RESULT(no)])
	])

if test ${ac_cv_lib_wrap_main} = yes; then
	AC_CHECK_HEADER(tcpd.h,, [
		echo 'ERROR: could not find tcpd.h - missing TCP wrappers package'
		exit 1
	])
	LIBS="$LIBS -lwrap"
	AC_DEFINE([HOSTS_ACCESS], 1, [Use hosts.allow and hosts.deny for access checking of rpc.rquotad])
	COMPILE_OPTS="$COMPILE_OPTS HOSTS_ACCESS"
fi

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

AC_ARG_ENABLE(altformat,
	[  --enable-altformat=[yes/no]     Enable alternative format used by edquota [default=yes].],
	,
	enable_altformat="yes")
AC_ARG_ENABLE(rpc,
	[  --enable-rpc=[yes/no]           Enable RPC support [default=yes].],
	,
	enable_rpc="yes")
AC_ARG_ENABLE(rpcsetquota,
	[  --enable-rpcsetquota=[yes/no]   Use RPC for setting quotas [default=no].],
	,
	enable_rpcsetquota="no")
AC_ARG_ENABLE(xfs_roothack,
	[  --enable-xfs_roothack=[yes/no]  Support old XFS root filesystems [default=no].],
	,
	enable_xfs_roothack="no")
AC_ARG_ENABLE(bsd_behaviour,
	[  --enable-bsd_behaviour=[yes/no] Mimic BSD behaviour [default=yes].],
	,
	enable_bsd_behaviour="yes")
AC_ARG_ENABLE(libefence,
	[  --enable-libefence=[yes/no]     Use Electric Fence memory checks [default=no].],
	,
	enable_libefence="no")

AC_ARG_ENABLE(nls,
	[  --enable-nls=[yes/no]           Enable gettext [default=yes].],
	,
	enable_nls="yes")
AC_ARG_ENABLE(rootsbin,
	[  --enable-rootsbin=[yes/no]      Use /sbin for some important binaries regardless $prefix [default=no].],
	,
	enable_rootsbin="no")
AC_ARG_ENABLE(proc-mounts,
	[  --enable-proc-mounts=[path]   Use alternate file instead of /etc/mtab [default=/proc/mounts].],
	,
	enable_proc_mounts="/proc/mounts")

if test "$enable_altformat" = "yes" ; then
	AC_DEFINE([ALT_FORMAT], 1, [Alternative file format of edquota])
	COMPILE_OPTS="$COMPILE_OPTS ALT_FORMAT"
fi
if test "$enable_rpc" = "yes" ; then
	AC_DEFINE([RPC], 1, [Support for RPC])
	COMPILE_OPTS="$COMPILE_OPTS RPC"
fi
if test "$enable_rpcsetquota" = "yes" ; then
	AC_DEFINE([RPC_SETQUOTA], 1, [Allow setting of quotas over RPC])
	COMPILE_OPTS="$COMPILE_OPTS RPC_SETQUOTA"
fi
if test "$enable_xfs_roothack" = "yes" ; then
	AC_DEFINE([XFS_ROOTHACK], 1, [Assume quota mount options for root filesystem])
	COMPILE_OPTS="$COMPILE_OPTS XFS_ROOTHACK"
fi
if test "$enable_bsd_behaviour" = "yes" ; then
	AC_DEFINE([BSD_BEHAVIOUR], 1, [Check rights to query / set quotas before calling quotactl])
	COMPILE_OPTS="$COMPILE_OPTS BSD_BEHAVIOUR"
fi
if test "$enable_libefence" = "yes" ; then
	LIBMALLOC="/usr/lib/libefence.a"
fi
if test "$enable_nls" = "yes" ; then
	AC_DEFINE([USE_GETTEXT], 1, [Use gettext to translate messages])
	INSTMO="inst_mo"
fi
if test "$enable_proc_mounts" != "no"; then
	AC_DEFINE_UNQUOTED([ALT_MTAB], ["$enable_proc_mounts"], [File with mounted filesystems])
fi
if test "$enable_rootsbin" = "yes" ; then
	ROOTSBIN="/sbin"
else
	ROOTSBIN='$(prefix)/sbin'
fi

AC_DEFINE_UNQUOTED([COMPILE_OPTS], ["$COMPILE_OPTS"], [Configuration options])
AC_DEFINE([PACKAGE_VERSION], ["4.00-pre1"], [Version of quota tools])

AC_SUBST(LIBMALLOC)
AC_SUBST(INSTMO)
AC_SUBST(ROOTSBIN)
AC_SUBST(CPPFLAGS)

AC_OUTPUT(Makefile)