dnl
dnl Configure.in file for the Midnight Commander
dnl
AC_INIT(src/main.c)
AC_PREREQ(2.13)
AC_CANONICAL_HOST

AM_INIT_AUTOMAKE(mc, 4.5.54)
AM_CONFIG_HEADER(config.h)
AM_MAINTAINER_MODE

AC_PROG_CC
AC_PROG_CPP
AC_PROG_RANLIB
AC_PROG_LN_S
AC_PROG_AWK

AC_AIX
AC_MINIX
AC_ISC_POSIX
dnl It's a hack to accomodate both Autoconf 2.13 and the 2.49x series,
dnl It's needed until Autoconf 2.50 is released.
ifdef([AC_PROG_CC_STDC], [AC_PROG_CC_STDC], [AM_PROG_CC_STDC])
AC_HEADER_MAJOR
AC_C_CONST

dnl AC_SYS_LARGEFILE is missing in Autoconf-2.13
ifelse(AC_ACVERSION, [2.13], [],
[dnl Only enable large file support if --enable-largefile was given
if test "x$enable_largefile" = xyes; then
   AC_SYS_LARGEFILE
fi
])

AC_CHECK_TOOL(AR, ar, ar)

AC_CHECK_PROGS(X11_WWW,netscape arena Mosaic chimera)
if test x"$X11_WWW" = x; then
    X11_WWW=lynx
fi

ALL_LINGUAS="az ca cs da de el es es_ES fi fr hu it ja ko lv nl no pl pt_BR ro ru sk sl sv uk ta tr wa zh_TW.Big5 zh_CN.GB2312"

AM_GNOME_GETTEXT

dnl
dnl Enforce coding standards
dnl
if test "x$GCC" = xyes; then
    CFLAGS="$CFLAGS -Wall"
fi

dnl
dnl We now use glib
dnl 
AM_PATH_GLIB(1.2.0,,[AC_MSG_ERROR([Test for GLIB failed.  MC requires GLIB.])])
LIBS="$LIBS $GLIB_LIBS"

dnl
dnl OS specific flags.
dnl

posix_libs=""
case $host_os in
aux*)
    # A/UX
    posix_libs="-lposix"
    AC_DEFINE(_POSIX_SOURCE)
    ;;
sco*)
    AC_DEFINE(SCO_FLAVOR, 1, [Define if you want to turn on SCO-specific code])
    AC_DEFINE(_SVID3, 1, [Needs to be defined on SCO])
    ;;
esac

AC_PROG_INSTALL
AC_CHECK_HEADERS([unistd.h string.h memory.h crypt.h grp.h limits.h \
	malloc.h stdlib.h termios.h utime.h fcntl.h sys/statfs.h \
	sys/time.h sys/timeb.h])

AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_HEADER_DIRENT
AC_SHORT_D_NAME_LEN
AC_HEADER_STDC

dnl Missing structure components
AC_STRUCT_ST_BLKSIZE
AC_STRUCT_ST_BLOCKS
AC_STRUCT_ST_RDEV

dnl
dnl Check availability of some functions 
dnl 

AC_CHECK_FUNCS([strerror statfs getwd strcasecmp strncasecmp strcoll strftime \
		strdup memmove pwdauth truncate initgroups putenv \
		memset memcpy tcsetattr tcgetattr cfgetospeed \
		sigaction sigemptyset sigprocmask sigaddset \
		sysconf setuid setreuid \
		telldir seekdir])

dnl
dnl getpt is a GNU Extension (glibc 2.1.x)
dnl
AC_CHECK_FUNCS(getpt)

SHADOWLIB=
case $host_os in
linux*)
    AC_CHECK_LIB(shadow,pw_encrypt,
	[shadow_header=yes
	AC_CHECK_HEADERS(shadow.h,,
		[AC_CHECK_HEADERS(shadow/shadow.h,,
			[shadow_header=no])])
	if test $shadow_header = yes; then
	    AC_DEFINE(LINUX_SHADOW)
	    SHADOWLIB=-lshadow
	fi])
    ;;
esac
AC_SUBST(SHADOWLIB)

NEED_CRYPT_PROTOTYPE=yes
if test x$ac_cv_header_crypt_h = xyes; then
AC_TRY_WARNINGS([#include <crypt.h>], [char *p = crypt("xxx", "yyy");
if (p)
return 0;],[
NEED_CRYPT_PROTOTYPE=no])
else 
    if test x$ac_cv_header_unistd_h = xyes; then
AC_TRY_WARNINGS([#include <unistd.h>], [char *p = crypt("xxx", "yyy");
if (p)
return 0;],[
NEED_CRYPT_PROTOTYPE=no])
    fi
fi
if test x$NEED_CRYPT_PROTOTYPE = xyes; then
AC_DEFINE(NEED_CRYPT_PROTOTYPE)
fi

dnl
dnl AIX and Sequent need <sys/select.h> for fd_set
dnl
AC_CHECK_HEADERS(sys/select.h)

dnl
dnl On SCO and some SVR4, crypt is on libcrypt.a
dnl         grantpt in  libpt.a
dnl
LCRYPT=""
AC_CHECK_FUNCS(crypt, , [
    AC_CHECK_LIB(crypt, crypt, LCRYPT="-lcrypt",[
	AC_CHECK_LIB(crypt_i, crypt, LCRYPT="-lcrypt_i")])])
AC_SUBST(LCRYPT)

AC_CHECK_FUNCS(grantpt, , [AC_CHECK_LIB(pt, grantpt)])

dnl
dnl libintl.a required on SCO to provide proper NLS support
dnl (using native cc links it by default)
dnl
if test x$GCC = xyes; then
    AC_CHECK_LIB(intl, tolower)
fi

dnl replacing lstat with statlstat on sco makes it more portable between
dnl sco clones
AC_CHECK_FUNCS(statlstat)

dnl
dnl If running under AIX, AC_AIX does not tell us that
dnl
AC_MSG_CHECKING([for AIX defines])
AC_EGREP_CPP(yes,
[#if defined(AIX) || defined(_AIX) || defined(__aix__) || defined(aix)
yes
#endif
], [
AC_DEFINE(IS_AIX, 1, [Define if compiling for AIX])
AC_MSG_RESULT(yes)
], [AC_MSG_RESULT(no)])

dnl   
dnl This hack is here until autoconf adds it
dnl Needed for Unixware: getmntent is on libgen.a
dnl
AC_CHECK_LIB(gen, getmntent, [LIBS="-lgen $LIBS"])

dnl
dnl This is from GNU fileutils, check aclocal.m4 for more information
dnl
AC_GET_FS_INFO

dnl
dnl Missing typedefs and replacements
dnl 

AC_TYPE_MODE_T
AC_CHECK_TYPE(umode_t, int)
AC_CHECK_TYPE(off_t, long)
AC_TYPE_PID_T
AC_TYPE_UID_T
AC_CHECK_TYPE(nlink_t, unsigned int)

AC_FUNC_MMAP
AC_FUNC_ALLOCA

AC_PATH_XTRA

dnl
dnl X11 support in the textmode edition. 
dnl

dnl These variables are only used when building the text edition MC binary
MCCFLAGS=""
MCLIBS=""
AC_SUBST(MCCFLAGS)
AC_SUBST(MCLIBS)

textmode_x11_support="no"
AC_ARG_WITH(tm-x-support,
	[--with-tm-x-support        Add X Window System support to the text edition],
	[if test x$withval = xyes; then
		MCCFLAGS="$X_CFLAGS"
		MCLIBS="$X_LIBS $X_PRE_LIBS -lX11 $X_EXTRA_LIBS"
		AC_DEFINE(HAVE_TEXTMODE_X11_SUPPORT)
		textmode_x11_support="yes"
	fi
])

dnl
dnl Network related functions
dnl

AC_CHECK_LIB(nsl, t_accept)
AC_CHECK_LIB(socket, socket)

have_socket=no
AC_CHECK_FUNCS(socket, have_socket=yes)
if test $have_socket = no; then
  # socket is not in the default libraries.  See if it's in some other.
  for lib in bsd socket inet; do
    AC_CHECK_LIB($lib, socket, [
        LIBS="$LIBS -l$lib"
	have_socket=yes
	AC_DEFINE(HAVE_SOCKET)
	break])
  done
fi

have_gethostbyname=no
AC_CHECK_FUNC(gethostbyname, [have_gethostbyname=yes])
if test $have_gethostbyname = no; then
  # gethostbyname is not in the default libraries.  See if it's in some other.
  for lib in bsd socket inet; do
    AC_CHECK_LIB($lib, gethostbyname, [LIBS="$LIBS -l$lib"; have_gethostbyname=yes; break])
  done
fi

AC_CHECK_FUNCS(socketpair)

dnl
dnl Sequent wants getprocessstats
dnl
AC_CHECK_LIB(seq, get_process_stats, [
	LIBS="$LIBS -lseq"
	AC_DEFINE(HAVE_GET_PROCESS_STATS)])

GNOME_VFS_CHECKS

dnl
dnl Install mcserv only if explicitly enabled
dnl
AC_ARG_ENABLE([mcserv-install],
	      [--enable-mcserv-install    Install mcserv - Midnight Commander file server])

AM_CONDITIONAL(MCSERV_INSTALL,
	       [test "x$enable_mcserv_install$mcserv" = xyesmcserv])

NETFILES=
if test $have_socket = yes; then
   NETFILES="\$(NETFILES)"
fi
AC_SUBST(NETFILES)

LIBVFS=""
LVFS=""
vfs_type="normal"
if test $use_vfs = yes
then
	LIBVFS="libvfs-mc.a"
	LVFS="-lvfs-mc"
	MCCPPFLAGS="$MCCPPFLAGS -I\$(vfsdir)"
	AC_MSG_RESULT([Using the VFS switch code])
	vfs_type="Midnight Commander Virtual File System"
fi
AC_SUBST(LIBVFS)
AC_SUBST(LVFS)

screen_manager=unknown
search_ncurses=false

XCURSES=""
AC_SUBST(XCURSES)

dnl AC_ARG_WITH(bsd-curses,
dnl [--with-bsd-curses         Used to compile with bsd curses, not very fancy],
dnl 	[search_ncurses=false
dnl	screen_manager="Ultrix/cursesX"
dnl	case $host_os in
dnl	ultrix*)
dnl	    THIS_CURSES=cursesX
dnl	    ;;
dnl	*)
dnl	    THIS_CURSES=curses
dnl	    ;;
dnl	esac
dnl
dnl	LIBS="$LIBS -l$THIS_CURSES -ltermcap"
dnl	AC_DEFINE(USE_BSD_CURSES)
dnl	XCURSES="xcurses.o"
dnl	AC_MSG_RESULT([Please note that some screen refreshs may fail])
dnl	AC_MSG_WARN([Use of the bsdcurses extension has some])
dnl	AC_MSG_WARN([display/input problems.])
dnl	AC_MSG_WARN([Reconsider using xcurses])
dnl])

AC_ARG_WITH(sunos-curses,
	[--with-sunos-curses        Used to force SunOS 4.x curses],[
	if test x$withval = xyes; then
		AC_USE_SUNOS_CURSES
	fi
])

AC_ARG_WITH(osf1-curses,
	[--with-osf1-curses	   Used to force OSF/1 curses],[
	if test x$withval = xyes; then
		AC_USE_OSF1_CURSES
	fi
])

AC_ARG_WITH(vcurses,
	[--with-vcurses[=incdir]    Used to force SysV curses],
	[if test x$withval = xyes; then :
        else
		CPPFLAGS="$CPPFLAGS -I$withval"
	fi
	AC_USE_SYSV_CURSES
])

mouse_lib="xterm only"
LGPM=""
case $host_os in
linux*)
    AC_ARG_WITH(gpm-mouse, 
	[--with-gpm-mouse[=base-dir]  Compile with gpm mouse support (Linux only)],
	[if test x$withval != xno
	then
		if test x$withval != xyes
		then
			LIBS="$LIBS -L$withval/lib"
			CPPFLAGS="$CPPFLAGS -I$withval/include"
		fi
		AC_DEFINE(HAVE_LIBGPM)
		mouse_lib="GPM and xterm"
		LGPM="-lgpm"
	fi],
	[AC_CHECK_LIB(gpm, Gpm_Repeat,
		[AC_DEFINE(HAVE_LIBGPM)
		mouse_lib="GPM and xterm"
		LGPM="-lgpm"],
		[AC_MSG_WARN([libgpm is missing or older than 0.18])],
		$LIBS)
	])
    ;;
esac
AC_SUBST(LGPM)

AC_ARG_WITH(ncurses,
	[--with-ncurses[=base-dir]    Compile with ncurses/locate base dir],
	[if test x$withval = xyes
	then
		search_ncurses=true
	else
		LIBS="$LIBS -L$withval/lib -lncurses"
		CPPFLAGS="$CPPFLAGS -I$withval/include"
		search_ncurses=false
		screen_manager="ncurses"
		AC_DEFINE(USE_NCURSES)
	fi
])

AC_ARG_WITH(hsc,
        [--with-hsc               Compile with support for the HSC firewall],
        [if test x$withval = xyes; then
                AC_DEFINE(HSC_PROXY, 1,
			  [Define if you want to use the HSC firewall])
        fi
])

dnl
dnl Check for Gnome
dnl
mx=""
libgtkedit=""
xvers="none"

GNOME_INIT_HOOK([
	mx=mx
	libgtkedit="libgtkedit.a"
	if test x"$xvers" = xnone; then
	    xvers="Gnome"
	else
	    xvers="Gnome+$xvers"
	fi
	gnomeicondir=`gnome-config --datadir`/pixmaps

dnl Check for new enough gnome-libs
	CFLAGS_save=$CFLAGS
	LIBS_save=$LIBS
	CFLAGS=`gnome-config --cflags gnomeui`
	LIBS=`gnome-config --libs gnomeui`

	AC_CHECK_LIB(gnomeui, gnome_window_icon_set_default_from_file,
			      [AC_DEFINE(HAVE_GNOME_WINDOW_ICON)])

	CFLAGS=$CFLAGS_save
	LIBS=$LIBS_save
])
AC_SUBST(gnomeicondir)
AC_SUBST(mx)
AC_SUBST(libgtkedit)
AC_SUBST(GNOMEGNORBA_LIBS)
AM_CONDITIONAL(GNOME, [test x"$mx" = xmx])

dnl
dnl Check for the -mandoc package
dnl
AC_CHECK_PROG(HAVE_nroff, nroff, true, false)
if $HAVE_nroff; then
    AC_MSG_CHECKING([for manual formatting macros])
    AC_CACHE_VAL(ac_cv_mandoc, [
    nroff -mandoc < /dev/null > /dev/null 2>&1 /dev/null
    if test $? = 0
    then
	ac_cv_mandoc=-mandoc
    else
	ac_cv_mandoc=-man
    fi
    ])
    MANDOC=$ac_cv_mandoc
    AC_MSG_RESULT($MANDOC)
else
    MANDOC=-man
fi
AC_SUBST(MANDOC)

dnl
dnl Check if nroff accepts -Tlatin1 or -Tascii
dnl
if $HAVE_nroff; then
    AC_MSG_CHECKING([if nroff accepts -Tlatin1 or -Tascii])
    AC_CACHE_VAL(ac_cv_nroff_tascii, [
    nroff -Tlatin1 < /dev/null > /dev/null 2>&1 /dev/null
    if test $? = 0
    then
	ac_cv_nroff_tascii=" -Tlatin1"
    else
        nroff -Tascii < /dev/null > /dev/null 2>&1 /dev/null
        if test $? = 0
        then
	    ac_cv_nroff_tascii=" -Tascii"
        else
    	    ac_cv_nroff_tascii=""
	fi
    fi
    ])
    if test "x$ac_cv_nroff_tascii" = x; then
	AC_MSG_RESULT(no)
    else
	AC_MSG_RESULT([yes,$ac_cv_nroff_tascii])
    fi
fi
TROFFASCII="$ac_cv_nroff_tascii"
AC_SUBST(TROFFASCII)

dnl
dnl Check for - option to file
dnl
AC_CHECK_PROG(HAVE_FILECMD, file, true, false)
if $HAVE_FILECMD; then
    AC_MSG_CHECKING([for - option to file command])
    AC_CACHE_VAL(ac_cv_filestdin, [[
    cat > conftest.c <<\EOF
/* A comment */
#if 0
#endif
void main(void)
{ return; }
EOF
    cat > conftest.sed <<\EOF
s/^[^:]*:[ 	]*//
s/[ 	]*$//
EOF
    filehyphen_1=`file conftest.c 2>/dev/null | sed -f conftest.sed`
    filehyphen_2=`cat conftest.c | file - 2>/dev/null | sed -f conftest.sed`
    if test "x$filehyphen_1" = "x$filehyphen_2"; then
	ac_cv_filestdin=yes
    else
	ac_cv_filestdin=no
    fi
    rm conftest.c conftest.sed
    ]])

    if test x$ac_cv_filestdin = xyes; then
	AC_DEFINE(FILE_STDIN, 1,
		  [Define if the file command accepts - for stdin])
    fi
    filestdin=$ac_cv_filestdin
    AC_MSG_RESULT([$filestdin])

    dnl
    dnl Check for -L option to file
    dnl

AC_MSG_CHECKING([for -L option to file command])
AC_CACHE_VAL(ac_cv_filel, [
file -L . > /dev/null 2>&1
if test $? = 0
then
    ac_cv_filel=yes
else
    ac_cv_filel=no
fi
])
if test x$ac_cv_filel = xyes; then
    AC_DEFINE(FILE_L, 1, [Define if the file command accepts the -L option])
fi
filel=$ac_cv_filel
AC_MSG_RESULT([$filel])
fi 

dnl
dnl Check to see if grep program allowes dash to denote stdin 
dnl
AC_MSG_CHECKING([for - option to grep command])
AC_CACHE_VAL(ac_cv_grep_stdin, [
    echo "grep_test" | grep grep_test - >/dev/null 2>&1
    if test $? = 0; then
	ac_cv_grep_stdin=yes
    else
	ac_cv_grep_stdin=no
    fi
])
if test x$ac_cv_grep_stdin = xyes; then
    AC_DEFINE(GREP_STDIN, 1, [Define if the grep command accepts - for stdin])
fi
AC_MSG_RESULT([$ac_cv_grep_stdin])

dnl
dnl The subshell support
dnl

AC_MSG_CHECKING([for subshell support])
AC_ARG_WITH(subshell,
	[--with-subshell            If you want to use a concurrent shell],
	[result=no
	if test x$withval = xoptional
	then
		AC_DEFINE(SUBSHELL_OPTIONAL)
		AC_DEFINE(HAVE_SUBSHELL_SUPPORT)
		result="optional"
	fi
	if test x$withval = xyes
        then 
		AC_DEFINE(HAVE_SUBSHELL_SUPPORT)
		result="yes"
	fi],
	[dnl Default: provide the subshell support on non-ultrix machines
	case $host_os in
	ultrix*)
		result=no
		;;
	*)
		AC_DEFINE(HAVE_SUBSHELL_SUPPORT)
		result=yes
		;;
	esac
])
AC_MSG_RESULT([$result])
subshell="$result"

dnl
dnl Memory Allocation Debugger
dnl
mem_debug="none"
AC_ARG_WITH(mad,
[--with-mad                 Developers only: activates MAD (memory debugger)],
	[if test x$withval = xyes; then
	mem_debug="Janne's MAD library"
	AC_DEFINE(HAVE_MAD)
	AC_MSG_RESULT([compiling with memory leak detector])
fi])

dnl
dnl Electric Fence - another memory debugger
dnl
AC_ARG_WITH(efence, 
[--with-efence              Developers only: activates Electric Fence],
	[if test x$withval = xyes; then
	LIBS="$LIBS -lefence"
	AC_MSG_RESULT([compiling with Electric fence])
	mem_debug="Electric Fence"
fi])

INTLSUB=""
LINTL=""
if test x$USE_NLS = xyes; then
    if test x$USE_INCLUDED_LIBINTL = xyes; then
	CPPFLAGS="$CPPFLAGS -I\$(top_builddir)/intl"
	LINTL="-L\$(top_builddir)/intl -lintl"
    fi
    INTLSUB=intl
fi
AC_SUBST(INTLSUB)
AC_SUBST(LINTL)

dnl
dnl To force mmap support
dnl We use only part of the functionality of mmap, so on AIX,
dnl it's possible to use mmap, even if it doesn't pass the autoconf test.
dnl
AC_ARG_WITH(mmap, 
	[--with-mmap                To force using the mmap call (AIX)],
	[if test x$withval = xyes; then
	AC_DEFINE(HAVE_MMAP)
        AC_MSG_RESULT([forcing MMAP support])
fi])

slang_check_lib=true
slang_term=""
slang_use_system_installed_lib=false
AC_CHECK_LIB(slang,SLang_init_tty,
	[AC_CHECK_HEADERS(slang.h)
	if test x$ac_cv_header_slang_h = xyes
	then
             slang_use_system_installed_lib=true
	     slang_check_lib=false
        else
	     AC_CHECK_HEADERS(slang/slang.h)
	     if test x$ac_cv_header_slang_slang_h = xyes
	     then
		 slang_use_system_installed_lib=true
		 slang_check_lib=false
	     fi
	fi
])

AC_ARG_WITH(terminfo,
        [--with-terminfo            SLANG: Force usage of terminfo],[
	if test x$withval = xyes; then
		AC_USE_TERMINFO
		slang_check_lib=false
		slang_use_system_installed_lib=false
	fi]
)

AC_ARG_WITH(termcap,
	[--with-termcap             SLANG: Force usage of termcap],[
	if test x$withval = xyes; then
		AC_USE_TERMCAP
		slang_check_lib=false
		slang_use_system_installed_lib=false
	fi]
)

AC_ARG_WITH(included-slang,
	[--with-included-slang      SLANG: use the SLang library included here],[
	if test x$withval = xyes; then
	    slang_use_system_installed_lib=false
	    slang_check_lib=true
	fi]
)

LIBSLANG=""
LSLANG=""
AC_ARG_WITH(slang,
	[--with-slang		   Compile with the slang screen manager],[
	if test x$withval = xyes; then
		AC_WITH_SLANG
	fi
])

AC_SUBST(LIBSLANG)
AC_SUBST(LSLANG)

LIBEDIT_A=""
MCEDIT=""
LEDIT=""
EDIT_msg=""
AC_ARG_WITH(edit,
        [--with-edit                Define INTERNAL_EDIT],
	[if test x$withval = xyes
	then
		AC_WITH_EDIT
	else
		EDIT_msg="no"
	fi], 
	[dnl Default: provide the internal editor
	AC_WITH_EDIT
])
AC_SUBST(LIBEDIT_A)
AC_SUBST(MCEDIT)
AC_SUBST(LEDIT)

AC_ARG_WITH(netrc,
	[--with-netrc               Compile with ftp .netrc support],[
	if test x$withval = xyes; then
		AC_DEFINE(USE_NETRC, 1,
			  [Define to use .netrc for FTP connections])
		AC_MSG_RESULT([ftpfs will have .netrc parsing code])
	fi
])

undelfs_o=""

if test $use_vfs = yes; then
    AC_ARG_WITH(ext2undel,
        [--with-ext2undel           Compile with ext2 undelete code],[
	if test x$withval != xno;
	then
		if test x$withval != xyes
		then
			LIBS="$LIBS -L$withval/lib"
			CPPFLAGS="$CPPFLAGS -I$withval/include"
		fi
		AC_EXT2_UNDEL
	fi],[
	dnl Default: detect
	AC_CHECK_LIB(ext2fs, ext2fs_close, [AC_EXT2_UNDEL],,-lcom_err)
    ])
fi

AC_SUBST(undelfs_o)
	
if $search_ncurses
then
    AC_CHECKING([location of ncurses.h file])

    AC_NCURSES(/usr/include, ncurses.h, -lncurses,, "ncurses on /usr/include")
    AC_NCURSES(/usr/include/ncurses, ncurses.h, -lncurses, -I/usr/include/ncurses, "ncurses on /usr/include/ncurses")
    AC_NCURSES(/usr/local/include, ncurses.h, -L/usr/local/lib -lncurses, -I/usr/local/include, "ncurses on /usr/local")
    AC_NCURSES(/usr/local/include/ncurses, ncurses.h, -L/usr/local/lib -L/usr/local/lib/ncurses -lncurses, -I/usr/local/include/ncurses, "ncurses on /usr/local/include/ncurses")

    AC_NCURSES(/usr/local/include/ncurses, curses.h, -L/usr/local/lib -lncurses, -I/usr/local/include/ncurses -DRENAMED_NCURSES, "renamed ncurses on /usr/local/.../ncurses")

    AC_NCURSES(/usr/include/ncurses, curses.h, -lncurses, -I/usr/include/ncurses -DRENAMED_NCURSES, "renamed ncurses on /usr/include/ncurses")

    dnl
    dnl We couldn't find ncurses, try SysV curses
    dnl
    if $search_ncurses 
    then
        AC_EGREP_HEADER(init_color, /usr/include/curses.h,
	    AC_USE_SYSV_CURSES)
	AC_EGREP_CPP(USE_NCURSES,[
#include <curses.h>
#ifdef __NCURSES_H
#undef USE_NCURSES
USE_NCURSES
#endif
],[
	CPPFLAGS="$CPPFLAGS -DRENAMED_NCURSES"
        AC_DEFINE(USE_NCURSES)
        search_ncurses=false
        screen_manager="ncurses installed as curses"
])
    fi

    dnl
    dnl Try SunOS 4.x /usr/5{lib,include} ncurses
    dnl The flags USE_SUNOS_CURSES, USE_BSD_CURSES and BUGGY_CURSES
    dnl should be replaced by a more fine grained selection routine
    dnl
    if $search_ncurses
    then
	if test -f /usr/5include/curses.h
	then
	    AC_USE_SUNOS_CURSES
        fi
    else
        # check for ncurses version, to properly ifdef mouse-fix
	AC_MSG_CHECKING([for ncurses version])
	ncurses_version=unknown
cat > conftest.$ac_ext <<EOF
[#]line __oline__ "configure"
#include "confdefs.h"
#ifdef RENAMED_NCURSES
#include <curses.h>
#else
#include <ncurses.h>
#endif
#undef VERSION
VERSION:NCURSES_VERSION
EOF
        if (eval "$ac_cpp conftest.$ac_ext") 2>&AC_FD_CC |
  egrep "VERSION:" >conftest.out 2>&1; then
            ncurses_version=`cat conftest.out|sed -e 's/^[[^"]]*"//' -e 's/".*//'`
	fi
	rm -rf conftext*
        AC_MSG_RESULT([$ncurses_version])
	case "$ncurses_version" in
	4.[[01]])
            AC_DEFINE(NCURSES_970530,2)
            ;;
	1.9.9g)
            AC_DEFINE(NCURSES_970530,1)
            ;;
	1*)
            AC_DEFINE(NCURSES_970530,0)
            ;;
	esac
    fi
fi


dnl If ncurses exports the ESCDELAY variable it should be set to 0
dnl or you'll have to press Esc three times to dismiss a dialog box.
dnl
if test -n "$ncurses_version"; then
  AC_CACHE_CHECK([for ESCDELAY variable],
		 [mc_cv_ncurses_escdelay],
		 [AC_TRY_COMPILE([], [
			extern int ESCDELAY;
			int main ()
			{
			  ESCDELAY = 0;
			}
			],
			[mc_cv_ncurses_escdelay=yes],
			[mc_cv_ncurses_escdelay=no]
		  )
  ])
  if test "$mc_cv_ncurses_escdelay" = yes; then
    AC_DEFINE(HAVE_ESCDELAY, 1,
	      [Define if ncurses has ESCDELAY variable])
  fi
fi


dnl Ncurses may be linked against libgpm. Change LIBS temporary for
dnl check for resizeterm and keyok.
dnl
SAVED_LIBS="$LIBS"
LIBS="$LIBS $LGPM"
AC_CHECK_FUNCS(resizeterm keyok)
LIBS="$SAVED_LIBS"

if test "x$screen_manager" = "xunknown"; then
    AC_WITH_SLANG
fi

dnl
dnl The variables used for expanding the auto saver.
dnl
cons_saver=""
install_saver="no"
PAMLIBS=""
case $host_os in
linux*)
    cons_saver="cons.saver"
    install_saver="yes"

    dnl
    dnl On Linux, check for PAM authentication available
    dnl
    AC_CHECK_LIB(pam, pam_start, [
	AC_DEFINE(HAVE_PAM)
	PAMLIBS="-lpam -ldl"
    ],[],[-ldl])
    ;;
esac
AC_SUBST(cons_saver)
AC_SUBST(PAMLIBS)

dnl
dnl We need sed in order to fix the library files 
dnl
    SEDCMD="sed 's/-man/$MANDOC/'"
    SEDCMD2="sed 's%@prefix@%\$(prefix)%'"
AC_SUBST(SEDCMD)
AC_SUBST(SEDCMD2)


dnl
dnl Basic support for charset conversion.
dnl May be useful e.g. for converting help and hints.
dnl
have_iconv=
AC_CHECK_FUNCS(iconv, [have_iconv=yes])

dnl
dnl User visible support for charset conversion.
dnl
AC_ARG_ENABLE([charset],
	      [--enable-charset           Support for charset selection and conversion])
have_charset=
if test "x$enable_charset" = xyes; then
  if test -z "$have_iconv"; then
    AC_MSG_WARN([Cannot enable charset support because iconv function is missing])
  else
    AC_DEFINE(HAVE_CHARSET, 1,
	      [Define to enable charset selection and conversion])
    have_charset=yes
  fi
fi

AM_CONDITIONAL(CHARSET, [test -n "$have_charset"])


dnl
dnl This code should be moved to the ac_WITH_SLANG
dnl
dnl We check for the existance of setupterm on curses library
dnl this is required to load certain definitions on some termcaps
dnl editions (AIX and OSF/1 I seem to remember).
dnl Note that we avoid using setupterm 
case $screen_manager in
SLang*)
	case $host_os in
	linux*)
		;;
	*)
		AC_CHECK_LIB(curses,setupterm,
			[AC_TRY_COMPILE([
#include <curses.h>
#include <term.h>],[
   if (key_end == parm_insert_line)
 	return 1;
   return 0;
],
			[LIBS="$LIBS -lcurses"
			AC_DEFINE(USE_SETUPTERM)])
		])
	esac
	;;
esac

LIBS="$LIBS $posix_libs"

AC_SUBST(CFLAGS)
AC_SUBST(CPPFLAGS)
AC_SUBST(MCCPPFLAGS)
AC_SUBST(LDFLAGS)
AC_SUBST(LIBS)

MCF=./Make.common
AC_SUBST_FILE(MCF)

dnl
dnl Output configuration files
dnl
dnl It's a hack to accomodate both Autoconf 2.13 and the 2.49x series,
dnl It's needed until Autoconf 2.50 is released.
ifelse(AC_ACVERSION, [2.13],
[mc_subdirs=
if test "x$SAMBAFILES" != x; then
  mc_subdirs=vfs/samba
  AC_CONFIG_SUBDIRS([$mc_subdirs])
fi],
[if test "x$SAMBAFILES" != x; then
  AC_CONFIG_SUBDIRS([vfs/samba])
fi])

AM_CONDITIONAL(USE_SAMBA_FS, [test "x$SAMBAFILES" != x])

AC_OUTPUT([
Make.common 
Makefile 
mc.spec
doc/Makefile 
doc-gnome/Makefile
doc-gnome/C/Makefile
doc-gnome/C/figs/Makefile
vfs/Makefile:vfs/Make-mc.in
vfs/extfs/Makefile
lib/Makefile
gnome/Makefile 
gnome/mc.keys.in
idl/Makefile
src/Makefile
slang/Makefile 
edit/Makefile 
gtkedit/Makefile 
syntax/Makefile
new_icons/Makefile 
pc/Makefile

lib/mc.ext
lib/mc.sh
lib/mc.csh

mcfn_install

vfs/extfs/deb
vfs/extfs/ftplist
vfs/extfs/lslR
vfs/extfs/uar
vfs/extfs/ucpio
vfs/extfs/ulha 
vfs/extfs/uha
vfs/extfs/urar
vfs/extfs/uzoo

doc/mc.1 doc/mcedit.1 doc/mcserv.8

intl/Makefile po/Makefile.in
],[sed -e "/POTFILES =/r po/POTFILES" po/Makefile.in > po/Makefile])

if echo "$screen_manager" | grep -q "SLang" ; then
    screen_manager="${screen_manager}${slang_term}"
fi

echo "
Configuration:

  Source code location:       ${srcdir}
  Compiler:	              ${CC}
  Compiler flags:             ${CFLAGS}
  File system:                ${vfs_type}
			      ${vfs_flags}
  Text mode screen manager:   ${screen_manager}
  Install console saver:      ${install_saver}
  Text mode mouse library:    ${mouse_lib}
  Text mode X11 support:      ${textmode_x11_support}
  Debugger code:              ${mem_debug}
  With subshell support:      ${subshell}
  X11 versions:               ${xvers}
  Internal editor:            ${EDIT_msg}
  Install path:		      ${prefix}/bin, ${prefix}/lib/mc
"