dnl
dnl Configure.in file for the Midnight Commander
dnl

AC_INIT([GNU Midnight Commander], [], [mc-devel@gnome.org])
AC_PREREQ(2.52)
AC_CONFIG_SRCDIR(src/main.c)
AC_CONFIG_AUX_DIR(config)
AM_INIT_AUTOMAKE(mc, 4.6.0-pre1a)

AM_CONFIG_HEADER(config.h)
AM_MAINTAINER_MODE

AC_CANONICAL_HOST

AC_AIX
AC_MINIX
AC_ISC_POSIX

AC_PROG_CC_STDC


dnl
dnl Find glib 1.2.x.  This check should be kept close to the beginning,
dnl as it tends to fail often.
dnl
dnl Klugde for FreeBSD, where glib-config is renamed to glib12-config.
AC_PATH_PROGS([GLIB_CONFIG], [glib-config glib12-config],,
	      [$PATH:/usr/local/bin])
AC_ARG_VAR([GLIB_CONFIG], [Path to glib-config])
AM_PATH_GLIB(1.2.0,,[AC_MSG_ERROR([Test for GLIB failed.  MC requires GLIB.])])
LIBS="$LIBS $GLIB_LIBS"


AC_HEADER_MAJOR
AC_C_CONST
AC_SYS_LARGEFILE

AC_PROG_LN_S
AC_CHECK_TOOL(AR, ar, ar)

dnl Only list browsers here that can be run in background (i.e. with `&')
AC_CHECK_PROGS(X11_WWW, [gnome-moz-remote mozilla konqueror opera netscape])

dnl
dnl Ovverriding mmap support.  This has to be before AC_FUNC_MMAP is used.
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)],
	[case $withval in
yes)
	ac_cv_func_mmap_fixed_mapped=yes
	AC_MSG_NOTICE([forcing MMAP support])
	;;
no)
	ac_cv_func_mmap_fixed_mapped=no
	AC_MSG_NOTICE([disabling MMAP support])
	;;
esac])
AC_FUNC_MMAP

if test "x$ALL_LINGUAS" = x; then
ALL_LINGUAS="az be bg ca cs da de el es es_ES eu fi fr hu it ja ko lv nl no pl pt pt_BR ro ru sk sl sv uk ta tr wa zh_CN zh_TW"
fi

dnl
dnl Internationalization
dnl
AM_GNU_GETTEXT
if test "x$USE_INCLUDED_LIBINTL" = xyes; then
    CPPFLAGS="$CPPFLAGS -I\$(top_builddir)/intl -I\$(top_srcdir)/intl"
fi

dnl
dnl Hack to make extraconf.h visible even if compiling outside srcdir.
dnl
CPPFLAGS="$CPPFLAGS -I\$(top_srcdir)"

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

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 pwd.h sys/statfs.h \
	sys/time.h sys/timeb.h sys/select.h sys/ioctl.h stropts.h])

AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_HEADER_DIRENT
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 strftime \
		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)

dnl
dnl Password encryption support for mcserv
dnl Check if function crypt needs a prototype
dnl
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, 1,
	  [Define if function `crypt' needs a prototype])
fi

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 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 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_ALLOCA
AC_FUNC_STRCOLL

dnl
dnl X11 support.
dnl

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

textmode_x11_support="no"
AC_ARG_WITH(tm-x-support,
	[--with-tm-x-support        Try getting events from X Window System],
	[if test x$withval = xyes; then
		AC_PATH_XTRA
		MCCFLAGS="$X_CFLAGS"
		MCLIBS="$X_LIBS $X_PRE_LIBS -lX11 $X_EXTRA_LIBS"
		AC_DEFINE(HAVE_TEXTMODE_X11_SUPPORT, 1,
			  [Define to enable getting events from X Window System])
		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, 1,
		  [Define if you have function `get_process_stats' and
have to use that instead of gettimeofday])])

MC_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])

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

vfs_type="normal"
if test $use_vfs = yes
then
	AC_MSG_NOTICE([enabling VFS code])
	vfs_type="Midnight Commander Virtual File System"
fi

dnl This should be unadorned "slang" or "ncurses"
screen_type=""

dnl Screen manager name (for the output only)
screen_manager=unknown

mouse_lib="xterm only"
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, 1,
			  [Define to enable gpm mouse support on Linux])
		mouse_lib="GPM and xterm"
		MCLIBS="-lgpm $MCLIBS"
	fi],
	[AC_CHECK_LIB(gpm, Gpm_Repeat,
		[AC_DEFINE(HAVE_LIBGPM)
		mouse_lib="GPM and xterm"
		MCLIBS="-lgpm $MCLIBS"],
		[AC_MSG_WARN([libgpm is missing or older than 0.18])],
		[$LIBS])
	])
    ;;
esac

AC_ARG_WITH(ncurses,
	[--with-ncurses[=base-dir]    Compile with ncurses/locate base dir],
	[if test x$withval != xyes; then
		MCLIBS="$MCLIBS -L$withval/lib"
		CPPFLAGS="$CPPFLAGS -I$withval/include"
	fi

	AC_CHECK_HEADERS([ncurses/curses.h ncurses.h curses.h],
			 [ncurses_h_found=yes; break])
	if test -z "$ncurses_h_found"; then
	    AC_MSG_ERROR([Could not find ncurses header])
	fi

	dnl curses_version is specific to ncurses, it's not in old curses
	AC_CHECK_LIB(ncurses, has_colors, [MCLIBS="$MCLIBS -lncurses"],
		     [AC_MSG_ERROR([Could not find ncurses library])])

	screen_type="ncurses"
	screen_manager="ncurses"
	AC_DEFINE(USE_NCURSES, 1,
		  [Define to use ncurses for screen management])
])

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 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
    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 


AC_MSG_CHECKING([for subshell support])
AC_ARG_WITH(subshell,
	[--with-subshell=optional   To disable concurrent shell by default
--without-subshell         To disable concurrent shell completely],
	[result=no
	if test x$withval = xoptional
	then
		AC_DEFINE(SUBSHELL_OPTIONAL, 1,
			  [Define to make subshell support optional])
		result="optional"
	fi
	if test x$withval = xyes
        then 
		result="yes"
	fi],
	[dnl Default: enable the subshell support
	result="yes"
])
if test "x$result" != xno; then
	AC_DEFINE(HAVE_SUBSHELL_SUPPORT, 1,
		  [Define to enable subshell support])
fi
AC_MSG_RESULT([$result])
subshell="$result"

if test "x$screen_type" != xncurses; then
	slang_check_lib=true
	slang_term=""
	slang_use_system_installed_lib=false
	AC_CHECK_LIB(slang,SLang_init_tty,
		[AC_CHECK_HEADERS([slang.h slang/slang.h],
				  [slang_h_found=yes; break])
		if test "x$slang_h_found" = 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]
)

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

LIBEDIT_A=""
MCEDIT=""
LEDIT=""
EDIT_msg=""
AC_ARG_WITH(edit,
        [--with-edit                Enable internal editor],
	[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)

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)
	

dnl Ncurses specific checks
dnl
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 "x$screen_type" = xncurses; then
  save_LIBS="$LIBS"
  LIBS="$MCLIBS $LIBS"
  AC_CACHE_CHECK([for ESCDELAY variable],
		 [mc_cv_ncurses_escdelay],
		 [AC_TRY_COMPILE([], [
			extern int ESCDELAY;
			int main ()
			{
			  ESCDELAY = 0;
			}
			],
			[mc_cv_ncurses_escdelay=yes],
			[mc_cv_ncurses_escdelay=no]
		  )
  ])
  if test "$mc_cv_ncurses_escdelay" = yes; then
    AC_DEFINE(HAVE_ESCDELAY, 1,
	      [Define if ncurses has ESCDELAY variable])
  fi

  AC_CHECK_FUNCS(resizeterm)
  LIBS="$save_LIBS"
fi

if test "x$screen_type" = "x"; 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, 1,
		  [Define if PAM (Pluggable Authentication Modules) is available])
	PAMLIBS="-lpam -ldl"
    ],[],[-ldl])
    ;;
esac
AC_SUBST(cons_saver)
AC_SUBST(PAMLIBS)

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$enable_charset" = xyes; then
  if test -z "$am_cv_func_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

if test "$GLIBC21" != yes; then
    AC_DEFINE(USE_INCLUDED_REGEX, 1, [Use the regex included here])
fi

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 
if test "x$screen_type" = xslang; then
	case $host_os in
	linux*)
		;;
	*)
		AC_CHECK_LIB(curses,setupterm,
			[AC_TRY_COMPILE([
#include <curses.h>
#include <term.h>],[
   if (key_end == parm_insert_line)
 	return 1;
   return 0;
],
			[MCLIBS="$MCLIBS -lcurses"
			AC_DEFINE(USE_SETUPTERM, 1,
				  [Define to use function `setupterm'
from `curses' library in S-Lang])])
		])
	esac
fi

LIBS="$LIBS $posix_libs"

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

dnl Version for the RedHat package, without dashes
RH_VERSION=`echo $VERSION | sed 's/-//'`
AC_SUBST(RH_VERSION)

if test "x$SAMBAFILES" != x; then
  AC_CONFIG_SUBDIRS([vfs/samba])
fi

AM_CONDITIONAL(USE_EDIT, [test -n "$LIBEDIT_A"])
AM_CONDITIONAL(USE_VFS, [test "x$use_vfs" = xyes])
AM_CONDITIONAL(USE_VFS_NET, [test -n "$NETFILES"])
AM_CONDITIONAL(USE_UNDEL_FS, [test -n "$undelfs_o"])
AM_CONDITIONAL(USE_SAMBA_FS, [test -n "$SAMBAFILES"])
AM_CONDITIONAL(MCSERV_INSTALL,
	       [test "x$enable_mcserv_install$mcserv" = xyesmcserv])
AM_CONDITIONAL(INCLUDED_SLANG,
	       [test "x$slang_use_system_installed_lib" = xfalse])
AM_CONDITIONAL(CHARSET, [test -n "$have_charset"])
AM_CONDITIONAL(CONS_SAVER, [test -n "$cons_saver"])

AH_BOTTOM([#include <extraconf.h>])

AC_CONFIG_FILES([
Makefile 
mc.spec
doc/Makefile 
vfs/Makefile
vfs/extfs/Makefile
lib/Makefile
src/Makefile
slang/Makefile 
edit/Makefile 
syntax/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
doc/es/mc.1 doc/es/Makefile
doc/hu/Makefile
doc/it/mc.1 doc/it/Makefile
doc/ru/mc.1 doc/ru/Makefile

intl/Makefile po/Makefile.in
])

AC_CONFIG_COMMANDS(potfiles,
    [grep ^top_builddir po/Makefile.in >/dev/null && sed -e "/POTFILES =/r po/POTFILES" po/Makefile.in > po/Makefile])

AC_OUTPUT

if test "x$screen_type" = xslang; then
    screen_manager="${screen_manager}${slang_term}"
fi

echo "
Configuration:

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