dnl Process this file with autoconf to produce a configure script.
dnl Author: Michael Patra   <micky@marie.physik.tu-berlin.de>
dnl                         <patra@itp1.physik.tu-berlin.de>
AC_REVISION([configure.in 1.00])
AC_INIT(controls/edit.c)		
AC_CONFIG_HEADER(include/config.h)
AC_CONFIG_AUX_DIR(tools)

dnl **** Command-line arguments ****

dnl Default values
LIBEXT=so       # library type .so or .a
TRACE_MSGS=yes	# the TRACE() macro
DEBUG_MSGS=yes	# the TRACE(), WARN(), and FIXME() macros.
CURSES=yes
OPENGL=normal

AC_ARG_ENABLE(debug,
[  --disable-debug         compile out all debugging messages],
[if test "$enableval" = "no"; then DEBUG_MSGS="no"; fi])

AC_ARG_ENABLE(opengl,
[  --enable-opengl         force usage of OpenGL even if the latter is thread-safe via pthread],
[if test "$enableval" = "no"; then OPENGL="no"; elif test "$enableval" = "yes"; then OPENGL="yes"; fi])

AC_ARG_ENABLE(trace,
[  --disable-trace         compile out TRACE messages],
[if test "$enableval" = "no"; then TRACE_MSGS="no"; fi])

AC_ARG_WITH(curses,
[  --without-curses        do not use curses],
[if test "$withval" = "no"; then CURSES="no"; fi])

AC_ARG_WITH(reentrant-x,
[  --without-reentrant-x   compile for use with non-reentrant X libraries])

AC_SUBST(OPTIONS)

if test "$DEBUG_MSGS" = "no"
then
    AC_DEFINE(NO_DEBUG_MSGS)
    AC_DEFINE(NO_TRACE_MSGS)
else
    if test "$TRACE_MSGS" = "no"
    then
        AC_DEFINE(NO_TRACE_MSGS)
    fi
fi

dnl **** Check for some programs ****

AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_CPP
AC_PATH_XTRA
AC_PROG_YACC
AC_PROG_LEX
AC_CHECK_PROGS(XLEX,$LEX flex lex,none)
if test "$XLEX" = "none"
then
	echo "*** Error: No suitable lex found. ***"
	echo "    Please install the 'flex' package."
	exit 1
fi
AC_DECL_YYTEXT
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_PROG_LN_S
AC_CHECK_PROG(C2MAN,c2man,c2man,\$(TOPSRCDIR)/tools/c2man.pl)
AC_PATH_PROG(LDCONFIG, ldconfig, true, /sbin:/usr/sbin:$PATH)
AC_CYGWIN
AC_CHECK_PROG(DLLWRAP,dllwrap,dllwrap,false)

dnl Check for lint
AC_CHECK_PROGS(LINT, lclint lint)
if test "$LINT" = "lint"
then
  LINTFLAGS="$LINTFLAGS -errchk=%all,no%longptr64 -errhdr=%user -Ncheck=macro -Nlevel=4"
  dnl LINTFLAGS='-D_SIZE_T "-Dsize_t=unsigned long" -errchk=longptr64'
fi
AC_SUBST(LINT)
AC_SUBST(LINTFLAGS)

if test "$CYGWIN" = "yes"
then
    LDCOMBINE="ld -r --enable-stdcall-fixup"
else
    LDCOMBINE="ld -r"
fi
AC_SUBST(LDCOMBINE)

dnl **** Check for some libraries ****

dnl Check for -lm for BeOS
AC_CHECK_LIB(m,sqrt)
dnl Check for -li386 for NetBSD and OpenBSD
AC_CHECK_LIB(i386,i386_set_ldt)
dnl Check for -lossaudio for NetBSD
AC_CHECK_LIB(ossaudio,_oss_ioctl)
dnl Check for -lw for Solaris
AC_CHECK_FUNCS(iswalnum,,AC_CHECK_LIB(w,iswalnum))
dnl Check for -lnsl for Solaris
AC_CHECK_FUNCS(gethostbyname,,AC_CHECK_LIB(nsl,gethostbyname))
dnl Check for -lsocket for Solaris
AC_CHECK_FUNCS(connect,,AC_CHECK_LIB(socket,connect))
dnl Check for -lxpg4 for FreeBSD
AC_CHECK_LIB(xpg4,_xpg4_setrunelocale)
dnl Check for -lmmap for OS/2
AC_CHECK_LIB(mmap,mmap)
dnl Check for openpty
AC_CHECK_FUNCS(openpty,,
	AC_CHECK_LIB(util,openpty,
		AC_DEFINE(HAVE_OPENPTY)
		LIBS="$LIBS -lutil"
	))

AC_CHECK_HEADERS(dlfcn.h,
	AC_CHECK_FUNCS(dlopen,
		AC_DEFINE(HAVE_DL_API),
    		AC_CHECK_LIB(dl,dlopen,
			AC_DEFINE(HAVE_DL_API)
			LIBS="$LIBS -ldl",
			LIBEXT="a"
		)
	),
	LIBEXT="a"
)
AC_SUBST(XLIB)
AC_SUBST(X_DLLS)
X_DLLS=""
AC_SUBST(XFILES)
XFILES=""
AC_SUBST(OPENGLFILES)
OPENGLFILES=""
AC_SUBST(OPENGL32_DLL)
OPENGL32_DLL=""
if test "$have_x" = "yes"
then
    XLIB="-lXext -lX11"
    ac_save_CPPFLAGS="$CPPFLAGS"
    CPPFLAGS="$CPPFLAGS $X_CFLAGS"

    dnl *** Check for -lXpm
    AC_CHECK_HEADERS(X11/xpm.h,
      [ dnl *** If X11/xpm.h exists...
        AC_CHECK_LIB(Xpm, XpmCreatePixmapFromData,
          [ AC_DEFINE(HAVE_LIBXXPM) X_PRE_LIBS="$X_PRE_LIBS -lXpm"],,
          $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
        )
      ],
      [ dnl *** If X11/xpm.h does not exist...
        dnl NOTE: autoconf does not allow commas inside the third 
        dnl       parameter to AC_CHECK_HEADERS, due to some quoting
        dnl       magic it does.
	echo "Redhat		:	xpm xpm-devel"
	echo "Caldera OpenLinux	:	xpm xpm-devel xpm-devel-static"
	echo "SuSE		:	xpm"
	echo "Debian/Corel Linux: 	xpm4g xpm4g-dev"
	echo
	echo "Or get the sources from ftp.x.org and all its mirror sites from "
	echo "the directory /contrib/libraries."
	echo
	exit 1
      ]
    )

    dnl *** All three of the following tests require X11/Xlib.h
    AC_CHECK_HEADERS(X11/Xlib.h,
      [
        dnl *** Check for X keyboard extension
        AC_CHECK_HEADERS(X11/XKBlib.h,
            [ dnl *** If X11/XKBlib.h exists...
              AC_CHECK_LIB(X11, XkbQueryExtension,
              AC_DEFINE(HAVE_XKB),,
              $X_LIBS -lXext -lX11 $X_EXTRA_LIBS)
            ],
            AC_MSG_WARN([XKB extension not found!!])
        )

        dnl *** Check for X Shm extension
        AC_CHECK_HEADERS(X11/extensions/XShm.h,
            [ dnl *** If X11/extensions/XShm.h exists...
              AC_CHECK_LIB(Xext, XShmQueryExtension,
              AC_DEFINE(HAVE_LIBXXSHM),,
              $X_LIBS -lXext -lX11 $X_EXTRA_LIBS)
            ],
            AC_MSG_WARN([Xshm extension not found!!])
        )

        dnl *** Check for X shape extension
        AC_CHECK_HEADERS(X11/extensions/shape.h,
            [ dnl *** If X11/extensions/shape.h exists...
              AC_CHECK_LIB(Xext,XShapeQueryExtension,
	      AC_DEFINE(HAVE_LIBXSHAPE),,
	      $X_LIBS -lXext -lX11 $X_EXTRA_LIBS)
	    ],
	    AC_MSG_WARN([XShape extension not found!!])
	)
        
        dnl *** Check for XFree86 DGA / DGA 2.0 extension
        AC_CHECK_HEADERS(X11/extensions/xf86dga.h,
            [ dnl *** If X11/extensions/xf86dga.h exists, check 
              dnl *** for XDGAQueryExtension()...
              AC_CHECK_LIB(Xxf86dga, XDGAQueryExtension,
                [ dnl *** If found...
                  AC_DEFINE(HAVE_LIBXXF86DGA2)
                  AC_DEFINE(HAVE_LIBXXF86DGA)
                  X_PRE_LIBS="$X_PRE_LIBS -lXxf86dga"
               ],
                [ dnl *** If not found, look for XF86DGAQueryExtension()
                  dnl *** instead (DGA 2.0 not found)...
                  AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension,
                    [ AC_DEFINE(HAVE_LIBXXF86DGA)
                      X_PRE_LIBS="$X_PRE_LIBS -lXxf86dga"
                    ],,
                    $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
                  )
                ],
                $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
              )
            ],
            AC_MSG_WARN([DGA extension not found!!])
        )

        dnl *** Check for XFree86 VMODE extension
        AC_CHECK_HEADERS(X11/extensions/xf86vmode.h,
            [ dnl *** If X11/extensions/xf86vmode.h exists...
                AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension,
                  [ AC_DEFINE(HAVE_LIBXXF86VM)
                     X_PRE_LIBS="$X_PRE_LIBS -lXxf86vm"
                  ],,
                  $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
                )
            ],
            AC_MSG_WARN([XFree86 VMODE extension not found!!])
        )

        dnl *** Check for XVideo extension supporting XvImages
        AC_CHECK_HEADERS(X11/extensions/Xvlib.h,
            [ dnl *** If X11/extensions/Xvlib.h exists...
                AC_CHECK_LIB(Xv, XvShmCreateImage,
                  [ AC_DEFINE(HAVE_XVIDEO)
                     X_PRE_LIBS="$X_PRE_LIBS -lXv"
                  ],,
                  $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
                )
            ],
            AC_MSG_WARN([XVideo extension not found !!])
        )

      ]
    ) dnl *** End of X11/Xlib.h check

    dnl Check for the presence of OpenGL
    if test $OPENGL = "yes" -o $OPENGL = "normal"
    then
	AC_CHECK_HEADERS(GL/gl.h GL/glx.h GL/glext.h)
	if test "$ac_cv_header_GL_gl_h" = "yes" -a "$ac_cv_header_GL_glx_h" = "yes"
	then
	    dnl Check for some problems due to old Mesa versions
	    AC_CACHE_CHECK("for up-to-date OpenGL version", wine_cv_opengl_version_OK,
	      AC_TRY_COMPILE(
		[#include <GL/gl.h>],
		[GLenum test = GL_UNSIGNED_SHORT_5_6_5;],
		[wine_cv_opengl_version_OK="yes"],
		[wine_cv_opengl_version_OK="no"]
	      )
            )

	    dnl Check for the thread-safety of the OpenGL library
	    AC_CACHE_CHECK("for thread-safe OpenGL version", 
			   wine_cv_opengl_version_threadsafe,
              [saved_libs=$LIBS
	       LIBS="$X_LIBS -lGL"
	       AC_TRY_LINK([],[pthread_getspecific();],
			      [wine_cv_opengl_version_threadsafe="yes"],
			      [wine_cv_opengl_version_threadsafe="no"])
	       LIBS=$saved_libs]
	    )

	    if test "$wine_cv_opengl_version_OK" = "yes" -a \( "$wine_cv_opengl_version_threadsafe" = "no" -o $OPENGL = "yes" \)
            then
		dnl Check for the presence of the library
		AC_CHECK_LIB(GL,glXCreateContext,
			     X_PRE_LIBS="$X_PRE_LIBS -lGL"
			     ,,
			     $X_LIBS -lXext -lX11 -lm $X_EXTRA_LIBS)

		if test $ac_cv_lib_GL_glXCreateContext = "yes"
		then

			OPENGLFILES='$(OPENGLFILES)'
			AC_DEFINE(HAVE_OPENGL)

			AC_CHECK_LIB(GL,glXGetProcAddressARB,AC_DEFINE(HAVE_GLX_GETPROCADDRESS),,$X_LIBS -lXext -lX11 -lm $X_EXTRA_LIBS)

			if test $ac_cv_lib_GL_glXGetProcAddressARB = "yes"
			then
			       AC_CACHE_CHECK("for OpenGL extension functions prototypes", wine_cv_extension_prototypes,
			          AC_TRY_COMPILE([#include <GL/gl.h>
				  		  #ifdef HAVE_GL_GLEXT_H
						  # include <GL/glext.h>
						  #endif
						  ],
						 [PFNGLCOLORTABLEEXTPROC test_proc;],
						 [wine_cv_extension_prototypes="yes"],
						 [wine_cv_extension_prototypes="no"]
				  )
				)
				if test $wine_cv_extension_prototypes = "yes"
				then
					AC_DEFINE(HAVE_GLEXT_PROTOTYPES)
				fi

				OPENGL32_DLL=opengl32
			fi

                        AC_CHECK_HEADERS(GL/osmesa.h,
                            [ dnl *** If GL/osmesa.h exists...
                                AC_CHECK_LIB(GL, OSMesaCreateContext,
                                  AC_DEFINE(HAVE_OSMESA),
                                  AC_CHECK_LIB(OSMesa, OSMesaCreateContext,
                                  [ AC_DEFINE(HAVE_OSMESA)
                                    X_PRE_LIBS="$X_PRE_LIBS -lOSMesa"
                                  ]),
                                  $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
                                )
                            ],
                            AC_MSG_WARN([OSMesa not found!!])
                        )
		fi
	     fi
	 fi
    fi

    CPPFLAGS="$ac_save_CPPFLAGS"
    X_DLLS='$(X_DLLS)'
    XFILES='$(XFILES)'
else
    XLIB=""
    X_CFLAGS=""
    X_LIBS=""
fi

dnl **** Check which curses lib to use ***
if test "$CURSES" = "yes"
then
    AC_CHECK_HEADERS(ncurses.h)
    if test "$ac_cv_header_ncurses_h" = "yes"
    then 
        AC_CHECK_LIB(ncurses,waddch)
    fi
    if test "$ac_cv_lib_ncurses_waddch" = "yes"
    then
        AC_CHECK_LIB(ncurses,resizeterm,AC_DEFINE(HAVE_RESIZETERM))
        AC_CHECK_LIB(ncurses,getbkgd,AC_DEFINE(HAVE_GETBKGD))
    else
        AC_CHECK_HEADERS(curses.h)
        if test "$ac_cv_header_curses_h" = "yes"
        then    
            AC_CHECK_LIB(curses,waddch)
            if test "$ac_cv_lib_curses_waddch" = "yes"
            then
                AC_CHECK_LIB(curses,resizeterm,AC_DEFINE(HAVE_RESIZETERM))
                AC_CHECK_LIB(curses,getbkgd,AC_DEFINE(HAVE_GETBKGD))
            fi
        fi
    fi
fi

dnl **** Check for IPX (currently Linux only) ****
AC_CACHE_CHECK("for GNU style IPX support", ac_cv_c_ipx_gnu,
 AC_TRY_COMPILE(
   [#include <sys/socket.h>
    #include <netipx/ipx.h>],
   [((struct sockaddr_ipx *)0)->sipx_family == AF_IPX],
   [ac_cv_c_ipx_gnu="yes"],
   [ac_cv_c_ipx_gnu="no"])
 )
if test "$ac_cv_c_ipx_gnu" = "yes"
then
    AC_DEFINE(HAVE_IPX_GNU)
fi

if test "$ac_cv_c_ipx_gnu" = "no"
then
 AC_CACHE_CHECK("for linux style IPX support", ac_cv_c_ipx_linux,
  AC_TRY_COMPILE(
    [#include <sys/socket.h>
     #include <asm/types.h>
     #include <linux/ipx.h>],
    [((struct sockaddr_ipx *)0)->sipx_family == AF_IPX],
    [ac_cv_c_ipx_linux="yes"],
    [ac_cv_c_ipx_linux="no"])
  )
  if test "$ac_cv_c_ipx_linux" = "yes"
  then
      AC_DEFINE(HAVE_IPX_LINUX)
  fi
fi

dnl **** Check for Open Sound System ****
AC_CHECK_HEADERS(sys/soundcard.h machine/soundcard.h soundcard.h, break)

AC_CACHE_CHECK("for Open Sound System",
	ac_cv_c_opensoundsystem,
	AC_TRY_COMPILE([
	#if defined(HAVE_SYS_SOUNDCARD_H)
		#include <sys/soundcard.h>
	#elif defined(HAVE_MACHINE_SOUNDCARD_H)
		#include <machine/soundcard.h>
	#elif defined(HAVE_SOUNDCARD_H)
		#include <soundcard.h>
	#endif
	],[

/* check for one of the Open Sound System specific SNDCTL_ defines */
#if !defined(SNDCTL_DSP_STEREO)
#error No open sound system
#endif
],ac_cv_c_opensoundsystem="yes",ac_cv_c_opensoundsystem="no"))

if test "$ac_cv_c_opensoundsystem" = "yes"
then
    AC_DEFINE(HAVE_OSS)
fi

AC_CACHE_CHECK("for Open Sound System/MIDI interface",
	ac_cv_c_opensoundsystem_midi,
	AC_TRY_COMPILE([
	#if defined(HAVE_SYS_SOUNDCARD_H)
		#include <sys/soundcard.h>
	#elif defined(HAVE_MACHINE_SOUNDCARD_H)
		#include <machine/soundcard.h>
	#elif defined(HAVE_SOUNDCARD_H)
		#include <soundcard.h>
	#endif
	],[

/* check for one of the Open Sound System specific SNDCTL_SEQ defines */
#if !defined(SNDCTL_SEQ_SYNC)
#error No open sound system MIDI interface
#endif
],ac_cv_c_opensoundsystem_midi="yes",ac_cv_c_opensoundsystem_midi="no"))

if test "$ac_cv_c_opensoundsystem_midi" = "yes"
then
    AC_DEFINE(HAVE_OSS_MIDI)
fi

dnl **** If ln -s doesn't work, use cp instead ****
if test "$ac_cv_prog_LN_S" = "ln -s"; then : ; else LN_S=cp ; fi

dnl **** Check for gcc strength-reduce bug ****

if test "x${GCC}" = "xyes"
then
  CFLAGS="$CFLAGS -Wall"
  AC_CACHE_CHECK( "for gcc strength-reduce bug", ac_cv_c_gcc_strength_bug,
                  AC_TRY_RUN([
int	L[[4]] = {0,1,2,3};
int main(void) {
  static int Array[[3]];
  unsigned int B = 3;
  int i;
  for(i=0; i<B; i++) Array[[i]] = i - 3;
  for(i=0; i<4 - 1; i++) L[[i]] = L[[i + 1]];
  L[[i]] = 4;
  
  exit( Array[[1]] != -2 || L[[2]] != 3);
}],
    ac_cv_c_gcc_strength_bug="no",
    ac_cv_c_gcc_strength_bug="yes",
    ac_cv_c_gcc_strength_bug="yes") )
  if test "$ac_cv_c_gcc_strength_bug" = "yes"
  then
    CFLAGS="$CFLAGS -fno-strength-reduce"
  fi

  dnl Check for -mpreferred-stack-boundary
  AC_CACHE_CHECK("for gcc -mpreferred-stack-boundary=2 support",
                 ac_cv_c_gcc_stack_boundary,
  [saved_cflags=$CFLAGS
  CFLAGS="$CFLAGS -mpreferred-stack-boundary=2"
  AC_TRY_COMPILE(,[return 0],ac_cv_c_gcc_stack_boundary="yes",ac_cv_c_gcc_stack_boundary="no")
  CFLAGS=$saved_cflags
  ])
  if test "$ac_cv_c_gcc_stack_boundary" = "yes"
  then
    CFLAGS="$CFLAGS -mpreferred-stack-boundary=2"
  fi
fi

dnl **** Check if we need to place .type inside a .def directive ****

AC_CACHE_CHECK("whether .type must sit inside a .def directive",
	       ac_cv_c_type_in_def,
[saved_libs=$LIBS
LIBS="conftest_asm.s $LIBS"
cat > conftest_asm.s <<EOF
	.globl _ac_test
	.def _ac_test; .scl 2; .type 32; .endef
_ac_test:
	.long 0
EOF
AC_TRY_LINK(,,ac_cv_c_type_in_def="yes",ac_cv_c_type_in_def="no")
LIBS=$saved_libs])
if test "$ac_cv_c_type_in_def" = "yes"
then
  AC_DEFINE(NEED_TYPE_IN_DEF)
fi
 
dnl **** Check for underscore on external symbols ****

AC_CACHE_CHECK("whether external symbols need an underscore prefix",
               ac_cv_c_extern_prefix,
[saved_libs=$LIBS
LIBS="conftest_asm.s $LIBS"
cat > conftest_asm.s <<EOF
	.globl _ac_test
_ac_test:
	.long 0
EOF
AC_TRY_LINK([extern int ac_test;],[if (ac_test) return 1],
            ac_cv_c_extern_prefix="yes",ac_cv_c_extern_prefix="no")
LIBS=$saved_libs])
if test "$ac_cv_c_extern_prefix" = "yes"
then
  AC_DEFINE(NEED_UNDERSCORE_PREFIX)
fi

dnl **** Check for .string in assembler ****

AC_CACHE_CHECK("whether assembler accepts .string",
               ac_cv_c_asm_string,
[saved_libs=$LIBS
LIBS="conftest_asm.s $LIBS"
cat > conftest_asm.s <<EOF
	.string "test"
EOF
AC_TRY_LINK(,,ac_cv_c_asm_string="yes",ac_cv_c_asm_string="no")
LIBS=$saved_libs])
if test "$ac_cv_c_asm_string" = "yes"
then
  AC_DEFINE(HAVE_ASM_STRING)
fi

dnl **** Check for working dll ****

LDSHARED=""
LDDLLFLAGS=""
if test "$LIBEXT" = "so"
then
  AC_CACHE_CHECK("whether we can build a Linux dll",
                 ac_cv_c_dll_linux,
  [saved_cflags=$CFLAGS
  CFLAGS="$CFLAGS -fPIC -shared -Wl,-soname,conftest.so.1.0,-Bsymbolic"
  AC_TRY_LINK(,[return 1],ac_cv_c_dll_linux="yes",ac_cv_c_dll_linux="no")
  CFLAGS=$saved_cflags
  ])
  if test "$ac_cv_c_dll_linux" = "yes"
  then
    LDSHARED="\$(CC) -shared \$(SONAME:%=-Wl,-soname,%) -Wl,-rpath,\$(libdir)"
    LDDLLFLAGS="-Wl,-Bsymbolic"
  else
    AC_CACHE_CHECK(whether we can build a UnixWare (Solaris) dll,
                 ac_cv_c_dll_unixware,
    [saved_cflags=$CFLAGS
    CFLAGS="$CFLAGS -fPIC -Wl,-G,-h,conftest.so.1.0,-B,symbolic"
    AC_TRY_LINK(,[return 1],ac_cv_c_dll_unixware="yes",ac_cv_c_dll_unixware="no")
    CFLAGS=$saved_cflags
    ])
    if test "$ac_cv_c_dll_unixware" = "yes"
    then
      LDSHARED="\$(CC) -Wl,-G \$(SONAME:%=-Wl,-h,\$(libdir)/%)"
      LDDLLFLAGS="-Wl,-B,symbolic"
    else
      AC_CACHE_CHECK("whether we can build a NetBSD dll",
                   ac_cv_c_dll_netbsd,
      [saved_cflags=$CFLAGS
      CFLAGS="$CFLAGS -fPIC -Wl,-Bshareable,-Bforcearchive"
      AC_TRY_LINK(,[return 1],ac_cv_c_dll_netbsd="yes",ac_cv_c_dll_netbsd="no")
      CFLAGS=$saved_cflags
      ])
      if test "$ac_cv_c_dll_netbsd" = "yes"
      then
        LDSHARED="\$(CC) -Wl,-Bshareable,-Bforcearchive"
        LDDLLFLAGS="" #FIXME
      fi
    fi
  fi
  if test "$ac_cv_c_dll_linux" = "no" -a "$ac_cv_c_dll_unixware" = "no" -a "$ac_cv_c_dll_netbsd" = "no"
  then
    LIBEXT="a"
    if test "$DLLWRAP" = "dllwrap"; then
      dnl FIXME - check whether dllwrap works correctly...
      if test "$CYGWIN" = "yes"; then
        echo "*** use dllwrap for building shared library."
        LIBEXT="dll"
      fi
    fi
  fi
fi

if test "$LIBEXT" = "a"; then
  echo "*** It is currently not possible to build WINE without shared"
  echo "*** library (.so) support to allow transparent switch between .so"
  echo "*** and .dll files."
  echo "*** If you are using Linux, you will need a newer binutils."
  exit 1
fi

DLLFLAGS=""
LDPATH=""

if test "$LIBEXT" = "so"; then
    DLLFLAGS="-fPIC"
    DLL_LINK="-L\$(DLLDIR) \$(IMPORTS:%=-l%) \$(LIBWINE) \$(LIBUNICODE)"
    LDPATH="LD_LIBRARY_PATH=\"\$(TOPOBJDIR)/unicode:\$\$LD_LIBRARY_PATH\""
elif test "$LIBEXT" = "dll"; then
    #DLLFLAGS="-fPIC" # -fPIC doesn't work(at least in cygwin-b20) - FIXME
    DLL_LINK="-L\$(DLLDIR) \$(IMPORTS:%=-l%) \$(LIBWINE) \$(LIBUNICODE)"
    LDPATH="PATH=\"\$(TOPOBJDIR)/unicode:\$\$PATH\""
else
    DLL_LINK="-L\$(DLLDIR) \$(DLLS:%=-l%) \$(LIBWINE) \$(LIBUNICODE) \$(X_LIBS) \$(XLIB)"
    AC_CACHE_CHECK([whether the linker supports --[[no]]-whole-archive (Linux)],
 	           ac_cv_c_whole_archive,
            [saved_cflags=$CFLAGS
            CFLAGS="$CFLAGS -Wl,--whole-archive -Wl,--no-whole-archive"
            AC_TRY_LINK(,[return 1],ac_cv_c_whole_archive="yes",ac_cv_c_whole_archive="no")
            CFLAGS=$saved_cflags
            ])
    if test "$ac_cv_c_whole_archive" = "yes"
    then
        DLL_LINK="-Wl,--whole-archive $DLL_LINK -Wl,--no-whole-archive"
    else
        AC_CACHE_CHECK([whether the linker supports -z {all,default}extract (Linux)],
                       ac_cv_c_allextract,
		[saved_cflags=$CFLAGS
		CFLAGS="$CFLAGS -Wl,-z,allextract -Wl,-z,defaultextract"
		AC_TRY_LINK(,[return 1],ac_cv_c_allextract="yes",ac_cv_c_allextract="no")
		CFLAGS=$saved_cflags
		])
        if test "$ac_cv_c_allextract" = "yes"
        then
            DLL_LINK="-Wl,-z,allextract $DLL_LINK -Wl,-z,defaultextract"
        fi
    fi
fi

AC_SUBST(DLL_LINK)
AC_SUBST(DLLFLAGS)
AC_SUBST(LDSHARED)
AC_SUBST(LDDLLFLAGS)
AC_SUBST(LIBEXT)
AC_SUBST(LDPATH)

dnl **** Check for reentrant libc ****
dnl
dnl For cross-compiling we blindly assume that libc is reentrant. This is
dnl ok since non-reentrant libc is quite rare (mostly old libc5 versions).

AC_DEFUN(WINE_CHECK_ERRNO,
[
  AC_CACHE_CHECK(for reentrant libc: $1, wine_cv_libc_r_$1,
  [AC_TRY_RUN([int myerrno = 0;
char buf[256];
int *$1(){return &myerrno;}
main(){connect(0,buf,255); exit(!myerrno);}],
  wine_cv_libc_r_$1=yes, wine_cv_libc_r_$1=no,
  wine_cv_libc_r_$1=yes )
])
if test "$wine_cv_libc_r_$1" = "yes"
then
    wine_cv_libc_reentrant=$1 
fi
])

wine_cv_libc_reentrant=no 
dnl Linux style errno location
WINE_CHECK_ERRNO(__errno_location)
dnl FreeBSD style errno location
WINE_CHECK_ERRNO(__error)
dnl Solaris style errno location
WINE_CHECK_ERRNO(___errno)
dnl UnixWare style errno location
WINE_CHECK_ERRNO(__thr_errno)

if test "$wine_cv_libc_reentrant" != "no" 
then
  AC_DEFINE_UNQUOTED(ERRNO_LOCATION,$wine_cv_libc_reentrant)
fi

dnl **** Check for reentrant X libraries ****
dnl
dnl This may fail to determine whether X libraries are reentrant if
dnl AC_PATH_XTRA does not set x_libraries. In this case manual configuration
dnl is possible with the --without-reentrant-x option.

if test "$have_x" = "yes" -a "$wine_cv_libc_reentrant" != "no"
then
AC_CACHE_CHECK( "for reentrant X libraries", wine_cv_x_reentrant,
  [ if test "x$with_reentrant_x" = "xno" 
    then
        wine_cv_x_reentrant=no
    else
	libX11_check=none
	for dir in "$x_libraries" /usr/lib /usr/local/lib /lib; do
	    if test -r $dir/libX11.so; then
		libX11_check="-D $dir/libX11.so"
		break 1
	    fi
	    if test -r $dir/libX11.a; then
		libX11_check="$dir/libX11.a"
		break 1
	    fi
	done
	if test "$libX11_check" != "none"; then
	    if nm $libX11_check | grep $wine_cv_libc_reentrant >/dev/null 2>&1
	    then
		wine_cv_x_reentrant=yes
	    else
		wine_cv_x_reentrant=no
	    fi
	else
	    wine_cv_x_reentrant=unknown
	fi
    fi ] )
else
    wine_cv_x_reentrant=no
fi
if test "$wine_cv_x_reentrant" = "no"
then
  AC_DEFINE(NO_REENTRANT_X11)
fi


dnl **** Check for functions ****

AC_FUNC_ALLOCA()
AC_CHECK_FUNCS(\
	__libc_fork \
	_lwp_create \
	clone \
	ecvt \
	finite \
	fpclass \
	getnetbyaddr \
	getnetbyname \
	getpagesize \
	getprotobyname \
	getprotobynumber \
	getrlimit \
	getservbyport \
	getsockopt \
	inet_network \
	lstat \
	memmove \
	mmap \
	rfork \
	select \
	sendmsg \
	settimeofday \
	sigaltstack \
	statfs \
	strcasecmp \
	strerror \
	strncasecmp \
	tcgetattr \
	timegm \
	usleep \
	vfscanf \
	wait4 \
	waitpid \
)

dnl **** Check for header files ****

AC_CHECK_HEADERS(\
	arpa/inet.h \
	arpa/nameser.h \
	elf.h \
	float.h \
	ieeefp.h \
	libio.h \
	libutil.h \
	link.h \
	linux/cdrom.h \
	linux/input.h \
	linux/joystick.h \
	linux/ucdrom.h \
	net/if.h \
	netdb.h \
	netinet/in.h \
	netinet/in_systm.h \
	netinet/ip.h \
	netinet/tcp.h \
	pty.h \
	resolv.h \
	sched.h \
	socket.h \
	strings.h \
	sys/cdio.h \
	sys/errno.h \
	sys/file.h \
	sys/filio.h \
	sys/ipc.h \
	sys/lwp.h \
	sys/mman.h \
	sys/modem.h \
	sys/mount.h \
	sys/msg.h \
	sys/param.h \
	sys/ptrace.h \
	sys/reg.h \
	sys/signal.h \
	sys/shm.h \
	sys/socket.h \
	sys/sockio.h \
	sys/statfs.h \
	sys/strtio.h \
	sys/syscall.h \
	sys/user.h \
	sys/wait.h \
	sys/v86.h \
	sys/v86intr.h \
	sys/vfs.h \
	sys/vm86.h \
	syscall.h \
	ucontext.h \
)
AC_HEADER_STAT()

dnl **** Check for types ****

AC_C_CONST()
AC_C_INLINE()
AC_TYPE_SIZE_T()
AC_CHECK_SIZEOF(long long,0)

AC_CACHE_CHECK("whether linux/input.h is for real",
	wine_cv_linux_input_h,
	AC_TRY_COMPILE([
	    #include <linux/input.h>
	] , [
	    int foo = EVIOCGBIT(EV_ABS,42);
	    int bar = BTN_PINKIE;
	    int fortytwo = 42;
	],
	wine_cv_linux_input_h=yes,
	wine_cv_linux_input_h=no,
	no
	)
    )
    if test "$wine_cv_linux_input_h" = "yes"
    then
        AC_DEFINE(HAVE_CORRECT_LINUXINPUT_H)
    fi

   
AC_CACHE_CHECK("whether we can use re-entrant gethostbyname_r Linux style",
   	wine_cv_linux_gethostbyname_r_6,
	AC_TRY_COMPILE([
#include <netdb.h>
	], [
    char *name=NULL;
    struct hostent he;
    struct hostent *result;
    char *buf=NULL;
    int bufsize=0;
    int res,errnr;
    char *addr=NULL;
    int addrlen=0;
    int addrtype=0;
    res=gethostbyname_r(name,&he,buf,bufsize,&result,&errnr);
    res=gethostbyaddr_r(addr, addrlen, addrtype,&he,buf,bufsize,&result,&errnr);
    ],
	wine_cv_linux_gethostbyname_r_6=yes,
	wine_cv_linux_gethostbyname_r_6=no
	)
   )
   if test "$wine_cv_linux_gethostbyname_r_6" = "yes"
   then
      AC_DEFINE(HAVE_LINUX_GETHOSTBYNAME_R_6)
   fi

if test "$ac_cv_header_linux_joystick_h" = "yes"
then
   AC_CACHE_CHECK("whether linux/joystick.h uses the Linux 2.2+ API",
   	wine_cv_linux_joystick_22_api,
	AC_TRY_COMPILE([
	#include <sys/ioctl.h>
	#include <linux/joystick.h>

	struct js_event blub;
	#if !defined(JS_EVENT_AXIS) || !defined(JS_EVENT_BUTTON)
	#error "no 2.2 header"
	#endif
	],/*empty*/,
	wine_cv_linux_joystick_22_api=yes,
	wine_cv_linux_joystick_22_api=no,
	wine_cv_linux_joystick_22_api=no
	)
   )
   if test "$wine_cv_linux_joystick_22_api" = "yes"
   then
      AC_DEFINE(HAVE_LINUX_22_JOYSTICK_API)
   fi
fi

dnl **** statfs checks ****

if test "$ac_cv_header_sys_vfs_h" = "yes"
then
    AC_CACHE_CHECK( "whether sys/vfs.h defines statfs",
		    wine_cv_sys_vfs_has_statfs,
	AC_TRY_COMPILE([
	#include <sys/types.h>
	#ifdef HAVE_SYS_PARAM_H
	# include <sys/param.h>
	#endif
	#include <sys/vfs.h>
	],[
		struct statfs stfs;

		memset(&stfs,0,sizeof(stfs));
	],wine_cv_sys_vfs_has_statfs=yes,wine_cv_sys_vfs_has_statfs=no
	)
    )
    if test "$wine_cv_sys_vfs_has_statfs" = "yes"
    then
      AC_DEFINE(STATFS_DEFINED_BY_SYS_VFS)
    fi
fi

if test "$ac_cv_header_sys_statfs_h" = "yes"
then
    AC_CACHE_CHECK( "whether sys/statfs.h defines statfs",
		    wine_cv_sys_statfs_has_statfs,
	AC_TRY_COMPILE([
	#include <sys/types.h>
	#ifdef HAVE_SYS_PARAM_H
	# include <sys/param.h>
	#endif
	#include <sys/statfs.h>
	],[
		struct statfs stfs;
	],wine_cv_sys_statfs_has_statfs=yes,wine_cv_sys_statfs_has_statfs=no
	)
    )
    if test "$wine_cv_sys_statfs_has_statfs" = "yes"
    then
      AC_DEFINE(STATFS_DEFINED_BY_SYS_STATFS)
    fi
fi

if test "$ac_cv_header_sys_mount_h" = "yes"
then
    AC_CACHE_CHECK( "whether sys/mount.h defines statfs",
		    wine_cv_sys_mount_has_statfs,
	AC_TRY_COMPILE([
	#include <sys/types.h>
	#ifdef HAVE_SYS_PARAM_H
	# include <sys/param.h>
	#endif
	#include <sys/mount.h>
	],[
		struct statfs stfs;
	],wine_cv_sys_mount_has_statfs=yes,wine_cv_sys_mount_has_statfs=no
	)
    )
    if test "$wine_cv_sys_mount_has_statfs" = "yes"
    then
      AC_DEFINE(STATFS_DEFINED_BY_SYS_MOUNT)
    fi
fi

dnl **** FIXME: what about mixed cases, where we need two of them? ***

AC_CACHE_CHECK( "for statfs.f_bfree", wine_cv_statfs_bfree,
  [ if test "x$statfs_bfree" = "xno"
    then
        wine_cv_statfs_bfree=no
    else
    	AC_TRY_COMPILE([
	#include <sys/types.h>
	#ifdef HAVE_SYS_PARAM_H
	# include <sys/param.h>
	#endif
	#ifdef STATFS_DEFINED_BY_SYS_MOUNT
	# include <sys/mount.h>
	#else
	# ifdef STATFS_DEFINED_BY_SYS_VFS
	#  include <sys/vfs.h>
	# else
	#  ifdef STATFS_DEFINED_BY_SYS_STATFS
	#   include <sys/statfs.h>
	#  endif
	# endif
	#endif
	],[
		struct statfs stfs;

		stfs.f_bfree++;
	],wine_cv_statfs_bfree=yes,wine_cv_statfs_bfree=no
	)
    fi ] )
if test "$wine_cv_statfs_bfree" = "yes"
then
  AC_DEFINE(STATFS_HAS_BFREE)
fi

AC_CACHE_CHECK( "for statfs.f_bavail", wine_cv_statfs_bavail,
  [ if test "x$statfs_bavail" = "xno"
    then
        wine_cv_statfs_bavail=no
    else
    	AC_TRY_COMPILE([
	#include <sys/types.h>
	#ifdef HAVE_SYS_PARAM_H
	# include <sys/param.h>
	#endif
	#ifdef STATFS_DEFINED_BY_SYS_MOUNT
	# include <sys/mount.h>
	#else
	# ifdef STATFS_DEFINED_BY_SYS_VFS
	#  include <sys/vfs.h>
	# else
	#  ifdef STATFS_DEFINED_BY_SYS_STATFS
	#   include <sys/statfs.h>
	#  endif
	# endif
	#endif
	],[
		struct statfs stfs;

		stfs.f_bavail++;
	],wine_cv_statfs_bavail=yes,wine_cv_statfs_bavail=no
	)
    fi ] )
if test "$wine_cv_statfs_bavail" = "yes"
then
  AC_DEFINE(STATFS_HAS_BAVAIL)
fi

dnl *** check for file descriptor passing with msg_accrights

AC_CACHE_CHECK("for msg_accrights in struct msghdr", ac_cv_c_msg_accrights,
 AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>],[struct msghdr hdr; hdr.msg_accrights=0],
                ac_cv_c_msg_accrights="yes", ac_cv_c_msg_accrights="no"))
if test "$ac_cv_c_msg_accrights" = "yes"
then
    AC_DEFINE(HAVE_MSGHDR_ACCRIGHTS)
fi

dnl *** Check for the sun_len member in struct sockaddr_un

AC_CACHE_CHECK("for sun_len in struct sockaddr_un", ac_cv_c_sun_len,
 AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>], [static struct sockaddr_un addr; addr.sun_len = 1],
                ac_cv_c_sun_len="yes", ac_cv_c_sun_len="no"))
if test "$ac_cv_c_sun_len" = "yes"
then
    AC_DEFINE(HAVE_SOCKADDR_SUN_LEN)
fi

dnl *** check for the need to define __i386__

AC_CACHE_CHECK("whether we need to define __i386__",ac_cv_cpp_def_i386,
 AC_EGREP_CPP(yes,[#if (defined(i386) || defined(__i386)) && !defined(__i386__)
yes
#endif],
 ac_cv_cpp_def_i386="yes", ac_cv_cpp_def_i386="no"))
if test "$ac_cv_cpp_def_i386" = "yes"
then
    CFLAGS="$CFLAGS -D__i386__"
    LINTFLAGS="$LINTFLAGS -D__i386__"
fi

dnl $GCC is set by autoconf
GCC_NO_BUILTIN=""
if test "$GCC" = "yes"
then
    GCC_NO_BUILTIN="-fno-builtin"
fi
AC_SUBST(GCC_NO_BUILTIN)

dnl **** Generate output files ****

AC_OUTPUT_COMMANDS([
extra_subdirs="\
dlls/ddraw/d3ddevice \
dlls/ddraw/dclipper \
dlls/ddraw/ddraw \
dlls/ddraw/direct3d \
dlls/ddraw/dpalette \
dlls/ddraw/dsurface \
dlls/dinput/joystick \
dlls/dinput/keyboard \
dlls/dinput/mouse \
dlls/kernel/messages \
dlls/user/resources \
"
for i in $extra_subdirs; do [ -d $i ] || (echo "creating $i" && mkdir $i); done ])

MAKE_RULES=Make.rules
AC_SUBST_FILE(MAKE_RULES)

MAKE_DLL_RULES=dlls/Makedll.rules
AC_SUBST_FILE(MAKE_DLL_RULES)

MAKE_PROG_RULES=programs/Makeprog.rules
AC_SUBST_FILE(MAKE_PROG_RULES)

AC_OUTPUT([
Make.rules
dlls/Makedll.rules
programs/Makeprog.rules
Makefile
console/Makefile
controls/Makefile
debugger/Makefile
dlls/Makefile
dlls/advapi32/Makefile
dlls/avifil32/Makefile
dlls/comctl32/Makefile
dlls/commdlg/Makefile
dlls/crtdll/Makefile
dlls/dciman32/Makefile
dlls/ddraw/Makefile
dlls/dinput/Makefile
dlls/dplay/Makefile
dlls/dplayx/Makefile
dlls/dsound/Makefile
dlls/gdi/Makefile
dlls/icmp/Makefile
dlls/imagehlp/Makefile
dlls/imm32/Makefile
dlls/kernel/Makefile
dlls/lzexpand/Makefile
dlls/mpr/Makefile
dlls/msacm/Makefile
dlls/msnet32/Makefile
dlls/msvcrt/Makefile
dlls/msvideo/Makefile
dlls/ntdll/Makefile
dlls/odbc32/Makefile
dlls/ole32/Makefile
dlls/oleaut32/Makefile
dlls/olecli/Makefile
dlls/oledlg/Makefile
dlls/olepro32/Makefile
dlls/olesvr/Makefile
dlls/opengl32/Makefile
dlls/psapi/Makefile
dlls/rasapi32/Makefile
dlls/richedit/Makefile
dlls/rpcrt4/Makefile
dlls/serialui/Makefile
dlls/setupapi/Makefile
dlls/shdocvw/Makefile
dlls/shell32/Makefile
dlls/shfolder/Makefile
dlls/shlwapi/Makefile
dlls/tapi32/Makefile
dlls/ttydrv/Makefile
dlls/urlmon/Makefile
dlls/user/Makefile
dlls/version/Makefile
dlls/win32s/Makefile
dlls/winaspi/Makefile
dlls/winedos/Makefile
dlls/wineps/Makefile
dlls/wininet/Makefile
dlls/winmm/Makefile
dlls/winmm/joystick/Makefile
dlls/winmm/mcianim/Makefile
dlls/winmm/mciavi/Makefile
dlls/winmm/mcicda/Makefile
dlls/winmm/mciseq/Makefile
dlls/winmm/mciwave/Makefile
dlls/winmm/midimap/Makefile
dlls/winmm/wavemap/Makefile
dlls/winmm/wineoss/Makefile
dlls/winnls/Makefile
dlls/winsock/Makefile
dlls/winspool/Makefile
dlls/wow32/Makefile
dlls/wsock32/Makefile
dlls/x11drv/Makefile
documentation/Makefile
documentation/wine.conf.man
documentation/wine.man
files/Makefile
graphics/Makefile
graphics/enhmetafiledrv/Makefile
graphics/metafiledrv/Makefile
graphics/win16drv/Makefile
graphics/x11drv/Makefile
if1632/Makefile
include/Makefile
library/Makefile
libtest/Makefile
loader/Makefile
loader/dos/Makefile
loader/ne/Makefile
memory/Makefile
misc/Makefile
miscemu/Makefile
msdos/Makefile
objects/Makefile
ole/Makefile
programs/Makefile
programs/avitools/Makefile
programs/clock/Makefile
programs/cmdlgtst/Makefile
programs/control/Makefile
programs/notepad/Makefile
programs/osversioncheck/Makefile
programs/progman/Makefile
programs/regapi/Makefile
programs/regtest/Makefile
programs/uninstaller/Makefile
programs/view/Makefile
programs/wcmd/Makefile
programs/winemine/Makefile
programs/winhelp/Makefile
programs/winver/Makefile
relay32/Makefile
scheduler/Makefile
server/Makefile
tools/Makefile
tools/cvdump/Makefile
tools/specmaker/Makefile
tools/winebuild/Makefile
tools/winelauncher
tools/wmc/Makefile
tools/wrc/Makefile
tsx11/Makefile
unicode/Makefile
win32/Makefile
windows/Makefile
windows/x11drv/Makefile ])

if test "$have_x" = "no"
then
  echo
  echo "*** Warning: X development files not found. Wine will be built without"
  echo "*** X support, which currently does not work, and would probably not be"
  echo "*** what you want anyway. You will need to install devel packages of"
  echo "*** Xlib/Xfree86 and Xpm at the very least."
elif test "$ac_cv_lib_Xpm_XpmCreatePixmapFromData" = "no"
then
  echo
  echo "*** Warning: Xpm development files not found. Wine will be built without"
  echo "*** Xpm support, which currently does not work. You will need to install"
  echo "*** devel packages of Xpm."
fi

if test "$ac_cv_lib_ncurses_resizeterm" = "no" -a "$ac_cv_lib_ncurses_waddch" = "yes"
then
  echo
  echo "*** Warning: resizeterm not found in ncurses. Wine will be built without"
  echo "*** terminal resize support. Consider upgrading ncurses."
fi

if test "$wine_cv_libc_reentrant" = "no" 
then
  echo
  echo "*** Warning: non-reentrant libc detected. Wine will be build without"
  echo "*** thread support. Consider upgrading libc to a more recent"
  echo "*** reentrant version of libc."
fi

if test "$wine_cv_opengl_version_OK" = "no"
then
  echo
  echo "*** Warning: old Mesa headers detected. Wine will be built without Direct3D"
  echo "*** support. Consider upgrading your Mesa libraries (http://www.mesa3d.org/)."
fi

if test "$wine_cv_opengl_version_threadsafe" = "yes" -a $OPENGL = "normal"
then
  echo
  echo "*** Warning: the OpenGL version you have installed relies on libpthread for"
  echo "*** thread-safety. To prevent crashes, OpenGL support has been removed."
  echo "*** A fix for glibc 2.1.3 that seems to work is included in this version of Wine,"
  echo "*** start configure with '--enable-opengl' to force OpenGL support."
fi

if test "$wine_cv_opengl_version_threadsafe" = "yes" -a $OPENGL = "yes"
then
  echo
  echo "*** Warning: you explicitly linked in a thread-safe OpenGL version. If you"
  echo "*** experience unusual crashes on DirectDraw games, try first to disable OpenGL"
  echo "*** support before reporting bugs."
fi


echo
echo "Configure finished.  Do 'make depend && make' to compile Wine."
echo

dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\\bdnl\\b\\s *"
dnl compile-command: "autoconf"
dnl End: