dnl Process this file with autoconf to produce a configure script.
dnl
dnl The basis for this file was generated by autoscan(1) [pere 1998-03-19]
dnl
AC_INIT(Simulator/Aircraft/aircraft.c)

dnl Initialize the automake stuff
AM_INIT_AUTOMAKE(FlightGear, 0.43)

dnl Checks for programs.

AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_LN_S
dnl Initialize libtool
AM_PROG_LIBTOOL

dnl Initialize maintainer mode
AM_MAINTAINER_MODE

dnl Check to see if this `configure' is being run in the `Cygwin32' environment
AM_CYGWIN32

dnl extra library and include directories
if test "x$am_cv_cygwin32" = "xyes" ; then
    wi_EXTRA_DIRS(no, /store /usr/local /local /user/local /usr/share \
	/usr/X11R6 /opt/X11R6 `pwd`/Win32)
else
    wi_EXTRA_DIRS(no, /store /usr/local /local /user/local /usr/share \
	/usr/X11R6 /opt/X11R6)
fi

dnl Check for X11 (fancy)
AC_PATH_XTRA

dnl Checks for libraries.

AC_CHECK_LIB(m, cos)
AC_CHECK_LIB(socket, socket)
AC_CHECK_LIB(X11, XCreateWindow)
AC_CHECK_LIB(Xext, XShmCreateImage)
AC_CHECK_LIB(Xi, XGetExtensionVersion)
AC_CHECK_LIB(ICE, IceOpenConnection)
AC_CHECK_LIB(SM, SmcOpenConnection)
AC_CHECK_LIB(Xt, XtMalloc)
AC_CHECK_LIB(Xmu, XmuLookupStandardColormap)

AC_CHECK_LIB(GLcore, glNewList)
if test "x$ac_cv_lib_GLcore_glNewList" = "xno" ; then
    dnl if no GLcore, check for GL
    AC_CHECK_LIB(GL, glNewList)
    if test "x$ac_cv_lib_GL_glNewList" = "xno" ; then
        dnl if no GL, check for MesaGL
        AC_CHECK_LIB(MesaGL, glNewList)
    fi
else
    dnl if GLcore found, then also check for GL
    AC_CHECK_LIB(GL, glXCreateContext)
fi

AC_CHECK_LIB(GLU, gluLookAt)
if test "x$ac_cv_lib_GLU_gluLookAt" = "xno" ; then
    dnl if no GLU, check for MesaGLU
    AC_CHECK_LIB(MesaGLU, gluLookAt)
fi

AC_CHECK_LIB(glut, glutGetModifiers)
	
dnl cygwin32 is a little wierd because it has to try to handle the various
dnl winbloze-isms.  We'll just do this manually for now.
if test "x$am_cv_cygwin32" = "xyes" ; then
    echo Cygnus Win32 specific hacks...
    AC_DEFINE(WIN32)

    dnl Note, the double square brackets are required becuase single brackets
    dnl seem to get stripped out
    if [[ -f `pwd`/Win32/glut.dll ]]; then
        echo "    found glut.dll, adding -lglut"
        LIBS="$LIBS -lglut"
    else
        echo "    Cannot find glut.dll"
        exit 1
    fi
    if [[ -f `pwd`/Win32/glu.dll ]]; then
        echo "    found glu.dll"
    else
        echo "    Can't find glu.dll, assuming it's someplace"
    fi
    echo "    adding -lglu"
    LIBS="$LIBS -lglu"
    if [[ -f `pwd`/Win32/opengl.dll ]]; then
        echo "    found opengl.dll"
    else
        echo "    Can't find opengl.dll, assuming it's somplace"
    fi
    echo "    adding -lopengl"
    LIBS="$LIBS -lopengl"
    echo "    adding -luser32 -lgdi32"
    LIBS="$LIBS -luser32 -lgdi32"
    ac_cv_lib_glut_glutGetModifiers="yes"
fi

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS( fcntl.h getopt.h malloc.h stdlib.h sys/time.h sys/timeb.h \
	unistd.h windows.h winbase.h values.h )

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_STRUCT_TM

dnl Checks for library functions.
AC_TYPE_SIGNAL
AC_FUNC_VPRINTF
AC_CHECK_FUNCS( ftime gettimeofday mktime strstr rand random \
	setitimer getitimer signal GetLocalTime )

if test "x$ac_cv_lib_glut_glutGetModifiers" = "xno"; then
    echo 
    echo "Unable to find the necessary GL libraries."
    exit 1
fi

AM_CONFIG_HEADER(Include/config.h)

AC_OUTPUT( \
	Makefile \
	Include/Makefile \
	Lib/Makefile \
	Lib/Bucket/Makefile \
	Lib/Debug/Makefile \
	Lib/DEM/Makefile \
	Lib/Math/Makefile \
	Lib/XGL/Makefile \
	Lib/zlib/Makefile \
	Simulator/Makefile \
	Simulator/Aircraft/Makefile \
	Simulator/Astro/Makefile \
	Simulator/Autopilot/Makefile \
	Simulator/Cockpit/Makefile \
	Simulator/Controls/Makefile \
	Simulator/Flight/LaRCsim/Makefile \
	Simulator/Flight/Slew/Makefile \
	Simulator/Flight/Makefile \
	Simulator/Joystick/Makefile \
	Simulator/Main/Makefile \
	Simulator/Main/runfg \
	Simulator/Main/runfg.bat \
	Simulator/Makefile \
	Simulator/Scenery/Makefile \
	Simulator/Time/Makefile \
	Simulator/Weather/Makefile \
	Tools/Makefile \
	Tools/AssemTris/Makefile \
	Tools/Dem2node/Makefile \
	Tools/DemRaw2ascii/Makefile \
	Tools/FixNode/Makefile \
	Tools/FixObj/Makefile \
	Tools/SplitTris/Makefile \
	Tools/Stripe_u/Makefile \
	Tools/Tri2obj/Makefile \
	Tools/Triangle/Makefile \
	)