dnl Process this file with autoget.sh to produce a working configure dnl script. AC_INIT AC_CONFIG_SRCDIR([src/Aircraft/aircraft.cxx]) dnl Require at least automake 2.52 AC_PREREQ(2.52) dnl Initialize the automake stuff dnl set the $host variable based on local machine/os AC_CANONICAL_TARGET AM_INIT_AUTOMAKE(FlightGear, 1.99.4) dnl Checks for programs. AC_PROG_MAKE_SET AC_PROG_CC AC_PROG_CPP AC_PROG_CXX AC_PROG_RANLIB AC_PROG_INSTALL AC_PROG_LN_S # specify the simgear location AC_ARG_WITH(simgear, [ --with-simgear=PREFIX Specify the prefix path to simgear]) if test "x$with_simgear" != "x" ; then echo "SimGear prefix path is $with_simgear" EXTRA_DIRS="${EXTRA_DIRS} $with_simgear" CXXFLAGS="$CXXFLAGS -I$with_simgear" fi # specify the plib location AC_ARG_WITH(plib, [ --with-plib=PREFIX Specify the prefix path to plib]) if test "x$with_plib" != "x" ; then echo "plib prefix is $with_plib" EXTRA_DIRS="${EXTRA_DIRS} $with_plib" fi # specify the osg location AC_ARG_WITH(osg, [ --with-osg=PREFIX Specify the prefix path to osg]) if test "x$with_osg" != "x" ; then echo "osg prefix is $with_osg" EXTRA_DIRS="${EXTRA_DIRS} $with_osg" fi dnl Determine an extra directories to add to include/lib search paths case "${host}" in *-apple-darwin* | *-*-mingw32*) echo no EXTRA_DIRS for $host ;; *-*-cygwin*) if test -d /usr/local ; then EXTRA_DIRS="${EXTRA_DIRS} /usr/local" fi ;; *) if test -d /usr/X11R6 ; then EXTRA_DIR1="/usr/X11R6" fi if test -d /opt/X11R6 ; then EXTRA_DIR2="/opt/X11R6" fi EXTRA_DIRS="${EXTRA_DIRS} $EXTRA_DIR1 $EXTRA_DIR2 /usr/local" ;; esac wi_EXTRA_DIRS(no, ${EXTRA_DIRS}) case "${host}" in *-*-irix*) if test "$CXX" = "CC"; then AR="CC -ar" ARFLAGS="-o" CXXFLAGS="$CXXFLAGS -c99 -I$with_simgear/include/simgear/compatibility" CFLAGS="$CFLAGS -c99" else AR="ar" ARFLAGS="cru" fi ;; *) AR="ar" ARFLAGS="cru" ;; esac AC_SUBST(AR) AC_SUBST(ARFLAGS) dnl set logging; default value of with_logging=yes AC_ARG_WITH(logging, [ --with-logging Include logging output (default)]) if test "x$with_logging" = "xno" ; then AC_DEFINE([FG_NDEBUG], 1, [Define for no logging output]) fi AC_ARG_ENABLE(sp_fdms, [ --enable-sp-fdms Include special purpose Flight Models], [enable_sp_fdms="$enableval"] ) if test "x$enable_sp_fdms" != "xno"; then AC_DEFINE([ENABLE_SP_FDM], 1, [Define to include special purpose FDMs]) else AC_DEFINE([ENABLE_SP_FDM], 0, [Define to include special purpose FDMs]) fi AM_CONDITIONAL(ENABLE_SP_FDM, test "x$enable_sp_fdms" != "xno") dnl Thread related checks # defaults to yes AC_ARG_WITH(threads, [ --with-threads Include tile loading threads [default=yes]], [], [with_threads=yes]) if test "x$with_threads" = "xyes"; then AC_DEFINE([ENABLE_THREADS], 1, [Define to enable threaded tile paging]) CXXFLAGS="$CXXFLAGS -D_REENTRANT" CFLAGS="$CFLAGS -D_REENTRANT" fi AC_CHECK_HEADER(pthread.h) AM_CONDITIONAL(WITH_THREADS, test "x$with_threads" = "xyes") dnl Used by JSBSim to conditionally compile in fgfs interface code AC_DEFINE([FGFS], 1, [Define so that JSBSim compiles in 'library' mode]) # Check for MS Windows environment AC_CHECK_HEADER(windows.h) dnl Using AM_CONDITIONAL is a step out of the protected little dnl automake fold so it is potentially dangerous. But, we are dnl beginning to run into cases where the standard checks are not dnl enough. AM_CONDITIONALS are then referenced to conditionally dnl build a Makefile.in from a Makefile.am which lets us define custom dnl includes, compile alternative source files, etc. dnl Check for external variables daylight and timezone. AC_EXT_DAYLIGHT if test "$have_daylight" = yes; then AC_DEFINE([HAVE_DAYLIGHT], 1, [Define if system has daylight variable]) fi AC_EXT_TIMEZONE if test "$have_timezone" = yes; then AC_DEFINE([HAVE_TIMEZONE], 1, [Define if system has timezone variable]) fi dnl add joystick support libraries dnl search for FreeBSD library AC_SEARCH_LIBS(hid_init, usbhid) joystick_LIBS="$LIBS" LIBS="" dnl ENABLE_AUDIO_SUPPORT could be depricated at any time in favor of dnl just assuming we have audio support on all platform. We can dnl depend on plib to hide the details. AC_DEFINE([ENABLE_AUDIO_SUPPORT], 1, [Define for audio support]) dnl X11 might be installed on Mac OS X or cygwin/mingwin, we don't want dnl to use it if it is. case "${host}" in *-apple-darwin* | *-*-cygwin* | *-*-mingw32*) echo no fancy X11 check ;; *) AC_PATH_XTRA ;; esac dnl Checks for libraries. dnl Thread related checks AC_SEARCH_LIBS(pthread_create, [pthread c_r]) if test "x$ac_cv_header_pthread_h" = "xyes"; then if test "x$ac_cv_search_pthread_exit" = "x-lc_r"; then CXXFLAGS="-pthread $CXXFLAGS" CFLAGS="-pthread $CFLAGS" fi fi thread_LIBS="$LIBS" LIBS="" dnl search for network related libraries AC_SEARCH_LIBS(inet_addr, xnet) AC_SEARCH_LIBS(socket, socket) AC_SEARCH_LIBS(main, nsl) network_LIBS="$LIBS" LIBS="" dnl check for some default libraries AC_SEARCH_LIBS(sqrt, [am ffm fm fastm m]) AC_SEARCH_LIBS(ceil, m) AC_SEARCH_LIBS(dlclose, dl) base_LIBS="$LIBS" dnl Check for SDL or glut if enabled. AC_ARG_ENABLE(osgviewer, [ --enable-osgviewer Configure to use osgViewer(default)], [enable_osgviewer="$enableval"]) AC_ARG_ENABLE(sdl, [ --enable-sdl Configure to use SDL], [enable_sdl="$enableval"]) AC_ARG_ENABLE(glut, [ --enable-glut Configure to use GLUT], [enable_glut="$enableval"]) AM_CONDITIONAL(USE_SDL, test "x$enable_sdl" = "xyes") AM_CONDITIONAL(USE_GLUT, test "x$enable_glut" = "xyes") if test "x$enable_sdl" != "xyes" -a "x$enable_glut" != "xyes" -a "x$enable_osgviewer" != "xno"; then enable_osgviewer="yes" fi if test \( "x$enable_osgviewer" = "xyes" \ -a \( "x$enable_sdl" = "xyes" -o "x$enable_glut" = "xyes" \) \) \ -o \( "x$enable_sdl" = "xyes" -a "x$enable_glut" = "xyes" \); then echo " Only one of --enable-osgviewer, --enable-sdl, or --enable -glut may" echo " be supplied." exit fi AC_DEFINE([PU_USE_NONE], 1, [Define to use application's pu callbacks]) AC_ARG_ENABLE(osgdebug, [ --enable-osgdebug Use OSG debug libraries], [enable_osgdebug="$enableval"]) dnl check for OpenGL related libraries case "${host}" in *-*-cygwin* | *-*-mingw32*) dnl CygWin under Windoze. echo Win32 specific hacks... AC_DEFINE([WIN32], 1, [Define for Win32 platforms]) AC_DEFINE([NOMINMAX], 1, [Define for Win32 platforms]) if test "x$enable_sdl" = "xyes"; then AC_SEARCH_LIBS(SDL_Init, SDL) else LIBS="$LIBS -lglut32" fi LIBS="$LIBS -lglu32 -lopengl32 -luser32 -lgdi32" joystick_LIBS="$joystick_LIBS -lwinmm" dnl add -lwsock32 for mingwin case "${host}" in *-*-mingw32*) echo "********** BUILDING FOR MINGW32 *************" network_LIBS="$network_LIBS -lws2_32" ;; esac echo "Will link apps with $LIBS" ;; *-apple-darwin*) dnl Mac OS X LIBS="$LIBS -framework GLUT -framework OpenGL -framework AGL -framework Carbon -lobjc" joystick_LIBS="$joystick_LIBS -framework IOKit -framework CoreFoundation" ;; *) dnl X-Windows based machines dnl Skip X11 library tests if requested. if test "x$no_x" != "xyes"; then AC_SEARCH_LIBS(XCreateWindow, X11) AC_SEARCH_LIBS(XShmCreateImage, Xext) AC_SEARCH_LIBS(XGetExtensionVersion, Xi) AC_SEARCH_LIBS(IceOpenConnection, ICE) AC_SEARCH_LIBS(SmcOpenConnection, SM) AC_SEARCH_LIBS(XtMalloc, Xt) AC_SEARCH_LIBS(XmuLookupStandardColormap, Xmu) fi AC_SEARCH_LIBS(glNewList, [ GL GLcore MesaGL ]) if test "x$ac_cv_search_glNewList" = "x-lGLcore"; then dnl if GLcore found, then also check for GL AC_SEARCH_LIBS(glXCreateContext, GL) fi dnl if using mesa, check for xmesa.h if test "x$ac_cv_search_glNewList" = "x-lMesaGL"; then AC_CHECK_HEADER(GL/fxmesa.h) if test "x$ac_cv_header_GL_fxmesa_h" = "xyes"; then AC_DEFINE([XMESA], 1, [Define for fxmesa]) AC_DEFINE([FX], 1, [Define for fxmesa]) fi fi AC_SEARCH_LIBS(gluLookAt, [ GLU MesaGLU ]) AC_SEARCH_LIBS(glutGetModifiers, [ glut freeglut ]) if test "x$enable_sdl" = "xyes"; then AC_SEARCH_LIBS(SDL_Init, SDL) fi ;; esac opengl_LIBS="$LIBS" LIBS="$base_LIBS $joystick_LIBS" dnl check for OpenAL libraries OPENAL_OK="no" ALUT_OK="no" case "${host}" in *-*-cygwin* | *-*-mingw32*) dnl CygWin under Windoze. INCLUDES="$INCLUDES -I/usr/local/include/" LIBS="$LIBS -L/usr/local/lib" AC_SEARCH_LIBS(alGenBuffers, [ openal32 openal ] ) AC_SEARCH_LIBS(alutInit, [ openal32 ALut alut ] ) LIBS="$LIBS -lwinmm -ldsound -ldxguid -lole32" openal_LIBS="$LIBS" OPENAL_OK="$ac_cv_search_alGenBuffers" ALUT_OK="$ac_cv_search_alutInit" ;; *-apple-darwin*) dnl Mac OS X LIBS="$LIBS -framework IOKit -framework OpenAL" openal_LIBS="$LIBS" # not sure how to test if OpenAL exists on MacOS (does it come by default?) OPENAL_OK="yes" ALUT_OK="yes" ;; *) dnl default unix style machines save_LIBS=$LIBS LIBS="$LIBS $thread_LIBS" AC_SEARCH_LIBS(alGenBuffers, openal) AC_SEARCH_LIBS(alutInit, [ alut openal ] ) OPENAL_OK="$ac_cv_search_alGenBuffers" ALUT_OK="$ac_cv_search_alutInit" openal_LIBS="$LIBS" LIBS=$save_LIBS ;; esac if test "$OPENAL_OK" == "no"; then echo echo "You *must* have the openal library installed on your system to build" echo "SimGear!" echo echo "Please see README.OpenAL for more details." echo echo "configure aborted." exit fi if test "$ALUT_OK" == "no"; then echo echo "You *must* have the alut library installed on your system to build" echo "SimGear!" echo echo "Please see README.OpenAL for more details." echo echo "configure aborted." exit fi LIBS="$base_LIBS" AC_SUBST(base_LIBS) AC_SUBST(openal_LIBS) AC_SUBST(opengl_LIBS) AC_SUBST(thread_LIBS) AC_SUBST(network_LIBS) AC_SUBST(joystick_LIBS) # The following are C++ items that need to be tested for with the c++ # compiler AC_LANG_PUSH(C++) dnl Check for the presence of SimGear if test "x$with_simgear" != "x"; then AC_CHECK_HEADER($with_simgear/include/simgear/version.h, [ac_cv_header_simgear_version_h=yes], [ac_cv_header_simgear_version_h=no]) else AC_CHECK_HEADER(simgear/version.h) fi if test "x$ac_cv_header_simgear_version_h" != "xyes"; then echo echo "You *must* have the SimGear support library installed on your system" echo "to build the FGFS simulator!" echo echo "Please see README.SimGear for more details." echo echo "configure aborted." exit fi AC_MSG_CHECKING([for simgear 0.3.10 or newer]) AC_TRY_RUN([ #include #include #define STRINGIFY(X) XSTRINGIFY(X) #define XSTRINGIFY(X) #X #define MIN_MAJOR 0 #define MIN_MINOR 3 #define MIN_MICRO 10 int main() { int major, minor, micro; /* printf("%d.%d.%d or greater, ", MIN_MAJOR, MIN_MINOR, MIN_MICRO); */ printf("[found %s] ... ", STRINGIFY(SIMGEAR_VERSION)); sscanf( STRINGIFY(SIMGEAR_VERSION), "%d.%d.%d", &major, &minor, µ ); if ( (major < MIN_MAJOR) || (major == MIN_MAJOR && minor < MIN_MINOR) || (major == MIN_MAJOR && minor == MIN_MINOR && micro < MIN_MICRO) ) { return -1; } return 0; } ], AC_MSG_RESULT(yes), [AC_MSG_RESULT(wrong version); AC_MSG_ERROR([Install latest simgear first...])], AC_MSG_RESULT(yes) ) LIBS="$saved_LIBS" dnl Check if SimGear was built with Norman's JPEG factory support if test "x$with_simgear" != "x"; then AC_CHECK_HEADER($with_simgear/include/simgear/screen/jpgfactory.hxx,[ac_cv_header_simgear_screen_jpgfactory_hxx=yes],[ac_cv_header_simgear_screen_jpgfactory_hxx=no]) else AC_CHECK_HEADER(simgear/screen/jpgfactory.hxx) fi if test "x$ac_cv_header_simgear_screen_jpgfactory_hxx" = "xyes"; then AC_CHECK_LIB(jpeg, jpeg_start_compress) if test "x$ac_cv_lib_jpeg_jpeg_start_compress" != "xyes" ; then echo echo "The JPEG factory code was built and installed with SimGear." echo "However it appears the libjpeg is no longer installed." echo "You need to install libjpeg or remove jpgfactory support from" echo "SimGear" echo echo "libjpeg is available at :" echo " ftp://ftp.uu.net in the directory graphics/jpeg" exit 1 fi AC_DEFINE([FG_JPEG_SERVER], 1, [Define to build with jpeg screen shot server]) fi AM_CONDITIONAL(ENABLE_JPEG_SERVER, test "x$ac_cv_header_simgear_screen_jpgfactory_hxx" = "xyes") # Check for "plib" without which we cannot go on AC_CHECK_HEADER(plib/ul.h) if test "x$ac_cv_header_plib_ul_h" != "xyes"; then echo echo "You *must* have the plib library installed on your system to build" echo "the FGFS simulator!" echo echo "Please see README.plib for more details." echo echo "configure aborted." exit fi AC_MSG_CHECKING([for plib 1.8.5 or newer]) AC_TRY_RUN([ #include #define MIN_PLIB_VERSION 185 int main() { int major, minor, micro; if ( PLIB_VERSION < MIN_PLIB_VERSION ) { return -1; } return 0; } ], AC_MSG_RESULT(yes), [AC_MSG_RESULT(wrong version); AC_MSG_ERROR([Install plib 1.8.5 or later first...])], AC_MSG_RESULT(yes) ) dnl If we get here then plib is available, so force use of plib dnl joystick lib AC_DEFINE([ENABLE_PLIB_JOYSTICK], 1, [Define to enable plib joystick support]) AC_CHECK_HEADER(osg/Version) if test "x$ac_cv_header_osg_Version" != "xyes"; then echo echo "You *must* have the OpenSceneGraph support library installed on your system" echo "to build the FGFS simulator!" echo echo "Please see README.OSG for more details." echo echo "configure aborted." exit fi # Find the OSG libraries. Note special handling for OS X frameworks case "${host}" in *-apple-darwin*) dnl Thank you Christian Bauer from SheepSaver dnl AC_CHECK_FRAMEWORK($1=NAME, $2=INCLUDES) AC_DEFUN([AC_CHECK_FRAMEWORK], [ AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])dnl AC_CACHE_CHECK([whether compiler supports framework $1], ac_Framework, [ saved_LIBS="$LIBS" LIBS="$LIBS -framework $1" AC_TRY_LINK( [$2], [], [AS_VAR_SET(ac_Framework, yes)], [AS_VAR_SET(ac_Framework, no); LIBS="$saved_LIBS"] ) ]) AS_IF([test AS_VAR_GET(ac_Framework) = yes], [AC_DEFINE(AS_TR_CPP(HAVE_FRAMEWORK_$1), 1, [Define if framework $1 is available.])] ) AS_VAR_POPDEF([ac_Framework])dnl ]) if test "x$enable_osgdebug" = "xyes"; then AC_CHECK_LIB(osgViewerd,osgViewerGetVersion) AC_CHECK_LIB(osgGAd,osgGAGetVersion) AC_CHECK_LIB(osgTextd,osgTextGetVersion) LIBS="$LIBS -losgFXd" AC_CHECK_LIB(osgUtild,osgUtilGetVersion) AC_CHECK_LIB(osgDBd,osgDBGetVersion) AC_CHECK_LIB(osgSimd,osgSimGetVersion) AC_CHECK_LIB(osgParticled,osgParticleGetVersion) AC_CHECK_LIB(osgd,osgGetVersion) AC_CHECK_LIB(OpenThreadsd,OpenThreadsGetVersion) else AC_CHECK_FRAMEWORK(osgViewer, [#include ]) AC_CHECK_FRAMEWORK(osgGA, [#include ]) AC_CHECK_FRAMEWORK(osgText, [#include ]) AC_CHECK_FRAMEWORK(osgFX, [#include ]) AC_CHECK_FRAMEWORK(osgUtil, [#include ]) AC_CHECK_FRAMEWORK(osgDB, [#include ]) AC_CHECK_FRAMEWORK(osgSim, [#include ]) AC_CHECK_FRAMEWORK(osgParticle, [#include ]) AC_CHECK_FRAMEWORK(osg, [#include ]) AC_CHECK_FRAMEWORK(OpenThreads, [#include ]) fi ;; *) if test "x$enable_osgdebug" = "xyes"; then AC_CHECK_LIB(OpenThreadsd,OpenThreadsGetVersion) AC_CHECK_LIB(osgd,osgGetVersion) AC_CHECK_LIB(osgUtild,osgUtilGetVersion) AC_CHECK_LIB(osgDBd,osgDBGetVersion) AC_CHECK_LIB(osgTextd,osgTextGetVersion) AC_CHECK_LIB(osgGAd,osgGAGetVersion) AC_CHECK_LIB(osgViewerd,osgViewerGetVersion) AC_CHECK_LIB(osgSimd,osgSimGetVersion) AC_CHECK_LIB(osgParticled,osgParticleGetVersion) LIBS="$LIBS -losgFXd" else AC_CHECK_LIB(OpenThreads,OpenThreadsGetVersion) AC_CHECK_LIB(osg,osgGetVersion) AC_CHECK_LIB(osgUtil,osgUtilGetVersion) AC_CHECK_LIB(osgDB,osgDBGetVersion) AC_CHECK_LIB(osgText,osgTextGetVersion) AC_CHECK_LIB(osgGA,osgGAGetVersion) AC_CHECK_LIB(osgViewer,osgViewerGetVersion) AC_CHECK_LIB(osgSim,osgSimGetVersion) AC_CHECK_LIB(osgParticle,osgParticleGetVersion) LIBS="$LIBS -losgFX" fi ;; esac AC_LANG_POP dnl Check for system installed zlib AC_CHECK_HEADER(zlib.h) if test "x$ac_cv_header_zlib_h" != "xyes"; then echo echo "zlib library not found." echo echo "If your OS does not provide an installable package for zlib" echo "you will have to compile and install it first yourself. A copy" echo "of zlib-1.1.4.tar.gz is included with SimGear. You will" echo "have to untar this source code, and follow it's included instructions" echo "to compile and install on your system." echo echo "configure aborted." echo fi dnl Checks for header files. AC_HEADER_STDC AC_CHECK_HEADERS( \ fcntl.h getopt.h malloc.h memory.h stdlib.h sys/param.h sys/stat.h \ sys/time.h sys/timeb.h unistd.h windows.h values.h ) dnl Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T AC_HEADER_TIME AC_STRUCT_TM dnl Checks for library functions. old_LIBS=$LIBS LIBS="$base_LIBS $network_LIBS $opengl_LIBS" AC_TYPE_SIGNAL AC_FUNC_VPRINTF AC_CHECK_FUNCS( [ \ ftime gettimeofday timegm memcpy bcopy mktime strstr rand mkfifo \ random drand48 setitimer getitimer signal GetLocalTime rint getrusage \ truncf ] ) LIBS=$old_LIBS AM_CONFIG_HEADER(src/Include/config.h) AC_CONFIG_FILES([ \ Makefile \ man/Makefile \ man/est-epsilon.1 \ man/fgfs.1 \ man/fgjs.1 \ man/gl-info.1 \ man/js_demo.1 \ man/pstest.1 \ scripts/Makefile \ scripts/debug/Makefile \ scripts/perl/Makefile \ scripts/perl/examples/Makefile \ scripts/python/Makefile \ src/Makefile \ src/Include/Makefile \ src/Include/version.h \ src/Include/config.h-msvc6 \ src/Include/config.h-msvc71 \ src/Include/config.h-msvc8 \ src/Aircraft/Makefile \ src/Airports/Makefile \ src/ATC/Makefile \ src/ATCDCL/Makefile \ src/Autopilot/Makefile \ src/Cockpit/Makefile \ src/Cockpit/built_in/Makefile \ src/Environment/Makefile \ src/FDM/ExternalNet/Makefile \ src/FDM/ExternalPipe/Makefile \ src/FDM/JSBSim/Makefile \ src/FDM/JSBSim/initialization/Makefile \ src/FDM/JSBSim/input_output/Makefile \ src/FDM/JSBSim/math/Makefile \ src/FDM/JSBSim/models/Makefile \ src/FDM/JSBSim/models/flight_control/Makefile \ src/FDM/JSBSim/models/atmosphere/Makefile \ src/FDM/JSBSim/models/propulsion/Makefile \ src/FDM/LaRCsim/Makefile \ src/FDM/SP/Makefile \ src/FDM/UIUCModel/Makefile \ src/FDM/YASim/Makefile \ src/FDM/Makefile \ src/GUI/Makefile \ src/Input/Makefile \ src/Instrumentation/Makefile \ src/Instrumentation/KLN89/Makefile \ src/Instrumentation/HUD/Makefile \ src/Main/Makefile \ src/Main/runfgfs \ src/Main/runfgfs.bat \ src/Model/Makefile \ src/AIModel/Makefile \ src/MultiPlayer/Makefile \ src/Navaids/Makefile \ src/Network/Makefile \ src/Scenery/Makefile \ src/Scripting/Makefile \ src/Sound/Makefile \ src/Systems/Makefile \ src/Time/Makefile \ src/Traffic/Makefile \ tests/Makefile \ utils/Makefile \ utils/GPSsmooth/Makefile \ utils/fgadmin/Makefile utils/fgadmin/src/Makefile \ utils/js_server/Makefile \ utils/Modeller/Makefile \ utils/TerraSync/Makefile \ utils/xmlgrep/Makefile \ ]) AC_OUTPUT AC_OUTPUT_COMMANDS([chmod 755 src/Main/runfgfs]) echo "" echo "Configure Summary" echo "=================" echo "Prefix: $prefix" if test "x$with_logging" != "x"; then echo "Debug messages: $with_logging" else echo "Debug messages: yes" fi echo -n "Automake version: " automake --version | head -n 1 if test "x$with_multiplayer" != "xno"; then echo "Building with multiplayer support" fi if test "x$with_threads" = "xyes"; then echo "threads: yes" else echo "threads: no" fi if test "x$enable_sp_fdms" != "xno"; then echo "Include special purpose flight models: yes" else echo "Include special purpose flight models: no" fi