+# Check for "plib" without which we cannot go on
+AC_CHECK_HEADER(plib/ul.h)
+if test "x$ac_cv_header_plib_ul_h" != "xyes"; then
+ echo
+ echo "You *must* have the plib library installed on your system to build"
+ echo "the FGFS simulator!"
+ echo
+ echo "Please see README.plib for more details."
+ echo
+ echo "configure aborted."
+ exit
+fi
+
+AC_MSG_CHECKING([for plib 1.8.5 or newer])
+AC_TRY_RUN([
+#include <plib/ul.h>
+
+#define MIN_PLIB_VERSION 185
+
+int main() {
+ int major, minor, micro;
+
+ if ( PLIB_VERSION < MIN_PLIB_VERSION ) {
+ return -1;
+ }
+
+ return 0;
+}
+
+],
+ AC_MSG_RESULT(yes),
+ [AC_MSG_RESULT(wrong version);
+ AC_MSG_ERROR([Install plib 1.8.5 or later first...])],
+ AC_MSG_RESULT(yes)
+)
+
+dnl If we get here then plib is available, so force use of plib
+dnl joystick lib
+AC_DEFINE([ENABLE_PLIB_JOYSTICK], 1, [Define to enable plib joystick support])
+
+AC_CHECK_HEADER(osg/Version)
+if test "x$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="$LIBS -losgFXd"
+ AC_CHECK_LIB(osgUtild,osgUtilGetVersion)
+ AC_CHECK_LIB(osgDBd,osgDBGetVersion)
+ AC_CHECK_LIB(osgSimd,osgSimGetVersion)
+ AC_CHECK_LIB(osgParticled,osgParticleGetVersion)
+ AC_CHECK_LIB(osgd,osgGetVersion)
+ AC_CHECK_LIB(OpenThreadsd,OpenThreadsGetVersion)
+ else
+ AC_CHECK_FRAMEWORK(osgViewer, [#include <osgViewer/Version>])
+ AC_CHECK_FRAMEWORK(osgGA, [#include <osgGA/Version>])
+ AC_CHECK_FRAMEWORK(osgText, [#include <osgText/Version>])
+ AC_CHECK_FRAMEWORK(osgFX, [#include <osgFX/AnisotropicLighting>])
+ AC_CHECK_FRAMEWORK(osgUtil, [#include <osgUtil/Version>])
+ AC_CHECK_FRAMEWORK(osgDB, [#include <osgDB/Version>])
+ AC_CHECK_FRAMEWORK(osgSim, [#include <osgSim/Version>])
+ AC_CHECK_FRAMEWORK(osgParticle, [#include <osgParticle/Version>])
+ AC_CHECK_FRAMEWORK(osg, [#include <osg/Version>])
+ AC_CHECK_FRAMEWORK(OpenThreads, [#include <OpenThreads/Version>])
+ fi
+ ;;
+*)
+ if test "x$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
+