Changes from Bernie Bright:

Added '--with-cxx=COMPILER[:flags]' to ./configure in order to set the
compiler and flags.  If this option is omitted then the default compiler
is assumed (ie the current behaviour).  This duplicates the effect of
passing CC, CFLAGS, CXX and CXXFLAGS on the command line to configure
and make.

SimGear/simgear/compiler.h
Initial support for KAI C++ on linux.

SimGear/simgear/ephemeris/celestialBody.[ch]xx
Removed extraneous semicolons.

SimGear/simgear/io/sg_file.cxx
MSVC tidy up.

configure.in

@@ -8,6 +8,23 @@ AC_INIT(simgear/bucket/newbucket.cxx)
 dnl Initialize the automake stuff
 AM_INIT_AUTOMAKE(SimGear, 0.0.14)
 
+dnl Specify KAI C++ compiler and flags.
+dnl Borrowed with slight modification from blitz distribution.
+AC_ARG_WITH(cxx,
+  [  --with-cxx=COMPILER[:name-flags] set options for COMPILER (KCC)],
+  [case "$withval" in
+    KCC*)    # KAI C++ http://www.kai.com/
+      echo "Configuring for KAI C++"
+      AC_SG_SET_COMPILER($withval,"KCC","--restrict --strict_warnings")
+      CXX_OPTIMIZE_FLAGS=="+K3 -O3"
+      CXX_DEBUG_FLAGS="-g +K0"
+    ;;
+  esac
+])
+
+echo CXX = $CXX
+echo CC = $CC
+
 dnl Checks for programs.
 AC_PROG_MAKE_SET
 AC_PROG_CC