[Somelib] Modifications for Solaris 2.6

[Nathan D. <nd...@us...>]

Here are the modifications I made to the configure.in file in order to
get it to work on my solaris 2.6 box.  With these changes it compiled
and worked without a problem.

* Added a check for whether its compiling on a solaris system

* Although the dl library was installed on my system, the configure
  script could not find it.  To fix this:

  - I added a check for the standard C compiler.  Without this, the
    check for the ld library failed because it was using a default
    (wrong) value for the C compiler.
  
  - I moved the dl library check to after the check for the C compiler
    so that it would use the compiler found in AC_PROG_CC during the
    library check

The modified configure.in script is included below.

Also, the following line in INSTALL should be modified to refer to the
SOMELib CVS directory.

 "cd to the toplevel SOMELib directory (some0-5 if you checked out from CVS)"

Thanks,
-- 
Nathan  Doss                     nd...@us...	




dnl Process this file with autoconf to produce a configure script.

AC_INIT()
AC_CONFIG_HEADER(config/config.h)
AC_PREFIX_DEFAULT(/usr)
AC_CANONICAL_HOST

dnl define os
echo "host_os = \"$host_os\""

platform="nohostplatform"

dnl hpux
if test "$host_os" = "hpux10.20"; then
platform="hpux"
AC_DEFINE(USE_SOME_HPUX_SL, 1)
fi

dnl linux
if test "$host_os" = "linux-gnu"; then
platform="unix_so"
fi

if test "$host_os" = "freebsdelf4.2"; then
platform="unix_so"
fi

dnl solaris
solaris_os=`echo "$host_os" | sed 's/solaris.*/yes/'`
if test "$solaris_os" = "yes"; then
platform="unix_so"
fi

dnl oh no we havent configured for this platform yet
if test "$platform" = "nohostplatform"; then
echo "I am sorry, platform \"$host_os\" has not been added to our build system yet!"
echo "This could mean 2 thing:"
echo "1) SOMELib will compile under your platform using a similar platforms build."
echo "2) SOMELib will not compile unless you add the platform specific code needed for your platform."
echo
echo "Please go to http://sourceforge.net/projects/somelib to find out how you can get your platform working with SOMELib!!!"
exit -1;
fi
AC_SUBST(platform)


AC_ARG_ENABLE(debug,
  [  --enable-debug          Debugging options],
  debug=yes, debug=no)
AC_SUBST(debug)

AC_ARG_ENABLE(verbose,
  [  --enable-verbose        Verbose output],
  verbose=yes, verbose=no)
AC_SUBST(verbose)

dnl Checks for programs.
AC_PROG_CC
CXXFLAGS="$CXXFLAGS "
AC_PROG_CXX
AC_PROG_INSTALL

dnl Checks for libraries.

dnl unix_so
if test "$platform" = "unix_so"; then
dnl check for so loading libs
AC_CHECK_LIB(dl, dlopen,
HAVE_LIBDL=yes
,
AC_CHECK_FUNC(dlopen,
HAS_DLOPEN=yes,
echo "ERROR: Can't find dynamic linking funtionality!!! Please install libdl."
)
)

AC_SUBST(HAVE_LIBDL)
AC_DEFINE(USE_SOME_UNIX_SO, 1)
fi

dnl Checks for header files.

dnl Checks for typedefs, structures, and compiler characteristics.

dnl Checks for library functions.

AC_OUTPUT(config/config.mk)