AC_INIT([CADS_fits2jpeg], [1.90], [cads@iiap.res.in])
AC_LANG_C
AM_INIT_AUTOMAKE([-Wall -Werror])
AC_CONFIG_SRCDIR([config.h.in])
AC_CONFIG_HEADERS([config.h])

# Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET

# Checks for libraries.

# Checks for header files.
AC_CHECK_HEADERS([stdio.h stdlib.h string.h math.h])

# Checks for typedefs, structures, and compiler characteristics.

# Checks for library functions.
AC_FUNC_MALLOC

LIBS="$LIBS -L/usr/lib64 -L/usr/lib -lm -ljpeg -lcfitsio"
CFLAGS="-ansi $CFLAGS -I/usr/include -I/usr/include/cfitsio"
#---------------------------------------------------------------------#
#           Now we check for cfitsio headers and library              #
#---------------------------------------------------------------------#
fitserror="
 +------------------------------------------------------------------+
 | Unable to find cfitsio distribution. You may need to get it from |
 |   http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html  |
 +------------------------------------------------------------------+
"
AC_ARG_WITH(cfitsio,
            [ --with-cfitsio[=DIR]     Location of the cfitsio distribution],
            [CFITS=$with_cfitsio]
)

if test x"$CFITS" != 'x'; then
        LIBS="-L$CFITS -L$CFITS/lib64 -L$CFITS/lib $LIBS"
        CFLAGS="$CFLAGS -I$CFITS -I$CFITS/include -I$CFITS/include/cfitsio"
fi

AC_MSG_CHECKING(for cfitsio)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
            #include <stdio.h>
            #include <stdlib.h>
            #include <fitsio2.h>]],
          [[    fitsfile *fptr]])],
          [cfitsio=yes],[cfitsio=no])
AC_MSG_RESULT([$cfitsio])

if test "$cfitsio" != "yes"; then
    AC_MSG_ERROR($fitserror)
fi

#---------------------------------------------------------------------#
#                   And the jpeg headers and library                  #
#---------------------------------------------------------------------#
jpegerror="
 +------------------------------------------------------------------+
 |            Unable to find jpeg library and headers               |
 +------------------------------------------------------------------+
"
AC_ARG_WITH(jpeglib,
            [ --with-jpeglib[=DIR]     Location of the jpeg library],
            [LJPG=$with_jpeglib]
)

if test x"$LJPG" != 'x'; then
        LIBS="-L$LJPG -L$LJPG/lib64 -L$LJPG/lib $LIBS"
        CFLAGS="$CFLAGS -I$LJPG -I$LJPG/include -I$LJPG/include/jpeglib"
fi

AC_MSG_CHECKING(for jpeglib)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
            #include <stdio.h>
            #include <stdlib.h>
            #include <jpeglib.h>]],
          [[    FILE *jpeg_file]])],
          [jpeg=yes],[jpeg=no])
AC_MSG_RESULT([$jpeg])

if test "$jpeg" != "yes"; then
        AC_MSG_ERROR($jpegerror)
fi

AC_OUTPUT(Makefile src/Makefile)

echo
echo " +------------------------------------------------------------------+"
echo " | Configuration complete                                           |"
echo " | Type 'make' to compile the software, followed by 'make install'  |"
echo " |                   All the very best! :-)                         |"
echo " |                                             --CADS Software Team |"
echo " +------------------------------------------------------------------+"
echo