configure.in

dnl   Copyright 2002-2004 by Zhang Le <ejoy@xinhuanet.com>
dnl   Last Change : 09-Feb-2012.

AC_INIT(Jamrules.in)

AC_CONFIG_HEADER(config.h)
AC_CONFIG_AUX_DIR(script)

AC_DEFINE([CMDLINE_PARSER_VERSION],  ["version-devel"],  [package's version])

dnl Check platform
AC_CANONICAL_HOST

dnl use C++ do lib checking
AC_LANG_CPLUSPLUS

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_PROG_FC
AC_FC_LIBRARY_LDFLAGS
if test -n "$FC" ; then
    AC_DEFINE([HAVE_FORTRAN],  [1],  [defined to 1 if a fortran compiler is found])
fi

# the two macro will cause strange linking problems
# so they are disabled.
# libg2c must be checked manually
#AC_FC_DUMMY_MAIN
#AC_FC_LIBRARY_LDFLAGS
AC_C_BIGENDIAN

wi_ARG_DISABLE_CCDV
dnl check for compiler flags and debug options 
AC_ARG_ENABLE(debug,
    [  --enable-debug          compile for debug, useful for developers.[default=no]],
    [if test "x$enableval" = "xyes"; then
         enable_debug=yes
     else
         enable_debug=no
     fi])

AC_ARG_ENABLE(static,
    [  --enable-static         build static binaries [default=no]],
    [if test "x$enableval" = "xyes"; then
         enable_static=yes
     else
         enable_static=no
     fi])

AC_ARG_ENABLE(system-boost-lib,
    [  --disable-system-boost-lib   use boost shipped with this package [default=no]],
    [if test "x$enableval" = "xyes"; then
         use_builtin_boost=no
     else
         use_builtin_boost=yes
     fi])

dnl AC_CHECK_PROGS(MAKE, gmake make)
dnl AC_SUBST(MAKE)
wi_PROG_CCDV

dnl Checks for header files.
dnl AC_CHECK_HEADERS([fcntl.h string.h sys/ioctl.h termios.h unistd.h])
AC_CHECK_HEADERS([ieeefp.h]) dnl finite() on sun os
AC_CHECK_HEADER([boost/config.hpp], [], [use_builtin_boost=yes])

dnl Checks for typedefs, structures, and compiler characteristics.

dnl Checks for library functions.
AC_CHECK_FUNCS([gettimeofday getopt_long])
# AC_CHECK_FUNC(srand)
AC_FUNC_MMAP
AC_CHECK_LIB(m, main)
AC_CHECK_LIB(gnugetopt, getopt)
AC_CHECK_LIB(z, main)
#AC_CHECK_LIB(g2c, main)
# TODO: if no fortran compiler is found, disable lbfgs and use GIS instead
#if test "$ac_cv_lib_g2c_main" = 'no'; then
#    echo "libg2c not found, this should be shipped with GNU Fortran compiler."
#    echo "configure gives up."
#    exit 1
#fi

if test "$use_builtin_boost" = 'yes'; then
    echo "**info** configure will use boost lib shipped with this package"
    BOOST_LIB='$(TOP)/lib/'
fi

if test "$enable_debug" = 'yes'; then
    CFLAGS="$CFLAGS $CPPFLAGS -g -Wall -DHAVE_CONFIG_H" 
    CXXFLAGS="$CXXFLAGS $CPPFLAGS -g -Wall -DHAVE_CONFIG_H" 
    OPTIM="-O0"
    TARGET_DIR=""
else
    CFLAGS="$CFLAGS $CPPFLAGS -Wall -DNDEBUG -DHAVE_CONFIG_H" 
    CXXFLAGS="$CXXFLAGS $CPPFLAGS -Wall -DNDEBUG -DHAVE_CONFIG_H" 
    OPTIM="-O3"
    TARGET_DIR="src/opt"
fi

if test "$enable_static" = 'yes'; then
    LINK="$CXX $LDFLAGS -static"
else
    LINK="$CXX $LDFLAGS"
    CFLAGS="$CFLAGS -fPIC"
    CXXFLAGS="$CXXFLAGS -fPIC"
    FCFLAGS="$FCFLAGS -fPIC"
fi

# show optional compoment information
echo ""
if test "$ac_cv_lib_z_main" = 'no'; then
    echo "**info** zlib not found, compressed model file disabled!"
    echo ""
fi

if test -z "$FC" ; then
    echo "**info** Fortran compiler not found, LBFGS optimization module disabled!"
    echo "**info** Only GIS training method is availiable."
    echo ""
fi

AC_SUBST(OPTIM)
AC_SUBST(LINK)
AC_SUBST(TARGET_DIR)
AC_SUBST(BOOST_LIB)
AC_SUBST(host_cpu)
AC_SUBST(host_os)
AC_SUBST(host_vendor)

dnl for use in python/setup.py.in
#AC_SUBST(ac_cv_lib_g2c_main)
AC_SUBST(ac_cv_lib_z_main)
AC_SUBST(ac_cv_func_getopt_long)

AC_OUTPUT(Jamrules python/setup.py)

echo "configure complete, now type make to build."
echo ""