dnl dates are DD/MM/YYYY formated
dnl 12/11/2008 : [Marouane Belaoucha] adding check macros for : piplib, dot, latex2html
dnl 01/12/2008 : [Marouane Belaoucha] add options to pip-include and pip-lib
dnl 09/06/2010 : [Marouane Belaoucha] add options to --with-pip

AC_INIT(configure.in)

AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(fada, 0.1.10)

AC_LANG_CPLUSPLUS
AC_PROG_CXX
AM_PROG_LIBTOOL
AM_PROG_CC_C_O

LDFLAGS="-lpiplib64" 



dnl pip-include and pip-lib options
GIVEN_BOOST_INCLUDE=no
PATH_TO_BOOST_INCLUDE=

AC_ARG_WITH(boost,
	    [  --with-boost=PATH         path of pip include files ],
	    [
		CPPFLAGS="$CPPFLAGS -I${withval}"
		PATH_TO_BOOST_INCLUDE=${withval}
		GIVEN_BOOST_INCLUDE=yes
	    ]
	    )

GIVEN_PIP_INCLUDE=no
PATH_TO_PIP_INCLUDE=
AC_ARG_WITH(pip-include,
	    [  --with-pip-include=PATH         path of pip include files ],
	    [
		CPPFLAGS="$CPPFLAGS -I${withval}"
		PATH_TO_PIP_INCLUDE=${withval}
		GIVEN_PIP_INCLUDE=yes
	    ]
	    )
GIVEN_PIP_LIB=no
PATH_TO_PIP_LIB=
AC_ARG_WITH(pip-lib,
	[--with-pip-lib=PATH    path of libpiplib64.so],
	[
		LDFLAGS="$LDFLAGS -L${withval}"
		PATH_TO_PIP_LIB="${withval}"
		GIVEN_PIP_LIB=yes
	]
	)

if test "x$GIVEN_PIP_INCLUDE" = "xno"; then
   if test "x$GIVEN_PIP_LIB" = "xno"; then
    AC_ARG_WITH(pip,
	    [  --with-pip=PATH         path of pip installation path],
	    [
		CPPFLAGS="$CPPFLAGS -I${withval}/include"
		PATH_TO_PIP_INCLUDE="${withval}/include"
		GIVEN_PIP_INCLUDE="yes"

		LDFLAGS="$LDFLAGS -L${withval}/lib"
		PATH_TO_PIP_LIB="${withval}/lib"
		GIVEN_PIP_LIB="yes"

	    ]
	    )
   fi
fi

echo "PIP_INCLUDE  = $PATH_TO_PIP_INCLUDE"
echo "PIP_LIB  = $PATH_TO_PIP_LIB"

dnl look for libpiplib64.so and piplib/piplib64.h


if test "x$GIVEN_BOOST_INCLUDE" = "xno"; then
	AC_CHECK_HEADER(boost/config.hpp,[],[AC_MSG_ERROR([cannot find BOOST headers. You may use '--with-boost' option to locate it.])])
fi

if test "x$GIVEN_PIP_LIB" = "xno"; then
	AC_CHECK_LIB(piplib64,pip_solve,,[AC_MSG_ERROR([cannot find libpiplib64.so. You may use '--with-pip-lib' option to locate it.])])
else

	if test -f "$PATH_TO_PIP_LIB/libpiplib64.so"; then
		echo "'libpiplib64.so' found in: $PATH_TO_PIP_LIB"
	else
		AC_MSG_ERROR([can not find 'libpiplib64.so' in the given location.])
	fi
fi


if test "x$GIVEN_PIP_INCLUDE" = "xno"; then
	AC_CHECK_HEADER(piplib/piplib64.h,[],[AC_MSG_ERROR([can not find headers for piplib64. You can use '--with-pip-include' to locate it.])])
else
	if test -f "$PATH_TO_PIP_INCLUDE/piplib/piplib64.h"; then
			echo "'piplib64.h' found in: $PATH_TO_PIP_INCLUDE"
	else
		AC_MSG_ERROR([can not find 'piplib/piplib64.h' in the given location.])
	fi
fi


dnl looking for dot
AC_PATH_PROG([DOT],[dot],[no])
if test "$DOT" = "no"; then
   echo "WARNING: dot is required for graphical pretty printing"
fi


AC_PATH_PROG([LATEX2HTML],[latex2html],[no])
if test "$LATEX2HTML" = "no"; then
   echo "WARNING:latex2html is required for graphical pretty printing"
fi

dnl Doing substitutions
AC_SUBST(LDFLAGS)
AC_SUBST(CPPFLAGS)
AC_OUTPUT(Makefile src/Makefile)


# ======================================================================================
dnl VERY IMPORTANT
dnl during migration from fedora 10 to 11, i got some troubles when recompiling my fadalib. I got these errors:

# ../libtool: fork: retry: Resource temporarily unavailable
#../libtool: line 2097: Xdsf: command not found
#../libtool: line 2105: mkdir /.libs: No such file or directory
#mkdir: cannot create directory `/.libs': Permission denied

dnl This error can be fixed by turning "$echo" into "$ECHO" in the "ltman.sh" file
# ======================================================================================