#####################################################################
# Standard routine for finding $$package
#
# source: $$filename 
#####################################################################
if test x$enabled_$$package_esc = xyes
then
  if test x$found_$$package_esc = xno
	then
	found=1
	for file in $$headers{$$package}
	do
		AC_CHECK_HEADER($subdir$file,[filefound=1],[filefound=0])
		AC_MSG_CHECKING([$file for $$package in standard locations])
		if test $filefound = 1
		then
			AC_MSG_RESULT([yes])
		else
	    AC_MSG_RESULT([no])
	    found=0
		fi
	done
	if test $found = 0
	then
		if test x$$header_dir{$$package} != x
		then
			found=1
			for file in $$headers{$$package}
			do
				AC_CHECK_HEADER($$header_dir{$$package}/$file,[filefound=1],[filefound=0])
				AC_MSG_CHECKING([$file for $$package in directory $$header_dir{$$package} in standard locations])
				if test $filefound = 1
				then
					AC_MSG_RESULT([yes])
				else
	    		AC_MSG_RESULT([no])
	    		found=0
				fi
			done
			if test $found = 1
			then
				include_dirs_$$package_esc="$$header_dir{$$package}"
				echo $include_dirs_$$package_esc
			fi
		fi
	fi
	AC_MSG_CHECKING([[$$package header(s) found in standard locations]])
	if test $found = 1
	then
		AC_MSG_RESULT([yes])
		if test x"$$libs{$$package}" != x
		then
			LIBS=
			old_CXXFLAGS=$CXXFLAGS
			old_LDFLAGS=$LDFLAGS
			for tmp in $include_dirs_$$package_esc
			do
				CXXFLAGS="$CXXFLAGS -I$tmp"
			done
			for tmp in $lib_dirs_$$package_esc
			do
				LDFLAGS="$LDFLAGS -L$tmp"
			done
			AC_MSG_CHECKING([libraries needed for $$package])
			AC_COMPILE_IFELSE(
			[
				AC_LANG_SOURCE(
[[
$$source{$$package}
]]	
			)],[
				links_ok=0
				tmp_libs=""
				sep=""
				for tmp in $$libs{$$package}
				do
					LDFLAGS="$LDFLAGS -l$tmp"
					tmp_libs="$tmp_libs$sep$tmp"
					sep=" "
					AC_LINK_IFELSE(
					[
						AC_LANG_SOURCE(
[[
$$source{$$package};
]])	
					],[
						links_ok=yes
					],[
					]
					)
					if test x$links_ok = xyes; then
						break 2
					fi
				done
				if test x$links_ok = xyes; then
					libs_$$package_esc=$tmp_libs
					found_$$package_esc=yes
					AC_MSG_RESULT([$libs_$$package_esc])
				else
					# trying alternative libs
					LDFLAGS=$old_LDFLAGS
					tmp_libs=""
					sep=""
					for tmp in $$alt_libs{$$package}
					do
						LDFLAGS="$LDFLAGS -l$tmp"
						tmp_libs="$tmp_libs$sep$tmp"
						sep=" "
						AC_LINK_IFELSE(
						[
							AC_LANG_SOURCE(
[[
$$source{$$package};
]])	
						],[
							links_ok=yes
						],[
						]
						)
						if test x$links_ok = xyes; then
							break 2
						fi
					done
					if test x$links_ok = xyes; then
						libs_$$package_esc=$tmp_libs
						found_$$package_esc=yes
						AC_MSG_RESULT([$libs_$$package_esc])
					else
						AC_MSG_RESULT([linking failed])
					fi
				fi
			],[
				AC_MSG_RESULT([compilation failed])
			])
			CXXFLAGS=$old_CXXFLAGS
			LDFLAGS=$old_LDFLAGS
		else
			# no libs to checks
			found_$$package_esc=yes
		fi
	else
	    AC_MSG_RESULT([no])
	    found_$$package_esc=no
	fi
    fi
fi