#####################################################################
# Standard routine for finding $$package
#
# source: $$filename 
#####################################################################

if test x$enabled_$$package_esc = xyes
then
	if test x$found_$$package_esc = xno
	then
		AC_ARG_WITH([qtdir], [  --with-qtdir=DIR        Qt installation directory [default=$QTDIR]], QTDIR=$withval)
		dirs="$sandbox_location/qt3/include /usr/include/qt3"
		if test x$QTDIR != x
		then
			QTDIR=`echo $QTDIR | sed -e 's=/$=='`
			dirs="$QTDIR/include $dirs"
		fi
		for sub1 in /usr/lib /usr/share /usr/local /usr/local/lib /usr/local/share /opt
		do
			for sub2 in qt3 qt31 qt32 qt33
			do
				dirs="$dirs $sub1/$sub2/include"
			done
		done
		for dir in $dirs
		do
			found=1
			for file in $$headers{$$package}
			do
				if test ! -f $dir/$file
				then
					found=0
					break 1
				fi
			done
			if test $found = 1
			then
				break 1
			fi
		done
		AC_MSG_CHECKING([[$$package header(s) found]])
		if test $found = 1
		then
			AC_MSG_RESULT([yes: $dir])
			include_dirs_$$package_esc=$dir
			lib_dirs_$$package_esc=`echo $dir | sed -e 's=/include=/lib='`
			if test x"$dir" == x"$QTDIR/include"
			then
				setenv DYLD_LIBRARY_PATH "$DYLD_LIBRARY_PATH:$lib_dirs_$$package_esc"
			        setenv LD_LIBRARY_PATH "$DYLD_LIBRARY_PATH"
				AC_MSG_NOTICE([LD_LIBRARY_PATH / DYLD_LIBRARY_PATH is now $DYLD_LIBRARY_PATH])

			fi
			AC_MSG_RESULT([yes: $dir, assuming lib-dir $lib_dirs_$$package_esc])
			if test x"$$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_$$package_esc])
					else
						# trying alternative libs
						LDFLAGS=$old_LDFLAGS
						tmp_libs=""
						sep=""
						for tmp in $lib_dirs_$$package_esc
						do
							LDFLAGS="$LDFLAGS -L$tmp"
						done	
						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
	else
		AC_MSG_RESULT([no])
	fi
fi