Fix issue of fault to build for ubunutu. - make build shape_path.c before generate precomputed.h while shape_path.c need it. - It is fixed by moving both precomputed.c & precomputed.h to BUILT_SROUCES. - see http://www.gnu.org/software/automake/manual/\ automake.html#Built-Sources-Example

divert([-1])

define([_arg1], [$1])

define([_foreach], [ifelse([$2], [()], [],
[define([$1], _arg1$2)$3[]_foreach([$1], (shift$2), [$3])])])

define([foreach], [pushdef([$1])_foreach($@)popdef([$1])])

divert[]dnl