http://d.puremagic.com/issues/show_bug.cgi?id=9896
Summary: Implement -rb switch for recursive build and -rx
switch for exclusion lists
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P2
Component: DMD
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Andrej Mitrovic <[email protected]> 2013-04-07
06:15:57 PDT ---
DMD automatically tracks imports and loads all dependent modules that a source
module needs. By taking advantage of this we can speed up the build time of a
project and simplify the build script. See the discussion[1] in the forums.
-rb will be used to make DMD build all modules which it loads.
-rx will be used to exclude modules or packages which DMD should not build when
the -rb switch is present. This will enable fast incremental builds via an
external tool such as RDMD, as such a tool will be able to exclude prebuilt
modules from being built again by passing the module names via the -rx switch,
and passing the object files instead to enable proper linking.
-rx can take a fully-qualified module declaration, or a wildcard, via:
$ dmd -rxfoo.bar
This excludes the module foo.bar
$ dmd -rxfoo.*
This excludes all modules from the package foo.
>From a few tests we saw build times improve by 30%. Adding incremental support
to RDMD (which needs these new flags) will significantly improve the build
times.
[1] :
http://forum.dlang.org/thread/[email protected]?page=4#post-kjqe9a:242fdl:241:40digitalmars.com
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