On 2012-03-07 01:47, Jonathan M Davis wrote:
On Tuesday, March 06, 2012 11:31:40 Jacob Carlborg wrote:
On 2012-03-06 08:56, Jonathan M Davis wrote:
On Tuesday, March 06, 2012 08:29:53 Jacob Carlborg wrote:
On 2012-03-06 02:21, Jonathan M Davis wrote:
On Tuesday, March 06, 2012 01:53:02 Zach the Mystic wrote:
Reading the documentation about compiler options and flags here:
http://dlang.org/dmd-osx.html
led me to believe that building libraries was the right way to do
incremental compilation. But I thought, well, can I just build
file1.o object files instead?
So I've started doing that and I've got no problems so far. I
guess I don't need all that fancy .lib and -L-lmyLib stuff after
all. You can pack all sorts of stuff into a file1.o file instead.
I guess I solved my problem for now. Hopefully I'm making sense.
Libraries are not intented for incremental compilation. They are for
distributing code in a unit which can be used by programs. And in the
case
of a shared library, it gives the added benefit of reducing the amount
of
duplicate code you get in binaries (saving both memory and disk space).
If you want to do incremental compilation, then use -c to generate
object
files that you link together when you create the actual executable.
- Jonathan M Davis
Actually the -lib switch might be the answer to one of the incremental
compilation problems DMD suffers from. That DMD usually does not output
all symbols to all object files which can result in missing symbols when
doing incremental compilation. I've heard that the when using the -lib
flag DMD will output all symbols to all object files.
If so, it's an implementation issue. In principle, libraries have nothing
to do with incremental compilation. They're about modularizing code for
reusability.
- Jonathan M Davis
Yes, but Walter doesn't seem to want to fix that issue.
Well, from the sounds of it, he's going to need to be convinced one way or
another - which can be frustratingly difficult at times. Sometimes, he's right
even when pretty much no one agrees with him, but other times, he just doesn't
seem to get it. He's hard to convince in either case though.
- Jonathan M Davis
If I recall correctly, he mentioned some issues with COMDAT. Here is the
full discussion:
http://www.digitalmars.com/d/archives/digitalmars/D/Incremental_compilation_with_DMD_96138.html
Mentions something about COMDAT:
http://www.digitalmars.com/d/archives/digitalmars/D/Incremental_compilation_with_DMD_96138.html#N96197
--
/Jacob Carlborg
