Re: [Flightgear-devel] Fixes for parallel/SMP make compilation
Kain wrote: I've libtoolized the makefiles for current CVS for SimGear and FlightGear. This allows GNU make to properly handle the dependencies for SMP (parallel) compile. This naturally speeds up compiles significantly. Does anyone want the diffs? Do you use libtool to generate shared object libraries, or juts static libraries? People have pointed out that using shared objects in C++ doesn't work all that great, especially in a development environment (like FlightGear). If this patch generates static libraries I don't see a problem. It might even be used to generate one statically linkable libsimgear file instead of 17 different libraries. But that is open for discussion. Erik ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Fixes for parallel/SMP make compilation
Good Day Kian Please sent me your diffs Thanx in advance Roman ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Fixes for parallel/SMP make compilation
On Thu, Dec 05, 2002 at 10:43:28AM +0100, Erik Hofman wrote:
Do you use libtool to generate shared object libraries, or juts static
libraries? People have pointed out that using shared objects in C++
doesn't work all that great, especially in a development environment
(like FlightGear).
If this patch generates static libraries I don't see a problem.
It might even be used to generate one statically linkable libsimgear
file instead of 17 different libraries. But that is open for discussion.
With libtool all you have to do to have it generate only static libraries is
to specify
libblah_blah_la_LDFLAGS = -static
in the Makefile.am. This is what the patch does... You then want to replace all the
link-time references (blah_LDADD = ../libblah/blah.a) with (blah_LDADD =
../libblah/blah.la).
--
Bryon Roche
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Re: [Flightgear-devel] Fixes for parallel/SMP make compilation
Kain writes: I've libtoolized the makefiles for current CVS for SimGear and FlightGear. This allows GNU make to properly handle the dependencies for SMP (parallel) compile. This naturally speeds up compiles significantly. Does anyone want the diffs? Bryon, It would be interesting to see how you set up the library dependencies to allow for parallel compiling, however as Erik suggested, we have made the decision not to use libtool. Part of the reasoning is that with C++ libs, you can get bit by C++'s name mangling if you build the lib with a different version of the compiler than you build the final app. People are running into this all the time with metakit and you get strange link failures. We did have everything libtoolized at one point and from a management it ended up being a lot more hassle than it's worth. The simgear/flightgear libs are so closely tied that you rally get little benefit from making the shared. Regards, Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities[EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
PATCH for Parallel make on SimGear Flightgear (Re: [Flightgear-devel] Fixes for parallel/SMP make compilation)
On Thu, Dec 05, 2002 at 06:21:59AM -0600, Curtis L. Olson wrote:
We did have everything libtoolized at one point and from a management
it ended up being a lot more hassle than it's worth. The
simgear/flightgear libs are so closely tied that you rally get little
benefit from making the shared.
Libtool just has better dependency handling than straight Automake. You can tell
libtool to make static libraries only, which I have done.
The patches are up at http://noir.kain.org/fg/, against SimGear-0.3 CVS and
FlightGear-0.9 CVS as of 05 Dec 2002 16:03:11 -0600 or so.
--
Bryon Roche
Professional {Developer,Guru,Mad Scientist}
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[Flightgear-devel] Fixes for parallel/SMP make compilation
I've libtoolized the makefiles for current CVS for SimGear and FlightGear. This
allows GNU make to properly handle the dependencies for SMP (parallel) compile.
This naturally speeds up compiles significantly. Does anyone want the diffs?
--
Bryon Roche
Professional {Developer,Guru,Mad Scientist}
[EMAIL PROTECTED]
PGP Key Fingerprint: FE0D EC23 6464 726A CD54 48D3 04AD 86FE 6878 ABD5
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