[MacPorts] #13335: python25 is compiled without optimization, 2x slower on mac os 10.5, others?

18 Nov 2007

      #13335: python25 is compiled without optimization, 2x slower on mac os 10.5,
others?
---------------------------+------------------------------------------------
 Reporter:  bulk@modp.com  |       Owner:  macports-dev@lists.macosforge.org
     Type:  defect         |      Status:  new                              
 Priority:  High           |   Milestone:                                   
Component:  ports          |     Version:  1.5.2                            
 Keywords:                 |  
---------------------------+------------------------------------------------
 Hiya,

 while installing python2.5 on my system, I happened to notice that I
 didn't see the usual "-O2" option while gcc was compiling files.  THen I
 had a small benchmark program, and yes, it runs 2x slower than 10.5
 /usr/bin/python on Mac OS 10.5.1

 DEBUG: Environment: CXXFLAGS='-O2' CPPFLAGS='-I/opt/local/include'
 CFLAGS='-O2'

 but...

 gcc -c -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-
 madd -DNDEBUG -D__DARWIN_UNIX03  -I. -I./Include -I/opt/local/include
 -DPy_BUILD_CORE -o Parser/parser.o Parser/parser.c
 (to use one example)

 I looked into the portfile

 platform darwin 9 {
     configure.post_args-append  OPT="-D__DARWIN_UNIX03"
 }

 I think this may be clobbering the CFLAGS def.  I added

 platform darwin 9 {
     configure.post_args-append  OPT="-O3 -D__DARWIN_UNIX03"
 }

 and it compiles correctly (but I need to remove and then install
 everything).  I'm pretty sure there must be a way of reading $CFLAGS from
 the env, but I don't know enough about TCL (I tried $::env(CFLAGS), nope)
 or MacPorts to know.

 WIth -O3, macports python runs about 10% faster than the Mac 10.5.1 python

 thanks.

 --nickg

-- 
Ticket URL: <https://svn.macosforge.org/projects/macports/ticket/13335>
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