[mythtv-commits] Ticket #2994: compile error using --proc-opt in configure while using "Intel(R) Celeron(R) M processor"
MythTV
mythtv at cvs.mythtv.org
Wed Feb 21 22:09:44 UTC 2007
#2994: compile error using --proc-opt in configure while using "Intel(R)
Celeron(R) M processor"
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Reporter: anonymous | Owner: janne
Type: defect | Status: reopened
Priority: minor | Milestone: 0.21
Component: mythtv | Version: head
Severity: low | Resolution:
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Comment (by knowledgejunkie at gmail.com):
A quick update on my Intel Celeron D CPU issue - with many thanks to Simon
Kenyon on the -dev list. (Gentoo safe flags [http://gentoo-
wiki.com/Safe_Cflags#Pentium_4_.28Prescott.29_.28Intel.29] recommend
CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer" for this CPU).
Compiling with "--cpu=prescott --enable-proc-opt" allowed the MythTV core
to compile normally. I'll be monitoring for any further instability over
the next few days. I note from the output below the use of -O3 instead of
-O2 - should this extra optimisation affect anything other than code
portability? What additional effect does enabling -proc-opt have?
Sample output from the compilation (the motion_est.c file which broke
things earlier):
{{{
gcc -c -pipe -march=prescott -w -O3 -fomit-frame-pointer -Wall -Wno-switch
-fomit-frame-pointer -D_REENTRANT -DPIC -fPIC -DMMX -Di386 -D_GNU_SOURCE
-D_FILE_OFFSET_BITS=64 -DPREFIX=\"/usr\" -DLIBDIR=\"/usr/lib\"
-DHAVE_AV_CONFIG_H -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_THREAD_SUPPORT
-DQT_SHARED -I/usr/lib/qt-3.3/mkspecs/default -I. -I.. -I../..
-I../libavutil -I/usr/lib/qt-3.3/include -o motion_est.o motion_est.c
}}}
Thanks,
Nick
--
Ticket URL: <http://cvs.mythtv.org/trac/ticket/2994#comment:6>
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