Bug 58873

Summary: wrong $RPM_OPT_FLAGS on i586 systems
Product: [Retired] Red Hat Linux Reporter: Florin Andrei <florin>
Component: rpmAssignee: Jeff Johnson <jbj>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 7.2   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2002-01-26 06:38:33 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Florin Andrei 2002-01-26 06:38:28 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.7) Gecko/20020104

Description of problem:
On i586 systems (old Pentiums), rpm picks up wrong $RPM_OPT_FLAGS. It generates
"-O2 -march=i386 -mcpu=i686" when the right flags should be "-O2 -march=i386
-mcpu=i586".
I see that on my old Pentium 100 system; when i rebuild rpms that use
$RPM_OPT_FLAGS, the programs are always compiled with -mcpu=i686, instead of
-mcpu=i586

This is my system:
[root@weiqi root]# cat /proc/cpuinfo 
processor
: 0
vendor_id
: GenuineIntel
cpu family	: 5
model
	: 2
model name	: Pentium 75 - 200
stepping
: 6
cpu MHz		: 100.228
fdiv_bug
: no
hlt_bug
	: no
f00f_bug
: yes
coma_bug
: no
fpu
	: yes
fpu_exception
: yes
cpuid level	: 1
wp
	: yes
flags
	: fpu vme de pse tsc msr mce cx8
bogomips
: 199.88

[root@weiqi root]# uname -a
Linux weiqi.home.local 2.4.9-13 #1 Tue Oct 30 19:31:55 EST 2001 i586 unknown

This is what happens when i do a "rpm -ba" to the Pure-FTPd spec file:
[root@weiqi root]# cat /var/tmp/rpm-tmp.3705 
#!/bin/sh

  RPM_SOURCE_DIR="/usr/src/redhat/SOURCES"
  RPM_BUILD_DIR="/usr/src/redhat/BUILD"
  RPM_OPT_FLAGS="-O2 -march=i386 -mcpu=i686"
  RPM_ARCH="i386"
  RPM_OS="linux"


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Install RH 7.2 on an old Pentium system
2. Try to rebuild a rpm from src.rpm
3. Watch the compile flags
	

Actual Results:  The compile flags picked by rpm are "-O2 -march=i386 -mcpu=i686"

Expected Results:  The compile flags should be "-O2 -march=i386 -mcpu=i586"

Additional info:
Comment 1 Jeff Johnson 2002-01-26 09:45:04 UTC 
No, this is the correct default configuration. The -mcpu=i686
sez' optimize instruction scheduling for an i686. The produced
bits will run on an i586.