Bug 9924 - rpm with versioned glibc on ARM systems and requires
Summary: rpm with versioned glibc on ARM systems and requires
Alias: None
Product: Red Hat Raw Hide
Classification: Retired
Component: rpm-build   
(Show other bugs)
Version: 1.0
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Jeff Johnson
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2000-03-02 21:12 UTC by Rod m. Stewart
Modified: 2008-05-01 15:37 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2001-02-21 18:58:27 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Rod m. Stewart 2000-03-02 21:12:10 UTC
The following is a problem wrt to the find-requires portion of RPM on an
armv4l Linux system, with a versioned glibc and binutils > 2.9.5.

The problem:
	objdump -p *.so |tail -n 10
gives the following on ARM:
  [root@stewart-nw11 /bin]# objdump -p /lib/libc.so.6 |tail
  6 0x00 0x09691f73 GLIBC_2.1.3

  Version References:
   required from ld-linux.so.2:
    0x09691f71 0x00 09 GLIBC_2.1.1
    0x0d696911 0x00 08 GLIBC_2.1
    0x0d696910 0x00 07 GLIBC_2.0
  private flags = 0: [interworking not enabled] [APCS-32] [floats passed in
integer registers] [absolute position]

Note the last line: "private flags = 0:"  This confuses the current
find-requires, as it assumes all the lines after "Version References:"
relate to glibc version information.  This is not always true as can be
seen below:
  [root@stewart-nw11 armv4l]# rpm -qp  --requires bzip2-0.9.5c-1.armv4l.rpm

The line: "libc.so.6(0:)" should not be listed.

The why:
linux.req script assumes there is no none version information after the
line "Version References:" from 'objdump -p', which is incorrect.

Work around:
I currently use the following work around for autodeps/linux.req
-       (START==1) && (LIBNAME!="") && ($4!="") { print LIBNAME "(" $4 ")";
+       (START==1) && (LIBNAME!="") && ($1~/^0x*/) && ($4!="") { print
LIBNAME "(" $4 ")"; }

It might be better to look for the string "GLIBC" in $4.

It would be really nice to get this fixed.

Hope it makes sense

Comment 1 Jeff Johnson 2000-04-13 10:57:59 UTC
I believe this has been fixed in rpm-3.0.4. Thanks for the analysis.

Comment 2 Rod m. Stewart 2000-11-09 23:05:59 UTC
I'd like to open this one again.

With the current approach we only get library symbols for GLIBC dependencies in
Requires.  We actually get all library symbols in the Provides script, we simply
do not add requires for them.

As such I believe my first approach of checking for "($1~/^0x*/)" instead of
GLIBC in "$4" would be better.  Sorry about the confusion.

This would help anyone doing library versioning including gcc if/when it ever
starts using a shared libgcc with symbol versioning (I'm not up to date on
whether this is still going ahead).

The only thing I would add in is to not include the symbol library symbol
'(GCC.INTERNAL)' as it does not make sense to have.
	rpm -qa --provides|grep GCC.INTERNAL
This returns lots of useless garbage.

I'd be willing to generate the proper patches for this, let me know if it makes


Comment 3 Jeff Johnson 2001-02-21 18:58:23 UTC
Changing component.

Comment 4 Jeff Johnson 2001-07-25 20:12:48 UTC
If you send me a patch against rpm-4.0.3, I'l certainly apply. However, there's
no way that I can make a change for dependency chains
on a platform I don't build on.

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