Bug 81721 - AC_CHECK_SIZEOF fails with GCC 3.0.4 (Red Hat 7.2)
Summary: AC_CHECK_SIZEOF fails with GCC 3.0.4 (Red Hat 7.2)
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: autoconf
Version: 8.0
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Jens Petersen
QA Contact: Brian Brock
: 81719 (view as bug list)
Depends On:
TreeView+ depends on / blocked
Reported: 2003-01-13 11:51 UTC by Pascal Haakmat
Modified: 2007-04-18 16:49 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2003-01-13 12:37:31 UTC

Attachments (Terms of Use)
config.log for AC_CHECK_SIZEOF(int,4) run (8.67 KB, text/plain)
2003-01-13 11:53 UTC, Pascal Haakmat
no flags Details

Description Pascal Haakmat 2003-01-13 11:51:07 UTC
Description of problem:
autoconf 2.53 (as distributed with Red Hat 8) may have a bug.

Running autoconf on the following two-line configure.in:

AC_INIT(test, 0)

generates a configure script that fails on gcc 3.0.4 (as distributed
with Red Hat 7.2). config.log has been attached.

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

How reproducible:

Steps to Reproduce:
1. Create two-line configure.in as described above on a Red Hat 8 system.
2. Run 'autoconf'.
3. Move generated 'configure' script to a Red Hat 7.2 system.
4. Run './configure'.
Actual results:
checking size of int... configure: error: cannot compute sizeof (int), 77

Expected results:
checking size of int... 4

Additional info:
--- Example:
$ gcc -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.0.4/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--disable-checking --host=i386-redhat-linux --with-system-zlib
Thread model: posix
gcc version 3.0.4 (Red Hat Linux 7.2 3.0.4-1)
$ ./configure
<output deleted>
checking size of int... configure: error: cannot compute sizeof (int), 77
$ export CC=kgcc
$ kgcc -v
[p@awacs autoconf-bug]$ kgcc -v
Reading specs from
gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
<output deleted>
checking size of int... 4

Comment 1 Pascal Haakmat 2003-01-13 11:54:01 UTC
Created attachment 89333 [details]
config.log for AC_CHECK_SIZEOF(int,4) run

This is the config.log generated for AC_CHECK_SIZEOF(int,4). It makes no
difference whether the optional size parameter is used or not.

Comment 2 Pascal Haakmat 2003-01-13 11:55:10 UTC
*** Bug 81719 has been marked as a duplicate of this bug. ***

Comment 3 Pascal Haakmat 2003-01-13 12:09:46 UTC
Relevant part from the config.log:

> configure:2394: checking size of int
> configure:2672: gcc -o conftest -g -O2   conftest.c  >&5
> /tmp/cc3ItQrW.s: Assembler messages:
> /tmp/cc3ItQrW.s:416: Warning: Unrecognized .section attribute: want a,w,x
> /tmp/cc3ItQrW.s:416: Warning: Unrecognized .section attribute: want a,w,x
> /tmp/cc3ItQrW.s:416: Error: Rest of line ignored. First ignored character is
> configure:2675: $? = 1

When the '-O2' flag is removed from the compiler commandline then the test
succeeds as expected.

And sorry about the spam!

Comment 4 Pascal Haakmat 2003-01-13 12:33:56 UTC
Well, it seems my GCC 3.0.4 installation has simply become hosed overnight (?).
This bug should probably be closed.

Comment 5 Pascal Haakmat 2003-01-13 12:37:31 UTC
Please ignore this bugreport, it was a broken version of binutils.

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