Bugs item #1827627, was opened at 2007-11-07 16:49
Message generated for change (Comment added) made by stmane
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Category: Build
Group: buildtools CVS Head
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Marcin Zukowski (e-r00)
Assigned to: Sjoerd Mullender (sjoerd)
Summary: --enable-bits doesn't work with icc
Initial Comment:
--enable-bits is still in configure and HowToStart.
However, it doesn't seem to work with icc.
So either some fixes are needed to guarantee it does what a user expects, or
prints a fail message, or it should be removed.
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>Comment By: Stefan Manegold (stmane)
Date: 2007-11-07 18:22
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[on our desktops at CWI]
$ icc --help | egrep '32|64'
while also generating generic IA-32 code. <codes> includes
320 - gcc 3.2.x compatibility
-Wp64 print diagnostics for 64-bit porting
-W[no-]shorten-64-to-32
warn for values implicitly converted from a 64-bit to
a 32-bit type. Similar to -Wp64
extended - rounds intermediates in 64-bit (extended)
precision
-pc32 set internal FPU precision to 24 bit significand
-pc64 set internal FPU precision to 53 bit significand
-pc80 set internal FPU precision to 64 bit significand (DEFAULT)
-auto-ilp32 specify that the application cannot exceed a
32-bit
$ type -a icc
icc is /usr/local/bin/icc
$ ls -l /usr/local/bin/icc
/usr/local/bin/icc -> /soft/64/icc-10.0.023/bin/icc*
$ ls -l /soft/64/icc-10.0.023/bin/icc
/soft/64/icc-10.0.023/bin/icc*
$ ls -l /soft/32/icc-10.0.023/bin/icc
/soft/32/icc-10.0.023/bin/icc*
$ cat > hello.c
#include <stdlib.h>
#include <stdio.h>
int main () {
printf("Hello\n");
return 0;
}
$ /soft/64/icc-10.0.023/bin/icc -o hello hello.c ; file hello ; ./hello
hello: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically
linked (uses shared libs), for GNU/Linux 2.6.9, not stripped
Hello
$ /soft/32/icc-10.0.023/bin/icc -o hello hello.c ; file hello ; ./hello
hello: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped
Hello
In other words, icc does not seem to offer a commandline swithc to enable
32-bit compilation.
But .../configure CC=/soft/32/icc-10.0.023/bin/icc might do the job...
----------------------------------------------------------------------
Comment By: Marcin Zukowski (e-r00)
Date: 2007-11-07 18:00
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Of course:
[17:58:51 [EMAIL PROTECTED]
/export/scratch0/marcin/BUILD/MonetDB-icc-DBGXPROF-32-32/src/gdk/.libs
$ grep 'CC=icc' ../../../config.log
$ /ufs/marcin/monet/MonetDB/configure CC=icc
--prefix=/ufs/marcin/local/monet-icc-DBGXPROF-32-32 --enable-bits=32
--enable-oid32 --disable-profile --without-java --without-bz2
--enable-debug --disable-optimize
$ file libbat_la-gdk_align.o
libbat_la-gdk_align.o: ELF 64-bit LSB relocatable, x86-64, version 1
(GNU/Linux), not stripped
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Comment By: Fabian (mr-meltdown)
Date: 2007-11-07 17:44
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does file(1) actually agree that it is a 64-bits binary?
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Comment By: Stefan Manegold (stmane)
Date: 2007-11-07 17:27
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No, I didn't know that --- actually I did not even know what platform you
were using (I could have guessed but we do have more than one at CWI ...).
Given the CPU you specify, I now *guess* you're referring to our FC6
desktops at CWI and to icc 10.0, right?
Well, I am actually not sure whether (1) "our" icc 10.0 allows to produce
32-bit binaries on our 64-bit FC6 desktops, (2) the correct option to do
this is set (added to $CC) in buildtools/conf/MonetDB.m4, (3) our 64-bit
FC6 comes with all the 32-bit libraries to actually get a 32-bit MonetDB
compiled successfully, (4) it would work with gcc.
In any case I agree with Marcin that the current behavior of silently
ignoring --enable-bits=32 (with icc on our 64-bit FC6 machines) is not the
desired one.
(Who ever will take care of this one may consider the above as hint where
to start the investigation.)
----------------------------------------------------------------------
Comment By: Marcin Zukowski (e-r00)
Date: 2007-11-07 17:12
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I'm sure you know, but if you insist :)
On Athlon 64 X2, "--enable-bits=32" with icc it compiles into 64-bit
binaries.
I don't even know if icc supports that, but I was simply suprised to get a
64-bit thing.
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Comment By: Stefan Manegold (stmane)
Date: 2007-11-07 17:01
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"does not seem to work" as in (1) "does not have any effect" or (2)
"results in an error" or (3) "..."?
It --- to be precise one of "--enable-bits=32", "i--enable-bits=64" --- is
(IMHO) still supposed to work ...
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