I am trying to build HPC High Performance Linpack .

I have figured out how to build it on SUSE. On Suse I must build
a complete gcc 4.6.2 compiler from the ground up. Then ACML,
openMPI, and HPL.

When I build gcc, for each package I run configure with these arguments:
parentDir=where I want to put it like /opt or /usr/local
export LD_LIBRARY_PATH="$parentDir/lib:/usr/local/lib:/lib"
export PATH=$parentDir/bin:$PATH
dirArgs="--prefix=$parentDir --exec-prefix=$parentDir"
gmpArgs="--with-gmp-include=$parentDir/include/ --with-gmp-lib=$parentDir/lib"
The dirArgs are used for every package, the gmpArgs are used only for
the packages that need GMP.

I have a problem compiling HPL under RedHat:

1. If I try compiling in the same way I do under SUSE, I see
"cannot find crti.o" and "cannot find crtn.o" from
$parentDir/x86_64-unknown-linux-gnu/bin/ld

but there is a crti.o and crtn.o in
/usr/lib/x86_64-redhat-linux5E/lib64

I suspect gcc is trying to compile 32 bit even though I used
this command when configuring gcc:
./configure --prefix=$parentDirectory --exec-prefix=$parentDirectory \
--with-gmp-include=$parentDirectory/include/ --with-gmp-lib=$parentDirectory/lib --with-multilib-list=m64

2. So then I tried compiling libc where I get this error:
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find crt1.o: No such file or directory
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find crti.o: No such file or directory
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find crtbegin.o: No such file or directory
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find -lgcc
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find -lgcc_s
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find -lgcc
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find -lgcc_s
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find crtend.o: No such file or directory
$parentDir/x86_64-unknown-linux-gnu/bin/ld: cannot find crtn.o

And try as I might I can't seem to find a crtl.asm crti.asm
crtend.asm for X86_64 or in my case AMD Opteron.

What do I do next?

Thanks

I am not even sure you can build gcc 4.6 on the older RHEL5 ( assuming it is from "/usr/lib/x86_64-redhat-linux5E/lib64" )

on your system run
you are paying for red hat support so have you asked them ?

try searching gcc 4.6 on the rhn Knowledge base
https://access.redhat.com/knowledge/search

an old CentOS 5 forum post
https://www.centos.org/modules/newbb...topic_id=30110

rpm-q --requires gcc shows:

[root@RHEL6-U2-amd64 Desktop]# rpm -q --requires gcc
/bin/sh
/bin/sh
/bin/sh
/sbin/install-info
/sbin/install-info
binutils >= 2.19.51.0.14-33
cloog-ppl >= 0.15
cpp = 4.4.6-3.el6
glibc-devel >= 2.2.90-12
libc.so.6()(64bit)
libc.so.6(GLIBC_2.11)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libc.so.6(GLIBC_2.7)(64bit)
libgcc >= 4.4.6-3.el6
libgcc_s.so.1()(64bit)
libgomp = 4.4.6-3.el6
libgomp.so.1()(64bit)
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PartialHardlinkSets) <= 4.0.4-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(VersionedDependencies) <= 3.0.3-1
rtld(GNU_HASH)
rpmlib(PayloadIsXz) <= 5.2-1

So what do I do with this information?

I got the login info yesterday so I will ask Red Hat.

rpm -q --requires gcc tells what other packages are used by the gcc package. This implies that if one was to change the version of gcc, then this change would affect and possibly break all the other packages.

In my case I am building gcc 4.6.2 in a separate directory and therefore if I am careful I only affect those packages that refer to this new, separate directory.

Thanks for your help