4.5 regular build for 64-bit (x86_64): trouble with GLIBC_2.11

[jdelia at intec dot unl dot edu dot ar]

Dear gfortran developers,

Last night I tried to install the (experimental) Gfortran 4.5 release  
in an Intel Xeon machine:

# cat /proc/version
Linux version 2.6.24 (gcc version 4.3.0 20080428 (Red Hat 4.3.0-8)  
(GCC) ) #1 SMP Thu Nov 20 13:21:28 ARST 2008

# cat /proc/cpuinfo
vendor_id	: GenuineIntel
cpu family	: 6
model		: 15
model name	: Intel(R) Xeon(R) CPU           E5335  @ 2.00GHz
cpu MHz		: 1995.000
cache size	: 4096 KB
siblings	: 4
cpu cores	: 4
cpuid level	: 10
wp		: yes
bogomips	: 3992.34
clflush size	: 64
cache_alignment	: 64
address sizes	: 38 bits physical, 48 bits virtual
...


After the 64-bit AMD-compatible processors (x86_64) compiler is installed from

http://users.physik.fu-berlin.de/~tburnus/gcc-trunk/gcc-trunk-x86_64.tar.gz

$ which gfortran
/usr/local/gfortran/bin/gfortran

there is a trouble with the missing library:

$ gfortran --version
gfortran: /lib64/libc.so.6: version `GLIBC_2.11' not found (required  
by gfortran)

However,

# yum install glib
Loaded plugins: refresh-packagekit
Excluding Packages in global exclude list
Finished
Setting up Install Process
Parsing package install arguments
Package 1:glib-1.2.10-29.fc9.x86_64 already installed and latest version
Nothing to do

# yum install glib2
Loaded plugins: refresh-packagekit
Excluding Packages in global exclude list
Finished
Setting up Install Process
Parsing package install arguments
Package glib2-2.16.6-3.fc9.x86_64 already installed and latest version
Nothing to do




Please, how can fix this problem?

Regards,
Jorge.
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