[Bug build/13717] New: ../configure --enable-kernel=2.0.0 shouldn't be possible

["ttk448 at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=13717

             Bug #: 13717
           Summary: ../configure --enable-kernel=2.0.0 shouldn't be
                    possible
           Product: glibc
           Version: 2.14
            Status: NEW
          Severity: minor
          Priority: P2
         Component: build
        AssignedTo: unassigned@sourceware.org
        ReportedBy: ttk448@gmail.com
                CC: carlos@systemhalted.org
    Classification: Unclassified


Ignoring the advice in README and trying to enable support for very old kernel
versions, it appears to work:

 ../configure --prefix=/usr/local/glibc_32  \
             --enable-kernel=2.0.0 \
             --with-cpu=i486 --host=i486-linux-gnu \
             CC="gcc -m32 -march=i486"  CXX="g++ -m32 -march=i486"
 [...]
 WARNING: minimum kernel version reset to 2.0.10
 [...]


However, when a test programme is statically linked against this glibc and
executed on an old kernel (2.2.x) it fails:

 user@newsystem:~ $ file ./prog
 ./prog: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
 statically linked, for GNU/Linux 2.0.10, not stripped

 user@oldsystem:~ $ ./prog
 set_thread_area failed when setting up thread-local storage
 Segmentation fault

So instead I guess ./configure should do something like

 WARNING: minimum kernel version reset to 2.6.0

so that the normal "FATAL: kernel too old" error message appears when executed
on any older kernel?

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