I have tried to compile glibc 2.6.1. Compilation completes successfully, but "make check" fails with this error message:

make[2]: *** [/root/glibc/glibc-2.6.1-build/math/test-double.out] Error 1
make[2]: Leaving directory `/root/glibc/glibc-2.6.1/math'
make[1]: *** [math/tests] Error 2
make[1]: Leaving directory `/root/glibc/glibc-2.6.1'
make: *** [check] Error 2

Any suggestions?

You'll never complete the test suite without error. Execute the test suite thuslyThe glibc math tests sometimes fail. Certain optimization settings are known to be a factor. Rethink your optimizations (if any). It may be that your gcc was built with i386 as the minimum target and you're building glibc on a >=i486 machine. That has caused problems with glibc's test-double failing.

Did you look at the file /root/glibc/glibc-2.6.1-build/math/test-double.out to see what the problem is? Try executing just the failed test with --verbose=2 and check the values.

Also, why are you building software as root?

Regarding why build as root, I don't know? I agree it's silly, but have been quite sick this week and the thought didn't occur to me. (It's a home PC incidentally)

I have solved the test failing by using -march=i586, which is what this version of suse was compiled as.

I now get this:
make[2]: *** [/home/king/glibc/build/dlfcn/bug-atexit3.out] Error 1
make[2]: Leaving directory `/data/home/king/glibc/glibc-2.6.1/dlfcn'
make[1]: *** [dlfcn/tests] Error 2
make[1]: Leaving directory `/data/home/king/glibc/glibc-2.6.1'
make: *** [check] Error 2
king@speedy:~/glibc/build> less /home/king/glibc/build/dlfcn/bug-atexit3.out
dlopen failed: libstdc++.so.6: cannot open shared object file: No such file or directory

How do I run a specific test? Also, make doesn't accept --verbose as a command flag.

Thanks for your help!

What difference does it make if it's a home PC? I still lock the doors and windows to my home.

You should build glibc by passing --with-arch=i486 to the configure script not adding -march=i586 to the CFLAGS. To execute just a specific test, for example this new failed test, you wouldThat will only run the tests found in the Makefile in /home/king/glibc/build/dlfcn.

As far as the bug-atexit3 test, I would ignore it (was it the only error you got?) and continue.