Build and use a second glibc on Linux

Hello,

I want to build and use a secondary glibc on my machine; This glibc will be used not as a default but only for special testing; I want to adhere to original glibc with usual apps-compilations.

What I did is: I ran .-configure of glibc so that my --prefix for configure glibc waswork-src-glibc-2.3.2-prefix; I ran make install and make check for glibc (both were OK).

Now I had compiled a little program (named testprintf.c) like thus:

gcc -I-work-src-glibc-2.3.2-prefix-include -g testprintf.c -nostdlib -nostartfiles -Wl,-dynamic-linker=-work-src-glibc-2.3.2-prefix-lib-ld-linux.so.2work-src-glibc-2.3.2-prefix-lib-crt1.owork-src-glibc-2.3.2-prefix-lib-crti.o -L-work-src-glibc-2.3.2-prefix-libwork-src-glibc-2.3.2-prefix-lib-libdl.so.2 -lcwork-src-glibc-2.3.2-prefix-lib-ld-linux.so.2work-src-glibc-2.3.2-prefix-lib-libcnonshared.a -lgcc `gcc --print-file-name=crtend.o`work-src-glibc-2.3.2-prefix-lib-crtn.o -o testprintf

this build succeed. I had verified that the generated executable file , testprint, is linked with the correct new glibc libraries this:

APPOLO:-work-dev-tests-misc# ldd testprintfwork-src-glibc-2.3.2-prefix-lib-ld-linux.so.2 (0x40000000)

and I am trying to run it like thus:

LDPRELOAD=-work-src-glibc-2.3.2-prefix-lib-ld-2.3.2.so LDLIBRARYPATH=-work-src-glibc-2.3.2-prefix-libwork-src-glibc-2.3.2-prefix-lib-ld-linux.so.2 .-testprintf

when I type .-run.sh I get segmentation fault and a core dump. with gdb backtracking I get the following:

bt (gdb) bt #0 0x00000000 in ?? () #1 0x080483ad in doglobalctorsaux () #2 0x08048274 in init () #3 0x0804833a in libccsuinit () at elf-init.c:60 stackend=0x8048330) at ..-sysdeps-generic-libc-start.c:139

Any idea ? what am I doing wrong here? Is there any on-line guide which shows what should be done in order to achieve my goal ?

I googled for it and the GLIBC faq did not help much nor LinuxFromScratch chapter on glibc.

Regards, John