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Dynamic Linker



Well! I downloaded the latest glibc and working on
that. In that I want  to know the exact use of
rtld.c file. Its is in the elf directory. So what
happpends to ld.so when a make is done in elf
directory.

I inserted  my own function in rtld.c file and did
a make in elf directory.

Iam trying to call that function in one my program
located in some other directory. For that i'm
using the make file as follows

CC = gcc
CFLAGS = -Wall

all: test-ld test-reg

test.o: test.c
 gcc -c test.c

test-ld: test.o
/trutta2/srg/projects/dynamic-loader/glibc-2.2.4/elf/ld.so

 gcc
-Wl,-dynamic-linker,/trutta2/srg/projects/dynamic-loader/glibc-2.2.4/elf/ld.so
test.o -o test-ld -ldl

test-reg: test.o
 gcc test.o -o test-reg

But it gives me the following error

gcc test.o -o test-reg
test.o: In function `main':
test.o(.text+0x11): undefined reference to
`dlopen'
test.o(.text+0x41): undefined reference to
`dlerror'
test.o(.text+0x51): undefined reference to `dlsym'

test.o(.text+0x5c): undefined reference to
`dlerror'
test.o(.text+0x91): undefined reference to
`dlclose'
collect2: ld returned 1 exit status
make: *** [test-reg] Error 1


I was wondering what's happening.

If you could help in this regard It would be great
help in my project
progress.

Thanks in advance
Navin


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