How to compile 32bit code

I am using RHEL 7.0

I have downloaded latest version of Eclipse cdt.

I try to compile some 32bit c++ code.
I have installed the "*-devel.i686"-packets

I have set "-m32" at the compiler options and set -melf_i386

During linking build system tries to link against libraries at /usr/lib/gcc/x86_64-redhat-linux

I have tried to set the variables "LD_LIBRARY_PATH" and "LIBRARY_PATH" under "envirement" both to "/usr/lib" without any effect

I have added "-L/usr/lib" and "-L/lib" to the linker.
Now I still have a problem with crtl.o, crti.o, crtbegin.o, crtend.o and crtn.o
I see that eclipse try to link against versions in "/lib/../lib64"

Is there any other general way to set the libraries to 32bit?
Do I have to install any additional packets?

I was able to reproduce the same behaviour under command line:

dirk1.o and dirk2.o are compiled with "-m32"

g++ -Xlinker -melf_i386 -Xlinker -L/usr/lib -Xlinker -L/lib -Xlinker -L/usr/lib/gcc/x86_64-redhat-linux/4.8.2/32 -L/usr/lib -L/lib dirk1.o dirk2.o -o dirk -L/usr/lib/gcc/x86_64-redhat-linux/4.8.2/32

/bin/ld: i386:x86-64 architecture of input file

/usr/lib/gcc/x86_64-redhat-linux/4.8.2/../../../../lib64/crt1.o' is incompatible with i386 output

/bin/ld: i386:x86-64 architecture of input file

/usr/lib/gcc/x86_64-redhat-linux/4.8.2/crtbegin.o' is incompatible with i386 output

/bin/ld: i386:x86-64 architecture of input file

Any ideas are welcome.

Dirk