helpme.how to compile 32bit programs in 64bit environment

[netmeteor]

a mechine with Xeon64 cpu, kernel is 2.4.29. i want to compile 32bit programs. i try with gcc option -m32. but it fails when link. althought in makefile i design the lib to be /lib and /usr/lib.

please give me some hint, thanks

[Morgoth]

What is the error message the linker gives?

[netmeteor]

when make, the warning message is:
/usr/bin/ld: warning: i386 architecture of input file `lv_create_node.po' is incompatible with i38686-64
output

error message is:

/LVM/tools/e2fsadm.c:380: undefined reference to `__moddi3'
e2fsadm.o(.text+0xb54):/LVM/tools/e2fsadm.c:391: undefined reference to `__moddi3'
e2fsadm.o(.text+0xebb):/LVM/tools/e2fsadm.c:514: undefined reference to `__divdi3'
e2fsadm.o(.text+0x1393):/LVM/tools/e2fsadm.c:442: undefined reference to `__divdi3'
collect2: ld returned 1 exit status

[Morgoth]

Do you have 32-bit libraries on your machine?
And did you tell the compiler that it should look for the libraries where you have placed them?

[netmeteor]

when i install linux, i choose to support ia32 emulation in kernel. and i found /lib and /usr/lib directories which said to be 32bit libs. In makefile, i think it designates the compiler to use 32bit lib.
the segment of makefile is:
prefix = /usr
exec_prefix =
bindir = ${exec_prefix}/bin
staticlibdir = ${prefix}/lib
libdir = ${exec_prefix}/lib
sbindir = ${exec_prefix}/sbin
infodir = ${prefix}/info
mandir = ${prefix}/man
topobjdir = /LVM
# setup misc variables
# define the ownership variables for the binaries and man pages
OWNER=root
GROUP=root

# The number of jobs to run, if blank, defaults to the make standard
ifndef MAKEFLAGS
MAKEFLAGS =
endif

.SUFFIXES =
.SUFFIXES = .o.po.c

%.a: %.o
$(AR) -r $@ $<

%.o: %.c
$(CC) -c -pipe $(CFLAGS) -o $@ $<

%.po: %.c
$(CC) -c -pipe $(CFLAGS) -fPIC -o $@ $<

%: %.o $(LIBS)
$(CC) $(LDFLAGS) $< $(LOADLIBES) $(LDLIBS) -o $@

[scientica]

I think a 32-bit chroot enviroment is what you should use for compiling 32-bit apps, not sure how to do it on Xenon64's but, for AMD64s there's ahow to in the Tech. notes in gentoo.

[netmeteor]

my distro is fedora core 3, how to use the chroot environment i know nothing about that. no other choice?