Specifying VPF instructions for ARM?

[Jeff Gold <jgold at us dot ncipher dot com>]

I'm using GCC to cross compile code for ARM but am running into trouble 
with floating point formats.  The ARM architecture seems to have two 
kinds of instructions for floating point emulation, VFP and FPA, and 
these cannot be mixed within an executable.  Some versions of GCC seem 
to produce one kind and some produce the other.  This proves to be a 
problem when attempting to link libraries and executable object files 
created with different GCC installations.

I have studied the description of ARM specific GCC options in the 
texinfo page and searched both google and the gcc-help list archives. 
Nothing I've found seems to indicate how to ask GCC to use a particular 
floating point format.  Have I missed something?  Is there an option one 
can pass to configure when building the cross compiler that will choose 
one format or the other?  Any suggestions would be appreciated.

I use the same CFLAGS for compiling object files for the library and the 
executable, but different GCC versions.  The errors occur at link time 
and look like this:

xscale-elf-gcc -O3 -Wall -Wpointer-arith -Wwrite-strings \
  -Wstrict-prototypes -Wmissing-prototypes -Werror \
  -mapcs-32 -msoft-float -mlittle-endian -mcpu=strongarm \
  -nostdinc -fno-builtin \
  -I/path/to/headers -I. -o program.o -c ./program.c
xscale-elf-gcc -O3 -Wall -Wpointer-arith -Wwrite-strings \
  -Wstrict-prototypes -Wmissing-prototypes -Werror \
  -mapcs-32 -msoft-float -mlittle-endian -mcpu=strongarm \
  -nostdinc -fno-builtin \
  -I/path/to/headers -I. -o utilities.o -c ./utilities.c
xscale-elf-ld -warn-common -nostdlib -Ttext 0x800000 -Tdata 0x900000 \
  -o program.elf program.o utilities.o \
  /path/to/libs/libsomething.a
xscale-elf-ld: ERROR: /path/to/libs/libsomething.a(one.o) uses VFP 
instructions, whereas program.elf does not
File format not recognized: failed to merge target specific data of file 
/path/to/libs/libsomething.a(one.o)
xscale-elf-ld: ERROR: /path/to/libs/libsomething.a(two.o) uses VFP 
instructions, whereas program.elf does not
File format not recognized: failed to merge target specific data of file 
/path/to/libs/libsomething.a(two.o)