Thread (10 messages) flat view 10 messages, 4 authors, 2001-08-17

Re: init fails w/ new build of gcc & glibc

From: Dr. Craig Hollabaugh <hidden>
Date: 2001-08-17 22:16:45

At 04:48 PM 8/17/2001 -0500, Mark Hatle wrote:
If the answer is that it is standard floating point then you can use the
"7xx" or "82xx" tools for your project.  If you want to recompile then
you need to recompile the whole system from the compilers up to glibc
and all of the apps.  There are two ABIs, one for soft-floating point
and one for hard floating point.  They are not run-time compatable.
Mark,

You mentioned these two exclusive ABIs a couple days ago. If you want to compile the toolchain and the kernel correctly to insure run-time compatibility (in my case for 8xx), would you do this

for kernel fp emulation
compile kernel with CONFIG_MATH_EMULATION=y, (do you use -msoft-float while compiling kernel?)
then compile the toolchain without -msoft-float

or

for soft-floating point - no kernel emulation
compile kernel CONFIG_MATH_EMULATION is not set (do you use -msoft-float while compiling kernel?)
then compile the toolchain with -msoft-float


Very very curious
Thanks
Craig


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