what's the usage of -flimit-inline

Wu Mingqiao mingqiao.wu@gmail.com
Tue Oct 12 13:28:00 GMT 2004

On Tue, 12 Oct 2004 16:10:26 +0800, Wu Mingqiao <mingqiao.wu@gmail.com> wrote:
> I have built a toolchain with crosstool-0.28-rc34 for arm-iwmmxt. I
> used gcc-3.4.0, glibc-2.3.2, binutils-2.14.90 and linux- kernel
> head files. I find it is needed to add
> GLIBC_EXTRA_CONFIG="--without-fp" in arm-iwmmxt.dat, or there is an
> error report: selected processor does not support "rfs r2". Then it
> progressed well.
> The toolchain can be used to compiled linux- kernel. But there
> is a weird feature about this toolchain. I built a linux-
> kernel image and busybox with it, then I run it in a xscale board, it
> always report: illegal instructions when the busybox is loaded. I
> overwrite the libc-2.3.2.so with an old one built with an old
> toolchain, then it works fine. I checked the two toolchains and found
> there is a different option in configuring GLIBC-2.3.2. The old
> toolchain uses CC="arm-linux-gcc -finline-limit=10000". After adding
> the option GLIBC_EXTRA_CC_ARGS="-finline-limit=10000" to
> arm-iwmmxt.dat, I got a new toolchain and run the kernel and busybox
> successfully.
It seems I have made a mistake. I could not repeat the process. :(
The problem is still unresolved. I don't know why the libc-2.3.2.so
causes illegal instruction.

> I could not find clear explanation about -finline-limit option with
> materials at hand. Does anybody know the usage of -flimit-inline? Any
> comment is appreciated.
> --Bridge

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