Le samedi 24 novembre 2012 07:15:33, Isaac Dunham a écrit :
On Fri, 23 Nov 2012 21:10:33 +0100
Florian Fainelli flor...@openwrt.org wrote:
Hi All,
Support for musl libc in OpenWrt has been added in revision r34314,
Glad to hear it!
Note that the following issues are known:
- unable to complete libstdc++ build due to some missing declarations
(WIP)
Are you using the default linux-gnu libstdc++, or the generic target?
Only the latter is known to work at this point.
It is the linux-gnu libstdc++, we do not support building the generic one
yet, might be worth supporting it now.
- MIPS and MIPSel ports are not functionnal (details below)
--
MIPS and MIPSel specific issues:
using qemu's binary emulation (qemu-mips[el]) against a statically
linked binary works, a dynamic binary makes my host qemu segv. Using
qemu-system-mips[el], the binary segfaults while being executed by the
kernel. So far I have not had the time to debug this further.
There are likely other issues, but are you using a hardfloat-compatible
kernel (FPU emulation enabled)?
No, we have patched the kernel do disable the hardware FPU emulation, which
was actually the issue, because musl setjmp MIPS-specific code tried to access
Cop1 registers. After patching setjmp not to access these it works flawlessly
on MIPS (big-endian) but MIPS (little-endian) still segfaults while being
executed either from the kernel or qemu-mipsel.
At present, musl/mips relies on certain
instructions that the kernel ordinarily emulates when they aren't
supported.
You mean ll/sc right? I build for MIPS32r2 so this should not be an issue.
--
Florian
___
openwrt-devel mailing list
openwrt-devel@lists.openwrt.org
https://lists.openwrt.org/mailman/listinfo/openwrt-devel
