Date: Thu, 22 Oct 2015 23:18:54 +0200 From: Sebastian Gottschall <s.gottschall@...wrt.com> To: Rich Felker <dalias@...c.org>, musl@...ts.openwall.com Subject: Re: __write alias missing on arm platforms Am 22.10.2015 um 22:55 schrieb Rich Felker: > On Thu, Oct 22, 2015 at 10:21:54PM +0200, Sebastian Gottschall wrote: >> musl is missing the __write function which seem to be a alias to "write". >> this is required by libgcc on arm platforms. under some conditions >> the compiler will generate code which does reference >> this function then which leads to unresolved symbols >> (seen on squid 4.0.1 on xscale) >> >> /home/xfs/toolchains/toolchain-armeb_xscale_gcc-5.2.0_musl-1.1.11/bin/../lib64/gcc/armeb-openwrt-linux-muslgnueabi/5.2.0/libgcc.a(linux-atomic-64bit.o): >> In function `__check_for_sync8_kernelhelper': >> /home/xfs/openwrt/trunk2/trunk/build_dir/toolchain-armeb_xscale_gcc-5.2.0_musl-1.1.11/gcc-5.2.0/libgcc/config/arm/linux-atomic-64bit.c:59: >> undefined reference to `__write' >> collect2: error: ld returned 1 exit status >> l > __write is not a public API even in glibc as far as I can tell. This > looks like an abuse of an accidentally-public symbol by libgcc. For > musl target anyway it should just be patched out of libgcc, e.g. with > #ifdef. you mean i have to send a bug report to GCC maintainers? i its part if the libgcc sourcecode and is not provided by libgcc, but just referenced i checked uclibc and glibc. both define __write as alias for write just because of libgcc so lets declare musl as broken on arm if gcc is used, if this is a solution for you :-) > > Rich >
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