Date: Fri, 10 Jun 2022 08:44:55 -0400 From: Rich Felker <dalias@...c.org> To: Ankit Paraskar <Ankit.Paraskar@....com> Cc: " musl@...ts.openwall.com" <musl@...ts.openwall.com> Subject: Re: Configuration gives error on ppc64le arch for must repo On Fri, Jun 10, 2022 at 11:14:03AM +0000, Ankit Paraskar wrote: > Dear Team, > > While trying to configure musl package on power arch(ppc64le) we are getting the below configure issue > > Reflink:- > musl - musl - an implementation of the standard library for Linux-based systems (musl-libc.org)<https://git.musl-libc.org/cgit/musl/> > > Musl version 1.2.1:- > Download link:- https://git.musl-libc.org/cgit/musl/snapshot/musl-1.2.1.tar..gz > > > Detailed issue. > > Architure used:- > uname -a > Linux f1a836851f19 4.18.0-348.12.2.el8_5.ppc64le #1 SMP Mon Jan 17 06:49:39 EST 2022 ppc64le ppc64le ppc64le GNU/Linux > > > Issue faced:- > ../configure > ............ > checking preprocessor condition _CALL_ELF == 2... true > checking preprocessor condition __LITTLE_ENDIAN__... true > checking preprocessor condition _SOFT_FLOAT... false > configured for powerpc64 variant: powerpc64le > checking whether compiler's long double definition matches float.h... no > ../configure: error: unsupported long double type You need a toolchain built for powerpc64le-linux-musl target where long double has the same size/range/representation as double. The musl ABI for ppc64 uses this because the legacy IBM double-double type for long double does not match our policy of only using IEEE-conforming types for long double (which various code in musl depends on), and support for IEEE quad on ppc64 is limited (even moreso at the time the port was added) and would have tied us/users to particular compilers that support it. If you're trying to use the musl-gcc wrapper on a glibc host, you ~may~ be able to make it work by setting the CC variable to something to override, like CC="gcc -mno-long-double-128" or CC="gcc -mlong-double-64" (not sure which if either of those works; the GCC docs seem to be omitting it but referring to it elsewhere). Rich
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