Date: Thu, 30 Jan 2020 02:10:24 +0300 From: Андрей Аладьев <aladjev.andrew@...il.com> To: musl@...ts.openwall.com Subject: Re: Static linking is broken after creation of DT_TEXTREL segment I've tested and both "-fno-pie" and "-static" are not compatible with some gcc and clang sanitizers, so these solutions are bad. Found right solution in gmp source. It was hidden in configure: "--with-pic" option. I've enabled it and now both glibc and musl works perfect. Created gentoo bug https://bugs.gentoo.org/707332. For everyone who will read this thread - you need to enable "--with-pic" option for gmp. You don't need to disable assembly completely. So on this week I will try to create small user friendly patch for musl about readonly relocations. чт, 30 янв. 2020 г. в 00:46, Rich Felker <dalias@...c.org>: > On Thu, Jan 30, 2020 at 12:35:52AM +0300, Андрей Аладьев wrote: > > "readelf -d main | grep TEXTREL" returns the same text on both musl and > > glibc containers: > > > > 0x0000000000000016 (TEXTREL) 0x0 > > 0x000000000000001e (FLAGS) TEXTREL > > > > "gcc -no-pie" is another workaround for musl container like Rich said. > But > > I think that 'set(CMAKE_EXE_LINKER_FLAGS "-static")' will be best cross > > platform solution. As I know "-static" implies "no-pie". > > -static normally does not imply -no-pie with musl target. musl was the > first to introduce static pie, and it was not treated as something > special/weird you have to request, just what you get with -static + > -pie or -static and default-pie toolchain. > > When GCC upstreamed static pie with glibc support, they made it so > -static overrides -pie and so you need the new -static-pie to get > static pie. musl patches for gcc revert this change since it's a > regression to the original behavior, treats static-pie a second-class, > and does not work with environments where pie is mandatory (like nommu > targets) where default-pie *must* be honored. > > Rich > Content of type "text/html" skipped
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