Re: [systemd-devel] systemd build process, stripped ELF flags (MIPS)
2015-01-19 19:37 GMT+01:00 Manuel Lauss : > On Mon, Jan 19, 2015 at 3:14 PM, Lennart Poettering > wrote: >> On Mon, 19.01.15 09:47, Manuel Lauss (manuel.la...@gmail.com) wrote: >> >>> Can anyone please point out why the .MIPS.abiflags sections are >>> omitted entirely? >>> I've tried to build with STRIP=/bin/true but that didn't help, and I don't >>> know >>> enough about the build process to fix it myself. >> >> Maybe the MIPS toolchain strips these if --gc-sections is passed to >> LD, which we do? > > Turned out to be something completely different: systemd tries to us gold > as the default linked. gold on mips isn't really quite usable yet; after > removing the ld.gold binary systemd now has the necessary abiflags. gold seems to still have issues on various architectures. Since ifuncs aren't used any more for the compat libraries there isn't a real reason anymore to explicitely switch to gold as a linker. I suggest we just drop -Wl,-fuse-ld=gold from LDFLAGS and use the default linker again. -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth? ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] systemd build process, stripped ELF flags (MIPS)
On Mon, Jan 19, 2015 at 3:14 PM, Lennart Poettering wrote: > On Mon, 19.01.15 09:47, Manuel Lauss (manuel.la...@gmail.com) wrote: > >> Can anyone please point out why the .MIPS.abiflags sections are >> omitted entirely? >> I've tried to build with STRIP=/bin/true but that didn't help, and I don't >> know >> enough about the build process to fix it myself. > > Maybe the MIPS toolchain strips these if --gc-sections is passed to > LD, which we do? Turned out to be something completely different: systemd tries to us gold as the default linked. gold on mips isn't really quite usable yet; after removing the ld.gold binary systemd now has the necessary abiflags. Thanks! Manuiel ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] systemd build process, stripped ELF flags (MIPS)
El 19/01/15 a las 05:47, Manuel Lauss escribió: The systemd build process manages to create binaries without this .MIPS.abiflags section, and this leads the 3.18 kernel to refuse to load it: Nope, the build process does no such thing, your toolchain is buggy, wild guess is that --gc-sections does not know that section is mandatory and removes it. Please talk about this with binutils developers ;-) ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] systemd build process, stripped ELF flags (MIPS)
On Mon, 19.01.15 09:47, Manuel Lauss (manuel.la...@gmail.com) wrote: > Can anyone please point out why the .MIPS.abiflags sections are > omitted entirely? > I've tried to build with STRIP=/bin/true but that didn't help, and I don't > know > enough about the build process to fix it myself. Maybe the MIPS toolchain strips these if --gc-sections is passed to LD, which we do? Lennart -- Lennart Poettering, Red Hat ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] systemd build process, stripped ELF flags (MIPS)
Hello, MIPS Linux recently introduced updates to its FPU ABI, and for that to work correctly, ELF binaries now have to have a ".MIPS.abiflags" section. This is an example binary built with binutils 2.25+: readelf -hl /lib/libc.so.6 [...] Section to Segment mapping: Segment Sections... 00 01 .interp 02 .MIPS.abiflags [...] Newer MIPS kernels will refuse to load binaries and libs which have mismatched values in .MIPS.abiflags or of one of the involved binaries has .MIPS.abiflags missing (a patch to linux has been posted to relax that though). The systemd build process manages to create binaries without this .MIPS.abiflags section, and this leads the 3.18 kernel to refuse to load it: Failed to execute /usr/lib/systemd/systemd (error -84). Attempting default readelf -hl /usr/lib/systemd/systemd [...] Section to Segment mapping: Segment Sections... 00 01 .interp 02 .interp .note.ABI-tag .dynsym .dynstr .hash .gnu.version .gnu.version_r .rel.dyn .init .text .fini .rodata .eh_frame .eh_frame_hdr 03 .tdata .data.rel.ro.local .jcr .fini_array .init_array .data.rel.ro .dynamic .tm_clone_table .sdata .data BUS_ERROR_MAP .got .bss 04 05 .dynamic 06 .note.ABI-tag 07 .eh_frame_hdr 08 .tdata .tbss 09 .tdata .data.rel.ro.local .jcr .fini_array .init_array .data.rel.ro .dynamic Can anyone please point out why the .MIPS.abiflags sections are omitted entirely? I've tried to build with STRIP=/bin/true but that didn't help, and I don't know enough about the build process to fix it myself. Thanks! Manuel ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
