Hello Sahaj, On Fri, Feb 16, 2024 at 5:50 AM Sahaj Sarup <sahaj.sa...@linaro.org> wrote: > > Hi all, > > Since commit f8cebb4f789c9950caf55a0b73e88049e7a1c3a3 enabled LTO by > default for imx8m platforms, > I have been having issues building u-boot. > I am primarily working on imx8mp instead of imx8mm platforms so the > bug resolved by that commit doesn't affect me yet. > But I guess it's a generic issue with u-boot's LTO requirements and GCC 13. > > Build log: > ``` > LTO u-boot > /usr/bin/aarch64-linux-gnu-ld: > /usr/lib/gcc/aarch64-linux-gnu/13/libgcc.a(lse-init.o): in function > `init_have_lse_atomics': > /builddir/build/BUILD/gcc-13.2.1-20230728/aarch64-linux-gnu/aarch64-linux-gnu/libgcc/../../../gcc-13.2.1-20230728/libgcc/config/aarch64/lse-init.c:46: > undefined reference to `__getauxval' > collect2: fatal error: ld terminated with signal 11 [Segmentation > fault], core dumped > compilation terminated. > make: *** [Makefile:1766: u-boot] Error 1 > make: *** Deleting file 'u-boot' > ``` > > GCC Version: > ``` > $ aarch64-linux-gnu-gcc -v > Using built-in specs. > COLLECT_GCC=/usr/bin/aarch64-linux-gnu-gcc > COLLECT_LTO_WRAPPER=/usr/libexec/gcc/aarch64-linux-gnu/13/lto-wrapper > Target: aarch64-linux-gnu > Configured with: ../gcc-13.2.1-20230728/configure --bindir=/usr/bin > --build=x86_64-redhat-linux-gnu --datadir=/usr/share --disable- > decimal-float --disable-dependency-tracking --disable-gold > --disable-libgcj --disable-libgomp --disable-libmpx > --disable-libquadmat > h --disable-libssp --disable-libunwind-exceptions --disable-shared > --disable-silent-rules --disable-sjlj-exceptions --disable-threa > ds --with-ld=/usr/bin/aarch64-linux-gnu-ld --enable-__cxa_atexit > --enable-checking=release --enable-gnu-unique-object --enable-init > fini-array --enable-languages=c,c++ --enable-linker-build-id > --enable-lto --enable-nls --enable-obsolete --enable-plugin --enable-t > argets=all --exec-prefix=/usr --host=x86_64-redhat-linux-gnu > --includedir=/usr/include --infodir=/usr/share/info --libexecdir=/usr/ > libexec --localstatedir=/var --mandir=/usr/share/man --prefix=/usr > --program-prefix=aarch64-linux-gnu- --sbindir=/usr/sbin --shared > statedir=/var/lib --sysconfdir=/etc --target=aarch64-linux-gnu > --with-bugurl=http://bugzilla.redhat.com/bugzilla/ --with-gcc-major- > version-only --with-isl --with-newlib > --with-plugin-ld=/usr/bin/aarch64-linux-gnu-ld > --with-sysroot=/usr/aarch64-linux-gnu/sys-root > --with-system-libunwind --with-system-zlib --without-headers > --enable-gnu-indirect-function --with-linker-hash-style=gnu > Thread model: single > Supported LTO compression algorithms: zlib zstd > gcc version 13.2.1 20230728 (Red Hat Cross 13.2.1-1) (GCC) > ``` > > Thanks, > Sahaj Sarup
This might be related [1] (try tocompile with -mno-outline-atomics): "GCC 10.1.0 introduced the -moutline-atomics option which, when enabled, use LSE instructions when the processor provides them. The option is enabled by default and unfortunately causes the following error at compile time: aarch64-linux-gnu-ld: /usr/lib/gcc/aarch64-linux-gnu/10.1.0/libgcc.a(lse-init.o): in function `init_have_lse_atomics': lse-init.c:(.text.startup+0xc): undefined reference to `__getauxval' This is happening because we are linking against our own libcflat which doesn't implement the function __getauxval(). Disable the use of the out-of-line functions by compiling with -mno-outline-atomics." [1] https://patchwork.kernel.org/project/kvm/patch/20200728121751.15083-1-drjo...@redhat.com/ -- Best regards - Freundliche Grüsse - Meilleures salutations Igor Opaniuk Senior Software Engineer, Embedded & Security E: igor.opan...@foundries.io W: www.foundries.io
