On 2/6/24 16:48, Nathan Chancellor wrote: > On Tue, Feb 06, 2024 at 12:05:29PM +0100, Daniel Bristot de Oliveira wrote: >> The following errors are showing up when compiling rtla with clang: >> >> $ make HOSTCC=clang CC=clang LLVM_IAS=1 >> [...] >> >> clang -O -g -DVERSION=\"6.8.0-rc1\" -flto=auto -ffat-lto-objects >> -fexceptions -fstack-protector-strong >> -fasynchronous-unwind-tables -fstack-clash-protection -Wall >> -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 >> -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized >> $(pkg-config --cflags libtracefs) -c -o src/utils.o src/utils.c >> >> clang: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument] > > For what it's worth, this flag is supported in clang 17.0.0 and newer: > > https://github.com/llvm/llvm-project/commit/610fc5cbcc8b68879c562f6458608afe2473ab7f Good! still, I am getting this error on fedora, with this clang version: bristot@x1:~/src/git/linux/tools/tracing/rtla$ clang --version clang version 17.0.6 (Fedora 17.0.6-1.fc39) Target: x86_64-redhat-linux-gnu Thread model: posix InstalledDir: /usr/bin :-( > But if it is not critical, just dropping the flag like you have done > here rather than conditionally supporting it is probably easier. Yeah, I will drop it for now, and keep monitoring. Thanks Natan! -- Daniel
