Considering that the Zbb extension is supported since GCC version 12 [1] and that older GCC versions do not support Z extensions in -march (I haven't faced this issue for GCC >=11.2), leading to compilation failures, the baseline version for GCC is set to 12.2 and for GNU binutils to 2.39.
The GCC version is set to 12.2 instead of 12.1 because Xen's GitLab CI uses Debian 12, which includes GCC 12.2 and GNU binutils 2.39. [1] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=149e217033f01410a9783c5cb2d020cf8334ae4c Signed-off-by: Oleksii Kurochko <oleksii.kuroc...@gmail.com> --- Changes in V8: - Rewrite commit message to explain more clearly why GCC 12 is choosen as baseline version. --- Changes in V7: - new patch --- README | 3 +++ 1 file changed, 3 insertions(+) diff --git a/README b/README index 72f6b0fcde..9d9c6fc324 100644 --- a/README +++ b/README @@ -48,6 +48,9 @@ provided by your OS distributor: - For ARM 64-bit: - GCC 5.1 or later - GNU Binutils 2.24 or later + - For RISC-V 64-bit: + - GCC 12.2 or later + - GNU Binutils 2.39 or later * POSIX compatible awk * Development install of zlib (e.g., zlib-dev) * Development install of Python 2.7 or later (e.g., python-dev) -- 2.48.1
