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-rw-r--r--debug/README.md3
1 files changed, 2 insertions, 1 deletions
diff --git a/debug/README.md b/debug/README.md
index 6133b6c..7dd6790 100644
--- a/debug/README.md
+++ b/debug/README.md
@@ -9,7 +9,8 @@ confident that the actual debug interface is functioning correctly.
Requirements
============
The following should be in the user's path:
-* riscv64-unknown-elf-gcc
+* riscv64-unknown-elf-gcc (`rvv-0.9.x` branch for riscv-gnu-toolchain should
+ work if master does not have vector support yet)
* riscv64-unknown-elf-gdb (can be overridden with `--gdb` when running
gdbserver.py manually), which should be the latest from
git://sourceware.org/git/binutils-gdb.git.