Translate "u-boot SPL" to Rust : unknown target CPU 'armv8-a+crc'

[lokesh2019]

Hello,

First of all, my compliments and thank you for the work you have done here.

I am trying to convert upstream u-boot SPL (https://github.com/u-boot/u-boot) for a specific aarch64 board (imx8mm-evk) to Rust.
I am following the steps documented on this blog post: https://immunant.com/blog/2020/01/quake3/

I have managed to generate the compiler_commands.json file with a minor tweak to your script to point to my aarch64 gcc.

diff --git a/scripts/cc-wrappers/common.py b/scripts/cc-wrappers/common.py
index 7711bd31..57abce20 100644
--- a/scripts/cc-wrappers/common.py
+++ b/scripts/cc-wrappers/common.py
@@ -10,7 +10,7 @@ def run(build_type):
     if not os.path.exists(build_commands_dir):
         os.mkdir(build_commands_dir)
 
-    command = os.path.basename(sys.argv[0])
+    command = "/opt/nfast/gcc/bin/aarch64-codesafe-linux-musl-g" + os.path.basename(sys.argv[0])
     build_info = {
         "type": build_type,
         "directory": os.getcwd(),

Instructions to build SPL:

export CROSS_COMPILE=/opt/nfast/gcc/bin/aarch64-codesafe-linux-musl-
make imx8mm_evk_defconfig
BUILD_COMMANDS_DIRECTORY='/tmp/abcd' make SPL CC=/work/c2rust/scripts/cc-wrappers/cc

And then to combine the build commands:

python3 /work/c2rust/scripts/convert_build_commands.py /tmp/abcd /work/u-boot/converted.json

And then I copy converted.json to a temp directory renamed to compile_commands.json and run:

/work/c2rust/target/release/c2rust transpile ./compile_commands.json

I have attached compile_commands.json and out.txt - the output of the transpile operation here.

In the output, all the C files are not recognised for some reason. They all have errors similar to this block

Error while processing /work/u-boot/board/freescale/imx8mm_evk/spl.c.
�[33mwarning:�[0m Error: Could not parse input file. Skipping /work/u-boot/board/freescale/imx8mm_evk/spl.c; is it well-formed C?
warning: unknown warning option '-Wno-stringop-truncation'; did you mean '-Wno-string-concatenation'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-stringop-overflow'; did you mean '-Wno-shift-overflow'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-packed-not-aligned'; did you mean '-Wno-over-aligned'? [-Wunknown-warning-option]
warning: argument unused during compilation: '-mstrict-align' [-Wunused-command-line-argument]
warning: argument unused during compilation: '-ffixed-r9' [-Wunused-command-line-argument]
warning: argument unused during compilation: '-ffixed-x18' [-Wunused-command-line-argument]
warning: unknown warning option '-Wno-stringop-truncation'; did you mean '-Wno-string-concatenation'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-stringop-overflow'; did you mean '-Wno-shift-overflow'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
warning: unknown warning option '-Wno-packed-not-aligned'; did you mean '-Wno-over-aligned'? [-Wunknown-warning-option]
error: unknown target CPU 'armv8-a+crc'
note: valid target CPU values are: nocona, core2, penryn, bonnell, atom, silvermont, slm, goldmont, goldmont-plus, tremont, nehalem, corei7, westmere, sandybridge, corei7-avx, ivybridge, core-avx-i, haswell, core-avx2, broadwell, skylake, skylake-avx512, skx, cascadelake, cooperlake, cannonlake, icelake-client, rocketlake, icelake-server, tigerlake, sapphirerapids, alderlake, knl, knm, k8, athlon64, athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10, barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2, znver3, x86-64, x86-64-v2, x86-64-v3, x86-64-v4

My question is, am I missing something trivial or am I trying to transpile code of an unsupported architecture?