The "Mute stupid warnings" commit (#5456) will be dropped before merging (I could make a separate PR after adding a conf option for it). It strips the idiot warnings while retaining any relevant warnings (mutes the warning entirely if there were no relevant ones).

I added conf options. IMO it can now be kept in this PR.

# Mute buggy nvidia warnings about kernel overriding noinline
# attribute. Even with this set, they will show at "debug verbosity"
# as in --verbose:6.
MuteBogusNvidiaWarnings = Y

Also added these in same commit:

# Show runtime build warnings regardless of verbosity.
AlwaysShowBuildWarnings = N

# Add ptxas info (-cl-nv-verbose) for nvidia to build log
NvidiaShowPtxas = Y

Perhaps the ptax info should default to N - as developers we can enable it in john-local.conf.

Pro-tip: For POCL, you get much better crash info after adding -g to conf's GlobalBuildOpts.

As of now, there's a bug in here

I think I squashed it. Need to test more, and also check if other formats with that keybuffer packing method have the same problem, never surfaced.

Need to test more, and also check if other formats with that keybuffer packing method have the same problem, never surfaced.

It seems fine now. Other formats may or may not have been affected (it should often be triggered in self tests, which apparently didn't happen) but I added safety checks in #5750 anyway.

Pro-tip: For POCL, you get much better crash info after adding -g to conf's GlobalBuildOpts.

This breaks build on some other platforms though, such as nvidia, so need to be used selectively.

Pro-tip: For POCL, you get much better crash info after adding -g to conf's GlobalBuildOpts.

This breaks build on some other platforms though, such as nvidia, so need to be used selectively.

So I think we can add it automatically inside get_build_opts() if the verbosity is > XX (only if pocl and ...).

diff --git a/src/opencl_common.c b/src/opencl_common.c
index 87dea222b..004a64f7a 100644
--- a/src/opencl_common.c
+++ b/src/opencl_common.c
@@ -1136,8 +1136,11 @@ static char *get_build_opts(int sequential_id, const char *opts)
                        global_opts = OPENCLBUILDOPTIONS;
 
        snprintf(build_opts, LINE_BUFFER_SIZE,
-                "-I opencl %s %s%s%s%s%s%d %s%d %s -D_OPENCL_COMPILER %s",
+                "-I opencl %s %s%s%s%s%s%s%d %s%d %s -D_OPENCL_COMPILER %s",
                global_opts,
+                       options.verbosity >= VERB_LEGACY &&
+                       get_platform_vendor_id(get_platform_id(sequential_id)) ==
+                        PLATFORM_POCL ? "-g " : "",
                get_device_version(sequential_id) >= 200 ? "-cl-std=CL1.2 " : "",
 #ifdef __APPLE__
                "-D__OS_X__ ",

0001-OpenCL-add-g-for-POCL-to-get-better-crach-info.PATCH

So I think we can add it automatically inside get_build_opts() if the verbosity is > XX (only if pocl and ...).

True, like for -v:6 (debug) and above. Theoretically we could also auto-detect support for it, autoconf style 🤣

It now fails self-test on Super's Vega, but at least it doesn't bring the entire machine down now 👀
Switched to the alternative AES, no difference. Running with -lws=1 -gws=1 (for clues) did not help.

The format worked fine before this PR. would have been nicer the other way around. Had 250927K c/s before, now (running with -skip) 330752K.

Tried several other little tricks to no avail. Giving up on that.