build-log

name	build-log
description	View and analyze build logs. Use when user wants to see build errors, check previous build output, or debug build failures.

Build Log Viewer

View and analyze PyGPUkit build logs.

Log Location

Build logs are stored in .claude/logs/build/

Format: build_sm{SM}_cuda{VERSION}_{TIMESTAMP}.log

Usage

# List recent logs
ls -lt .claude/logs/build/

# View latest log
cat .claude/logs/build/$(ls -t .claude/logs/build/ | head -1)

# View specific log
cat .claude/logs/build/build_sm120a_cuda13.1_20241227_120000.log

# Search for errors
grep -i error .claude/logs/build/$(ls -t .claude/logs/build/ | head -1)

# Search for warnings
grep -i warning .claude/logs/build/$(ls -t .claude/logs/build/ | head -1)

# Show last 50 lines of latest log
tail -50 .claude/logs/build/$(ls -t .claude/logs/build/ | head -1)

Common Error Patterns

Pattern	Meaning
nvcc fatal	CUDA compilation error
error: no operator	C++ type mismatch
undefined reference	Linker error (missing symbol)
CMake Error	Build configuration issue
fatal error C1083	Missing header file

Instructions

1. When build fails, first list recent logs
2. Read the latest log or the specific failed build log
3. Search for error: or fatal: patterns
4. Report the specific error message and context
5. Suggest fixes based on the error type

Cleanup

Logs are automatically cleaned up (last 10 kept). To manually clean:

# Remove all logs older than 7 days
find .claude/logs/build/ -mtime +7 -delete

# Keep only last 5 logs
ls -t .claude/logs/build/*.log | tail -n +6 | xargs rm -f