997794eaa5
Documents all issues found and fixes applied to the Makefile, including both implemented changes and remaining suggestions. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Makefile Improvements
This document lists the issues identified in the original Makefile and the improvements that were implemented.
Issues Fixed
1. Hardcoded .exe extension on Unix
Problem: BINARY_NAME=lambda.exe used a Windows extension on macOS/Linux systems.
Solution: Changed to BINARY_NAME=lambda since Unix executables don't use extensions.
Commit: 0d06fac - fix: remove Windows .exe extension from binary name
2. Redundant chmod +x
Problem: The chmod +x command was unnecessary since go build already sets the executable bit.
Solution: Removed the redundant chmod +x ${BINARY_NAME} line.
Commit: e0b0b92 - refactor: remove redundant chmod +x command
3. Missing .PHONY declarations
Problem: Without .PHONY, if files named run, graph, etc. existed, Make would skip those targets.
Solution: Added .PHONY: help it run profile explain graph clean declaration.
Commit: e5ceeb2 - feat: add .PHONY declarations for all targets
4. No clean target
Problem: No standard way to remove build artifacts.
Solution: Added clean target to remove binary, output files, and profile directory:
clean:
rm -f ${BINARY_NAME} program.out
rm -rf profile/
Commit: 7927df4 - feat: add clean target to remove build artifacts
5. Missing help or default target
Problem: Running make with no arguments was unclear about available targets.
Solution: Added help target documenting all available commands and their usage.
Commit: 24fdc1c - feat: add help target to document available commands
6. Profile directory not created
Problem: The profile and explain targets wrote to profile/cpu.prof but never created the directory, causing failures on first run.
Solution: Added mkdir -p profile to both profile and explain targets.
Commit: bb48d07 - fix: ensure profile directory exists before writing
7. No dependency check on graph
Problem: The graph target assumed profile/cpu.prof exists but didn't depend on profile.
Solution: Changed graph: to graph: profile to ensure profiling runs first.
Commit: 3158c35 - fix: add profile dependency to graph target
8. Verbose command prefixes
Problem: Every command used @ prefix individually to suppress output, cluttering the file.
Solution: Added .SILENT: directive at the top and removed all @ prefixes. Also moved TEST variable to top with other variables.
Commit: 8f70bfb - refactor: use .SILENT directive instead of @ prefixes
Additional Suggestions (Not Yet Implemented)
9. Missing lambda binary in .gitignore
Issue: The .gitignore has *.exe but not the actual lambda binary name. Since we removed the .exe extension, the binary won't be ignored.
Recommendation: Add lambda to .gitignore:
# Build artifacts
lambda
10. No explicit default target
Issue: While help is currently the first target (and thus default), it's not explicitly declared.
Recommendation: Add .DEFAULT_GOAL = help at the top for clarity:
BINARY_NAME=lambda
TEST=simple
.DEFAULT_GOAL := help
.SILENT:
.PHONY: help it run profile explain graph clean
Summary
The Makefile has been significantly improved with better organization, proper dependency management, directory creation, helpful documentation, and cleaner syntax. The remaining suggestions are minor quality-of-life improvements that can be addressed as needed.