Add build.sh to help claude. Add tmp to avoid polluting the main directory with issues claude is investigating

Author: gnachman

.gitignore

@@ -7,6 +7,7 @@
 *.perspective
 *.perspectivev3
 build/
+tmp/
 .DS_Store
 canary.xml
 testing.xml

CLAUDE.md

@@ -8,7 +8,7 @@
 - Don't create dependency cycles. Use delegates or closures instead.
 - To run unit tests in ModernTests, use tools/run_tests.expect. It takes an argument naming the test or tests, such as `tools/run_tests.expect ModernTests/iTermScriptFunctionCallTest/testSignature`
 - When renaming a file tracked by git (and almost all of them are) use `git mv` instead of `mv`
-- To make a debug build run `make Development`
+- To make a debug build run `tools/build.sh` (or `tools/build.sh Development`). This saves logs to `tmp/build.log` and shows only errors/warnings on failure.
 - Little scripts or text files that are used for manual testing of features go in tests/
 - The deployment target for iTerm2 is macOS 12. You don't need to perform availability checks for older versions.
 - Don't replace curly quotes with straight quotes. Same for apostrophes and single quotes.

tools/build.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+# Build script that filters output to show only errors and warnings
+# Usage: tools/build.sh [configuration]
+# Configuration defaults to Development
+
+set -o pipefail
+
+CONFIG="${1:-Development}"
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+TMP_DIR="$PROJECT_DIR/tmp"
+LOG_FILE="$TMP_DIR/build.log"
+
+# Create tmp directory if needed
+mkdir -p "$TMP_DIR"
+
+echo "Building $CONFIG configuration..."
+echo "Full log: $LOG_FILE"
+
+# Run the build and capture output
+cd "$PROJECT_DIR"
+make "$CONFIG" > "$LOG_FILE" 2>&1
+BUILD_STATUS=$?
+
+if [ $BUILD_STATUS -eq 0 ]; then
+    echo "Build succeeded."
+    exit 0
+fi
+
+echo ""
+echo "Build failed. Errors and warnings:"
+echo "-----------------------------------"
+
+# Extract errors and warnings, filtering out noise
+# Look for compiler errors/warnings with file:line:column format
+grep -E "^/.*:\d+:\d+: (error|warning):" "$LOG_FILE" | head -50
+
+# Also check for linker errors
+grep -E "^(ld|clang): error:" "$LOG_FILE" | head -10
+
+# Check for Swift errors (different format)
+grep -E "error: " "$LOG_FILE" | grep -v "CLANG_WARN\|GCC_TREAT\|export " | head -20
+
+# Show the failure summary
+echo ""
+echo "-----------------------------------"
+grep -E "\([0-9]+ (error|warning|failure)" "$LOG_FILE" | tail -5
+
+exit $BUILD_STATUS