build(docker): Add Linux LSP support by fixing compile_commands.json paths (TheSuperHackers#2303)

Author: abhatem

scripts/docker-build.sh

@@ -128,6 +128,17 @@ build_docker_image() {
     print_success "Docker image ready"
 }
 
+fix_compile_commands() {
+    local fix_script="$SCRIPT_DIR/fix_compile_commands.py"
+    if [[ -f "$fix_script" ]] && command -v python3 &>/dev/null; then
+        # Only run if compile_commands.json exists in the build dir
+        if [[ -f "$BUILD_DIR/compile_commands.json" ]]; then
+            print_info "Fixing compile_commands.json for host environment..."
+            python3 "$fix_script" || print_warning "Failed to fix compile_commands.json"
+        fi
+    fi
+}
+
 run_build() {
     local force_cmake="$1"
     local target="$2"
@@ -266,6 +277,7 @@ build_docker_image
 run_build "$FORCE_CMAKE" "$TARGET" "$INTERACTIVE"
 
 if [[ "$INTERACTIVE" != "true" ]]; then
+    fix_compile_commands
     list_outputs
 
     echo ""

scripts/fix_compile_commands.py

@@ -0,0 +1,101 @@
+#!/usr/bin/env python3
+# Copyright 2026 TheSuperHackers
+#
+# This file is part of Command & Conquer: Generals and Command & Conquer: Zero Hour.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+"""
+Compile commands fixer for Linux development.
+
+This script makes the compile_commands.json generated by the Docker build
+usable on the Linux host by:
+- Rewriting container paths (/build/cnc) to host absolute paths.
+- Converting Windows backslashes to forward slashes.
+- Stripping Wine drive letters (Z:).
+"""
+
+import json
+import os
+import sys
+
+def fix_path(path, root_dir):
+    # Normalize path separators
+    path = path.replace('\\', '/')
+
+    # Remove drive letter if present
+    if len(path) > 1 and path[1] == ':':
+        path = path[2:]
+
+    # Replace the container mount point with the host root directory
+    # The container mounts the project at /build/cnc
+    if path.startswith('/build/cnc'):
+        return os.path.join(root_dir, path[len('/build/cnc'):].lstrip('/'))
+
+    return path
+
+def main():
+    script_dir = os.path.dirname(os.path.abspath(__file__))
+    project_root = os.path.dirname(script_dir)
+
+    build_dir = os.path.join(project_root, 'build', 'docker')
+    input_file = os.path.join(build_dir, 'compile_commands.json')
+    output_file = os.path.join(project_root, 'compile_commands.json')
+
+    if not os.path.exists(input_file):
+        print(f"Error: {input_file} not found. Please run the docker build first.")
+        sys.exit(1)
+
+    print(f"Reading from: {input_file}")
+
+    with open(input_file, 'r') as f:
+        data = json.load(f)
+
+    for entry in data:
+        # Fix directory
+        if 'directory' in entry:
+            entry['directory'] = fix_path(entry['directory'], project_root)
+
+        # Fix file
+        if 'file' in entry:
+            entry['file'] = fix_path(entry['file'], project_root)
+
+        # Fix command
+        if 'command' in entry:
+            command = entry['command']
+
+            # Normalize to forward slashes.
+            command = command.replace('\\', '/')
+
+            # Replace container path with host project root.
+            command = command.replace('/build/cnc', project_root)
+
+            # Handle potential drive letter artifacts from Wine (Z:/build/cnc).
+            command = command.replace('Z:/build/cnc', project_root)
+            command = command.replace('z:/build/cnc', project_root)
+
+            # Strip remaining drive letters from tools (e.g., Z:/build/tools/...).
+            command = command.replace('Z:', '')
+            command = command.replace('z:', '')
+
+            entry['command'] = command
+
+    print(f"Writing to: {output_file}")
+    with open(output_file, 'w') as f:
+        json.dump(data, f, indent=2)
+
+    print("Done. compile_commands.json is now ready for use.")
+
+if __name__ == '__main__':
+    main()