Autofix Missing Header

Missing Header Skill

Fixes C/C++ compilation errors where header files cannot be found.

Detection Patterns

• fatal error: 'X.h' file not found
• cannot open source file "X.h"
• No such file or directory (for headers)

Strategy

1. Extract Header Name: Parse the error to get the missing header (e.g., utils/config.h).
2. Search for Header: Use file search to locate the header in the project.
3. Determine Fix Type:
   • If header exists elsewhere → Add include path to build file OR fix the #include path.
   • If header is a system/standard header → Add appropriate #include.
4. Apply Fix: Modify the source file or build configuration.

Instructions

Step 1: Parse the Error

Extract:

• Source file: The file that failed to compile.
• Header name: The missing header path.

Step 2: Search for the Header

find . -name "config.h" -type f

Or use semantic search to locate the header.

Step 3: Apply the Fix

Option A: Fix #include path in source file If the header is at src/utils/config.h but included as #include "config.h":

// Before
#include "config.h"
// After
#include "utils/config.h"

Option B: Add include directory to build file For GN (BUILD.gn):

include_dirs = [ "src/utils" ]

For Soong (Android.bp):

local_include_dirs: ["src/utils"],

Step 4: Verify

Re-run the build or check that the include now resolves.

Common Header Mappings