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Run npx skillmds@latest add tomevault-io/xcode-build-errors in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Who published Xcode Build Errors?

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Xcode Build Errors by tomevault-io — Agent Skill

Name: Xcode Build Errors
Author: tomevault-io

Xcode Build Errors

Analyzes Xcode build failures to explain errors and suggest fixes. Use when build fails, compiler errors appear, linker errors occur, code signing fails, or user asks "why did the build fail?" or "what does this error mean?

tomevault-io e4663b2 2 files · 3.9 KB Updated Sep 17, 2026

File contents

Xcode Build Error Analyzer

Parses and explains Xcode build failures, providing actionable guidance for fixing errors.

When to Use

User pastes build output containing errors
User asks "why did my build fail?"
User asks "what does this error mean?"
Build log contains compilation, linking, or signing errors
User shares .xcresult bundle path

Usage

From Build Output

If the user pastes build output directly, first filter it to extract errors:

echo "<pasted-output>" | swift ~/.claude/plugins/xcode-dx-skills/skills/xcode-log-filter/scripts/filter-log.swift

From Log File

swift ~/.claude/plugins/xcode-dx-skills/skills/xcode-build-errors/scripts/parse-build-errors.swift /path/to/build.log

From xcresult Bundle

swift ~/.claude/plugins/xcode-dx-skills/skills/xcode-build-errors/scripts/parse-build-errors.swift /path/to/Build.xcresult

Error Categories

The script categorizes errors to help with diagnosis:

Category	Examples
`compiler`	Type mismatches, missing imports, syntax errors
`linker`	Undefined symbols, duplicate symbols, library not found
`signing`	Provisioning profile issues, certificate problems
`resource`	Missing assets, storyboard errors, Info.plist issues
`swift_type`	Complex type inference failures, protocol conformance
`dependency`	SPM resolution failures, framework embedding

Analysis Approach

Parse errors using the script to get structured data
Group by category to identify patterns (e.g., "all linker errors")
Identify root cause - often the first error causes subsequent ones
Explain the error in plain terms
Suggest specific fixes with code examples when applicable

Common Error Patterns

Type Mismatch

Cannot convert value of type 'X' to expected argument type 'Y'

Check if types are compatible
Look for missing type conversions or casts
Consider if an optional needs unwrapping

Undefined Symbol

Undefined symbol: _OBJC_CLASS_$_SomeClass

Framework not linked - add to "Link Binary With Libraries"
Missing -ObjC linker flag for static libraries
SPM target not properly declared as dependency

Signing Issues

No signing certificate "iOS Development" found

Certificate not installed in Keychain
Provisioning profile expired or missing
Bundle identifier mismatch

Module Not Found

No such module 'SomeFramework'

SPM dependency not resolved - run swift package resolve
Framework search paths incorrect
Build order issue - dependency not built first

Output Format

The script outputs JSON with:

errors: Array of errors with file, line, message, category
error_groups: Errors grouped by category
root_cause_candidates: Most likely root cause errors
fix_suggestions: Suggested fixes based on error patterns

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: xcode-build-errorsdescription: Analyzes Xcode build failures to explain errors and suggest fixes. Use when build fails, compiler errors appear, linker errors occur, code signing fails, or user asks "why did the build fail?" or "what does this error mean?---# Xcode Build Error AnalyzerParses and explains Xcode build failures, providing actionable guidance for fixing errors.## When to Use- User pastes build output containing errors- User asks "why did my build fail?"- User asks "what does this error mean?"- Build log contains compilation, linking, or signing errors- User shares `.xcresult` bundle path## Usage### From Build OutputIf the user pastes build output directly, first filter it to extract errors:```bashecho "<pasted-output>" | swift ~/.claude/plugins/xcode-dx-skills/skills/xcode-log-filter/scripts/filter-log.swift```### From Log File```bashswift ~/.claude/plugins/xcode-dx-skills/skills/xcode-build-errors/scripts/parse-build-errors.swift /path/to/build.log```### From xcresult Bundle```bashswift ~/.claude/plugins/xcode-dx-skills/skills/xcode-build-errors/scripts/parse-build-errors.swift /path/to/Build.xcresult```## Error CategoriesThe script categorizes errors to help with diagnosis:| Category | Examples ||----------|----------|| `compiler` | Type mismatches, missing imports, syntax errors || `linker` | Undefined symbols, duplicate symbols, library not found || `signing` | Provisioning profile issues, certificate problems || `resource` | Missing assets, storyboard errors, Info.plist issues || `swift_type` | Complex type inference failures, protocol conformance || `dependency` | SPM resolution failures, framework embedding |## Analysis Approach1. **Parse errors** using the script to get structured data2. **Group by category** to identify patterns (e.g., "all linker errors")3. **Identify root cause** - often the first error causes subsequent ones4. **Explain the error** in plain terms5. **Suggest specific fixes** with code examples when applicable## Common Error Patterns### Type Mismatch```Cannot convert value of type 'X' to expected argument type 'Y'```- Check if types are compatible- Look for missing type conversions or casts- Consider if an optional needs unwrapping### Undefined Symbol```Undefined symbol: _OBJC_CLASS_$_SomeClass```- Framework not linked - add to "Link Binary With Libraries"- Missing `-ObjC` linker flag for static libraries- SPM target not properly declared as dependency### Signing Issues```No signing certificate "iOS Development" found```- Certificate not installed in Keychain- Provisioning profile expired or missing- Bundle identifier mismatch### Module Not Found```No such module 'SomeFramework'```- SPM dependency not resolved - run `swift package resolve`- Framework search paths incorrect- Build order issue - dependency not built first## Output FormatThe script outputs JSON with:- `errors`: Array of errors with file, line, message, category- `error_groups`: Errors grouped by category- `root_cause_candidates`: Most likely root cause errors- `fix_suggestions`: Suggested fixes based on error patterns---> Converted and distributed by [TomeVault](https://tomevault.io/claim/invokedev) — claim your Tome and manage your conversions.

Frequently asked questions