Skillintermediate

Language-Specific Guidance

```bash codeql database create codeql.db --language=python --source-root=. ```

Claude Code Knowledge Pack7/10/2026

Overview

Language-Specific Guidance

No Build Required

Python

codeql database create codeql.db --language=python --source-root=.

Framework Support:

Django, Flask, FastAPI: Built-in models
Tornado, Pyramid: Partial support
Custom frameworks: May need data extensions

Common Issues:

Issue	Fix
Missing Django models	Ensure `settings.py` is at expected location
Virtual env included	Use `paths-ignore` in config
Type stubs missing	Install `types-*` packages before extraction

JavaScript/TypeScript

codeql database create codeql.db --language=javascript --source-root=.

Framework Support:

React, Vue, Angular: Built-in models
Express, Koa, Fastify: HTTP source/sink models
Next.js, Nuxt: Partial SSR support

Common Issues:

Issue	Fix
node_modules bloat	Already excluded by default
TypeScript not parsed	Ensure `tsconfig.json` is valid
Monorepo issues	Use `--source-root` for specific package

Go

codeql database create codeql.db --language=go --source-root=.

Framework Support:

net/http, Gin, Echo, Chi: Built-in models
gRPC: Partial support
Custom routers: May need data extensions

Common Issues:

Issue	Fix
Missing dependencies	Run `go mod download` first
Vendor directory	CodeQL handles automatically
CGO code	Requires `--command='go build'` with CGO enabled

Ruby

codeql database create codeql.db --language=ruby --source-root=.

Framework Support:

Rails: Full support (controllers, models, views)
Sinatra: Built-in support
Hanami: Partial support

Common Issues:

Issue	Fix
Bundler issues	Run `bundle install` first
Rails engines	May need multiple database passes

Build Required

C/C++

# Make
codeql database create codeql.db --language=cpp --command='make -j8'

# CMake
codeql database create codeql.db --language=cpp \\
  --source-root=/path/to/src \\
  --command='cmake --build build'

# Ninja
codeql database create codeql.db --language=cpp \\
  --command='ninja -C build'

Build System Tips:

Build System	Command
Make	`make clean && make -j$(nproc)`
CMake	`cmake -B build && cmake --build build`
Meson	`meson setup build && ninja -C build`
Bazel	`bazel build //...`

Common Issues:

Issue	Fix
Partial extraction	Ensure `make clean` before CodeQL build
Header-only libraries	Use `--extractor-option cpp_trap_headers=true`
Cross-compilation	Set `CODEQL_EXTRACTOR_CPP_TARGET_ARCH`

Java/Kotlin

# Gradle
codeql database create codeql.db --language=java --command='./gradlew build -x test'

# Maven
codeql database create codeql.db --language=java --command='mvn compile -DskipTests'

Framework Support:

Spring Boot: Full support
Jakarta EE: Built-in models
Android: Requires Android SDK

Common Issues:

Issue	Fix
Missing dependencies	Run `./gradlew dependencies` first
Kotlin mixed projects	Use `--language=java` (covers both)
Annotation processors	Ensure they run during CodeQL build

Rust

codeql database create codeql.db --language=rust --command='cargo build'

Common Issues:

Issue	Fix
Proc macros	May require special handling
Workspace projects	Use `--source-root` for specific crate
Build script failures	Ensure native dependencies are available

C#

# .NET Core
codeql database create codeql.db --language=csharp --command='dotnet build'

# MSBuild
codeql database create codeql.db --language=csharp --command='msbuild /t:rebuild'

Framework Support:

ASP.NET Core: Full support
Entity Framework: Database query models
Blazor: Partial support

Common Issues:

Issue	Fix
NuGet restore	Run `dotnet restore` first
Multiple solutions	Specify solution file in command

Swift

# Xcode project
codeql database create codeql.db --language=swift \\
  --command='xcodebuild -project MyApp.xcodeproj -scheme MyApp build'

# Swift Package Manager
codeql database create codeql.db --language=swift --command='swift build'

Requirements:

macOS only
Xcode Command Line Tools

Common Issues:

Issue	Fix
Code signing	Add `CODE_SIGN_IDENTITY=- CODE_SIGNING_REQUIRED=NO`
Simulator target	Add `-sdk iphonesimulator`

Extractor Options

Set via environment variables: CODEQL_EXTRACTOR__OPTION_=

C/C++ Options

Option	Description
`trap_headers=true`	Include header file analysis
`target_arch=x86_64`	Target architecture

Java Options

Option	Description
`jdk_version=17`	JDK version for analysis

Python Options

Option	Description
`python_executable=/path/to/python`	Specific Python interpreter