GCC 6 CPP 官方文档

1. Overview

1. Overview

1.1. Character sets

1.2. Initial processing

1.3. Tokenization

1.4. The preprocessing language

2. Header Files

2. Header Files

2.1. Include Syntax

2.2. Include Operation

2.3. Search Path

2.4. Once-Only Headers

2.5. Alternatives to Wrapper #ifndef

2.6. Computed Includes

2.7. Wrapper Headers

2.8. System Headers

3. Macros

3. Macros

3.1. Object-like Macros

3.2. Function-like Macros

3.3. Macro Arguments

3.4. Stringification

3.5. Concatenation

3.6. Variadic Macros

3.7. Predefined Macros

3.7.1. Standard Predefined Macros

3.7.2. Common Predefined Macros

3.7.3. System-specific Predefined Macros

3.7.4. C++ Named Operators

3.8. Undefining and Redefining Macros

3.9. Directives Within Macro Arguments

3.10. Macro Pitfalls

3.10.1. Misnesting

3.10.2. Operator Precedence Problems

3.10.3. Swallowing the Semicolon

3.10.4. Duplication of Side Effects

3.10.5. Self-Referential Macros

3.10.6. Argument Prescan

3.10.7. Newlines in Arguments

4. Conditionals

4. Conditionals

4.1. Conditional Uses

4.2. Conditional Syntax

4.2.1. Ifdef

4.2.2. If

4.2.3. Defined

4.2.4. Else

4.2.5. Elif

4.3. Deleted Code

5. Diagnostics

5. Diagnostics

6. Line Control

6. Line Control

7. Pragmas

7. Pragmas

8. Other Directives

8. Other Directives

9. Preprocessor Output

9. Preprocessor Output

10. Traditional Mode

10. Traditional Mode

10.1. Traditional lexical analysis

10.2. Traditional macros

10.3. Traditional miscellany

10.4. Traditional warnings

11. Implementation Details

11. Implementation Details

11.1. Implementation-defined behavior

11.2. Implementation limits

11.3. Obsolete Features

11.4. Differences from previous versions

12. Invocation

12. Invocation

13. Environment Variables

13. Environment Variables

Index

index