---
name: "gdlpp"
section: "1"
platform: "linux"
package: "grcompiler"
version: "5.2.1-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/gdlpp"
---

# gdlpp(1)

GDL (Graphite Description Language) preprocessor

## NAME

**gdlpp** - GDL (Graphite Description Language) preprocessor

## SYNOPSIS

```
gdlpp [options] [infile [outfile] ]
```

## OPTIONS

- **-B**

  No machine specific built-in symbols

- **-b**

  Output any parentheses, brace or bracket unbalance

- **-C**

  Write source file comments to output

- **-D**

  Define a symbol with the given (optional) value "symbol\[=value\]"

- **-d**

  Display all specified *options*

- **-E**

  Ignore non-fatal errors

- **-F**

  Output all included file names on stderr

- **-f**

  Output all defined functions' names on stderr

- **-H**

  Output all whitespaces from the source file

- **-h**

  Output this help text

- **-I**

  Add directory to the #include search list

- **-J**

  Allow nested comments

- **-j**

  Enable warnings for nested comments

- **-LL**

  Don't output #line instructions

- **-L**

  Don't output the 'line' keyword in "#line" instructions

- **-M**

  Don't warn for missing include files

- **-N**

  Don't predefine target-specific names

- **-n**

  Toggle prefs usage

- **-P**

  Don't recognize C++ comment style

- **-p**

  Enable warnings on non ANSI preprocessor instructions

- **-Q**

  Ignore but visualize undefined flags

- **-q**

  Ignore all undefined flags

- **-R**

  Evaluate the right part first in symbol concatenations

- **-s**

  Include the following string at the top of each function

- **-S**

  Specify sizes for #if sizeof

- **-t**

  This function should not get an initial function

- **-U**

  Undefine symbol

- **-V**

  Output version information

- **-W**

  Output all #defines

- **-WWW**

  Web mode preprocessing

- **-w**

  Only output #defines

- **-X**

  Include file