CODEWITHSUNDEEP
c-preprocessor
claws
claws

Reputation: 54100

Is there any C preprocessor as an independent program?

I know that C preprocessor exists as part of compiler. But I'm looking for an independent program. Is there any such tool?

Upvotes: 6

Views: 1205

Answers (6)

Glenn McAllister
Glenn McAllister

Reputation: 1823

I've used filepp for preprocessing files other than straight C. It's a Perl module, so it's pretty portable. It's handy in that you can use all the familiar idioms you are used to, and adds some useful features.

From the web site:

Why filepp and not plain old cpp?

cpp is designed specifically to generate output for the C compiler. Yes, you can use any file type with it, but the output it creates includes loads of blank lines and lines of the style:

# 1 "file.c"

Obviously these lines are very useful to the C-compiler, but no use in say an HTML file. Also, as filepp is written in Perl, it is 8-bit clean and so works on any character set, not just ASCII characters. filepp is also customisable and hopefully more user friendly than cpp.

Upvotes: 3

NPE
NPE

Reputation: 500297

It's often called cpp. For example, on my Linux box:


CPP(1)                                GNU                               CPP(1)

NAME
       cpp - The C Preprocessor

SYNOPSIS
       cpp [-Dmacro[=defn]...] [-Umacro]
           [-Idir...] [-iquotedir...]
           [-Wwarn...]
           [-M|-MM] [-MG] [-MF filename]
           [-MP] [-MQ target...]
           [-MT target...]
           [-P] [-fno-working-directory]
           [-x language] [-std=standard]
           infile outfile

This particular one is part of gcc and is available for a wide variety of platforms.

Upvotes: 11

epatel
epatel

Reputation: 46051

You can also have a look at m4

What is m4?

M4 can be called a “template language”, a “macro language” or a “preprocessor language”. The name “m4” also refers to the program which processes texts in this language: this “preprocessor” or “macro processor” takes as input an m4 template and sends this to the output, after acting on any embedded directives, called macros.

Upvotes: 4

knarf
knarf

Reputation: 2732

mcpp.

From the homepage:

mcpp is a C/C++ preprocessor with the following features.

  • Implements all of C90, C99 and C++98 specifications.
  • Provides a validation suite to test C/C++ preprocessor's conformance and quality comprehensively. When this validation suite is applied, mcpp distinguishes itself among many existing preprocessors.
  • Has plentiful and on-target diagnostics to check all the preprocessing problems such as latent bug or lack of portability in source code.
  • Has #pragma directives to output debugging information.
  • Is portable and has been ported to many compiler-systems, including GCC and Visual C++, on UNIX-like systems and Windows.
  • Has various behavior modes.
  • Can be built either as a compiler-specific preprocessor to replace the resident preprocessor of a particular compiler system, or as a compiler-independent command, or >even as a subroutine called from some other main program.
  • Provides comprehensive documents both in Japanese and in English.
  • Is an open source software released under BSD-style-license.

Upvotes: 4

khachik
khachik

Reputation: 28693

It is a part of the package, and usually called cpp (C PreProcessor).

which cpp
# /usr/bin/cpp
man cpp

Upvotes: 1

Ryan Li
Ryan Li

Reputation: 9330

cpp is just one. It's a separated program called by gcc when compiling.

Upvotes: 1

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