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https://github.com/logological/gpp

GPP, a generic preprocessor
https://github.com/logological/gpp

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GPP, a generic preprocessor

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README 

        
GPP

===



**[GPP](https://logological.org/gpp)** is a general-purpose

preprocessor with customizable syntax, suitable for a wide range of

preprocessing tasks. Its independence from any one programming

language makes it much more versatile than the C preprocessor (cpp),

while its syntax is lighter and more flexible than that of

[GNU m4](https://www.gnu.org/software/m4/). There are built-in macros

for use with C/C++, LaTeX, HTML, XHTML, and Prolog files.



GPP is [Free Software](https://www.gnu.org/philosophy/free-sw.html). It

is distributed under the terms of the [GNU Lesser General Public

Licence](https://www.gnu.org/copyleft/lgpl.html).



Obtaining GPP

-------------



You can download portable source packages (as `.tar.bz2` files) for

the current and previous releases on

[GitHub](https://github.com/logological/gpp/releases) or

[nothingisreal.com](https://files.nothingisreal.com/software/gpp/).



Alternatively, you can [browse, download, or clone the development

version on GitHub](https://github.com/logological/gpp/), though note

that if you do this you will need to manually set up the build system

using the GNU Autotools rather than using the end-user installation

instructions described below.



Installation

------------



To configure, build, and install from the portable source packages,

see the included `INSTALL` file. (In brief, `./configure && make &&

make install` should work in most cases, provided you have `make` and

a C compiler installed.)



For other systems, including Microsoft Windows, you may be able to

follow the `INSTALL` instructions with the help of a Unix-like

environment such as [Cygwin](http://cygwin.com/)

or [MSYS](http://www.mingw.org/wiki/msys).  Failing that, copy the

file `config.h.in` to `src/config.h`.  Open the file and follow the

instructions inside to modify it based on your system's capabilities.

Then use a C compiler to compile the `gpp.c` file in the `src`

subdirectory with the macro `HAVE_CONFIG_H` defined.  On Microsoft

Windows systems, you may need to also define the macro `WIN_NT` if

your compiler does not already define it by default.



Links to binary packages for various operating systems are available

on the [GPP home page](https://logological.org/gpp).



Documentation

-------------



Extensive documentation, including usage examples, is included in the

portable source package and should get installed automatically as a

man page and an HTML file.  The HTML version is also available online

on the [GPP home page](https://logological.org/gpp).



Note that the documentation itself is generated by GPP using an input

file ([`gpp.pp`](doc/gpp.pp)) with macros that can automatically

produce HTML, LaTeX, or troff (man page) output.  Studying this file

should prove instructive, and manually running it through GPP can

serve as a basic test of the program's functionality.  Once you have

installed GPP, you can invoke it as follows to get instructions on how

to manually generate the documentation: `gpp -H /path/to/gpp.pp`



Citing GPP

----------



To refer to GPP in a publication, please use the following citation:



> Tristan Miller and Denis Auroux. [GPP, the generic preprocessor](https://dx.doi.org/10.21105/joss.02400). _[Journal of Open Source Software](https://joss.theoj.org/)_, 5(51), July 2020. ISSN 2475-9066. DOI: [10.21105/joss.02400](https://dx.doi.org/10.21105/joss.02400).



Contributing

------------



Contributions are welcome.  Please post bug reports, feature requests,

and support requests on the [issue

tracker](https://github.com/logological/gpp/issues).  Feel free to

fork the project and send [pull

requests](https://help.github.com/articles/using-pull-requests/) for

integration into the main distribution.