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For other information, see the Ghostscriptoverview and the instructions on how to installGhostscript.General overviewThis document describes how to build a Ghostscript executable from sourcecode. There are four major steps to building Ghostscript:Acquire the compressed archive files of source code for Ghostscript andthe required third-party libraries.Unpack the archive files into the Ghostscript directory and correctlynamed subdirectories.Configure the build to match your system and desired configuration options.Invoke \"make\" to build the software.The remainder of this document describes each of these steps in detail.Note that some of this process is platform-dependent. After buildingGhostscript you must then install it; for that, see theinstallation instructions.How to acquire the source codeBuilding Ghostscript requires the Ghostscript source code itself, and alsothe source code for some third-party libraries that Ghostscript uses.Ghostscript source codeThere are two kinds of Ghostscript distributions available, called \"AFPLGhostscript\" and \"GPL Ghostscript\"; the distinction between them isexplained in the conditions for distributingGhostscript. The authoritative distribution site for AFPLGhostscript is \"###\" is the unpunctuated version number. GPL Ghostscript is available from the same site at source code is packaged in two different formats:gzip-compressed tar files (*.tar.gz) and zip files(*.zip). For all versions there are gzip-compressed tarfiles:ghostscript-#.##.tar.gzghostscript-fonts-std-#.##.tar.gzghostscript-fonts-other-#.##.tar.gzFor recent versions of Ghostscript there are also zip filesgs###src.zipgs###w32.exe(\"#.##\" and \"###\" are version numbers in punctuated and unpunctuated form.)Software to decompress and extract both formats is available for almostevery platform for which Ghostscript is available -- including Unix, DOS,MS Windows, and VMS -- so you can choose the format most convenient foryou; but it's up to you to locate that software. See the section on unpacking the source code.Third-party library source codeTo build Ghostscript you need the source code for the Independent JPEG Group (IJG) library, thePortable Network Graphics(PNG)library, and the zlibcompression and decompression library. The default build also expects sourcefor the jbig2dec JBIG2 decompressionlibrary.On Windows and MacOS, the .zip and .sit source archives include the appropriate source versions of these libraries, so no additional downloads are necessary.Unix tarballs may also contain appropriate library source; the configure scriptwill tell you if it cannot find the appropriate libraries.Here are authoritative distribution points for these libraries, should you needto obtain the source yourself. As elsewhere, \"#\" is used for versionnumbers. The JPEG source code is quite stable, so the referencehere includes the latest version number. Versions of the zlib source are not compatible between the 1.1.x and 1.2.x series; if you wish to compile in zlib (as opposed to linking to a separately build dynamic library) you must use a 1.2.x version.Third-party libraries: authoritative sourcesJPEG -#.#.#.tar.gz -#.#.#.tar.gz (latest) -1.2.1.tar.gz See the official website for a list of mirrors.jbig2dec _id=28301On DOS or MS Windows one ordinarily uses the zip file kits, in otherenvironments the compressed tar files, but this is simply a matter ofconvenience, since for the same version of the software the compressed tarfile has the same contents as the zip file. Note that each of theselibraries has its own version number that hasnothing to do with Ghostscript's version number; you shouldget the highest numbered version. (If you encounter difficulties in thebuild process you might have to use a lower-numbered version, but don'tworry about this yet.) If you're running Linux, you might check whetherthese libraries are already available in source form on your system, sincemany Linux distributors include them; but we advise you to get the highestversion from the Net if you can.How to unpack the source codeUnfortunately there are no generally accepted standards for how to packagesource code into archives, so the instructions for unpacking Ghostscript arelonger than they should be. We begin with a brief explanation of how toextract the two kinds of archive files.How to unpack compressed tar files generallyTar (.tar) files are the de facto standard forarchiving files on Unix (every Unix system has the tarprogram), and programs to extract their contents are also widely availablefor DOS, MS Windows, and VMS. To economize on space and downloading time,Ghostscript's tar files are compressed with GNU gzip, whichadds the suffix \".gz\" to the file name, giving\".tar.gz\".To unpack a compressed tar file MyArchive.tar.gz youmust both decompress it and extract the contents. You can do this in twosteps, one to decompress the file and another to unpack it:gzip -d MyArchive.tar.gztar -xf MyArchive.taror in a pipeline:gzip -d -c MyArchive.tar.gz tar -xf -or, if you have a program like GNU tar that can handlecompressed tar files, with a single command:tar -zxf MyArchive.tar.gzThe tar program automatically preserves directory structurein extracting files. The Ghostscript source archive puts all files under adirectory gs#.##, so using tar to unpack acompressed archive should always properly create that directory, which wewill call the \"gs directory\". Make sure you're positioned in theparent of the gs directory before unpackingthe files. If a subdirectory doesn't already exist, tarcreates it.Some other programs -- under MS Windows, for instance -- can also unpackcompressed tar files, but they may not automatically preserve directorystructure nor even extract files into the current directory. If you useone of these, you mustset the program's options to \"Use folder names\" or the equivalent, andcheck that it is extracting files into the right place.How to unpack zip files generallyZip files are the de facto standard for archiving files on DOS andMS Windows, and programs to extract their contents are widely available forDOS, MS Windows, Unix, VMS, and other platforms. Zip files are at once anarchive format and a compressed format, so an unzipping programdecompresses and extracts archived files as a single step.One common 16-bit DOS program is pkunzip, which comes inthe pkzip package. If you use this, you should ensure thatyou have at least version 2.04g, because with its -dswitch, that version of pkunzip preserves the directorystructure of archived files when extracting them; see below. Anotherpopular free program to unpack zip archives, available for DOS and MSWindows (16-bit and 32-bit), Unix, VMS, and other platforms, is InfoZIPunzip: -zip.org/pub/infozip/UnZip.htmlUnlike pkunzip, InfoZIP unzip automaticallypreserves the directory structure of extracted files. So if you have a ziparchive MyArchive.zip:Extracting zipped filesCommand Preserves directory structurepkunzip MyArchive.zip Does NOTpkunzip -d MyArchive.zip DOES (note the -d switch)unzip MyArchive.zip DOESAs with the compressed tar files, make sure you're positioned in theparent of the gs directory before unpackingthe files. If a subdirectory doesn't already exist, zip orpkunzip -d creates it.How to unpack Ghostscript itselfAt this point you have acquired all the source codeand are ready to unpack it according to the preceding guidelines for tar files or zip files. Tounpack the Ghostscript source, make the parent of the (new)gs directory the current directory.2-step: gzip -d ghostscript-#.##.tar.gztar -xf ghostscript-#.##.tarPipe: gzip -d -c ghostscript-#.##.tar.gz tar -xf -GNU tar: tar -zxf ghostscript-#.##.tar.gzpkunzip: pkunzip -d gs###sr1.zippkunzip -d gs###sr2.zip...unzip: unzip gs###src.zipAll the Ghostscript source files are now in subdirectories of the gsdirectory.Source subdirectoriesSubdirectory Contentssrc/ C source code and makefileslib/ PostScript files and scripts used when running Ghostscriptdoc/ Documentationman/ Unix man pagesexamples/ Sample PostScript filesHow to unpack the third-party librariesThe Ghostscript makefiles expect to find the JPEG, PNG, and zlib source codein specific subdirectories of the gs directory, and thismeans you must pay careful attention to unpacking the source code for thesepackages. Use the same method for all of them, no matter how they'repackaged:Make the gs directory current.Unpack the archive file, creating a subdirectory (which will include aversion number).Whatever the subdirectory's original name, rename it to the versionlessname shown just below.If you're uncertain how to unpack an archive, review the sections on compressed tar files and zipfiles.3d-party software subdirectoriesPackage Possibleoriginal name Rename toJPEG ./jpeg-6b ./jpegPNG ./libpng-#.## ./libpngzlib ./zlib-#.#.# ./zlibLuratech compressor librariesGhostscript has optional support for the Luratech proprietary JBIG2 and JPEG 2000 implementations. If you have the source code for these and wish the compile them into Ghostscript, the build system expects them to be in directories named ldf_jb2 and lwf_jb2 in the top level gs source directory, alongside the other third-party libraries.How to check for post-release bug fixesBug information and fixes are tracked on Ghostscript Bugzilla.For more information, please visit to prepare the makefilesThe Ghostscript makefiles are very large and complex in order to deal withthe diverse requirements of all the different systems where they may beused.Ghostscript has an automatic configuration script. If you're on unix ora system that supports unix shell scripts, this is the easiest option to use.Simply type:./configurefrom the top level of the ghostscript source directory. It should configureitself based on what's available on your system, warn you of any missingdependencies, and generate a Makefile. At this point you can skip to thesection invoking make below. Also, many common configuration options (like install location) can be set through o