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Text File | 1997-06-19 | 61KB | 1,503 lines

Copyright (C) 1989, 1995, 1996, 1997 Aladdin Enterprises. All rights reserved. This file is part of Aladdin Ghostscript. Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or distributor accepts any responsibility for the consequences of using it, or for whether it serves any particular purpose or works at all, unless he or she says so in writing. Refer to the Aladdin Ghostscript Free Public License (the "License") for full details. Every copy of Aladdin Ghostscript must include a copy of the License, normally in a plain ASCII text file named PUBLIC. The License grants you the right to copy, modify and redistribute Aladdin Ghostscript, but only under certain conditions described in the License. Among other things, the License requires that the copyright notice and this notice be preserved on all copies. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This file, make.txt, describes how to build Ghostscript executables from source. For an overview of Ghostscript and a list of the documentation files, see README. ******** ******** Overview ******** ******** This document describes how to build a Ghostscript executable from source code. There are 4 major steps to building Ghostscript: 1) Acquire the source code. 2) Unpack the source code. 3) Prepare the makefiles, including making edits for your operating environment and configuration choices. 4) Invoke 'make'. The remaining sections of this document describes each of these steps in detail. Note that parts of these steps are platform-dependent. After you have built Ghostscript, please refer to install.txt for instructions on installing it. ******** ******** Acquiring the source code ******** ******** To build Ghostscript, you need the Ghostscript source code itself, and the source code for some third-party libraries that Ghostscript uses. Ghostscript itself ------------------ The authoritative distribution directory for Aladdin Ghostscript is ftp://ftp.cs.wisc.edu/ghost/aladdin GNU Ghostscript should be available on all GNU sites. There are 3 different cases for retrieving the source files. (1) If neither (2) nor (3) below applies to you, you need: ghostscript-#.##.tar.gz ghostscript-fonts-std-#.##.tar.gz ghostscript-fonts-other-#.##.tar.gz where #.## is the version number. (The second part of the version number may have either 1 or 2 digits.) (2) If you are building Aladdin Ghostscript (not GNU Ghostscript) on MS-DOS or MS Windows, and you don't have (and don't want to acquire) the tar and gzip programs, you can get: gs###fn*.zip gs###sr*.zip instead of the .tar.gz files, if the .zip files are available for the version you want. (3) If you are building Ghostscript on MS-DOS or MS Windows and using .tar.gz files, rename the files as gs###sr.taz gs###fn1.taz gs###fn2.taz respectively when you retrieve them. You will need compatible PC executable versions of the tar and gzip programs in this case. Third-party libraries --------------------- You need the source code for the Independent JPEG Group (IJG) library, the PNG library, and the zlib library in order to build Ghostscript. The authoritative distribution points for these libraries are, respectively: IJG library: ftp.uu.net:/graphics/jpeg/jpegsrc.v##.tar.gz ftp.simtel.net:/pub/simtelnet/msdos/graphics/jpegsr##.zip PNG library: ftp://swrinde.nde.swri.edu/pub/png/src/ libpng-#.##.tar.gz lpng###.zip (or possibly lbpng###.zip or lp###.zip) zlib library: ftp://ftp.uu.net/pub/archiving/zip/zlib/ zlib-#.#.#.tar.gz zlib###.zip Get the .zip files if you are building on MS-DOS or MS Windows, the .tar.gz files for all other environments. Note that each of these libraries has its own version numbers that have nothing to do with Ghostscript version numbers; you should get the highest numbered version. (You may have to go back and get a lower-numbered version if you encounter difficulties in the build process, but don't worry about this yet.) If you're running Linux, you might check whether these libraries are already available in source form on your system, since many Linux distributors include them; but we advise you to get the highest version from the Net if you can. Even though the .zip archive of some old versions of the PNG library may be named something other than lpng###.zip, we'll refer to this archive as lpng###.zip below, so you might want to rename it after getting it to avoid confusion. ******** ******** Unpacking the source code ******** ******** Unfortunately, there are no generally accepted standards for how to package source code into archives, so the instructions for unpacking Ghostscript are longer than they should be. The Ghostscript sources normally go into a directory named gs#.##, where again #.## is the Ghostscript version number. For the remainder of this document, we will refer to the gs#.## directory as the "gs directory". To unpack a .tar.gz archive, you need the gzip and tar programs. Executable versions of these programs are normally available on all Unix systems, and are available from GNU sites (including source code) for other environments. The way to unpack a .tar.gz archive is gzip -d -c somefile.tar.gz | tar -xf - If your version of tar supports the -z switch for automatic decompression, you can use tar -zxf somefile.tar.gz To unpack a .zip archive in a Microsoft environment, you need the PKUNZIP program, which is normally delivered with the OS. To unpack a .zip archive, PKUNZIP somefile.zip We won't say anything more here about unpacking the fonts, since that is not part of the build process per se, but of installation. Ghostscript itself ------------------ The ghostscript-#.##.tar.gz archive unpacks all of the Ghostscript files into the directory ./gs#.##. The gs###sr*.zip archives also include the subdirectory name gs#.##, but some versions of PKUNZIP discard the directory name and always unpack into the current directory. If your version of PKUNZIP does this, you must MKDIR gs#.## CD gs#.## before unpacking the archive. Third-party libraries --------------------- The file names in the IJG archives (jpegsrc.v##.tar.gz or jpegsr##.zip) include a subdirectory name jpeg-##/, so you should unpack them in the same way as just described for the Ghostscript sources, except that you should make the gs directory current first, and the subdirectory name will be jpeg-##. (This will be a subdirectory of the gs directory, of course.) Unfortunately, the situation for the PNG and zlib libraries varies from release to release. If you are using the .tar.gz archives, then: - Before unpacking libpng-#.##.tar.gz, make the gs directory current. Unpacking will create a subdirectory named libpng-#.##. Rename this subdirectory as libpng. - Before unpacking zlib-#.#.#.tar.gz, make the gs directory current. Unpacking will create a subdirectory named zlib or zlib-#.#.#; if the latter, rename it as zlib. If you are using the .zip archives, and your version of PKUNZIP preserves directory information, follow the same steps as for the .tar.gz archives. If your version of PKUNZIP discards directory names: - Before unpacking lpng###.zip, make the gs directory current, and then MKDIR libpng CD libpng - Before unpacking zlib###.zip or zlib-###.zip, make the gs directory current, and then MKDIR zlib CD zlib ******** ******** Makefile overview ******** ******** The Ghostscript makefiles are very large and complex. Fortunately, the only makefiles you are likely to need to deal with are relatively small ones containing platform-specific information, as follows: ansihead.mak - Unix with ANSI C compilers other than gcc cc-head.mak - Unix with "traditional C" compilers gcc-head.mak - Unix with gcc watc.mak - MS-DOS with Watcom compilers bcwin32.mak - MS Windows with Borland compilers msvc4.mak - MS Windows with Microsoft Visual C++ version 4.n msvc5.mak - MS Windows with Microsoft Visual C++ version 5.n watcw32.mak - MS Windows with Watcom compilers openvms.mak - OpenVMS dgc-head.mak - DesqView/X with gcc os2.mak - OS/2 with the gcc/emx compiler Since the contents of these files change from one Ghostscript version to another, sometimes substantially, and since they all include documentation for the various options, we won't duplicate most of that documentation here: after reading the information below, we strongly recommend that you read the entire makefile for your OS and compiler before building Ghostscript. In Ghostscript versions 5.0*, watcw32.mak doesn't work, so we won't describe it further. For completeness, the platform-independent makefiles are: version.mak - identifies the version and release date gs.mak - documentation and miscellany lib.mak - the main makefile for the graphics engine int.mak - the main makefile for the PostScript/PDF interpreter jpeg.mak - the makefile for the IJG library libpng.mak - the makefile for the PNG library zlib.mak - the makefile for the zlib library devs.mak - the makefile for the device drivers ******** ******** Preparing the makefiles for your environment ******** ******** You may need to edit the platform-specific makefile if you wish to change any of the following: - The name of the makefile itself (MAKEFILE macro); - The default search path(s) for the initialization and font files (GS LIB_DEFAULT macro); - The debugging options (DEBUG and TDEBUG macros); - The set of device drivers to be included (DEVICE_DEVS and DEVICE_DEVS1..15 macros); - The set of optional features to be included (FEATURE_DEVS). The platform-specific makefile will include comments describing all of these items except the DEVICE_DEVS options; the available DEVICE_DEVS options (device drivers) are described in devs.mak, even though the file that must be edited is the platform-specific makefile. You should also check the JVERSION and PVERSION macros in the platform-specific makefile, and adjust them if they do not match the JPEG and PNG library versions you are using: see jpeg.mak and libpng.mak for more info. There are also platform-specific options described below under the individual platforms. See the "Options" section near the beginning of the relevant makefile for more information. If you are including a dot-matrix printer driver, you may wish to customize the default resolution parameters in devs.mak. Features and devices -------------------- When compiling Ghostscript, you may configure it with any of a variety of features, and with any subset of the available device drivers. You will find the complete list of features in a comment at the beginning of the file gs.mak, and the complete list of drivers in a comment at the beginning of devs.mak. To find out what devices a particular makefile selects for inclusion in the executable, find the line in the makefile of the form FEATURE_DEVS=<list of features> and DEVICE_DEVS=<list of devices> (similarly DEVICE_DEVS1... up to DEVICE_DEVS15) For example, if the makefile for Unix platforms defined FEATURE_DEVS=level2.dev indicating that only the PostScript Level 2 facilities should be included, you might wish to add FEATURE_DEVS=level2.dev pdf.dev to add the ability to interpret PDF files. (In fact, the current definition of FEATURE_DEVS in the Unix makefiles does include pdf.dev.) The Unix makefile also defines DEVICE_DEVS=x11.dev DEVICE_DEVS9=pbm.dev pbmraw.dev pgm.dev pgmraw.dev ppm.dev ppmraw.dev indicating that the X11 driver and all of the Portable Bit/Gray/PixMap file drivers should be included. (In fact, it includes many more drivers than this: see the Unix makefiles for the full list.) You may edit the FEATURE* lines to select any desired set of features (as listed near the beginning of gs.mak), and the DEVICE_DEVS* line(s) to select any desired set of device drivers (as listed near the beginning of devs.mak). The first device listed in the definition of DEVICE_DEVS will be used as the default device (unless overridden from the command line with -sDEVICE=xxx, of course.) If you can't fit all the devices on a single line, you may add lines defining DEVICE_DEVS2=<dev21>.dev ... <dev2n>.dev DEVICE_DEVS3=<dev31>.dev ... <dev3n>.dev etc. up to DEVICE_DEVS15. Don't use continuation lines -- this doesn't work on some platforms. LZW compression --------------- It is possible to substitute an LZW compressor for the LZW-compatible encoder provided with the standard fileset, by finding the two lines in lib.mak that read lzwe_=slzwce.$(OBJ) slzwc.$(OBJ) #lzwe_=slzwe.$(OBJ) slzwc.$(OBJ) and changing them to #lzwe_=slzwce.$(OBJ) slzwc.$(OBJ) lzwe_=slzwe.$(OBJ) slzwc.$(OBJ) If you do this, you are responsible for constructing or obtaining a file slzwe.c that implements LZW compression; such a file is not included in any current standard Ghostscript distribution, although you may be able to find one in distributions that predate Unisys' amnesty cutoff of January 1, 1995. You are also responsible for drawing your own conclusions about the applicability to LZW compression code of patents held by Unisys and/or IBM, and for obtaining any licenses you believe to be relevant. Creating 'makefile' ------------------- As the final step in preparing the makefile, you need to associate the name 'makefile' with the correct makefile for your environment as follows. On Unix systems, execute: ln -s unix-gcc.mak makefile if you are using gcc, or ln -s unixansi.mak makefile if you are using another ANSI C compiler, or ln -s unix-cc.mak makefile if you are using a "traditional C" compiler. If your Unix system doesn't support symbolic links, omit the -s switch. Then, if you have edited any of the makefile components listed above, execute tar_cat On MS Windows with the Borland compiler, execute: echo !include "bcwin32.mak" >makefile On MS Windows with the Microsoft compiler, execute: echo !include msvc4.mak >makefile or echo !include msvc5.mak >makefile depending on whether you have MSVC++ version 4.x or 5.x. On MS-DOS or MS Windows with the Watcom compiler, add the line set DOS4G=quiet to your autoexec.bat file, and also execute: set DOS4G=quiet Then execute: echo !include watc.mak >makefile (for MS-DOS) or echo !include watcw32.mak >makefile (for MS Windows). ******** ******** Invoking 'make' ******** ******** The command make clean removes all the files created by the build process (relocatables, executables, and miscellaneous scratch files). If you want to save the executable, you should move it to another directory first. The command make builds Ghostscript without debugging options. The command make debug builds Ghostscript with debugging options and additional internal error checks. Ghostscript will be somewhat larger and slower, but it won't behave any differently unless you actually turn debugging options at execution time with the -DDEBUG or -Z command line switches (described in use.txt). On most platforms, these simple instructions don't quite work in one way or another: read the section on your platform below. Cross-compiling --------------- If you are compiling Ghostscript on machine X with a cross-compiler that generates code for machine Y, you need to do one extra step. Rather than simply giving the command make you must proceed in three steps. First, make arch.h Then edit arch.h to reflect the architecture of machine Y. Then, make ******** ******** How to build Ghostscript from source (PC version) ******** ******** The relevant makefiles are: Borland C++ 4.x, 32-bit MS Windows (3.1 + Win32s, 95, NT): bcwin32.mak Microsoft Visual C++ 4.x, 32-bit MS Windows: msvc4.mak Microsoft Visual C++ 5.x, 32-bit MS Windows: msvc5.mak Watcom C/386 or C++, 32-bit (extended) MS-DOS: watc.mak Watcom C/386 or C++, 32-bit MS Windows (DOESN'T WORK YET): watcw32.mak DJGPP, DESQview/X: dvx-gcc.mak cygwin32 gcc: unix-gcc.mak (see below) The options were chosen to strike a balance between RAM consumption and likely usefulness. To build Ghostscript, you need MS-DOS version 3.3 or later, and Borland C/C++ (4.0 or later), Microsoft Visual C++ (version 4.0 or later), Watcom C/386 (version 8.5 or later) or C++ (any version), or the free djgpp + go32 development system. Details are given below. As noted above, the default configuration generates an executable that assumes the directory where 'make' was run should be the final default directory for looking up the Ghostscript initialization and font files. To build the Ghostscript executable, all you need to do is give the command make You must have COMMAND.COM in your path to build Ghostscript. There is a special 'make' target that simply attempts to compile all the .c files in the current directory. Some of these compilations will fail, but the ones that succeed will go considerably faster, because they don't individually pay the overhead of loading the compiler into memory. So a good strategy for building the executable for the first time, or after a change to a very widely used .h file, is: make begin and then make to do the compilations that failed the first time. Note: if you get the Ghostscript sources from a Unix 'tar' file and unpack the file on a MS-DOS machine, the files will all have linefeed instead of carriage return + linefeed as the line terminator, which may make the C compiler unhappy. I don't know the simplest way to fix this: just reading each file into an editor and writing it back out again may be sufficient. You will probably have to do this to the .c, .h, and .bat files. Borland environment ------------------- To compile Ghostscript with the Borland environment, you need Borland C++ (version 4.0 or later); specifically, the compiler, 'make' utility, and linker. You also need either the Borland assembler (version 1.0 or later) or the Microsoft assembler (version 4.0 or later). Besides the source files and the makefiles, you need: turboc.cfg (the flags and switches for Turbo C) gs.tr (the linker commands for the interpreter) *.bat (a variety of batch files used in the build process) There are extensive comments in the aforementioned .mak files regarding various configuration parameters. If your configuration is different from the following, you should definitely read those comments and see if you want or need to change any of the parameters: - The compiler files are in c:\bc and its subdirectories. - You are using the Borland assembler (tasm). - You want an executable that will run on any 32-bit PC-compatible, regardless of processor type (80386, 80486, Pentium, or compatible) and regardless of whether a math coprocessor (80x87) is present (only an issue with 80386 processors). NOTE: Borland C++ 4.52 has a bug that causes the 32-bit Windows executable to fail during startup. Borland has provided a patch for this bug on the file bc45xp1.zip, accessible as a link from http://loki.borland.com/cpp/Patchs.htm. NOTE: Borland C++ 5.0 and 5.01 have a code generator bug that generates incorrect code for the construct !file_is_valid(). Do not attempt to compile Ghostscript with these compilers. If you want to report this bug to Borland, send them the result of compiling ziodev.c and tell them to look at the code generated for file_is_valid() and !file_is_valid(). If building for the MS Windows Win32s environment, you need bcc32.cfg instead of turboc.cfg. The make process will stop after it has created genarch.exe. You should then run 'win genarch arch.h', wait until genarch has finished and then exit MS Windows. Then type 'make' again to restart the make process. If building for MS Windows NT, you also need bcc32.cfg instead of turboc.cfg, but the make process will run to completion automatically. Microsoft environment --------------------- To compile Ghostscript with the Microsoft environment, you need Microsoft Visual C++ 4.0 or later with its associated `nmake' utility and linker. Watcom environment ------------------ Before compiling, change the definition of the WCVERSION macro in the makefile (watc.mak or watcw32.mak) to the version of the Watcom compiler you are using. This is necessary to handle some minor incompatibilities between versions. To build Ghostscript, execute wmakebat This constructs a build script and then executes it. (This roundabout procedure is necessary because Watcom chose to implement wmake in a way that requires reading both the entire makefile and the entire current directory into the limited 640K MS-DOS address space.) Note that Watcom C/386 version 8.5 does not include wmakel (the 32-bit version of wmake). If this is the version that you have, use wmake instead, i.e., edit wmakebat.bat to change wmakel to wmake. If you get an "Error(F01): Out of memory" with Watcom 8.5, you may wish to try reducing the total size of the makefiles by editing devs.mak to remove drivers that you don't ever intend to use. If you still get this error, contact Watcom technical support; they will be able to send you the wmakel program, probably at no charge. DesqView/X and djgcc/djgpp environment -------------------------------------- The name of the makefile for this environment is dvx-gcc.mak. The DesqView/X port of Ghostscript was contributed by Tom Brosnan (tjb@chalone.stanford.edu), with further contributions by Stephen Turnbull (turnbull@shako.sk.tsukuba.ac.jp). It uses djgcc (DJ Delorie's MSDOS port of gcc) for compiling. djgcc assumes that go32.exe is in your search path. You need to set an environment variable to tell go32 where to put any paging files, e.g. set GO32TMP=e:/tmp If you don't have go32.exe, you can get it from Internet host oak.oakland.edu. The extender and minimum run-time environment are in the file djeoeXXX.zip, where XXX is the version number (currently 112). Patched versions of the extender (as well as other components) are found in the files djXXXmY.zip, XXX is again the compiler version, Y is the patchlevel. Y is currently 2. People who are just running the executable need only get the file with the highest level of Y that contains GO32.EXE and do "unzip -j djXXXmY go32.exe" (InfoZIP) or "pkunzip djXXXmY go32.exe" (PKWare), then move the extender to their PATH. If you do not have a hardware FPU, you will also need the floating point emulator EMU387 found in djeoeXXX.zip (and possibly in the patch releases as well). You MUST use an emulator designed to work with GO32; the emulators often found as TSRs will not work. See the file README found in djeoeXXX.zip, or the file README.1ST in pub/msdos/djgpp on Simtel for further information. The DJGPP v1.12 compiler suite is known to have problems with linking large file sets. If you run into this problem, you can work around it by using the v1.11 GO32 as follows: (1) get dj111m5.zip from turnbull.sk.tsukuba.ac.jp:/pub/djgpp/1.11 (2) unzip GO32.EXE. Be careful not to overwrite other versions! (3) rename it, eg, to GO111M5.EXE (4) move the renamed GO32.EXE to your path (5) stubedit ld.exe: (the stubedit utility is part of djeoe112.zip) (a) change the extender name to the one you chose in (3). The .EXE extension may be omitted (b) change the version required to 1.11 (c) accept the defaults for the remaining options. Stephen Turnbull observed the following two problems with DJGPP v2.0-beta2. (1) The v1.12 stdio.h defined a number of flags for manipulating the various characteristics of the streams being processed, such as _IORD, _IOWRT, etc. These are missing from v2.0-beta2. I don't know enough about the new libc.a to guess whether this is an oversight or these functions have a new (Posix?) interface. [Caveat: In Ghostscript the compiler error can be silenced by adding "#define _IOWRT 00002" to the file gp_dvx.c. I don't know that this is correct in the new libraries. I suspect there is no real loss in Ghostscript to removing the offending flag manipulation from gp_open_printer() in gp_dvx.c, as it is a performance optimization.] (2) The big problem is linking with third-party libraries not compiled with v2.0. In particular, QuarterDeck's contributed Xlib (compiled with DJGPP v1.12 (original release). Unfortunately, v1.12 uses the usual macros for character classification and implementation of the stdio streams. This leads to long lists of complaints from the linker about undefined references to '_ctype_' (the table of character type flags) and '_iob' (the table indexed by file descriptors) when processing Xlib functions. cygwin32 gcc ------------ A user has reported that it is possible to compile Ghostscript for MS Windows NT using the cygwin32 gcc compiler, GNU make, and the unix-gcc.mak makefile, with only two small source code changes: - Add a "b" to the call to fopen in "gp_open_scratch"; - Mirror the gp_ntfs logic for "gp_file_name_is_absolute". You can find more information about this compiler and environment on the Web at http://www.cygnus.com/misc/gnu-win32. However, we strongly discourage people from using this compiler for the following reason: Cygnus has chosen to put a necessary runtime library (libcygwin.a) under the GNU License and not under the GNU Library License. This means that if you compile and link your program with this compiler, your entire program becomes subject to the GNU License. Among other things, this means you are not allowed to distribute the results of compiling Aladdin Ghostscript (whose license is slightly more restrictive than the GNU License) with this compiler: you can only distribute the results of compiling GNU Ghostscript. By the time you read this document, Cygnus may have changed its licensing terms: if you're considering using this compiler, we strongly suggest that you go to the Cygnus Web site and find out the current terms. ******** ******** How to build Ghostscript from source (Mac version) ******** ******** There are additional Mac-specific source files in a separate distribution from the rest of Ghostscript. In addition to the standard Ghostscript sources, you will need the following files: macgs-v1.0-src.sit - the source files, StuffIt archive. manual.txt - the manual as unformatted text readme.txt - this file These should be in the mac directory located in the same place you retrieved the rest of the Ghostscript distribution. The first file is a StuffIt archive. If you do not have a program to expand it, you should get the free StuffIt Expander program from your favorite Macintosh archive. In the standard method of building Ghostscript, all of these files (except the jpeg) get unpacked into one big directory. The jpeg stuff gets unpacked into a directory called jpeg-6 in the main directory. The Macintosh stuff also gets unpacked into its own directory, called 'Mac Specific'. However, if you like (and I do) you can divide up all these files into the following hierarchy: Ghost Dev files -- all *.ps, *.txt, and other non-build files fonts -- all the fonts src -- *.c, *.h, *.mak jpeg-6 -- the jpeg files Mac Specific -- the mac files MPW Build -- empty directory used for building under MPW Once you get everything laid out, take a look at the file Worksheet in the mac specific folder for complete steps to build the system with either MPW or CodeWarrior. ******** ******** How to build Ghostscript from source (Unix version) ******** ******** The makefile distributed with Ghostscript selects the following devices for inclusion in the build: Display: X Windows. Printers: H-P DeskJets, LaserJets, and color DeskJets and PaintJets; Canon BubbleJets. File formats: Group 3 & Group 4 fax, JPEG, PCX, P*M (PBM/PGM/PPM), TIFF, PostScript images, PNG, distilled PDF, PostScript, and EPS, PCL XL ("PCL 6"). The unix-*.mak files are actually generated mechanically from *head.mak, *tail.mak, unix-end.mak, and the platform-independent makefiles by a script called tar_cat. If for some reason your copy of Ghostscript doesn't include the unix-*.mak files, run tar_cat to construct them. If you wish to edit any part of the makefile, DO NOT EDIT THE FILE NAMED makefile OR unix{ansi,-cc,-gcc}.mak. EDIT THE ORIGINAL COMPONENT MAKEFILE (*head.mak, *tail.mak, OR A PLATFORM-INDEPENDENT FILE) AND RUN tar_cat AGAIN. Consult tar_cat to find the names of the component files. The *head.mak files explicitly compile and link the libpng and zlib libraries into the executable. If your Unix system already includes these libraries (probably in /usr/lib/libpng.{a,so} and libz.{a,so}) and you would rather use the system copies, change the definition of SHARE_LIBPNG and/or SHARE_ZLIB from 0 to 1 in the relevant *head.mak file, run tar_cat, and recompile. Note that if you do this, you will get non-DEBUG versions of these libraries, even if you selected DEBUG in the Ghostscript makefile. The *head.mak files also compile and link the jpeg library into the executable. Ghostscript doesn't offer a SHARE option for this library, because in order to be compatible with Adobe interpreters, Ghostscript has to compile the code with the non-standard definition #define D_MAX_BLOCKS_IN_MCU 64 This is in contradiction to the JPEG standard, but at least some real PostScript files require this. A shared system library would not be compiled this way. If the X11 client header files are located in some directory which your compiler does not automatically search, you must change the XINCLUDE macro the makefile to include a specific -I switch. See the comment preceding XINCLUDE in the makefile. Currently Ghostscript is set up to compile and link in a generic Unix environment. Some Unix environments may require changing the LDFLAGS macro in the makefile. All you need to do to make an executable is invoke the shell command make Ghostscript uses ANSI syntax for function definitions. Because of this, when compiling with cc, it must preprocess each .c file to convert it to the older syntax defined in Kernighan and Ritchie, which is what most current Unix compilers (other than gcc) support. This step is automatically performed by a utility called ansi2knr, which is included in the Ghostscript distribution. The makefile automatically builds ansi2knr. The ansi2knr preprocessing step is included in the makefile rule for compiling .c files. ansi2knr creates a file called _temp_.c to hold the converted code. If you want to change this name for some reason, it is defined in unix-cc.mak. Platform-specific notes ======================= 386 Unix -------- gcc versions older than 1.38 on Intel 80386 systems do not compile Ghostscript correctly using the -O option. Do not use -O in these environments. gcc 1.39 under 386BSD has a bug that causes float-to-integer conversions to compile incorrectly. Do not use this version of gcc. X11R5 may need #include <stddef.h> in x_.h. Also see below regarding System V platforms. Alpha (AXP) ----------- The code generator in gcc 2.7.2.1 is broken, so you cannot use this version on the Alpha. gcc 2.5.8 and 2.6.3 are probably OK. Versions of gcc before 2.5.0 are believed not to work. If you really want to use gcc 2.7.x, here is a patch from a gcc maintainer: Tue Sep 24 19:37:00 1996 Jim Wilson <wilson@cygnus.com> * reload.c (push_secondary_reload): Change reload_mode to mode in SECONDARY_MEMORY_NEEDED and get_secondary_mem calls. *** reload.c.orig Sun Mar 9 14:05:23 1997 --- reload.c Sun Mar 9 14:06:54 1997 *************** push_secondary_reload (in_p, x, opnum, o *** 589,600 **** set it up now. */ if (in_p && icode == CODE_FOR_nothing ! && SECONDARY_MEMORY_NEEDED (class, reload_class, reload_mode)) ! get_secondary_mem (x, reload_mode, opnum, type); if (! in_p && icode == CODE_FOR_nothing ! && SECONDARY_MEMORY_NEEDED (reload_class, class, reload_mode)) ! get_secondary_mem (x, reload_mode, opnum, type); #endif } --- 589,600 ---- set it up now. */ if (in_p && icode == CODE_FOR_nothing ! && SECONDARY_MEMORY_NEEDED (class, reload_class, mode)) ! get_secondary_mem (x, mode, opnum, type); if (! in_p && icode == CODE_FOR_nothing ! && SECONDARY_MEMORY_NEEDED (reload_class, class, mode)) ! get_secondary_mem (x, mode, opnum, type); #endif } Apollo ------ You must run the compiler in ANSI-compatible mode (i.e., set AK= <null string> in the makefile); otherwise, it gives incorrect error messages for any function declared as returning a float value. The Apollo compiler may not compile Ghostscript correctly. If you get unexpected crashes at run time, use gcc. AT&T 7040 R3 ------------ If Ghostscript crashes on startup, recompile with -O0 in order to avoid triggering compiler bugs. Convex ------ Use unixansi.mak. Do not invoke optimization (-O1): there are compiler bugs that lead to incorrect code. Set CFLAGS to -no -fn -tm c1 DECStations ----------- You may get the following message (or a similar one) when compiling, due to a compiler bug: cfe: Fatal: _temp_19086.c: Segmentation violation If this happens, try compiling with the -oldc switch. DECStations with Ultrix ----------------------- You may wish to set GS_LIB_DEFAULT=$(gsdatadir):/usr/lib/DPS/outline/decwin:$(gsdatadir)/fonts in the makefile to add the Display PostScript font directory to the font search path. You may need to use make CFLAGS="-Olimit 1200" to tell the optimizer to allocate extra table space. The Ultrix 4.4 C compiler has a bug that makes it compile gdevm1.c incorrectly. Insert the following line in the makefile rule for gdevm1.$(OBJ) (the body of the rule is empty in the standard distribution): $(CCC) -oldc gdevm1.c Digital Unix ------------ Use the unixansi.mak file for all Digital Unix compilers. For versions of Digital Unix before 4.0, set CFLAGS=-O -migrate -std1 $(XCFLAGS) LDFLAGS=-lots $(XLDFLAGS) For versions starting with 4.0, you can omit the -migrate switch since this is the compiler default. gcc (all platforms) ------------------- There is an optimizer bug in gcc 2.7.0, 2.7.1, and 2.7.2 that causes these versions of gcc to generate incorrect code. You can work around this by adding the switch -Dconst= to the compilation switches (CFLAGS). Alternatively, you can rebuild gcc with the following patch: *** clean-ss-951203/expr.c Sun Nov 26 08:18:07 1995 --- ss-951203/expr.c Mon Dec 4 11:41:18 1995 *************** expand_expr (exp, target, tmode, modifie *** 4582,4587 **** through a pointer to const does not mean that the value there can never change. Languages where it can never change should also set TREE_STATIC. */ ! RTX_UNCHANGING_P (temp) = TREE_READONLY (exp) | TREE_STATIC (exp); return temp; } --- 4582,4588 ---- through a pointer to const does not mean that the value there can never change. Languages where it can never change should also set TREE_STATIC. */ ! RTX_UNCHANGING_P (temp) = TREE_READONLY (exp) & TREE_STATIC (exp); return temp; } If possible, compile with gcc 2.5.8, gcc 2.6.3, or gcc 2.7.2.1 or later, which don't have this bug. GNU make (any platform) ----------------------- Current versions of GNU `make' have no problems, but GNU make 3.59 can't handle the final linking step in some cases; use the platform's standard make (e.g., /bin/make) if this happens. H-P RISC workstations --------------------- There are conflicting reports about the correct set of flags to use for H-P's compilers. Formerly, we recommended using -Ae +O3 (*not* -O) -DNOSYSTIME, and possibly -D_POSIX_SOURCE. However, a user reports that on HP-UX 10.10, the correct set of flags is -Aa -D_HPUX_SOURCE -O $(XCFLAGS), and that the former set of flags produces a non-working executable. If you get the error message Initializing... Unrecoverable error: typecheck in .registerencoding Operand stack: .notdef 0 when you start Ghostscript, you need to install the following patches to fix bugs in H-P's C compiler: PHSS_5734, PHSS_5723. If you are using gcc 2.5.8, use -O, not -O2; the latter generates incorrect code for at least one module (gsimage.c). If you are using gcc 2.7.2, use -Dconst= (as described above), and also do not use -O at all: -O generates incorrect code. Intergraph Clipper ------------------ Recommended settings are: XCFLAGS=-w -Q -DSYSV -D__SVR3 EXTRALIBS=-lbsd -lc_s CC=acc -knr PLATFORM=sysv_ Also, you will probably need to change the X11 driver specification from $(SHP)gsaddmod x11 -lib Xt X11 Xext to $(SHP)gsaddmod x11 -lib Xt_s X11_s Xext ISC Unix -------- For ISC Unix with gcc, an appropriate make invocation is: make XCFLAGS="-D__SVR3 -posix" LDFLAGS="-shlib -posix" \ EXTRALIBS="-linet -lnsl_s" If this doesn't work for you, try removing the -shlib. ISC Unix may also need one or more of the following in EXTRALIBS: -lpt, -lc_s. See also under "386 Unix" above. Linux ----- If you are building on Linux with X11 R6 or later, you may get a list of error messages at link time about undefined references to various functions beginning with Smc and Ice. If this happens, make sure that XLIBS is set in the makefile to the list Xt SM ICE Xext X11 rather than just Xt Xext X11. If you are running gcc version 2.6.3 or later, you may run into problems because of an incompatibility in object formats ("a.out" vs. ELF) with the XFree86 library. The typical symptom is that ld will complain that some X library is not found or a whole slew of Xlib or Xt functions are not found in the library (similar to the messages for omitting SM and ICE from XLIBS), or you will get a message when you start Ghostscript that the program or the shared library is in unrecognized format. If this happens, you might try adding the switches -b i486-linuxaout to both CFLAGS and LDFLAGS in gcc-head.mak, and rebuilding from scratch ("make clean" and then "make"). If this doesn't help, or if other strange things happen, contact your Linux supplier or support resource. MIPS ---- There is apparently a bug in older versions of the MIPS C compiler which causes gxdither.c to compile incorrectly if optimization is enabled (-O). However, this bug is definitely fixed in MipsPRO C version 6.00; with this version, compiling with -O2 -mips2 produces good output. NCR 3550 -------- If you are using the NCR C Development Toolkit, you must use -O0 to avoid triggering compiler bugs. NeXTSTEP -------- Current NeXTSTEP versions require changing the definition of INCLUDE in unixtail.mak (and ugcclib.mak, if you are using only the library) to INCLUDE=/usr/include/bsd Don't forget to run tar_cat after you do this. For all NeXTSTEP systems, use unix-gcc.mak -- i.e., execute ln -s unix-gcc.mak Makefile For NeXTSTEP versions before 3.2: edit gcc-head.mak -> change CC=gcc to CC=cc add -D_NEXT_SOURCE to CFLAGS change the two occurrences of sys/time.h to ansi/time.h, and change <dirent.h> in gp_unifs.c to <sys/dirent.h> For NeXTSTEP 3.2 and later edit gcc-head.mak -> change CC=gcc to CC=cc add -D_POSIX_SOURCE and remove -g in CFLAGS remove -Wstrict-prototypes in GCFLAGS Add the following line to the end of Fontmap /Ohlfs /Courier ; If you are running the Pencom co-Xist X server (Development version), the X headers and libraries are in the default places, so you should change the definitions of XINCLUDE and XLIBDIRS in the makefile to empty strings. Pyramid MIServer-S ------------------ See AT&T 7040 R3. RS/6000 ------- Many versions of the AIX C compiler have bugs that have prevented Ghostscript from compiling and linking properly. We believe that the current Ghostscript release works around these bugs, and that using the unix-cc.mak makefile with CC=cc should work. You must also edit the makefile (unixansi.mak or unix-cc.mak) to change INSTALL to /usr/ucb/install. (If -DSYSV produces a complaint about the functions index and rindex not being defined, try removing it.) If the xlc 1.2.1 optimizer runs out of memory, you may need to add -qmaxmem=4000 to CFLAGS. A user has reported that the AIX C compiler shipped with AIX 3.2.5 only compiles Ghostscript if invoked with c89 -D_POSIX_SOURCE and *without* -O. On the other hand, another user reported successful compilation using the unix-ansi.mak makefile and the following command line: make CC=c89 XCFLAGS="-DOSY_AIX -D_ALL_SOURCE -qnoro -qmaxmem=3000 -bfl" $* Apparently some (but not all) releases of the C library declare the hypot function: if the declaration in math_.h produces an error message, try removing it. Also, the IBM X11R3 server is known to be buggy: use the MIT X server if possible. The xlc 1.3.0.x compiler provided in AIX 3.2.5+ definitely will not compile Ghostscript correctly if -O is used on all files. A user has reported that compiling the following files without -O is sufficient to produce a working executable: z*.c, gsmatrix.c, gxstroke.c. Some installations of AIX 3.2.5 have what appears to be an incorrect or inconsistent version of libXt.a in /usr/lpp/X11/lib. If you get XtShellStrings and XtStrings as unresolved externals when linking, set XLIBDIRS=-L/usr/lpp/X11/lib/R5 -L/usr/lpp/X11/lib rather than just XLIBDIRS=-L/usr/lpp/X11/lib. SCO Unix/Xenix -------------- The SCO Unix C compiler apparently can't handle the Pn macros in std.h. If you get strange compilation errors on SCO Unix, see if you can get a compiler fix from SCO. Meanwhile, to use gcc with SCO ODT, see gcc-head.mak for the appropriate switch settings. See also under "386 Unix" above. gcc 2.3.3 produces code that causes a core dump on machines that don't have hardware floating point, because of a bug in SCO's floating point emulator. Use a different compiler on these machines. If you aren't using the X11 driver, you need to add -lsocket to the linker command (near the end of the unix-*.mak file) in order to get the date/time functions linked in. If you want to use direct frame buffer addressing instead of X Windows, include the relevant frame buffer device(s) (ega.dev, vga.dev, etc.) and change gdevevga.c to gdevsco.c as indicated in devs.mak. Note: this does not work with SuperVGA displays, except for 800x600x16 mode. Note also: If the display looks "smeared", try recompiling gdevpcfb.c with -O0. Note also: if Ghostscript crashes, use the -q switch and/or redirect console output to a file. If your compiler accepts the -Xt and -Xa switches, use -Xt. Even though this causes the compiler to use incorrect rules for computing the result types of << and >>, -Xa enables "optimizations" that produce incorrect code. For SCO ODT 2.0, in addition to -D__SVR3 and -DSYSV, you need to specify -Dsco, -DUSG, and -DMALLOC_0_RETURNS_NULL. For SCO ODT, you need EXTRALIBS=-lX11 -lsocket -lmalloc, or maybe only -lsocket (depending on the version), and for SCO ODT 2.0, you also need to specify -lc_s. For SCO Xenix, you need EXTRALIBS=-lmalloc. For all SCO systems, set XINCLUDE= and XLIBDIRS=. Please also read the section on "System V Unix platforms" below. Silicon Graphics ---------------- Compiler option -Olimit 1200 is required to be able to compile all the code with optimization. Use compiler option -ansi with the SGI C compiler shipped with Irix 5.2. The SGI C compiler may produce warnings about "Undefined the ANSI standard library defined macro stdin/stdout/stderr". To suppress these warnings, add -woff 608 to the definition of CFLAGS. The SGI C compiler shipped with Irix 6.1 and 6.2 will not compile deflate.c (part of zlib) properly with optimization. If you want to use the zlib decompression filter, compile this file separately without -O. The MIPSpro 7.1 compiler produces incorrect output if you use -O3 or -Ofast=ip32 -show. Use only -O2. To install gcc 2.7.x on IRIX 6.x, please consult the Web page at http://reality.sgi.com/knobi/gcc-2.7.2.x-on-irix-6.2-6.3. Sun --- The Sun unbundled C compiler (SC1.0) doesn't compile Ghostscript properly if the -fast option is selected: Ghostscript core-dumps in build_gs_font. Use -g, or use gcc. The Sun version of dbx often gives up with an error message when trying to load Ghostscript. If this happens, use gdb instead. (gdb is more reliable than dbx in other ways as well.) There is a bug in zlib that results in an undefined symbol zmemcmp when compiling with Sun cc. Use gcc instead. SunOS ----- In SunOS 4.1.[23], you may get these undefined symbols when linking: _get_wmShellWidgetClass _get_applicationShellWidgetClass Compiling "-Bstatic -lXmu -Bdynamic" appears to work for SC1.0. For gcc, try adding "-static" to CFLAGS. To solve the problem if you are using OpenWindows 3.0 (X11R4-based Xt), please contact your local Sun office and request the following patches: Patch i.d. Description 100512-02 4.1.x OpenWindows 3.0 libXt Jumbo patch 100573-03 4.1.x OpenWindows 3.0 undefined symbols when using shared libXmu Solaris ------- Solaris 2.2 may require setting EXTRALIBS=-lsocket. Solaris 2.3 and 2.4 seem to require EXTRALIBS=-lnsl -lsocket. Solaris 2.n uses /usr/openwin/share/include for the X11 libraries rather than /usr/local/X/include. Solaris 2.n typically makes Type 1 fonts available in /usr/openwin/lib/X11/fonts/Type1/outline. For Solaris 2.n, you will need to change the definition of INSTALL in the makefile from install -c to /usr/ucb/install -c, since the Solaris version of 'install' requires install -c <directory> [-m <mode>] <file> rather than install [-c] [-m <mode>] <file> <directory> You may need to set XLIBDIR to the directory that holds the X11 libraries, as for other SVR4 systems. You should also set -DSVR4 in CFLAGS. If you are using the SunPRO C compiler, do not use optimization level -xO3. On SPARC platforms, the compiler hangs; on Intel platforms, the generated code is incorrect. Also, do not use the -native flag on Intel platforms: this makes floating point computations unacceptably inaccurate. You may use -xcg92 (SPARC V8) and/or -dalign to get better performance. SVR4 Unix platforms ------------------- You may need to set EXTRALIBS=-lnsl. Do *not* change PLATFORM=unix_ to PLATFORM=sysv_. On SVR4 Unix platforms that use dynamic linking, you may need to define XLIBDIR as the name of the directory that holds the X Windows libraries. Do *not* prefix this with -L. For SVR4.0 systems, set -DSVR4 -DSVR4_0 in the makefile; do *not* set -DSYSV. For SVR4.2 (or later) and Solaris 2.x systems, set -DSVR4 only (not -DSVR4_0 and not -DSYSV). System V Unix platforms ----------------------- If you are using a stock System V platform that lacks rename and gettimeofday, change PLATFORM=unix_ in the makefile to PLATFORM=sysv_. You will probably need to change the definition of INSTALL (near the beginning of the makefile) from install to /usr/ucb/install. VAX with Ultrix --------------- The above information about DECStations with Ultrix may be applicable. ******** ******** How to build Ghostscript from source (OS/2 version) ******** ******** The relevant makefile is: os2.mak The EMX/GCC 0.9b compiler and the IBM NMAKE.EXE are required. Before compiling or linking, you should execute copy os2.mak makefile Then to start the make process type nmake One DLL and two EXE's will be produced: gsdll2.dll (Ghostscript DLL), gsos2.exe (Ghostscript) and gspmdrv.exe (the Presentation Manager display driver). Some versions of this environment apparently require including $(COMPBASE)\lib\end.lib in the LINK386 command, and some do not. The current os2.mak file does include this file in the LINK386 command. If this causes problems in your environment, delete this part of the command. ******** ******** How to build Ghostscript from source (VMS aka OpenVMS version) **** ******** Many versions of DEC's X server have bugs that produce broad bands of color where dither patterns should appear, or characters displayed white on top of black rectangles or not displayed at all. If this happens, please consult the X Windows section of the use.txt file to find out how to work around these bugs using X resources; also report the problem to DEC, or whoever supplied your X server. You may also wish to turn off the use of a backing pixmap with Ghostscript, either to work around X server memory limitations or bugs, or to obtain faster displaying at the expense of no redrawing when a Ghostscript window is restored from an icon or exposed after being occluded by another window. Again, use.txt contains information on how to do this. If you add compiled fonts to your system as described in the fonts.txt file, then add "ccfonts.dev" to the FEATURE_DEVS symbol in VMS-CC.MAK, VMS-GCC.MAK, VMS-DECC.MAK, or OPENVMS.MAK, $ FEATURE_DEVS = "level2.dev ccfonts.dev" and then specify the font names with the ccfonts1 symbol $ ccfonts1 = "Courier Courier_Oblique Courier_Bold Courier_BoldOblique" If the line gets too long, add another line of the same form, e.g., $ ccfonts1 = "Courier Courier_Oblique Courier_Bold Courier_BoldOblique" $ ccfonts2 = "Times_Roman Times_Italic Times_Bold Times_BoldItalic" Using DCL command files ----------------------- Up through Ghostscript version 5.0, we provided DCL command files for building Ghostscript. We will no longer support this method in future versions, since we have found it almost impossible to keep the DCL scripts consistent with the makefiles that are used on all other platforms, and since using a 'make' program has other benefits such as recompiling only files that have changed. The files VMS-CC.MAK, VMS-GCC.MAK, and VMS-DECC.MAK are OpenVMS DCL command files which build Ghostscript from scratch using, respectively, the VAX C compiler, CC, the Free Software Foundation's GNU C compiler, GCC, or the DEC C compiler, CC. Accordingly, you must have one of these compilers installed in order to build Ghostscript. (Other C compilers may work: CC and GCC are the only two compilers tested to date. DEC C V4.0 or later is required: the DEC C V1.3 run-time library has bugs that prevent Ghostscript from working.) These command files build and store the Ghostscript library in the object library GS.OLB. If you have DECwindows (X11) installed on your system, the executable image GS.EXE will also be built. Some environments use the DWTLIBSHR library for providing the X Windows intrinsics, and some use the XTSHR library. XTSHR is newer, and is part of the DECwindows/Motif product. However, DEC is still distributing versions of VMS with DWTLIBSHR. If your environment uses XTSHR, replace DWTLIBSHR in the list of link libraries with XTSHR. For OpenVMS VAX platforms with VAX C, issue the DCL command $ @VMS-CC.MAK to build Ghostscript. For OpenVMS platforms with GNU C (either AXP or VAX), issue the DCL command $ @VMS-GCC.MAK to build Ghostscript. For OpenVMS platforms with DEC C (either AXP or VAX), issue the DCL command $ @VMS-DECC.MAK to build Ghostscript. The option "DEBUG" may be specified with either command file in order to build a debuggable Ghostscript configuration; e.g., $ @VMS-CC.MAK DEBUG Using GNU make -------------- As of Ghostscript version 5.0, the file OPENVMS.MAK, together with some auxiliary .COM files, allows using GNU make for building Ghostscript on OpenVMS. To do this, use the command: make -fopenvms.mak "OPENVMS={VAX,ALPHA}" "DECWINDOWS={1.2,<blank>}" i.e. specify either VAX or ALPHA as the value of the OPENVMS parameter, and either 1.2 or nothing (blank) as the value of DECWINDOWS. Unfortunately, GNU make, at least through version 3.75, does not run completely correctly under OpenVMS: you will have to rebuild it with some patches. We hope to be able to make available a precompiled executable with the patches in the near future. Meanwhile, however, here is a description of the necessary changes. The VAX and ALPHA edits have basically the same changes; the VAX C version has two edits in the [.GLOB] directory, to address a 'C' preprocessor limitation with VAX C. The remaining changes attempt to address the lack of consistency with "C" compilers and POSIX functionality, or the lack of it. Of course depending on what version of OpenVMS you have, versions of compilers (VAX C, DEC C on VAX or DEC on Alpha), these changes may be slightly different. ========================================================= Steps to do GNU MAKE edits for VAX C version: 1). Unpack the GNU make sources, version 3.75, from your favorite FTP site. 2). Create an OpenVMS DCL command procedure containing the following lines between the two markers "==========================" below. 3). If you've never used EDIT/SUM before, you may want to read the following: $ HELP DIFFERENCES / SLP, and $ HELP EDIT / SUM 4). Edits are done. Invoke the GNU make supplied command file MAKEFILE.COM, or if your have a prior version of GNU make, there is a makefile included with make. ============================ $ SUMSLP="EDIT/SUM" $ SUMSLP [.GLOB]FNMATCH.H/OUTPUT=[.GLOB]FNMATCH.H/UPDATE=SYS$INPUT: - 26, 27 #if (defined (__cplusplus) || (defined (__STDC__) && __STDC__) || defined (WIN32)) / $ SUMSLP [.GLOB]GLOB.H/OUTPUT=[.GLOB]GLOB.H/UPDATE=SYS$INPUT: - 28, 29 #if (defined (__cplusplus) || (defined (__STDC__) && __STDC__) || defined (WIN32)) / $ SUMSLP JOB.C/UPDATE=SYS$INPUT: - 641, 641 #if (__VMS_VER >= 70000000) && defined POSIX - 648, 648 #if (__VMS_VER >= 70000000) && defined POSIX - 657, 657 #if (__VMS_VER >= 70000000) && defined POSIX - 1316, 1316 #ifdef HAVE_SIGSETMASK (void) sigblock (fatal_signal_mask); #endif - 1392, 1392 #ifdef HAVE_SIGSETMASK (void) sigsetmask (sigblock (0) & ~(fatal_signal_mask)); #endif / $ SUMSLP JOB.H/UPDATE=SYS$INPUT: - 70, 70 #if (__VMS_VER >= 70000000) && defined POSIX / $ SUMSLP MAIN.C/UPDATE=SYS$INPUT: - 398, 398 #if (__VMS_VER >= 70000000) && defined POSIX - 482, 482 #if (__VMS_VER >= 70000000) && defined POSIX / $ SUMSLP VMSDIR.H/UPDATE=SYS$INPUT: - 7, 8 #ifndef __SOCKET_TYPEDEFS typedef unsigned long u_long; typedef unsigned short u_short; #endif / ============================ Steps to do GNU MAKE edits for DEC C version: 1). Unpack the GNU make sources, version 3.75. (in an empty directory) 2). Create an OpenVMS DCL command procedure containing the following lines between the two markers "==========================". 3). If you've never used EDIT/SUM before, you may want to read the following: $ HELP DIFFERENCES / SLP, and $ HELP EDIT / SUM 4). Edits are done. Invoke the GNU make supplied command file MAKEFILE.COM, or if your have a prior version of GNU make, there is a makefile included with make. ============================ $ SUMSLP="EDIT/SUM" $ SUMSLP CONFIG.H-VMS/UPDATE=SYS$INPUT: - 114, 114 </* #define pid_t int */ - 153, 153 </* #define uid_t int */ - 217, 217 </* #define HAVE_SIGSETMASK 1 */ / $ SUMSLP JOB.C/UPDATE=SYS$INPUT: - 641, 641 #if (__VMS_VER >= 70000000) && defined POSIX - 648, 648 #if (__VMS_VER >= 70000000) && defined POSIX - 657, 657 #if (__VMS_VER >= 70000000) && defined POSIX - 1316, 1316 #ifdef HAVE_SIGSETMASK (void) sigblock (fatal_signal_mask); #endif - 1392, 1392 #ifdef HAVE_SIGSETMASK (void) sigsetmask (sigblock (0) & ~(fatal_signal_mask)); #endif / $ SUMSLP JOB.H/UPDATE=SYS$INPUT: - 70, 70 #if (__VMS_VER >= 70000000) && defined POSIX / $ SUMSLP MAIN.C/UPDATE=SYS$INPUT: - 398, 398 #if (__VMS_VER >= 70000000) && defined POSIX - 482, 482 #if (__VMS_VER >= 70000000) && defined POSIX / $ SUMSLP VMSDIR.H/UPDATE=SYS$INPUT: - 7, 8 #ifndef __SOCKET_TYPEDEFS typedef unsigned long u_long; typedef unsigned short u_short; #endif ============================ ******** ******** Other environments ******** ******** QNX --- The following notes are from John "Stosh" Muczynski, <STOSH@bauer.usa.com>. He is willing to answer questions as his time permits. He used the Watcom C16 compiler, version 9.5, with QNX version 4.20B. He had to modify the following files: SYS/PARAM.H Watcom doesn't supply a sys/param.h file. I defined it as --------------------------------clip here ------------------------------ /* CLK_TCK is used with the times() function and is defined in times.h */ #define HZ (CLK_TCK) --------------------------------clip here ------------------------------ It seems that HZ should be 1000 for QNX and not 100. The times() function appears to be POSIX 1003.1 UNIXHEAD.MAK I modified unixhead.mak to support a qnx_ platform. --------------------------------clip here ------------------------------ PLATFORM=qnx_ --------------------------------clip here ------------------------------ UNIXTAIL.MAK I modified unixtail.mak to support a qnx_ platform. --------------------------------clip here ------------------------------ # QNX 4.X qnx__=gp_nofb.$(OBJ) gp_unix.$(OBJ) gp_qnx.$(OBJ) gp_qnxfs.$(OBJ) gp_unifn.$(OBJ) qnx_.dev: $(qnx__) $(SETMOD) qnx_ $(qnx__) gp_qnx.$(OBJ): gp_qnx.c $(time__h) $(AK) gp_qnxfs.$(OBJ): gp_qnxfs.c $(AK) $(memory__h) $(string__h) $(gx_h) $(gp_h) \ $(gsstruct_h) $(gsutil_h) $(stat__h) $(dirent__h) --------------------------------clip here ------------------------------ The change here is to copy the "sysv_" make lines into "qnx_" make lines and change (1) gp_sysv.* to gp_qnx.* and (2) gp_unifs.* to gpqnxfs.* I copied the gp_sysv.c source to gp_qnx.c and (a) deleted rename() because it is supported by the watcom compiler, (b) kept gettimeofday(), (c) added the gp_open_scratch_file() which doesn't use mktemp(). I copied gp_unifs.c to gp_qnxfs.c and deleted the gp_open_scratch_file() because it uses mktemp() which watcom does not provide. Watcom does provide a tmpnam(char *buffer) function and more interestingly a FILE *tmpfile(void) function. If you ask I can fax you the manual pages. ANSIHEAD.MAK Compiler options: ----------------- I used the Bauer "standard" options for compiling and linking under QNX: --------------------------------clip here ------------------------------ CFLAGS=-O -w4 -3 -mf $(XCFLAGS) LDFLAGS=-3 -N 64k -O -g -w3 -mf -fF $(XLDFLAGS) --------------------------------clip here ------------------------------ -N 64k gives a big stack size; I don't know if its necessary. The -mf on CFLAGS and LDFLAGS is very necessary (32-bit flat memory model). The -3 and -O and -g and -w3 and -w4 are just fluff. The -fF option doesn't make sense to me. ******** ******** A guide to the source code ******** ******** General ------- There are very few machine dependencies in Ghostscript. A few of the .c files are machine-specific. These have names of the form gp_<platform>.c specifically gp_dosfb.c (MS-DOS) gp_dosfs.c (MS-DOS and MS Windows) gp_itbc.c (MS-DOS, Borland compilers) gp_iwatc.c (MS-DOS, Watcom or Microsoft compiler) gp_msdos.c (MS-DOS and MS Windows) gp_ntfs.c (MS-Windows Win32s and Windows NT) gp_os2.c (OS/2) gp_os9.c (OS-9) gp_unifs.c (Unix or OS-9) gp_unix.c (Unix) gp_sysv.c (System V Unix) gp_vms.c (VMS) gp_win32.c (MS-Windows Win32s and Windows NT) There are also some machine-specific conditionals in files with names <something>_.h. If you are going to extend Ghostscript to new machines or operating systems, you should check the *_.h files for ifdef's on things other than DEBUG, and you should probably count on making a new makefile and a new gp_ file. Library ------- Files beginning with gs, gx, or gz (both .c and .h), other than gs.c and gserver.c, are the Ghostscript library. Files beginning with gdev are device drivers or related code, also part of the library. Other files beginning with g are library files that don't fall neatly into either the kernel or the driver category. Interpreter ----------- gs.c is the main program for the interactive language interpreter; gserver.c is an alternative main program that is a rudimentary server. If you configure Ghostscript as a server rather than an interactive program, you will use gserver.c instead of gs.c. Files named z*.c are Ghostscript operator files. The names of the files generally follow the section headings of the operator summary in section 6.2 of the PostScript manual. Files named i*.c, and *.h other than g*.h, are the rest of the interpreter. See the makefile for a little more information on how the files are divided functionally. Files named s*.c are a flexible stream package, including the Level 2 PostScript 'filters' supported by Ghostscript.