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PORTING
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PORTING
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*******************************************************************************
*** NB: This file is horribly out of date.
*** View everything in it as historical perspective;
*** the broad outline may be useful but the details are not current
*******************************************************************************
The following information is mainly geared towards people who want
to port gnuplot to new platforms not covered by the installation
instructions in 0INSTALL and INSTALL.gnu. Please do also read the
file CodeStyle.
We have tried to isolate most operating system dependent definitions
in the file syscfg.h. If you add a new platform, some definitions must
probably be added to syscfg.h as well.
Preprocessor Defines
********************
These #defines should be checked before compilation. There are many
makefiles provided as templates. You probably need these only if porting
to a new machine. The HAVE_XXX defines should be taken care of by configure
if your platform supports GNU autoconf generated configure shell scripts.
If your platform/environment does not support configure, see Codestyle and
syscfg.h.
THIS LIST IS SOMEWHAT OUT OF DATE NOW - CHECK configure.in and
acconfig.h.
define file note
------ ---- --------
HAVE_BCOPY Makefile define if you have bcopy() and no memcpy()
HAVE_LGAMMA Makefile define if you've got lgamma(3)
HAVE_GAMMA Makefile define if you've got gamma(3)
PC Makefile define if compiling on a PClone
MSDOS Makefile define if compiling under MSDOS;
automatically defined by Microsoft C 5.10
DOS32 Makefile define for a 32-bit DOS extender (djgpp/emx)
WIN32 Makefile define for a 32-bit MS-Windows version
HELPFILE Makefile name including path of gnuplot.gih file.
VERYLARGE plot.h define to be largest coordinate number.
SHELL plot.h default shell to spawn if SHELL environment
variable not found at run-time
NOCWDRC Makefile define to inhibit check of ./.gnuplot
READLINE Makefile define if you want command-line editing
HAVE_LIBREADLINE Makefile define if you are linking with GNU readline
Header File Availability
========================
It is generally assumed that standard ANSI/ISO header files are available.
Function Availability
=====================
It is generally assumed that standard ANSI/ISO functions are available.
If certain standard ANSI/ISO C functions are not available, two alternatives
come to mind: either try to achieve the same functionality without the
missing function, or provide a portable implementation. Examples for this
are in stdfn.c. See also stdfn.h.
The following defines are used to ensure availability of certain
non-standard functions.
#define function see file comments
-------------------------------------------------------------------
HAVE_ERF erf() specfun.c
HAVE_GAMMA gamma() specfun.c
HAVE_GETCWD getcwd() stdfn.h
HAVE_GETWD getwd() stdfn.h
HAVE_INDEX index() stdfn.h pre-ANSI version of strchr()
HAVE_LGAMMA lgamma() specfun.c prefered over gamma()
HAVE_ON_EXIT on_exit() term/x11.trm atexit() substitute on SunOS
HAVE_RINDEX rindex() stdfn.h pre-ANSI version of strrchr()
HAVE_SLEEP sleep() command.c
HAVE_SYSINFO sysinfo() gplt_x11.c SysV function to get and set
system information. Used
instead of gethostname().
HAVE_STRNCASECMP strncasecmp() stdfn.c non-case sensitive string
comparison
HAVE_STRNICMP strnicmp() stdfn.c dto.
HAVE_TCGETATTR tcgetattr() readline.c
Terminal Selection Options
==========================
These defines are used to include the drivers for various plotting
terminals, printers, and protocols that a given version of gnuplot can
access and the description of such for the help file.
define file note
------ ---- --------
TERMFLAGS Various makefiles (obsolete under Unix; use configure instead)
the set of terminals you want, from below or
term.h
SHORT_TERMLIST term.h edit term.h to specify desired devices at
the beginning (instead of commenting out,
throughout the file, devices not desired.)
ALL_TERM_DOC docs/termdoc.c on-line help documentation for all devices
rather than only for the drivers selected
in term.h.
The following, non-authoritative, list serves as a guide to the range
of devices that may be selected/deselected by editing term.h.
AED AED 512 and AED 767
AIFM Adobe Illustrator Format
ATT6300 PC with AT&T 6300 graphics
BITGRAPH BBN BitGraph
COREL COREL! Draw Format
CORONA PC with Corona graphics 325
DEBUG Voluminous output for debugging to terminal
DJSVGA MSDOS SVGA with DJGPP compiler
DXY800A Roland DXY800A plotter
DUMB Printer or glass dumb terminal
DXF AutoCad (Release 10.x) dxf file format
EEPIC EEPIC-extended LaTeX driver, for EEPIC users
EGALIB PC with EGA/VGA graphics.
EMTEX LaTeX picture environment with emTeX specials
EMXVGA PC with VGA running DOS or OS/2
EPS180 Epson-LQ style 24-pin 180-dot per inch printers
EPS60 Epson-style 60-dot per inch printers
EPSONP Epson LX-800, Star NL-10, NX-1000 and lots of others
EXCL Talaris EXCL laser printer format
FIG Fig graphics language (requires object.h from TransFig)
GIF Gif output, requires special library
GPIC Gpic for groff
HERCULES IBM PC/Clone with Hercules graphics board
HP2648 HP2648, HP2647
HP26 HP2623A and maybe others
HP500C HP Deskjet 500 C and maybe other Color Deskjets
HP75 HP7580, and probably other HPs
HPGL HP7475 and (hopefully) lots of others
HPLJII HP Laserjet II
HPPJ HP PaintJet
IMAGEN Imagen laser printers (300dpi) (requires -Iterm also)
KERMIT MS-DOS Kermit Tektronix 4010 emulator
LATEX LaTeX picture environment
LINUXVGA Linux PC with (s)vgalib
MF Metafont Format
MIF FrameMaker MIF 3.00 Format
NEC NEC CP6 pinwriter printer
NEXT NeXTStep Window System (only grey scale)
OS2PM OS/2 Presentation Manager
PBM PBMPLUS pbm, pgm, ppm formats
PCL HP PCL5 (actually HPGL/2)
PNG Portable Network Graphics, requires separate library
POSTSCRIPT PostScript
PSLATEX Postscript graphics, LaTeX labels and titles
PSTRICKS PSTRICKS 0.91 format
QMS QMS/QUIC laserprinter (Talaris 1200 and others)
REGIS ReGis graphics (vt125, vt220, vt240, Gigis...)
SELANAR Selanar
SUN Sun Microsystems Workstation
T410X Tektronix 4106, 4107, 4109 and 420x terminals
TABLE Text output
TANDY60 Tandy DMP-130 series 60-dot per inch graphics
TEK Tektronix 4010, and probably others
TEXDRAW TeXDraw format (for LaTeX)
TGIF TGIF X11 Drawing Tool
TPIC Tpic specials for TeX
UNIXPC unixpc (ATT 3b1 or ATT 7300)
V384 Vectrix 384 and tandy color printer
VTTEK VT like Tektronix 4010 emulator
VWS VAX Windowing System (UIS libraries)
X11 X11R4 window system
Platform Related Defines
========================
These #defines are defined automatically by various compilers or
makefiles, some gnuplot routines check these defines to implement
features found in the various environments. This list is certainly
incomplete.
define note
------ --------
_CRAY defined by CRAY's C compiler.
__DECC defined by DEC C compiler under VMS (?)
__TURBOC__ defined automatically by Borland C++ 3.x.
unix defined by most unix C compilers.
vms (and VMS) defined by VMS C compilers.
__ZTC__ Zortech C compiler under MSDOS.
_Windows defined by Borland C++ 3.0 compiling for MS-Windows.
__WATCOMC__ defined automatically by Watcom C
__EMX__ defined by EMX gcc (available on DOS & OS/2).
OS2 to be defined by compilers under OS/2.
Defines Used in Gnuplot
=======================
The following defines are used to achieve better portability. Most of
them are wrappers.
#define wraps/redefines see file comments
------------------------------------------------------------------
GP_GETCWD getwd()/getcwd() alikes stdfn.h
GP_FARMALLOC faralloc()/malloc() alloc.c Windows environment
GP_FARREALLOC farrealloc()/realloc() alloc.c Windows environment
GP_SLEEP sleep() command.c
GP_SYSTEMINFO sysinfo()/gethostname() gplt_x11.c
GPFAR `far' compiler directive plot.h MSDOS and Win16
GPHUGE `huge' compiler directive plot.h MSDOS and Win16
GP_INLINE `__inline' directive plot.h
GPMAX max (a,b) plot.h
GPMIN min (a,b) plot.h
The following symbols are defined when using DEBUG:
DEBUG_WHERE prints filename and line number to stderr *without* linefeed
FPRINTF(a) uses DEBUG_WHERE, passes a to fprintf
Usage example: FPRINTF((stderr, "function foo returned %d\n", bar));
Result: readline.c:620 function foo returned -1