Annotation of researchv10dc/cmd/icon/docs/icont.1, revision 1.1

1.1     ! root        1: .ds M \fH
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        !             5: .ft H
        !             6: .sp .5
        !             7: ..
        !             8: .de De
        !             9: .ft R
        !            10: .in -.5i
        !            11: .fi
        !            12: .sp .5
        !            13: ..
        !            14: .TH ICONT 1 "The University of Arizona \- 5/27/86"
        !            15: .SH NAME
        !            16: icont \- process Icon programs
        !            17: .SH SYNOPSIS
        !            18: \*Micont\fR
        !            19: [ option ... ] file ... [
        !            20: \*M\-x\fR
        !            21: arg ... ]
        !            22: .SH DESCRIPTION
        !            23: The program \*Micont\fR
        !            24: is a command processor for running Version 6.0 Icon programs.
        !            25: Used in its simplest form,
        !            26: it produces a file suitable for interpretation by the Icon
        !            27: interpreter.
        !            28: Processing consists of two phases:
        !            29: \fItranslation\fR
        !            30: and
        !            31: \fIlinking\fR.
        !            32: During translation,
        !            33: each Icon source file is translated into an intermediate language called \fIucode\fR;
        !            34: during linking,
        !            35: the one or more ucode files are combined and a single
        !            36: \fIicode\fR file is produced.
        !            37: Unless the
        !            38: \*M\-o\fR
        !            39: option is specified, the name of the resulting icode file is
        !            40: formed by deleting the suffix of the first input file named on the
        !            41: command line.
        !            42: If the
        !            43: \*M\-x\fR
        !            44: argument is used,
        !            45: the file is automatically executed by the interpreter
        !            46: and any arguments following the
        !            47: \*M\-x\fR
        !            48: are passed as execution arguments to the Icon program itself.
        !            49: .PP
        !            50: Files whose names end in \*M.icn\fR are assumed to be Icon source programs.
        !            51: These programs are translated, and the intermediate code is left in two ucode files of
        !            52: the same name with \*M.u1\fR and \*M.u2\fR substituted for \*M.icn\fR.
        !            53: The ucode code files normally are deleted when \*Micont\fR completes.
        !            54: Files whose names end in \*M.u1\fR are assumed to refer to ucode
        !            55: files from a previous translation; these files and the corresponding \*M.u2\fR
        !            56: files are included in the linking phase after any \*M.icn\fR
        !            57: files have been translated.
        !            58: A \*M.u1\fR or \*M.u2\fR file that is explicitly named is not deleted.
        !            59: Icon source programs may be read from standard input.
        !            60: The argument
        !            61: \*M\-\fR
        !            62: signifies the use of standard input as a source file.
        !            63: In this case, the ucode files are named \*Mstdin.u1\fR and \*Mstdin.u2\fR
        !            64: and the icode file is named \*Mstdin\fR.
        !            65: .PP
        !            66: The following options are recognized by
        !            67: \*Micont\fR:
        !            68: .TP 4
        !            69: \*M\-c\fR
        !            70: Suppress the linking phase.
        !            71: The ucode code files are not deleted.
        !            72: .TP
        !            73: \*M\-m\fR
        !            74: Preprocess each \*M.icn\fR source file
        !            75: with the \fIm4\^(1)\fR
        !            76: macro processor before translation.
        !            77: .TP
        !            78: \*M\-o \fIoutput\fR
        !            79: Name the icode file
        !            80: \fIoutput\fR.
        !            81: .TP
        !            82: \*M\-s\fR
        !            83: Suppress informative messages from the translator and
        !            84: linker.
        !            85: Normally, both informative messages and error messages are sent
        !            86: to standard error output.
        !            87: .TP
        !            88: \*M\-t\fR
        !            89: Arrange for \*M&trace\fR to have an initial value of \-1
        !            90: when the program is executed.
        !            91: Normally, \*M&trace\fR has an initial value of 0.
        !            92: .TP
        !            93: \*M\-u\fR
        !            94: Issue warning messages for undeclared identifiers in the program.
        !            95: The warnings are issued during the linking phase.
        !            96: .PP
        !            97: Icon has several tables related to the translation and linking
        !            98: of programs.
        !            99: These tables are large enough for most programs, but their sizes can be
        !           100: changed, if necessary, by the \*M\-S\fR option. This option has the
        !           101: form \*M\-S\^[cfgilrstCL]\fI n\fR, where the letter following the
        !           102: \*MS\fR specifies the table and \fIn\fR is the number of storage units to
        !           103: allocate for the table.
        !           104: Some sizes depend on the size of the address space of the computer.
        !           105: For this purpose, a VAX has a large address space,
        !           106: while a PDP-11 has a small address space.
        !           107: The tables and their default sizes for computers
        !           108: with large and small memory sizes are:
        !           109: .nf
        !           110: .in +.5i
        !           111: .sp
        !           112: .ta .3i 2.5iR 3.3iR
        !           113:                \fIlarge        small\fR
        !           114: .sp .5
        !           115: \*Mc\fR        constant table  100     100
        !           116: \*Mf\fR        field table     100     100
        !           117: \*Mg\fR        global symbol table     200     200
        !           118: \*Mi\fR        identifier table        500     500
        !           119: \*Ml\fR        local symbol table      100     100
        !           120: \*Mr\fR        field table for records 100     100
        !           121: \*Ms\fR        string space    15,000  7,500
        !           122: \*Mt\fR        tree space      15,000  5,000
        !           123: \*MC\fR        code buffer     20,000  4,000
        !           124: \*ML\fR        labels  500     500
        !           125: .sp
        !           126: .in -.5i
        !           127: .fi
        !           128: The units depend on the table involved, but the default values can
        !           129: be used as a general guide for appropriate settings of \*M\-S\fR
        !           130: options without knowing the units.
        !           131: .PP
        !           132: The environment variable \*MIPATH\fR controls the location of files
        !           133: specified in link directives. The value of \*MIPATH\fR should be a blank-separated
        !           134: form \fIp1\0p2 \*(El\0 pn\fR where the \fIpi\fR name directories.
        !           135: Each directory is searched in turn to locate files named in link
        !           136: directives. The default value for \*MIPATH\fR is \*M.\fR , that is, the current
        !           137: directory.
        !           138: .PP
        !           139: The icode
        !           140: file produced by the Icon linker is
        !           141: executable.
        !           142: \fRFor example, the command
        !           143: .nf
        !           144: .in +.5i
        !           145: \*M
        !           146: .sp -.5
        !           147: icont hello.icn
        !           148: .ft R
        !           149: .in -.5i
        !           150: .sp .5
        !           151: .fi
        !           152: produces a file named \*Mhello\fR
        !           153: that can be run by the command
        !           154: .nf
        !           155: .in +.5i
        !           156: \*M
        !           157: .sp -.5
        !           158: hello
        !           159: .ft R
        !           160: .in -.5i
        !           161: .sp .5
        !           162: .fi
        !           163: .PP
        !           164: Arguments can be passed to the Icon program by following the program
        !           165: name with the arguments.  Any such arguments are passed to the main
        !           166: procedure as a list of strings.
        !           167: .PP
        !           168: When an Icon program is executed, several environment variables
        !           169: are examined to determine certain execution parameters.
        !           170: The values assigned to these variables should be numbers.
        !           171: The variables that affect execution
        !           172: and the interpretations of their values are as follows:
        !           173: .TP 4
        !           174: \*MTRACE\fR
        !           175: Initialize the value of \*M&trace\fR.
        !           176: If this variable has a value, it overrides the translation-time
        !           177: \*M\-t\fR
        !           178: option.
        !           179: .TP
        !           180: \*MNBUFS\fR
        !           181: The number of i/o buffers to use for files.
        !           182: When a file is opened, it is assigned an i/o buffer if one is available
        !           183: and the file is not a tty.
        !           184: If no buffer is available, the file is not buffered.
        !           185: \*M&input\fR, \*M&output\fR, and \*M&errout\fR are buffered if buffers
        !           186: are available.
        !           187: On large-memory systems, the default value of \fINBUFS\fR is 10.
        !           188: On small-memory systems, it is 5.
        !           189: .TP
        !           190: \*MNOERRBUF\fR
        !           191: If set, \*M&errout\fR is not buffered.
        !           192: .TP
        !           193: \*MICONCORE\fR
        !           194: If set, a core dump is produced for error termination.
        !           195: .TP
        !           196: \*MSTRSIZE\fR
        !           197: The initial size of the string space, in bytes.
        !           198: The string space grows if necessary, but it never shrinks.
        !           199: On large-memory systems, the default value of \*MSTRSIZE\fR is 51,200;
        !           200: on small-memory systems, it is 10,240.
        !           201: .TP
        !           202: \*MHEAPSIZE\fR
        !           203: The initial size of the allocated block region, in bytes.
        !           204: The heap grows if necessary, but it never shrinks.
        !           205: On large-memory systems, the default value of \*MHEAPSIZE\fR is 51,200;
        !           206: on small-memory systems, it is 10,240.
        !           207: .TP
        !           208: \*MCOEXPSIZE\fR
        !           209: The size, in words, of each co-expression block.
        !           210: On large-memory systems, the default value of \*MCOEXPSIZE\fR is 2,000;
        !           211: on small-memory systems, it is 1,000.
        !           212: .TP
        !           213: \*MMSTKSIZE\fR
        !           214: The size, in words, of the main interpreter stack. On large-memory
        !           215: systems, the default value of \*MMSTKSIZE\fR is 10,000;
        !           216: on small-memory systems, it is 3,000.
        !           217: .TP
        !           218: \*MSTATSIZE\fR
        !           219: The size, in bytes, of the static region in which co-expression blocks
        !           220: are allocated. On large-memory systems, the default value of \*MSTATSIZE\fR
        !           221: is 20,480; on small-memory systems, it is 1,024.
        !           222: .TP
        !           223: \*MSTATINCR\fR
        !           224: The size of the increment used when the static region is expanded.
        !           225: The default increment is one-fourth of the initial size of the static
        !           226: region.
        !           227: .SH FILES
        !           228: .ta \w'\*Mitran\fR     'u
        !           229: \*Micont\fR    Icon command processor
        !           230: .br
        !           231: \*Mitran\fR    Icon translator
        !           232: .br
        !           233: \*Milink\fR    Icon linker
        !           234: .br
        !           235: \*Miconx\fR    Icon run-time system
        !           236: .br
        !           237: .SH SEE ALSO
        !           238: \fIThe Icon Programming Language\fR,
        !           239: Ralph E. Griswold and Madge T. Griswold,
        !           240: Prentice-Hall Inc.,
        !           241: Englewood Cliffs, New Jersey,
        !           242: 1983.
        !           243: .LP
        !           244: \fIVersion 6.0 of Icon\fR, Ralph E. Griswold, William H. Mitchell,
        !           245: and Janalee O'Bagy,
        !           246: TR 86-10,
        !           247: Department of Computer Science, The University of Arizona,
        !           248: May 1986.
        !           249: .LP
        !           250: m4\^(1), icon_pi(1)
        !           251: .SH BUGS
        !           252: .LP
        !           253: Icode files do not stand alone; the Icon run-time system must be
        !           254: present.
        !           255: An icode
        !           256: file produced on one system will not work on another system unless
        !           257: the Icon run-time system is in the same place on both systems and
        !           258: the run-time system is of the same version of Icon as the linker
        !           259: that produced the icode file.
        !           260: .LP
        !           261: Stack overflow is checked using a heuristic that is not always effective.
        !           262: .LP
        !           263: If the
        !           264: \*M\-m\fR
        !           265: option is used,
        !           266: line numbers reported in error messages or tracing messages
        !           267: are from the file after, not before, preprocessing.

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