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+ Initial implementation by Marco van de Voort
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docs/ppc386.cfg.5
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281
docs/ppc386.cfg.5
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.TH ppc386.cfg 5 "30 may 1999" FPC "FPC configuration file"
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.SH NAME
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ppc386.cfg \- Free Pascal Compiler (FPC) configuration file, name derived from Portable Pascal Compiler.
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.SH DESCRIPTION
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This is the main configuration file of the
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.I Free Pascal Compiler (FPC)
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.PP
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All commandline options of the compiler (described in
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.BR ppc386 (1)
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) can be specified in the ppc386.cfg
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When the configuration file is found, it is read, and the lines
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it contains are treated like you typed them on the command line see
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.BR ppc386 (1)
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with some extra condtional possibilities.
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.SH SYNTAX
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You can specify comments in the configuration file with the # sign.
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Everything from the # on will be ignored, unless it is one of the keywords (see below).
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The compiler looks for the ppc386.cfg file in the following places :
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.PP
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\ \fI\- Under Linux\fP
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.br
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\ \ \- The current directory.
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.br
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\ \ \- Home directory, looks for .ppc386.cfg
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.br
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\ \ \- The directory specified in the environment
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.br
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\ \ variable PPC\_CONFIG\_PATH, and if it's not
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.br
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\ \ set under /etc.
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.PP
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\ \fI- Under all other OSes:\fP
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.br
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\ \ \- The current directory.
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.br
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\ \ \- The directory specified in the environment
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.br
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\ \ variable PPC\_CONFIG\_PATH.
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.br
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\ \ \- The directory where the compiler binary is.
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.br
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.PP
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When the compiler has finished reading the configuration file, it continues
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to treat the command line options.
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One of the command\-line options allows you to specify a second configuration
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file: Specifying \@foo on the command line will use file foo instead of ppc386.cfg
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and read further options from there. When the compiler has finished reading
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this file, it continues to process the command line.
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The configuration file allows some kind of preprocessing. It understands the
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following directives, which you should place on the first column of a line :
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.PP
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\ #IFDEF
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.br
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\ #IFNDEF
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.br
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\ #ELSE
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.br
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\ #ENDIF
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.br
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\ #DEFINE
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.br
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\ #UNDEF
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.br
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\ #WRITE
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.br
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\ #INCLUDE
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.br
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\ #SECTION
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.br
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They work the same way as their $... directive counterparts in Pascal:
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.IP \fI#IFDEF\fP
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.RS
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.IP \fISyntax\fP
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#IFDEF name
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Lines following #IFDEF are skipped read if the keyword "name"
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following it is not defined.
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They are read until the keywords #ELSE or #ENDIF are
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encountered, after which normal processing is resumed.
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.IP \fIExample\fP
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#IFDEF VER0_99_12
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.br
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\-Up/usr/lib/fpc/0.99.12/linuxunits
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.br
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#ENDIF
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.br
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.PP
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In the above example, /usr/lib/fpc/0.99.12/linuxunits will be added to
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the path if you're compiling with version 0.99.12 of the compiler.
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.RE
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.IP \fI#IFNDEF\fP
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.RS
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.IP \fISyntax\fP
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#IFNDEF name
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Lines following #IFDEF are skipped read if the keyword "name"
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following it is defined.
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They are read until the keywords #ELSE or #ENDIF are
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encountered, after which normal processing is resumed.
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.IP \fIExample\fP
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#IFNDEF VER0_99_12
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.br
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-Up/usr/lib/fpc/0.99.13/linuxunits
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.br
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#ENDIF
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.PP
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In the above example, /usr/lib/fpc/0.99.13/linuxunits will be added to
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the path if you're NOT compiling with version 0.99.12 of the compiler.
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.RE
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.IP \fI#ELSE\fP
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.RS
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.IP \fISyntax\fP
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#ELSE
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#ELSE can be specified after a #IFDEF or #IFNDEF
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directive as an alternative.
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Lines following #ELSE are skipped read if the preceding #IFDEF
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#IFNDEF was accepted.
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They are skipped until the keyword #ENDIF is
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encountered, after which normal processing is resumed.
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.IP \fIExample\fP
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#IFDEF VER0_99_12
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.br
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-Up/usr/lib/fpc/0.99.13/linuxunits
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.br
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#ELSE
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.br
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-Up/usr/lib/fpc/0.99.12/linuxunits
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.br
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#ENDIF
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.br
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.PP
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In the above example, /usr/lib/fpc/0.99.12/linuxunits will be added to
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the path if you're compiling with version 0.99.12 of the compiler,
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otherwise \file{/usr/lib/fpc/0.99.13/linuxunits will be added to the path.
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.RE
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.IP \fI#ENDIF\fP
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.RS
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.IP \fISyntax\fP
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#ENDIF
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.PP
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#ENDIF marks the end of a block that started with #IF(N)DEF,
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possibly with an #ELSE between it.
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.RE
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.IP \fI#DEFINE\fP
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.RS
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.IP \fISyntax\fP
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#DEFINE name
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.PP
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#DEFINE defines a new keyword. This has the same effect as a
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"\-dname" command\-line option.
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.RE
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.IP \fI#UNDEF\fP
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.RS
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.IP \fISyntax\fP
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#UNDEF name
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#UNDEF un-defines a keyword if it existed.
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This has the same effect as a "-uname" command-line option.
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.RE
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.IP \fI#WRITE\fP
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.RS
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.IP \fISyntax\fP
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#WRITE Message Text
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#WRITE writes "Message Text" to the screen.
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This can be useful to display warnings if certain options are set.
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.IP \fIExample\fP
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#IFDEF DEBUG
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.br
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#WRITE Setting debugging ON...
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.br
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-g
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.br
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#ENDIF
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.br
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.PP
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if "DEBUG is defined, this will produce a line
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Setting debugging ON...
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and will then switch on debugging information in the compiler.
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.RE
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.IP \fI#INCLUDE\fP
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.RS
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.IP \fISyntax\fP
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#INCLUDE filename
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#INCLUDE instructs the compiler to read the contents of
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"filename" before continuing to process options in the current file.
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This can be useful if you want to have a particular configuration file
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for a project (or, under Linux, in your home directory), but still want to
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have the global options that are set in a global configuration file.
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.IP \fIExample\fP
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#IFDEF LINUX
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.br
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#INCLUDE /etc/ppc386.cfg
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.br
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#ELSE
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.br
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#IFDEF GO32V2
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.br
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#INCLUDE c:\\pp\\bin\\ppc386.cfg
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.br
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#ENDIF
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.br
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#ENDIF
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.br
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.PP
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This will include /etc/ppc386.cfg if you're on a linux machine,
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and will include c:\\pp\\bin\\ppc386.cfg on a dos machine.
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.RE
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.IP \fI#SECTION\fP
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.RS
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.IP \fISyntax\fP
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#SECTION name
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The #SECTION directive acts as a #IFDEF directive, only
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it doesn't require an #ENDIF directive. the special name COMMON
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always exists, i.e. lines following #SECTION COMMON are always read.
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.RE
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.SH Example
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A standard block often used in (the Linux version of) ppc386.cfg is
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-vwhin
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.br
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#IFDEF VER0_99_12
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.br
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#IFDEF FPC_LINK_STATIC
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.br
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\-Fu/usr/lib/fpc/0.99.12/rtl/static
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.br
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\-Fu/usr/lib/fpc/0.99.12/units/static
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.br
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#ENDIF
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.br
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#IFDEF FPC_LINK_DYNAMIC
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.br
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\-Fu/usr/lib/fpc/0.99.12/rtl/shared
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.br
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\-Fu/usr/lib/fpc/0.99.12/units/shared
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.br
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#ENDIF
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.br
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\-Fu/usr/lib/fpc/0.99.12/rtl
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.br
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\-Fu/usr/lib/fpc/0.99.12/units
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.br
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#ENDIF
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.br
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.SH SEE ALSO
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.BR ppc386 (1)
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