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pc(1)									 pc(1)

Name
       pc - Pascal compiler

Syntax
       pc [option] name...

Description
       The  command  is	 a  Pascal compiler.  If given an argument file ending
       with a .p, it compiles and loads	 the  file  into  an  executable  file
       called, by default, a.out.

       A  program  may	be  separated into more than one .p file.  The command
       compiles a number of argument .p files  into  object  files  (with  the
       extension  .o in place of .p).  Object files may then be loaded into an
       executable a.out file.  Exactly one object file must supply  a  program
       statement to successfully create an executable a.out file.  The rest of
       the files must consist only of declarations which logically nest within
       the  program.  References to objects shared between separately compiled
       files are allowed if the objects are declared in	 header	 files,	 whose
       names  must end with .h.	 Header files may only be included at the out‐
       ermost level, and thus declare only  globally  available	 objects.   To
       allow  functions	 and  procedures to be declared, an external directive
       has been added, whose use is  similar  to  the  forward	directive  but
       restricted  to appear only in files.  The function and procedure bodies
       may not appear in files.	 A binding phase of the compiler  checks  that
       declarations  are used consistently, to enforce the type checking rules
       of Pascal.  The binder is not as strict as described here, with	regard
       to the rules about external declarations only in .h files and including
       .h files only at the outermost level.

       Object files  created  by  other	 language  processors  may  be	loaded
       together with object files created by The functions and procedures they
       define must have been declared in .h files included by all the .p files
       which  call  those routines.  Calling conventions are as in C, with var
       parameters passed by address.

Options
       The following options have the same meaning as in  and  (Note  that  is
       from the unsupported subset.)  See for load-time options.

       -c		   Suppresses loading and produce .o files from source
			   files.

       -g		   Produces additional symbol table information for

       -w		   Suppresses warning messages.

       -O		   Invokes an object-code improver.

       -o output	   Names the  final  output  file  output  instead  of
			   a.out.

       -p		   Prepares  object  files for profiling.  For further
			   information, see

       -S		   Compiles the named program, and  leave  the	assem‐
			   bler-language output on the corresponding file suf‐
			   fixed .s.  No .o file is created.

       The following options are peculiar to

       -C		   Compiles code to  perform  runtime  checks,	verify
			   calls,  and	initialize all variables to zero as in
			   pi.

       -b		   Block buffers the file output.

       -iname		   Produces a listing for  the	specified  procedures,
			   functions and files.

       -l		   Makes a program listing during translation.

       -s		   Accepts  standard Pascal only and non-standard con‐
			   structs cause warning diagnostics.

       Because the -s option is usurped by the compiler, it is not possible to
       pass  the  strip	 option	 to the loader.	 Thus programs which are to be
       stripped, must be run through after they are compiled.

       -t directory	   Uses the given  directory  for  compiler  temporary
			   files.

       -z		   Allows   execution  profiling  with	by  generating
			   statement counters, and arranging for the  creation
			   of  the profile data file pmon.out when the result‐
			   ing object is executed.  The -z flag	 doesn't  work
			   for separately compiled files.

       Other  arguments	 are  taken  to	 be  loader  option arguments, perhaps
       libraries of compatible routines.  Certain flags can also be controlled
       in comments within the program.

Restrictions
       The keyword packed is recognized but has no effect.

Diagnostics
       See for an explanation of the error message format.

Files
       file.p			pascal source files
       /usr/lib/pc0		compiler
       /lib/f1			code generator
       /usr/lib/pc2		runtime integrator (inline expander)
       /lib/c2			peephole optimizer
       /usr/lib/pc3		separate compilation consistency checker
       /usr/lib/pc2.*strings	text of the error messages
       /usr/lib/how_pc		basic usage explanation
       /usr/lib/libpc.a		intrinsic functions and I/O library
       /usr/lib/libm.a		math library
       /lib/libc.a		standard library, see intro(3)

See Also
       pi(1), pxp(1), pxref(1)
       "Berkeley  Pascal  User's  Manual,"  Supplementary Documents, Volume 2:
       Programmer

				      VAX				 pc(1)
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