NAME

pc − Pascal compiler

SYNOPSIS

pc [ −c ] [ −g ] [ −w ] [ −p ] [ −O ] [ −S ] [ −o output ] [ −C ] [ −b ] [ −i ] [ −l ] [ −s ] [ −z ]

[ −i name ... ] name ...

DESCRIPTION

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

A program may be separated into more than one .p file.  Pc will compile 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 included header files, whose names must end with .h.  Header files may only be included at the outermost 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 .h files.  Function and procedure bodies may not appear in .h files.  A binding phase of the compiler checks that declarations are used consistently, to enforce the type checking rules of Pascal. 

Object files created by other language processors may be loaded together with object files created by pc. 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. 

See the Berkeley Pascal User’s Manual for details. 

OPTIONS

The following options have the same meaning as in cc(1) and f77(1). See ld(1) for load-time options.

−c Suppress loading and produce ‘.o’ file(s) from source file(s). 

−g Produce additional symbol table information for dbx(1).

−w Suppress warning messages. 

−p Prepare object files for profiling, see prof(1).

−O Invoke an object-code improver. 

−S Compile the named program, and leave the assembler-language output on the corresponding file suffixed ‘.s’.  No ‘.o’ is created. 

−o output
Name the final output file output instead of a.out. 

The following options are peculiar to pc.

−C Compile code to perform runtime checks, verify assert statements, and initialize all variables to zero as in pi.

−b Block buffer the file output. 

−i Produce a listing for the specified procedures, functions and include files. 

−l Make a program listing during translation. 

−s Accept standard Pascal only; non-standard constructs cause warning diagnostics. 

−z Allow execution profiling with pxp by generating statement counters, and arranging for the creation of the profile data file pmon.out when the resulting object is executed. 

Other arguments are taken to be loader option arguments, perhaps libraries of pc compatible routines.  Certain flags can also be controlled in comments within the program as described in the Berkeley Pascal User’s Manual. 

FILES

file.ppascal source files
/usr/lib/pc0compiler
/lib/f1code generator
/usr/lib/pc2runtime integrator (inline expander)
/lib/c2peephole optimizer
/usr/lib/pc3separate compilation consistency checker
/usr/lib/pc2.0stringstext of the error messages
/usr/lib/how_pcbasic usage explanation
/usr/lib/libpc.aintrinsic functions and I/O library
/usr/lib/libm.amath library
/lib/libc.astandard library, see intro(3)

SEE ALSO

Berkeley Pascal User’s Manual
pi(1), pxp(1), pxref(1), sdb(1)

DIAGNOSTICS

For a basic explanation do

pc

BUGS

The keyword packed is recognized but has no effect. 

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.  It will be made to perform these checks in its next incarnation, so users are warned not to be sloppy. 

The −z flag doesn’t work for separately compiled files. 

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 strip(1) after they are compiled.

Sun System Release 0.3  —  24 March 1983