.\" Copyright (c) 1980, 1990 The Regents of the University of California. .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the University of .\" California, Berkeley and its contributors. .\" 4. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)cc.1 6.7 (Berkeley) 8/9/91 .\" .Dd August 9, 1991 .Dt CC 1 .Os BSD 4 .Sh NAME .Nm cc .Nd C compiler .Sh SYNOPSIS .Nm cc .Op option Ar ... .Ar file ... .Sh DESCRIPTION .Nm Cc is the UNIX C compiler. .Nm Cc accepts several types of arguments: .Pp Arguments whose names end with `.c' are taken to be C source programs; they are compiled, and each object program is left on the file whose name is that of the source with `.o' substituted for `.c'. The `.o' file is normally deleted, however, if a single C program is compiled and loaded all at one go. .Pp In the same way, arguments whose names end with `.s' are taken to be assembly source programs and are assembled, producing a `.o' file. .Pp The following options are interpreted by .Nm cc . See .Xr ld 1 for load-time options. .Bl -tag -width Ds .It Fl c Suppress the loading phase of the compilation, and force an object file to be produced even if only one program is compiled. .It Fl g Have the compiler produce additional symbol table information for .Xr dbx 1 Also pass the .Fl lg flag to .Xr ld 1 . .It Fl go Have the compiler produce additional symbol table information for the obsolete debugger .Xr sdb 1 . Also pass the .Fl lg flag to .Xr ld 1 . .It Fl w Suppress warning diagnostics. .It Fl p Arrange for the compiler to produce code which counts the number of times each routine is called. If loading takes place, replace the standard startup routine by one which automatically calls .Xr monitor 3 at the start and arranges to write out a .Pa mon.out file at normal termination of execution of the object program. An execution profile can then be generated by use of .Xr prof 1 . .It Fl pg Causes the compiler to produce counting code in the manner of .Fl p but invokes a run-time recording mechanism that keeps more extensive statistics and produces a .Pa gmon.out file at normal termination. Also, a profiling library is searched, in lieu of the standard C library. An execution profile can then be generated by use of .Xr gprof 1 . .It Fl O Invoke an object-code improver. .It Fl R Passed on to .Xr as 1 making initialized variables shared and read-only. .It Fl S Compile the named C programs, and leave the assembler-language output on corresponding files suffixed `.s'. .It Fl M Run only the macro preprocessor on the named C programs, requesting it to generate Makefile dependencies and send the result to the standard output. .It Fl E Run only the macro preprocessor on the named C programs, and send the result to the standard output. .It Fl C prevent the macro preprocessor from eliding comments. .It Fl o Ns Ar output Name the final output file .Ar output . If this option is used the file `a.out' will be left undisturbed. .El .Bl -tag -width Ds -compact .It Fl D Ns Ar name=def .It Fl D Ns Ar name Define the .Ar name to the preprocessor, as if by `#define'. If no definition is given, the name is defined as "1". .El .Bl -tag -width Ds .It Fl U Ns Ar name Remove any initial definition of .Ar name . .It Fl I Ns Ar dir `#include' files whose names do not begin with `/' are always sought first in the directory of the .Ar file argument, then in directories named in .Fl I options, then in directories on a standard list. .It Fl L Ns Ar dir Library archives are sought first in directories named in .Fl L options, then in directories on a standard list. .It Fl f Use an alternate compiler which does not convert expressions involving only floats to double. This does not conform to the standard which states that all intermediate results should be converted to double but does provide a speed improvement for programs which don't require full double precision. This option also makes .Sy register float variables work appropriately. .It Fl B Ns Ar path Find substitute compiler passes in the named path with the suffixes cpp, ccom and c2. .It Fl t Ns Op p012 Find only the designated compiler passes in the files whose names are constructed by a .Fl B option. .El .Pp Other arguments are taken to be either loader option arguments, or C-compatible object programs, typically produced by an earlier .Nm cc run, or perhaps libraries of C-compatible routines. These programs, together with the results of any compilations specified, are loaded (in the order given) to produce an executable program with name .Pa a.out . .Sh FILES .Bl -tag -width /usr/libexec/sccom -compact .It Pa file.c Input file. .It Pa file.o Object file. .It Pa a.out Loaded output. .It Pa ctm? Temporary. .It Pa /usr/bin/cpp Preprocessor. .It Pa /usr/libexec/ccom Compiler. .It Pa /usr/libexec/ccom Compiler for single precision floats. .It Pa /usr/libexec/c2 Optional optimizer. .It Pa /usr/lib/crt0.o Runtime startoff. .It Pa /usr/lib/mcrt0.o Startoff for profiling. .It Pa /usr/lib/gcrt0.o Startoff for gprof-profiling. .It Pa /usr/lib/libc.a Standard library, see. .Xr intro 3 . .It Pa /usr/lib/libc_p.a Profiling library, see .Xr intro 3 . .It Pa /usr/include Standard directory for `#include' files. .It Pa mon.out File produced for analysis by .Xr prof 1 . .It Pa gmon.out File produced for analysis by .Xr gprof 1 . .El .Sh SEE ALSO .Xr monitor 3 , .Xr prof 1 , .Xr gprof 1 , .Xr adb 1 , .Xr ld 1 , .Xr dbx 1 , .Xr as 1 .Rs .%A B. W. Kernighan .%A D. M. Ritchie .%T "The Programming Language" .%I Prentice-Hall .%D 1978 .Re .Rs .%A B. W. Kernighan .%T "Programming in C \- a tutorial" .Re .Rs .%A D. M. Ritchie .%T "C Reference Manual" .Re .Sh DIAGNOSTICS The diagnostics produced by C itself are intended to be self-explanatory. Occasional messages may be produced by the assembler or loader. .Sh HISTORY The .Nm \&cc compiler was distributed with .At v6 . .Sh BUGS The compiler currently ignores advice to put .Ic char , .Ic unsigned char , .Ic short , .Ic unsigned short , .Ic float , or .Ic double variables in registers, except as noted above. It previously produced poor, and in some cases incorrect, code for such declarations.