Man page - pcpp(1)

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Manual

CC (1) General Commands Manual CC (1)

NAME

cc — front-end to the C compiler

SYNOPSIS

cc [ -cEgkMPSstvX ] [ -ansi ] [ -B prefix ] [ -D macro [

= value ]] [ -d flags ] [ -f feature ] [ -I path ] [ -include file ] [ -isystem path ] [ -L path ] [ -m option ] [ -nodefaultlibs ] [ -nostartfiles ] [ -nostdinc ] [ -nostdlib ] [ -O [
level ]] [ -o outfile ] [ -pg ] [ -pthread ] [ -shared ] [ -static ] [ -std= standard ] [ -U macro ] [ -Wa , options ] [ -Wc , options ] [ -Wl , options ] [ -Wp , options ] [ -x language ] [ -z keyword ] [ file ... ]

DESCRIPTION

The cc utility provides a front-end to the “portable C compiler”. Multiple files may be given on the command line. Unrecognized options are sent directly to ld (1).

Filenames that end with .c are passed via cpp (1) → ccom (1) → as (1) → ld (1).

Filenames that end with .i are passed via ccom (1) → as (1) → ld (1).

Filenames that end with .s are passed via as (1) → ld (1).

Filenames that end with .S are passed via cpp (1) → as (1) → ld (1).

Filenames that end with .o are passed directly to ld (1).

The options are as follows:

-ansi

Synonym for -std=c89 .

-B prefix

Define alternate prefix path for cpp (1), ccom (1), as (1), or ld (1) executables.

-C

Passed to the cpp (1) preprocessor to not discard comments.

-c

Stop after generating object code with as (1). Do not link. The resulting object output is saved as a filename with a “.o” suffix unless -o option is used. Note: cannot be combined with -o if multiple files are given.

-D macro [
= value ]

Passed to the cpp (1) preprocessor to define macro with an optional value .

-d flags

Debug options. flags is a string of characters, which signify the following actions.

M

Cause the preprocessor to output a list of macro definitions.

any unknown flags are ignored.

-E

Stop after preprocessing with cpp (1). Do not compile, assemble, or link. Output is sent to standard output unless the -o option is used.

-ffreestanding

Assume a freestanding environment.

-fPIC

Generate PIC code.

-fpic

Tells C compiler to generate PIC code and tells assembler that PIC code has been generated.

-funsigned-char

Tell the compiler to treat ‘char’ types as if they were unsigned unless explicitly defined otherwise. -fsigned-char can be used to signify the opposite behaviour. The default for the ‘char’ type depends on the compiler target architecture.

-fstack-protector

Tell the compiler to wrap functions with code which checks at runtime that a stack overflow has not occurred. When stack protection is in effect, the __SSP__ macro will be defined.

-g

Send -g flag to ccom (1) to create debug output. Debug information output can be disabled with -g0 .

-I path

Passed to the cpp (1) preprocessor to add header search directory to override system defaults.

-include file

Tells the cpp (1) preprocessor to include the file during preprocessing.

-isystem path

Defines path as a system header directory for the cpp (1) preprocessor.

-k

Generate PIC code. See -fpic option.

-L path

Passed to the linker, to add path to the list of directories searched for shared libraries.

-M

Pass -M flag to cpp (1) to generate dependencies for make (1).

-m option

Target-dependent options. Multiple -m options can be given, the following are supported:

ARM

-mlittle-endian -mbig-endian -mfpe=fpa -mfpe=vpf -msoft-float -march=armv1 -march=armv2 -march=armv2a -march=armv3 -march=armv4 -march=armv4t -march=armv4tej -march=armv5 -march=armv6 -march=armv6t2 -march=armv6kz -march=armv6k -march=armv7

HPPA
i386
MIPS

-mlittle-endian -mbig-endian -mhard-float -msoft-float

PDP-10
PowerPC
Sparc64
VAX
-nodefaultlibs

Do not link with the system default libraries (libc, etc.)

-nostartfiles

Do not link with the system startup files (crt0.c, etc.)

-nostdinc

Do not use the system include paths (/usr/include, etc.)

-nostdlib

Do not link with the system default libraries or startup files.

-O [
level ]

Enable compiler optimizations. Currently, for levels higher than zero, this defines __OPTIMIZE__ in the cpp (1) preprocessor, and passes -xdce , -xdeljumps , -xtemps and -xinline to ccom (1). If no level is given the optimization level is -O1 . Optimizations can be disabled using -O0 . In situations where multiple optimization flags are given, the last flag is the one used.

-o outfile

Save result to outfile .

-P

Inhibit generation of line markers in preprocessor output. This is sometimes useful when running the preprocessor on something other than C code.

-pg

Enable profiling on the generated executable.

-pthread

Defines the _PTHREADS preprocessor identifier for cpp (1), and adds -lpthread to the ld (1) linker arguments.

-S

Stop after compilation by ccom (1). Do not assemble and do not link. The resulting assembler-language output is saved as a filename with a “.s” suffix unless the -o option is used. Note: cannot be combined with -o if multiple files are given.

-s

Passed to ld (1) to remove all symbol table and relocation information from the generated executable. This option is silently ignored if cc does not invoke the linker.

-shared

Create a shared object of the result. Tells the linker not to generate an executable.

-static

Do not use dynamic linkage. By default, it will link using the dynamic linker options and/or shared objects for the platform.

-std= standard

Compile to the specified standard . Accepted values for standard are c89 , c99 , gnu89 , gnu99 , gnu9x , and c11 .

-t

Passed to cpp (1) to suppress some default macro definitions and enable use of traditional C preprocessor syntax.

-U macro

Passes to the cpp (1) preprocessor to remove the initial macro definition.

-v

Outputs the version of cc and shows commands as they are run with their command line arguments.

-###

As per -v except that the commands are not run, and the arguments will be quoted if they contain unusual characters or spaces.

-Wa , options

Comma separated list of options for the assembler.

-Wc , options

Comma separated list of options for the compiler.

-Wl , options

Comma separated list of options for the linker.

-Wp , options

Comma separated list of options for the preprocessor.

-X

Don’t remove temporary files on exit.

-x language

GCC compatibility option; specify the language in use rather than interpreting the filename extension. Currently known language values are none , c , c++ , assembler and assembler-with-cpp . Any unknown -x options are passed to ccom (1).

-z keyword

Passed to ld (1). Please refer to the documentation of your linker for acceptable values of keyword .

Predefined Macros

A few macros are predefined by cc when sent to cpp (1).

__PCC__ Set to the major version of pcc (1). These macros can be used to select code based on pcc (1) compatibility. See the -v option.

__PCC_MINOR__ Set to the minor version.

__PCC_MINORMINOR__ Set to the minor-minor version — the number after the minor version.

_PTHREADS Defined when -pthread switch is used.

__ASSEMBLER__ Defined when input files have a .S suffix, or if the -x assembler-with-cpp option is specified.

Also system- and/or machine-dependent macros may also be predefined; for example: __NetBSD__, __ELF__, and __i386__.

SEE ALSO

as (1), ccom (1), cpp (1), ld (1)

HISTORY

The cc command comes from the original Portable C Compiler by S. C. Johnson, written in the late 70’s.

This product includes software developed or owned by Caldera International, Inc. Debian June 20, 2014 CC (1)