.\" Process this file with
.\" groff -man -Tascii gcc-config.8
.\"
.\" TODO: 
.\"       - profile kann als Zahl oder Name uebergeben werden
.\"       - TARGET-VER -> TARGET VER
.TH GCC-CONFIG 8 "Gentoo Linux" "2007" "GCC-CONFIG"
.SH NAME
gcc-config \- Change or show current cc/gcc profile
.SH SYNOPSIS
.BI "gcc-config [options] [profile]
.SH DESCRIPTION
This program changes or shows the current (GNU) C compiler \fIprofile\fP. In 
general, a profile comprises the \fBCHOST\fP (aka target platform) and the 
version of the C compiler, e.g. i686-pc-linux-gnu-3.4.6

Only root is allowed to change the current profile.
.SH ARGUMENTS
Whenever an option allows the parameter \fIprofile\fP you may specify it by its
complete \fIprofile name\fP (e.g. i686-pc-linux-gnu-3.4.6) or by the number provided through
the gcc-config's parameter \fB-l\fP.
.SH OPTIONS
.TP
.BI "-O, --use-old"
Use the old \fIprofile\fP if one was selected.
.TP
.BI "-f, --force"
Make sure all config files are regenerated.
.TP
.BI "-p, --use-portage-chost"
Only set to given profile if its \fBCHOST\fP is the same as that set for 
portage in \fI/etc/make.conf\fP or one of other portage config files (see 
\fBFILES\fP below).
.TP
.BI "-c, --get-current-profile"
Print currently used C compiler profile.
.TP
.BI "-l, --list-profiles"
Print a list of available C compiler profiles. The currently used is marked by
a green asterisk. Available cross-compilers are marked by a cyan asterisk.
.TP
.BI "-S, --split-profile [profile name]" 
Split profile name into its components comprising the TARGET and compiler VERSION.
.TP
.BI "-E, --print-environ"
Print environment that can be used to setup the current C compiler profile, or
a specified one.
.TP
.BI "-B, --get-bin-path [profile]"
Print path where binaries of the given/current profile are located.
.TP
.BI "-L, --get-lib-path [profile]"
Print path where libraries of the given/current profile are located.
.TP
.BI "-X, --get-stdcxx-incdir"
Print path where C++ compiler include files of the given/current profile are 
located.
.TP
.BI "-h, --help"
Print short help information and exit.
.TP
.BI "-V, --version"
Print gcc-config's version and exit.
.SH ENVIRONMENT
.TP
.B "ROOT"
.RS
Specifies another ROOT directory for searching profile configuration files (see
\fBFILES\fP below).
.RE
.SH FILES
.TP
.BR \fI/etc/profile\fP
Configuration setup for the environment of Bourne-shell derivative login 
shells.
.TP
.BR \fI/etc/make.conf\fP
Contains current CHOST configuration.
.TP
.BR \fI/etc/env.d/05gcc\fP
Main configuraiton of the currently used profile.
.TP
.BR \fI/etc/env.d/05gcc-*\fP
PATH and ROOTPATH of the currently used profile.
.TP
.BR \fI/etc/env.d/gcc/config\fP
Contains the currently used C compiler profile.
.TP
.BR \fI/etc/env.d/gcc/\fP
Directory containing all profiles.
.TP
.BR \fI/etc/init.d/functions.sh\fP
Helper functions to analyze the system environment.
.TP
.BR \fI/etc/ld.so.conf\fP
Paths to system-wide libraries.
.SH NOTES
Changing your current C compiler profile to a new major version may result in 
an inconsistendly build Gentoo installation. Consider to rebuild all your
Gentoo packages with "emerge -e world" if you finally change to a new major 
version.
.SH REPORTING BUGS
Please report bugs via http://bugs.gentoo.org/
.SH AUTHORS
Mike Frysinger <vapier@gentoo.org>
.SH SEE ALSO
.BR emerge (1),
.BR env-update (1).
.TP
For building a cross compiler the Gentoo-way see 
\fIhttp://dev.gentoo.org/~vapier/CROSS-COMPILE-HOWTO\fP.