xref: /dflybsd-src/share/man/man5/compilers.conf.5 (revision 1c4f2fa48567f20b32ef2963ca51c6d456c4b58b)

.\"
.\" Copyright (c) 2009
.\"	The DragonFly Project.  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. Neither the name of The DragonFly Project 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 COPYRIGHT HOLDERS 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
.\" COPYRIGHT HOLDERS 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.
.\"
.Dd February 23, 2010
.Os
.Dt COMPILERS.CONF 5
.Sh NAME
.Nm compilers.conf
.Nd configuration file for external compilers
.Sh SYNOPSIS
.Pa /etc/compilers.conf
.Sh DESCRIPTION
The
.Nm
file allows to configure
.Dq external
compilers for usage with the
.Dx
.Xr build 7
system.
.Pp
The
.Pa /etc/defaults/compilers.conf
file specifies the default settings for all variables, the
.Pa /etc/compilers.conf
file specifies override settings.
.Pp
The following variables are available:
.Bl -tag -width ".Va <version>_CPPFLAGS"
.It Va <version>_CC
The pathname of the
.Nm cc
program of the compiler.
.It Va <version>_CFLAGS
Any additional flags to pass to
.Va <version>_CC .
.It Va <version>_CPP
The pathname of the
.Nm cpp
program of the compiler.
.It Va <version>_CPPFLAGS
Any additional flags to pass to
.Va <version>_CPP .
.It Va <version>_CXX
The pathname of the
.Nm c++
program of the compiler.
.It Va <version>_CXXFLAGS
Any additional flags to pass to
.Va <version>_CXX .
.It Va <version>_VERSION
What to output when the
.Fl dumpversion
option is used.
This helps
.Nm clang
with
.Xr pkgsrc 7 .
.El
.Pp
Once configured the compiler can then be used like this:
.Bd -literal -offset indent
env CCVER=clang make
.Ed
.Pp
To build world and kernel, use the following instructions:
.Bd -literal -offset indent
cd /usr/src
fetch http://leaf.dragonflybsd.org/~swildner/world_clang.diff
patch -p1 <world_clang.diff
env WORLD_CCVER=clang make -DNO_GCC44 buildworld
env WORLD_CCVER=clang make buildkernel KERNCONF=MYCONF
.Ed
.Pp
Currently, defaults are provided for
.Nm clang
(installed from pkgsrc's
.Pa lang/clang )
and
.Nm clangsvn
(installed from SVN trunk as described in
.Pa http://clang.llvm.org/get_started.html ) .
.Sh FILES
.Bl -tag -width ".Pa /etc/compilers.conf" -compact
.It Pa /etc/compilers.conf
external compiler configuration file
.El
.Sh SEE ALSO
.Xr objformat 1 ,
.Xr build 7
.Sh HISTORY
The
.Nm
file first appeared in
.Dx 2.3 .