1.\" 2.\" Copyright (c) 2009 3.\" The DragonFly Project. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in 13.\" the documentation and/or other materials provided with the 14.\" distribution. 15.\" 3. Neither the name of The DragonFly Project nor the names of its 16.\" contributors may be used to endorse or promote products derived 17.\" from this software without specific, prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 25.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 28.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 29.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.Dd October 14, 2014 33.Dt COMPILERS.CONF 5 34.Os 35.Sh NAME 36.Nm compilers.conf 37.Nd configuration file for external compilers 38.Sh SYNOPSIS 39.Pa /etc/compilers.conf 40.Sh DESCRIPTION 41The 42.Nm 43file allows to configure 44.Dq external 45compilers for usage with the 46.Dx 47.Xr build 7 48system. 49.Pp 50The 51.Pa /etc/defaults/compilers.conf 52file specifies the default settings for all variables, the 53.Pa /etc/compilers.conf 54file specifies override settings. 55.Pp 56The following variables are available: 57.Bl -tag -width ".Va <version>_CPPFLAGS" 58.It Va <version>_CC 59The pathname of the 60.Nm cc 61program of the compiler. 62.It Va <version>_CFLAGS 63Any additional flags to pass to 64.Va <version>_CC . 65.It Va <version>_CPP 66The pathname of the 67.Nm cpp 68program of the compiler. 69.It Va <version>_CPPFLAGS 70Any additional flags to pass to 71.Va <version>_CPP . 72.It Va <version>_CXX 73The pathname of the 74.Nm c++ 75program of the compiler. 76.It Va <version>_CXXFLAGS 77Any additional flags to pass to 78.Va <version>_CXX . 79.El 80.Pp 81Currently, defaults are provided for 82.Nm gcc48 83(installed from 84.Xr dports 7 Ap s 85.Pa lang/gcc48 ) , 86.Nm gcc49 87(installed from 88.Xr dports 7 Ap s 89.Pa lang/gcc49 ) , 90and 91.Nm gcc5 92(installed from 93.Xr dports 7 Ap s 94.Pa lang/gcc5 ) . 95.Sh IMPLEMENTATION NOTES 96In 97.Dx , 98compilers are selected by setting the 99.Ev CCVER 100variable. 101The 102.Pa cpp , 103.Pa cc , 104etc\&. programs in 105.Pa /usr/bin 106are actually links to the 107.Xr objformat 1 108deflector program which is responsible for executing the 109correct programs (located in 110.Pa /usr/libexec/$CCVER ) . 111.Pp 112Traditionally, 113.Dx 114has 2 compilers in base, one of which is the default compiler and the other 115is either a newer or older version. 116In order to allow additional non-base compilers into 117.Dx Ap s 118build process, 119.Xr objformat 1 120deflects to 121.Pa /usr/libexec/custom 122when 123.Ev CCVER Ap s 124setting is not one of the compilers in base. 125This directory contains a 126.Pa cc 127wrapper script (and some links to it). 128The wrapper script then takes care of making the compiler look and behave 129like a compiler in base. 130.Pp 131The settings in 132.Nm 133specify paths and flags for the 134.Pa /usr/libexec/custom/cc 135script. 136.Sh FILES 137.Bl -tag -width ".Pa /etc/compilers.conf" -compact 138.It Pa /etc/compilers.conf 139external compiler configuration file 140.El 141.Sh EXAMPLES 142Once configured the compiler can be used like this: 143.Bd -literal -offset indent 144env CCVER=<version> make 145.Ed 146.Pp 147To try building world and kernel, use: 148.Bd -literal -offset indent 149cd /usr/src 150env WORLD_CCVER=<version> make buildworld 151env WORLD_CCVER=<version> make buildkernel KERNCONF=MYCONF 152.Ed 153.Sh SEE ALSO 154.Xr objformat 1 , 155.Xr build 7 156.Sh HISTORY 157The 158.Nm 159file first appeared in 160.Dx 2.3 . 161