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37 .Nd configuration file for external compilers
39 .Pa /etc/compilers.conf
43 file allows to configure
45 compilers for usage with the
51 .Pa /etc/defaults/compilers.conf
52 file specifies the default settings for all variables, the
53 .Pa /etc/compilers.conf
54 file specifies override settings.
56 The following variables are available:
57 .Bl -tag -width ".Va <version>_CPPFLAGS"
61 program of the compiler.
62 .It Va <version>_CFLAGS
63 Any additional flags to pass to
68 program of the compiler.
69 .It Va <version>_CPPFLAGS
70 Any additional flags to pass to
75 program of the compiler.
76 .It Va <version>_CXXFLAGS
77 Any additional flags to pass to
81 Currently, defaults are provided for
87 (installed from SVN trunk as described in
88 .Pa http://clang.llvm.org/get_started.html ) ,
97 .Pa lang/pcc-current ) .
98 .Sh IMPLEMENTATION NOTES
101 compilers are selected by setting the
109 are actually links to the
111 deflector program which is responsible for executing the
112 correct programs (located in
113 .Pa /usr/libexec/$CCVER ) .
117 has 2 compilers in base, one of which is the default compiler and the other
118 is either a newer or older version.
119 In order to allow additional non-base compilers into
124 .Pa /usr/libexec/custom
127 setting is not one of the compilers in base.
128 This directory contains a
130 wrapper script (and some links to it).
131 The wrapper script then takes care of making the compiler look and behave
132 like a compiler in base.
136 specify paths and flags for the
137 .Pa /usr/libexec/custom/cc
140 .Bl -tag -width ".Pa /etc/compilers.conf" -compact
141 .It Pa /etc/compilers.conf
142 external compiler configuration file
145 Once configured the compiler can be used like this:
146 .Bd -literal -offset indent
150 To try building world and kernel, use:
151 .Bd -literal -offset indent
153 env WORLD_CCVER=<version> make -DNO_GCC47 buildworld
154 env WORLD_CCVER=<version> make buildkernel KERNCONF=MYCONF
162 file first appeared in