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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
95 .Sh IMPLEMENTATION NOTES
98 compilers are selected by setting the
106 are actually links to the
108 deflector program which is responsible for executing the
109 correct programs (located in
110 .Pa /usr/libexec/$CCVER ) .
114 has 2 compilers in base, one of which is the default compiler and the other
115 is either a newer or older version.
116 In order to allow additional non-base compilers into
121 .Pa /usr/libexec/custom
124 setting is not one of the compilers in base.
125 This directory contains a
127 wrapper script (and some links to it).
128 The wrapper script then takes care of making the compiler look and behave
129 like a compiler in base.
133 specify paths and flags for the
134 .Pa /usr/libexec/custom/cc
137 .Bl -tag -width ".Pa /etc/compilers.conf" -compact
138 .It Pa /etc/compilers.conf
139 external compiler configuration file
142 Once configured the compiler can be used like this:
143 .Bd -literal -offset indent
144 env CCVER=<version> make
147 To try building world and kernel, use:
148 .Bd -literal -offset indent
150 env WORLD_CCVER=<version> make buildworld
151 env WORLD_CCVER=<version> make buildkernel KERNCONF=MYCONF
159 file first appeared in