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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 variable definitions are mandatory:
57 .Bl -tag -width ".Va <version>_INCOPTCXX"
72 .It Va <version>_INCOPT
73 The include flags passed to the invocation of every version of c compiler,
74 c++ compiler, and pre-processor program.
75 This is normally set to the
76 predefined STD_INCOPT variable.
77 .It Va <version>_INCOPTCXX
78 The include flags passed to the invocation of every version of c++
80 This is normally set to either the DPORT_GCC_STD_INCOPTXX or
81 DPORT_CLANG_STD_INCOPTXX predefined variables.
84 These variables are optionally available:
85 .Bl -tag -width ".Va <version>_INCOPTCXX"
97 coverage testing tool.
99 .\" Uncomment the following after clang is brought into base
100 .\".It Va <version>_CLANG
101 .\"The pathname of the
104 .\".It Va <version>_CLANGCXX
105 .\"The pathname of the
108 .\".It Va <version>_CLANGCPP
109 .\"The pathname of the
113 .It Va <version>_CFLAGS
114 Additional flags to pass to the c compilers.
115 .It Va <version>_CXXFLAGS
116 Additional flags to pass to the c++ compilers.
117 .It Va <version>_CPPFLAGS
118 Additional flags to pass to the pre-processors.
121 Currently, defaults are provided for the
125 .Pa ( lang/clang35 ) ,
133 .Sh IMPLEMENTATION NOTES
136 compilers are selected by setting the
144 are actually links to the
146 deflector program which is responsible for executing the
147 correct programs (located in
148 .Pa /usr/libexec/$CCVER ) .
152 has 2 compilers in base, one of which is the default compiler and the other
153 is either a newer or older version.
154 In order to allow additional non-base compilers into
159 .Pa /usr/libexec/custom
162 setting is not one of the compilers in base.
163 This directory contains a
165 wrapper script (and some links to it).
166 The wrapper script then takes care of making the compiler look and behave
167 like a compiler in base.
171 specify paths and flags for the
172 .Pa /usr/libexec/custom/cc
175 .Bl -tag -width ".Pa /etc/compilers.conf" -compact
176 .It Pa /etc/compilers.conf
177 external compiler configuration file
180 Once configured the compiler can be used like this:
181 .Bd -literal -offset indent
182 env CCVER=<version> make
185 To try building world and kernel, use:
186 .Bd -literal -offset indent
188 env WORLD_CCVER=<version> make buildworld
189 env WORLD_CCVER=<version> make buildkernel KERNCONF=MYCONF
197 file first appeared in