@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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@c 1999, 2000, 2001, 2002, 2010 Free Software Foundation, Inc.
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@c 1999, 2000, 2001, 2002, 2010 Free Software Foundation, Inc.
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@c This is part of the GCC manual.
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@c This is part of the GCC manual.
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@c For copying conditions, see the file gcc.texi.
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@c For copying conditions, see the file gcc.texi.
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@node Configuration Files
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@node Configuration Files
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@subsubsection Files Created by @code{configure}
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@subsubsection Files Created by @code{configure}
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Here we spell out what files will be set up by @file{configure} in the
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Here we spell out what files will be set up by @file{configure} in the
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@file{gcc} directory. Some other files are created as temporary files
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@file{gcc} directory. Some other files are created as temporary files
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in the configuration process, and are not used in the subsequent
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in the configuration process, and are not used in the subsequent
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build; these are not documented.
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build; these are not documented.
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@itemize @bullet
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@itemize @bullet
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@item
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@item
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@file{Makefile} is constructed from @file{Makefile.in}, together with
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@file{Makefile} is constructed from @file{Makefile.in}, together with
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the host and target fragments (@pxref{Fragments, , Makefile
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the host and target fragments (@pxref{Fragments, , Makefile
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Fragments}) @file{t-@var{target}} and @file{x-@var{host}} from
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Fragments}) @file{t-@var{target}} and @file{x-@var{host}} from
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@file{config}, if any, and language Makefile fragments
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@file{config}, if any, and language Makefile fragments
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@file{@var{language}/Make-lang.in}.
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@file{@var{language}/Make-lang.in}.
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@item
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@item
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@file{auto-host.h} contains information about the host machine
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@file{auto-host.h} contains information about the host machine
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determined by @file{configure}. If the host machine is different from
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determined by @file{configure}. If the host machine is different from
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the build machine, then @file{auto-build.h} is also created,
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the build machine, then @file{auto-build.h} is also created,
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containing such information about the build machine.
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containing such information about the build machine.
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@item
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@item
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@file{config.status} is a script that may be run to recreate the
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@file{config.status} is a script that may be run to recreate the
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current configuration.
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current configuration.
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@item
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@item
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@file{configargs.h} is a header containing details of the arguments
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@file{configargs.h} is a header containing details of the arguments
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passed to @file{configure} to configure GCC, and of the thread model
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passed to @file{configure} to configure GCC, and of the thread model
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used.
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used.
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@item
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@item
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@file{cstamp-h} is used as a timestamp.
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@file{cstamp-h} is used as a timestamp.
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@item
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@item
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@file{gccbug}, a script for reporting bugs in GCC, is constructed from
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@file{gccbug}, a script for reporting bugs in GCC, is constructed from
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@file{gccbug.in}.
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@file{gccbug.in}.
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@item
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@item
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If a language @file{config-lang.in} file (@pxref{Front End Config, ,
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If a language @file{config-lang.in} file (@pxref{Front End Config, ,
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The Front End @file{config-lang.in} File}) sets @code{outputs}, then
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The Front End @file{config-lang.in} File}) sets @code{outputs}, then
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the files listed in @code{outputs} there are also generated.
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the files listed in @code{outputs} there are also generated.
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@end itemize
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@end itemize
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The following configuration headers are created from the Makefile,
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The following configuration headers are created from the Makefile,
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using @file{mkconfig.sh}, rather than directly by @file{configure}.
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using @file{mkconfig.sh}, rather than directly by @file{configure}.
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@file{config.h}, @file{bconfig.h} and @file{tconfig.h} all contain the
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@file{config.h}, @file{bconfig.h} and @file{tconfig.h} all contain the
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@file{xm-@var{machine}.h} header, if any, appropriate to the host,
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@file{xm-@var{machine}.h} header, if any, appropriate to the host,
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build and target machines respectively, the configuration headers for
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build and target machines respectively, the configuration headers for
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the target, and some definitions; for the host and build machines,
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the target, and some definitions; for the host and build machines,
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these include the autoconfigured headers generated by
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these include the autoconfigured headers generated by
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@file{configure}. The other configuration headers are determined by
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@file{configure}. The other configuration headers are determined by
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@file{config.gcc}. They also contain the typedefs for @code{rtx},
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@file{config.gcc}. They also contain the typedefs for @code{rtx},
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@code{rtvec} and @code{tree}.
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@code{rtvec} and @code{tree}.
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@itemize @bullet
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@itemize @bullet
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@item
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@item
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@file{config.h}, for use in programs that run on the host machine.
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@file{config.h}, for use in programs that run on the host machine.
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@item
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@item
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@file{bconfig.h}, for use in programs that run on the build machine.
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@file{bconfig.h}, for use in programs that run on the build machine.
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@item
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@item
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@file{tconfig.h}, for use in programs and libraries for the target
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@file{tconfig.h}, for use in programs and libraries for the target
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machine.
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machine.
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@item
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@item
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@file{tm_p.h}, which includes the header @file{@var{machine}-protos.h}
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@file{tm_p.h}, which includes the header @file{@var{machine}-protos.h}
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that contains prototypes for functions in the target @file{.c} file.
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that contains prototypes for functions in the target @file{.c} file.
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FIXME: why is such a separate header necessary?
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FIXME: why is such a separate header necessary?
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@end itemize
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@end itemize
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