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1 @c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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2 @c 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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3 @c This is part of the GCC manual.
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4 @c For copying conditions, see the file gcc.texi.
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5
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6 @node Configuration Files
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7 @subsubsection Files Created by @code{configure}
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8
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9 Here we spell out what files will be set up by @file{configure} in the
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10 @file{gcc} directory. Some other files are created as temporary files
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11 in the configuration process, and are not used in the subsequent
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12 build; these are not documented.
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13
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14 @itemize @bullet
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15 @item
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16 @file{Makefile} is constructed from @file{Makefile.in}, together with
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17 the host and target fragments (@pxref{Fragments, , Makefile
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18 Fragments}) @file{t-@var{target}} and @file{x-@var{host}} from
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19 @file{config}, if any, and language Makefile fragments
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20 @file{@var{language}/Make-lang.in}.
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21 @item
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22 @file{auto-host.h} contains information about the host machine
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23 determined by @file{configure}. If the host machine is different from
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24 the build machine, then @file{auto-build.h} is also created,
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25 containing such information about the build machine.
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26 @item
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27 @file{config.status} is a script that may be run to recreate the
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28 current configuration.
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29 @item
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30 @file{configargs.h} is a header containing details of the arguments
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31 passed to @file{configure} to configure GCC, and of the thread model
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32 used.
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33 @item
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34 @file{cstamp-h} is used as a timestamp.
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35 @item
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36 @file{fixinc/Makefile} is constructed from @file{fixinc/Makefile.in}.
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37 @item
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38 @file{gccbug}, a script for reporting bugs in GCC, is constructed from
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39 @file{gccbug.in}.
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40 @item
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41 @file{intl/Makefile} is constructed from @file{intl/Makefile.in}.
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42 @item
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43 If a language @file{config-lang.in} file (@pxref{Front End Config, ,
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44 The Front End @file{config-lang.in} File}) sets @code{outputs}, then
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45 the files listed in @code{outputs} there are also generated.
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46 @end itemize
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47
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48 The following configuration headers are created from the Makefile,
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49 using @file{mkconfig.sh}, rather than directly by @file{configure}.
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50 @file{config.h}, @file{bconfig.h} and @file{tconfig.h} all contain the
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51 @file{xm-@var{machine}.h} header, if any, appropriate to the host,
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52 build and target machines respectively, the configuration headers for
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53 the target, and some definitions; for the host and build machines,
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54 these include the autoconfigured headers generated by
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55 @file{configure}. The other configuration headers are determined by
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56 @file{config.gcc}. They also contain the typedefs for @code{rtx},
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57 @code{rtvec} and @code{tree}.
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58
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59 @itemize @bullet
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60 @item
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61 @file{config.h}, for use in programs that run on the host machine.
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62 @item
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63 @file{bconfig.h}, for use in programs that run on the build machine.
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64 @item
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65 @file{tconfig.h}, for use in programs and libraries for the target
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66 machine.
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67 @item
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68 @file{tm_p.h}, which includes the header @file{@var{machine}-protos.h}
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69 that contains prototypes for functions in the target @file{.c} file.
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70 FIXME: why is such a separate header necessary?
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71 @end itemize
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