libstdc++-v3/README

   1 file: libstdc++-v3/README
   2
   3 New users may wish to point their web browsers to the file documentation.html
   4 in the 'docs/html' subdirectory.  It contains brief building instructions and
   5 notes on how to configure the library in interesting ways.
   6
   7
   8 Instructions for configuring and building this snapshot appear
   9 in docs/html/install.html.
  10
  11 This directory contains the files needed to create [a still broken
  12 subset of] an ISO Standard C++ Library.
  13
  14 It has subdirectories:
  15
  16   docs
  17      Files in HTML and text format that document usage, quirks of the
  18      implementation, and contributor checklists.
  19
  20   include/bits
  21      Files included by standard headers and by other files in
  22      the bits directory.  Includes a set of files bits/std_xxxx.h
  23      that implement the standard headers <xxxx>.
  24
  25   include/std
  26      Files meant to be found by #include <name> directives in
  27      standard-conforming user programs.
  28
  29   include/ext
  30      Headers that define extensions to the standard library.  No
  31      standard header refers to any of them.
  32
  33   include/backward
  34      Headers provided for backward compatibility, such as <iostream.h>.
  35      They are not used in this library.
  36
  37   include/c
  38      Headers intended to directly include standard C headers.
  39      [NB: this can be enabled via --enable-cheaders=c]
  40
  41   include/c_std
  42      Headers intended to include standard C headers, and put select
  43      names into the std:: namespace.
  44      [NB: this is the default, and is the same as --enable-cheaders=c_std]
  45
  46   include/c_shadow
  47      Headers intended to shadow standard C headers provided by an
  48      underlying OS or C library, and other headers depended on directly
  49      by C++ headers (e.g. unistd.h).  These are meant to wrap the names
  50      defined there into the _C_legacy namespace.
  51      [NB: this can be enabled via --enable-cheaders=c_shadow]
  52
  53   src
  54      Files that are used in constructing the library, but are not
  55      installed.
  56
  57   testsuites/17_* to 27_*
  58      Test programs are here, and may be used to begin to exercise the
  59      library.  Support for "make check" and "make check-install" is
  60      complete, and runs through all the subdirectories here when this
  61      command is issued from the build directory.  Please note that
  62      "make check" requires DejaGNU 1.4 or later to be installed.  Please
  63      note that "make check-script" calls the script mkcheck, which
  64      requires bash, and which may need the paths to bash adjusted to
  65      work properly, as /bin/bash is assumed.
  66
  67 Other subdirectories contain variant versions of certain files
  68 that are meant to be copied or linked by the configure script.
  69 Currently these are:
  70
  71   config/cpu
  72   config/os
  73   config/io
  74   config/locale
  75
  76 Files needed only to construct the library, but not installed,
  77 are in src/.  Files to be copied as part of an installation are
  78 all found in the subdirectories mentioned above.  (A configure
  79 script may link files from another directory into one of these.)
  80
  81 Note that glibc also has a bits/ subdirectory.  We will either
  82 need to be careful not to collide with names in its bits/
  83 directory; or rename bits to (e.g.) cppbits/.
  84
  85 In files throughout the system, lines marked with an "XXX" indicate
  86 a bug or incompletely-implemented feature.  Lines marked "XXX MT"
  87 indicate a place that may require attention for multi-thread safety.