file: libstdc++-v3/README
-New users may wish to point their web browsers to the file documentation.html
-in the 'docs/html' subdirectory. It contains brief building instructions and
-notes on how to configure the library in interesting ways.
+New users may wish to point their web browsers to the file
+documentation.html in the 'docs/html' subdirectory. It contains brief
+building instructions and notes on how to configure the library in
+interesting ways.
+Instructions for configuring and building appear in
+docs/html/install.html.
-Instructions for configuring and building this snapshot appear
-in docs/html/install.html.
-
-This directory contains the files needed to create [a still broken
-subset of] an ISO Standard C++ Library.
+This directory contains the files needed to create an ISO Standard C++
+Library.
It has subdirectories:
docs
- Files in HTML and text format that document usage, quirks of the
- implementation, and contributor checklists.
-
- include/bits
- Files included by standard headers and by other files in
- the bits directory. Includes a set of files bits/std_xxxx.h
- that implement the standard headers <xxxx>.
-
- include/std
- Files meant to be found by #include <name> directives in
- standard-conforming user programs. These headers are not
- referred to by other headers, because such dependencies
- confuse Make (leading it to delete them, all too often).
- Installations may substitute symbolic links in place of
- these files.
-
- include/ext
- Headers that define extensions to the standard library. No
- standard header refers to any of them.
-
- include/backward
- Headers provided for backward compatibility, such as <iostream.h>.
- They are not used in this library.
+ Files in HTML and text format that document usage, quirks of the
+ implementation, and contributor checklists.
+
+ include
+ All header files for the C++ library are within this directory,
+ modulo specific runtime-related files that are in the libsupc++
+ directory.
+
+ include/std
+ Files meant to be found by #include <name> directives in
+ standard-conforming user programs.
+
+ include/c
+ Headers intended to directly include standard C headers.
+ [NB: this can be enabled via --enable-cheaders=c]
+
+ include/c_std
+ Headers intended to include standard C headers, and put select
+ names into the std:: namespace.
+ [NB: this is the default, and is the same as --enable-cheaders=c_std]
+
+ include/c_shadow
+ Headers intended to shadow standard C headers provided by an
+ underlying OS or C library, and other headers depended on directly
+ by C++ headers (e.g. unistd.h). These are meant to wrap the names
+ defined there into the _C_legacy namespace.
+ [NB: this can be enabled via --enable-cheaders=c_shadow]
+
+ include/bits
+ Files included by standard headers and by other files in
+ the bits directory.
+
+ include/backward
+ Headers provided for backward compatibility, such as <iostream.h>.
+ They are not used in this library.
+
+ include/ext
+ Headers that define extensions to the standard library. No
+ standard header refers to any of them.
+
+ scripts
+ Scripts that are used during the configure, build, make, or test
+ process.
src
- Files that are used in constructing the library, but are not
- installed.
-
- testsuites/17_* to 27_*
- Test programs are here, and may be used to begin to exercise the
- library. Support for "make check" and "make check-install" is
- complete, and runs through all the subdirectories here when this
- command is issued from the build directory. Please note that
- "make check" calls the script mkcheck, which requires bash, and which
- may need the paths to bash adjusted to work properly, as /bin/bash is
- assumed.
-
- shadow
- Headers intended to shadow standard C headers provided by an
- underlying OS or C library, and other headers depended on directly
- by C++ headers (e.g. unistd.h). These are meant to wrap the names
- defined there into the _C_legacy namespace.
- [NB: this can be enabled via --enable-cshadow-headers.]
-
- cshadow
- The contents of this directory are constructed by scripts which
- examine the underlying C headers to discover other headers they
- depend on. These headers are wrappers for them.
- [NB: this is still experimental, and is not currently used.]
+ Files that are used in constructing the library, but are not
+ installed.
+
+ testsuites/[backward, demangle, ext, performance, thread, 17_* to 27_*]
+ Test programs are here, and may be used to begin to exercise the
+ library. Support for "make check" and "make check-install" is
+ complete, and runs through all the subdirectories here when this
+ command is issued from the build directory. Please note that
+ "make check" requires DejaGNU 1.4 or later to be installed. Please
+ note that "make check-script" calls the script mkcheck, which
+ requires bash, and which may need the paths to bash adjusted to
+ work properly, as /bin/bash is assumed.
Other subdirectories contain variant versions of certain files
that are meant to be copied or linked by the configure script.
Currently these are:
+ config/abi
config/cpu
+ config/io
+ config/locale
config/os
-Files needed only to construct the library, but not installed,
-are in src/. Files to be copied as part of an installation are
-all found in the subdirectories mentioned above. (A configure
-script may link files from another directory into one of these.)
-
-In a normal installation the bits/ directory is copied
-under the std/ directory, and arranged to be searched only
-when an include directive specifies a filename of "bits/..."
-or <bits/...>. When building the library, we use
+In addition, two subdirectories are convenience libraries:
- -I. -Iinclude/std -Iinclude -Iconfig/os/* -Iconfig/cpu/*
+ libmath
+ Support routines needed for C++ math. Only needed if the
+ underlying "C" implementation is non-existent, in particular
+ required or optimal long double, long long, and C99 functionality.
-to get the same effect.
+ libsupc++
+ Contains the runtime library for C++, including exception
+ handling and memory allocation and deallocation, RTTI, terminate
+ handlers, etc.
Note that glibc also has a bits/ subdirectory. We will either
need to be careful not to collide with names in its bits/
directory; or rename bits to (e.g.) cppbits/.
-To install libstdc++ you need GNU make. The makefiles do not work with
-any other make.
-
In files throughout the system, lines marked with an "XXX" indicate
a bug or incompletely-implemented feature. Lines marked "XXX MT"
indicate a place that may require attention for multi-thread safety.
-
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