Delay evaluation of alignment expressions in output sections

[deliverable/binutils-gdb.git] / gdb / README

diff --git a/gdb/README b/gdb/README
index 0ee97050be33b82e6159374cceb7e50cdcaca990..e43887ffcdfa749290fc01ba1b304d855a35d2dc 100644 (file)
--- a/gdb/README
+++ b/gdb/README
@@ -89,6 +89,14 @@ features.  Expat will be linked in if it is available at build time, or
 those features will be disabled.  The latest version of Expat should be
 available from `http://expat.sourceforge.net'.
 
+   GDB uses GNU MPFR, a library for multiple-precision floating-point
+computation with correct rounding, to emulate target floating-point
+arithmetic during expression evaluation when the target uses different
+floating-point formats than the host.  MPFR will be linked in if it is
+available at build time.  If GNU MPFR it is not available, GDB will fall
+back to using host floating-point arithmetic.  The latest version of
+GNU MPFR should be available from `http://www.mpfr.org'.
+
    GDB can be used as a cross-debugger, running on a machine of one
 type while debugging a program running on a machine of another type.
 See below.
@@ -144,7 +152,7 @@ format.  On its own, TeX cannot read, much less typeset a Texinfo file.
 `gdb-VERSION/texinfo' directory.
 
    If you have TeX and a DVI printer program installed, you can typeset
-and print this manual.  First switch to the the `gdb' subdirectory of
+and print this manual.  First switch to the `gdb' subdirectory of
 the main source directory (for example, to `gdb-VERSION/gdb') and then type:
 
       make doc/gdb.dvi
@@ -446,10 +454,10 @@ prefer; but you may abbreviate option names if you use `--'.
      Build GDB with the gdbtk GUI interface.  Requires TCL/Tk to be
      installed.
 
-`--with-libunwind'
-     Use the libunwind library for unwinding function call stack.  See
-     http://www.nongnu.org/libunwind/index.html fro details.
-     Supported only on some platforms.
+`--with-libunwind-ia64'
+     Use the libunwind library for unwinding function call stack on ia64
+     target platforms.
+     See http://www.nongnu.org/libunwind/index.html for details.
 
 `--with-curses'
      Use the curses library instead of the termcap library, for
@@ -475,6 +483,15 @@ prefer; but you may abbreviate option names if you use `--'.
      have libexpat installed, you can  get the latest version from
      http://expat.sourceforge.net.
 
+`--with-mpfr'
+     Build GDB with the GNU MPFR library.  (Done by default if
+     GNU MPFR is installed and found at configure time.)  This library
+     is used to emulate target floating-point arithmetic during expression
+     evaluation when the target uses different floating-point formats than
+     the host.  If GNU MPFR is not available, GDB will fall back to using
+     host floating-point arithmetic.  If your host does not have GNU MPFR
+     installed, you can get the latest version from http://www.mpfr.org.
+
 `--with-python[=PATH]'
      Build GDB with Python scripting support.  (Done by default if
      libpython is present and found at configure time.)  Python makes
@@ -577,15 +594,16 @@ try typing `M-x gdb RET'.
 Writing Code for GDB
 =====================
 
-   There is a lot of information about writing code for GDB in the
-internals manual, distributed with GDB in gdb/doc/gdbint.texinfo.  You
-can read it by hand, print it by using TeX and texinfo, or process it
-into an `info' file for use with Emacs' info mode or the standalone
-`info' program.
+   There is information about writing code for GDB in the file
+`CONTRIBUTE' and at the website:
+
+       http://www.gnu.org/software/gdb/
+
+in particular in the wiki.
 
    If you are pondering writing anything but a short patch, especially
-take note of the information about copyrights in the node Submitting
-Patches.  It can take quite a while to get all the paperwork done, so
+take note of the information about copyrights and copyright assignment.
+It can take quite a while to get all the paperwork done, so
 we encourage you to start that process as soon as you decide you are
 planning to work on something, or at least well ahead of when you
 think you will be ready to submit the patches.
@@ -638,6 +656,26 @@ testsuite `standalone', without it being part of the GDB source tree.
 
 See the DejaGNU documentation for further details.
 
+
+Copyright and License Notices
+=============================
+
+Most files maintained by the GDB Project contain a copyright notice
+as well as a license notice, usually at the start of the file.
+
+To reduce the length of copyright notices, consecutive years in the
+copyright notice can be combined into a single range.  For instance,
+the following list of copyright years...
+
+    1986, 1988, 1989, 1991-1993, 1999, 2000, 2007, 2008, 2009, 2010, 2011
+
+... is abbreviated into:
+
+    1986, 1988-1989, 1991-1993, 1999-2000, 2007-2011
+
+Every year of each range, inclusive, is a copyrightable year that
+could be listed individually.
+
 \f
 (this is for editing this file with GNU emacs)
 Local Variables: