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6fca4d9694
Add a few -Wunused-* diagnostic flags that look useful. Some are known to gcc, some to clang, some to both. Fix the fallouts. -Wunused-const-variable=1 is understood by gcc, but not clang. -Wunused-const-variable would be undertsood by both, but for gcc at least it would flag the unused const variables in headers. This doesn't make sense to me, because as soon as one source file includes a header but doesn't use a const variable defined in that header, it's an error. With `=1`, gcc only warns about unused const variable in the main source file. It's not a big deal that clang doesn't understand it though: any instance of that problem will be flagged by any gcc build. Change-Id: Ie20d99524b3054693f1ac5b53115bb46c89a5156 Approved-By: Tom Tromey <tom@tromey.com>
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.