given with no list, it enables all the add-on packages it finds.
If you do not wish to use some add-on package that you have
present in your source tree, give this option a list of the
- add-ons that you *do* want used, like this:
+ add-ons that you _do_ want used, like this:
`--enable-add-ons=crypt,linuxthreads'
`--with-binutils=DIRECTORY'
compile but use what you say instead of guessing what your system
is. This is most useful to change the CPU submodel. For example,
if configure guesses your machine as `i586-pc-linux-gnu' but you
- want to compile a library optimized for 386es, give
+ want to compile a library for 386es, give
`--host=i386-pc-linux-gnu' or just `--host=i386-linux' and add the
appropriate compiler flags (`-mcpu=i386' will do the trick) to
- CFLAGS. (A library compiled for a Pentium (`i586') will still work
- on a 386, but it may be slower.)
+ CFLAGS.
If you give just `--build', configure will get confused.
Perl is not required, but it is used if present to test the
installation. We may decide to use it elsewhere in the future.
+
If you change any of the `configure.in' files you will also need
* GNU `autoconf' 2.12 or higher
maintainers by sending electronic mail to <bug-glibc@gnu.org>.
Each case of `iX86' can be `i386', `i486', `i586', or `i686'. All
-of those configurations produce a library that can run on any of these
-processors if the compiler is configured correctly. The GCC compiler
-by default generates code that's optimized for the machine it's
-configured for and will use the instructions available on that machine.
-For example if your GCC is configured for `i686', gcc will optimize
-for `i686' and might issue some `i686' specific instructions. To
-generate code for other models you should give GCC the appropriate
+of those configurations produce a library that can run on this
+processor and newer processors. The GCC compiler by default generates
+code that's optimized for the machine it's configured for and will use
+the instructions available on that machine. For example if your GCC is
+configured for `i686', gcc will optimize for `i686' and might issue
+some `i686' specific instructions. To generate code for other models,
+you have to configure for that model and give GCC the appropriate
`-march=' and `-mcpu=' compiler switches via CFLAGS.
Specific advice for Linux systems
library on your system against the new library for the sake of new code,
but keep the old libraries around for old binaries to use. This is
complicated and difficult. Consult the Glibc2 HOWTO at
-`http://www.imaxx.net/~thrytis/glibc' for details.
+<http://www.imaxx.net/~thrytis/glibc> for details.
You cannot use `nscd' with 2.0 kernels, due to bugs in the
kernel-side thread support. `nscd' happens to hit these bugs
It is a good idea to check first that the problem was not reported
before. Bugs are documented in two places: The file `BUGS' describes a
number of well known bugs and the bug tracking system has a WWW
-interface at `http://www-gnats.gnu.org:8080/cgi-bin/wwwgnats.pl'. The
+interface at <http://www-gnats.gnu.org:8080/cgi-bin/wwwgnats.pl>. The
WWW interface gives you access to open and closed reports. The closed
reports normally include a patch or a hint on solving the problem.