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Regenerate INSTALL.

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Carlos O'Donell
2015-01-20 22:25:38 -05:00
parent fe0e85afcb
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@@ -1,5 +1,7 @@
2015-01-20 Carlos O'Donell <carlos@redhat.com> 2015-01-20 Carlos O'Donell <carlos@redhat.com>
* INSTALL: Regenerated.
* po/libc.pot: Regenerated. * po/libc.pot: Regenerated.
2015-01-18 Chung-Lin Tang <cltang@codesourcery.com> 2015-01-18 Chung-Lin Tang <cltang@codesourcery.com>

449
INSTALL
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@@ -2,14 +2,13 @@ Installing the GNU C Library
**************************** ****************************
Before you do anything else, you should read the FAQ at Before you do anything else, you should read the FAQ at
`http://sourceware.org/glibc/wiki/FAQ'. It answers common questions <http://sourceware.org/glibc/wiki/FAQ>. It answers common questions and
and describes problems you may experience with compilation and describes problems you may experience with compilation and installation.
installation.
Features can be added to the GNU C Library via "add-on" bundles. These Features can be added to the GNU C Library via "add-on" bundles.
are separate tar files, which you unpack into the top level of the These are separate tar files, which you unpack into the top level of the
source tree. Then you give `configure' the `--enable-add-ons' option source tree. Then you give 'configure' the '--enable-add-ons' option to
to activate them, and they will be compiled into the library. activate them, and they will be compiled into the library.
You will need recent versions of several GNU tools: definitely GCC You will need recent versions of several GNU tools: definitely GCC
and GNU Make, and possibly others. *Note Tools for Compilation::, and GNU Make, and possibly others. *Note Tools for Compilation::,
@@ -20,12 +19,12 @@ Configuring and compiling the GNU C Library
The GNU C Library cannot be compiled in the source directory. You must The GNU C Library cannot be compiled in the source directory. You must
build it in a separate build directory. For example, if you have build it in a separate build directory. For example, if you have
unpacked the GNU C Library sources in `/src/gnu/glibc-VERSION', create unpacked the GNU C Library sources in '/src/gnu/glibc-VERSION', create a
a directory `/src/gnu/glibc-build' to put the object files in. This directory '/src/gnu/glibc-build' to put the object files in. This
allows removing the whole build directory in case an error occurs, allows removing the whole build directory in case an error occurs, which
which is the safest way to get a fresh start and should always be done. is the safest way to get a fresh start and should always be done.
From your object directory, run the shell script `configure' located From your object directory, run the shell script 'configure' located
at the top level of the source tree. In the scenario above, you'd type at the top level of the source tree. In the scenario above, you'd type
$ ../glibc-VERSION/configure ARGS... $ ../glibc-VERSION/configure ARGS...
@@ -34,292 +33,292 @@ at the top level of the source tree. In the scenario above, you'd type
directory, the compilation may need to create or modify files and directory, the compilation may need to create or modify files and
directories in the source directory. directories in the source directory.
`configure' takes many options, but the only one that is usually 'configure' takes many options, but the only one that is usually
mandatory is `--prefix'. This option tells `configure' where you want mandatory is '--prefix'. This option tells 'configure' where you want
the GNU C Library installed. This defaults to `/usr/local', but the the GNU C Library installed. This defaults to '/usr/local', but the
normal setting to install as the standard system library is normal setting to install as the standard system library is
`--prefix=/usr' for GNU/Linux systems and `--prefix=' (an empty prefix) '--prefix=/usr' for GNU/Linux systems and '--prefix=' (an empty prefix)
for GNU/Hurd systems. for GNU/Hurd systems.
It may also be useful to set the CC and CFLAGS variables in the It may also be useful to set the CC and CFLAGS variables in the
environment when running `configure'. CC selects the C compiler that environment when running 'configure'. CC selects the C compiler that
will be used, and CFLAGS sets optimization options for the compiler. will be used, and CFLAGS sets optimization options for the compiler.
The following list describes all of the available options for The following list describes all of the available options for
`configure': 'configure':
`--prefix=DIRECTORY' '--prefix=DIRECTORY'
Install machine-independent data files in subdirectories of Install machine-independent data files in subdirectories of
`DIRECTORY'. The default is to install in `/usr/local'. 'DIRECTORY'. The default is to install in '/usr/local'.
`--exec-prefix=DIRECTORY' '--exec-prefix=DIRECTORY'
Install the library and other machine-dependent files in Install the library and other machine-dependent files in
subdirectories of `DIRECTORY'. The default is to the `--prefix' subdirectories of 'DIRECTORY'. The default is to the '--prefix'
directory if that option is specified, or `/usr/local' otherwise. directory if that option is specified, or '/usr/local' otherwise.
`--with-headers=DIRECTORY' '--with-headers=DIRECTORY'
Look for kernel header files in DIRECTORY, not `/usr/include'. Look for kernel header files in DIRECTORY, not '/usr/include'. The
The GNU C Library needs information from the kernel's header files GNU C Library needs information from the kernel's header files
describing the interface to the kernel. The GNU C Library will describing the interface to the kernel. The GNU C Library will
normally look in `/usr/include' for them, but if you specify this normally look in '/usr/include' for them, but if you specify this
option, it will look in DIRECTORY instead. option, it will look in DIRECTORY instead.
This option is primarily of use on a system where the headers in This option is primarily of use on a system where the headers in
`/usr/include' come from an older version of the GNU C Library. '/usr/include' come from an older version of the GNU C Library.
Conflicts can occasionally happen in this case. You can also use Conflicts can occasionally happen in this case. You can also use
this option if you want to compile the GNU C Library with a newer this option if you want to compile the GNU C Library with a newer
set of kernel headers than the ones found in `/usr/include'. set of kernel headers than the ones found in '/usr/include'.
`--enable-add-ons[=LIST]' '--enable-add-ons[=LIST]'
Specify add-on packages to include in the build. If this option is Specify add-on packages to include in the build. If this option is
specified with no list, it enables all the add-on packages it specified with no list, it enables all the add-on packages it finds
finds in the main source directory; this is the default behavior. in the main source directory; this is the default behavior. You
You may specify an explicit list of add-ons to use in LIST, may specify an explicit list of add-ons to use in LIST, separated
separated by spaces or commas (if you use spaces, remember to by spaces or commas (if you use spaces, remember to quote them from
quote them from the shell). Each add-on in LIST can be an the shell). Each add-on in LIST can be an absolute directory name
absolute directory name or can be a directory name relative to the or can be a directory name relative to the main source directory,
main source directory, or relative to the build directory (that or relative to the build directory (that is, the current working
is, the current working directory). For example, directory). For example,
`--enable-add-ons=nptl,../glibc-libidn-VERSION'. '--enable-add-ons=nptl,../glibc-libidn-VERSION'.
`--enable-kernel=VERSION' '--enable-kernel=VERSION'
This option is currently only useful on GNU/Linux systems. The This option is currently only useful on GNU/Linux systems. The
VERSION parameter should have the form X.Y.Z and describes the VERSION parameter should have the form X.Y.Z and describes the
smallest version of the Linux kernel the generated library is smallest version of the Linux kernel the generated library is
expected to support. The higher the VERSION number is, the less expected to support. The higher the VERSION number is, the less
compatibility code is added, and the faster the code gets. compatibility code is added, and the faster the code gets.
`--with-binutils=DIRECTORY' '--with-binutils=DIRECTORY'
Use the binutils (assembler and linker) in `DIRECTORY', not the Use the binutils (assembler and linker) in 'DIRECTORY', not the
ones the C compiler would default to. You can use this option if ones the C compiler would default to. You can use this option if
the default binutils on your system cannot deal with all the the default binutils on your system cannot deal with all the
constructs in the GNU C Library. In that case, `configure' will constructs in the GNU C Library. In that case, 'configure' will
detect the problem and suppress these constructs, so that the detect the problem and suppress these constructs, so that the
library will still be usable, but functionality may be lost--for library will still be usable, but functionality may be lost--for
example, you can't build a shared libc with old binutils. example, you can't build a shared libc with old binutils.
`--without-fp' '--without-fp'
Use this option if your computer lacks hardware floating-point Use this option if your computer lacks hardware floating-point
support and your operating system does not emulate an FPU. support and your operating system does not emulate an FPU.
`--disable-shared' '--disable-shared'
Don't build shared libraries even if it is possible. Not all Don't build shared libraries even if it is possible. Not all
systems support shared libraries; you need ELF support and systems support shared libraries; you need ELF support and
(currently) the GNU linker. (currently) the GNU linker.
`--disable-profile' '--disable-profile'
Don't build libraries with profiling information. You may want to Don't build libraries with profiling information. You may want to
use this option if you don't plan to do profiling. use this option if you don't plan to do profiling.
`--enable-static-nss' '--enable-static-nss'
Compile static versions of the NSS (Name Service Switch) libraries. Compile static versions of the NSS (Name Service Switch) libraries.
This is not recommended because it defeats the purpose of NSS; a This is not recommended because it defeats the purpose of NSS; a
program linked statically with the NSS libraries cannot be program linked statically with the NSS libraries cannot be
dynamically reconfigured to use a different name database. dynamically reconfigured to use a different name database.
`--without-tls' '--without-tls'
By default the C library is built with support for thread-local By default the C library is built with support for thread-local
storage if the used tools support it. By using `--without-tls' storage if the used tools support it. By using '--without-tls'
this can be prevented though there generally is no reason since it this can be prevented though there generally is no reason since it
creates compatibility problems. creates compatibility problems.
`--enable-hardcoded-path-in-tests' '--enable-hardcoded-path-in-tests'
By default, dynamic tests are linked to run with the installed C By default, dynamic tests are linked to run with the installed C
library. This option hardcodes the newly built C library path in library. This option hardcodes the newly built C library path in
dynamic tests so that they can be invoked directly. dynamic tests so that they can be invoked directly.
`--enable-lock-elision=yes' '--enable-lock-elision=yes'
Enable lock elision for pthread mutexes by default. Enable lock elision for pthread mutexes by default.
`--enable-pt_chown' '--enable-pt_chown'
The file `pt_chown' is a helper binary for `grantpt' (*note The file 'pt_chown' is a helper binary for 'grantpt' (*note
Pseudo-Terminals: Allocation.) that is installed setuid root to Pseudo-Terminals: Allocation.) that is installed setuid root to fix
fix up pseudo-terminal ownership. It is not built by default up pseudo-terminal ownership. It is not built by default because
because systems using the Linux kernel are commonly built with the systems using the Linux kernel are commonly built with the 'devpts'
`devpts' filesystem enabled and mounted at `/dev/pts', which filesystem enabled and mounted at '/dev/pts', which manages
manages pseudo-terminal ownership automatically. By using pseudo-terminal ownership automatically. By using
`--enable-pt_chown', you may build `pt_chown' and install it '--enable-pt_chown', you may build 'pt_chown' and install it setuid
setuid and owned by `root'. The use of `pt_chown' introduces and owned by 'root'. The use of 'pt_chown' introduces additional
additional security risks to the system and you should enable it security risks to the system and you should enable it only if you
only if you understand and accept those risks. understand and accept those risks.
`--disable-werror' '--disable-werror'
By default, the GNU C Library is built with `-Werror'. If you wish By default, the GNU C Library is built with '-Werror'. If you wish
to build without this option (for example, if building with a newer to build without this option (for example, if building with a newer
version of GCC than this version of the GNU C Library was tested version of GCC than this version of the GNU C Library was tested
with, so new warnings cause the build with `-Werror' to fail), you with, so new warnings cause the build with '-Werror' to fail), you
can configure with `--disable-werror'. can configure with '--disable-werror'.
`--build=BUILD-SYSTEM' '--build=BUILD-SYSTEM'
`--host=HOST-SYSTEM' '--host=HOST-SYSTEM'
These options are for cross-compiling. If you specify both These options are for cross-compiling. If you specify both options
options and BUILD-SYSTEM is different from HOST-SYSTEM, `configure' and BUILD-SYSTEM is different from HOST-SYSTEM, 'configure' will
will prepare to cross-compile the GNU C Library from BUILD-SYSTEM prepare to cross-compile the GNU C Library from BUILD-SYSTEM to be
to be used on HOST-SYSTEM. You'll probably need the used on HOST-SYSTEM. You'll probably need the '--with-headers'
`--with-headers' option too, and you may have to override option too, and you may have to override CONFIGURE's selection of
CONFIGURE's selection of the compiler and/or binutils. the compiler and/or binutils.
If you only specify `--host', `configure' will prepare for a If you only specify '--host', 'configure' will prepare for a native
native compile but use what you specify instead of guessing what compile but use what you specify instead of guessing what your
your system is. This is most useful to change the CPU submodel. system is. This is most useful to change the CPU submodel. For
For example, if `configure' guesses your machine as example, if 'configure' guesses your machine as 'i686-pc-linux-gnu'
`i686-pc-linux-gnu' but you want to compile a library for 586es, but you want to compile a library for 586es, give
give `--host=i586-pc-linux-gnu' or just `--host=i586-linux' and add '--host=i586-pc-linux-gnu' or just '--host=i586-linux' and add the
the appropriate compiler flags (`-mcpu=i586' will do the trick) to appropriate compiler flags ('-mcpu=i586' will do the trick) to
CFLAGS. CFLAGS.
If you specify just `--build', `configure' will get confused. If you specify just '--build', 'configure' will get confused.
`--with-pkgversion=VERSION' '--with-pkgversion=VERSION'
Specify a description, possibly including a build number or build Specify a description, possibly including a build number or build
date, of the binaries being built, to be included in `--version' date, of the binaries being built, to be included in '--version'
output from programs installed with the GNU C Library. For output from programs installed with the GNU C Library. For
example, `--with-pkgversion='FooBar GNU/Linux glibc build 123''. example, '--with-pkgversion='FooBar GNU/Linux glibc build 123''.
The default value is `GNU libc'. The default value is 'GNU libc'.
`--with-bugurl=URL' '--with-bugurl=URL'
Specify the URL that users should visit if they wish to report a Specify the URL that users should visit if they wish to report a
bug, to be included in `--help' output from programs installed with bug, to be included in '--help' output from programs installed with
the GNU C Library. The default value refers to the main the GNU C Library. The default value refers to the main
bug-reporting information for the GNU C Library. bug-reporting information for the GNU C Library.
To build the library and related programs, type `make'. This will To build the library and related programs, type 'make'. This will
produce a lot of output, some of which may look like errors from `make' produce a lot of output, some of which may look like errors from 'make'
but isn't. Look for error messages from `make' containing `***'. but isn't. Look for error messages from 'make' containing '***'. Those
Those indicate that something is seriously wrong. indicate that something is seriously wrong.
The compilation process can take a long time, depending on the The compilation process can take a long time, depending on the
configuration and the speed of your machine. Some complex modules may configuration and the speed of your machine. Some complex modules may
take a very long time to compile, as much as several minutes on slower take a very long time to compile, as much as several minutes on slower
machines. Do not panic if the compiler appears to hang. machines. Do not panic if the compiler appears to hang.
If you want to run a parallel make, simply pass the `-j' option with If you want to run a parallel make, simply pass the '-j' option with
an appropriate numeric parameter to `make'. You need a recent GNU an appropriate numeric parameter to 'make'. You need a recent GNU
`make' version, though. 'make' version, though.
To build and run test programs which exercise some of the library To build and run test programs which exercise some of the library
facilities, type `make check'. If it does not complete successfully, facilities, type 'make check'. If it does not complete successfully, do
do not use the built library, and report a bug after verifying that the not use the built library, and report a bug after verifying that the
problem is not already known. *Note Reporting Bugs::, for instructions problem is not already known. *Note Reporting Bugs::, for instructions
on reporting bugs. Note that some of the tests assume they are not on reporting bugs. Note that some of the tests assume they are not
being run by `root'. We recommend you compile and test the GNU C being run by 'root'. We recommend you compile and test the GNU C
Library as an unprivileged user. Library as an unprivileged user.
Before reporting bugs make sure there is no problem with your system. Before reporting bugs make sure there is no problem with your system.
The tests (and later installation) use some pre-existing files of the The tests (and later installation) use some pre-existing files of the
system such as `/etc/passwd', `/etc/nsswitch.conf' and others. These system such as '/etc/passwd', '/etc/nsswitch.conf' and others. These
files must all contain correct and sensible content. files must all contain correct and sensible content.
Normally, `make check' will run all the tests before reporting all Normally, 'make check' will run all the tests before reporting all
problems found and exiting with error status if any problems occurred. problems found and exiting with error status if any problems occurred.
You can specify `stop-on-test-failure=y' when running `make check' to You can specify 'stop-on-test-failure=y' when running 'make check' to
make the test run stop and exit with an error status immediately when a make the test run stop and exit with an error status immediately when a
failure occurs. failure occurs.
To format the `GNU C Library Reference Manual' for printing, type To format the 'GNU C Library Reference Manual' for printing, type
`make dvi'. You need a working TeX installation to do this. The 'make dvi'. You need a working TeX installation to do this. The
distribution builds the on-line formatted version of the manual, as distribution builds the on-line formatted version of the manual, as Info
Info files, as part of the build process. You can build them manually files, as part of the build process. You can build them manually with
with `make info'. 'make info'.
The library has a number of special-purpose configuration parameters The library has a number of special-purpose configuration parameters
which you can find in `Makeconfig'. These can be overwritten with the which you can find in 'Makeconfig'. These can be overwritten with the
file `configparms'. To change them, create a `configparms' in your file 'configparms'. To change them, create a 'configparms' in your
build directory and add values as appropriate for your system. The build directory and add values as appropriate for your system. The file
file is included and parsed by `make' and has to follow the conventions is included and parsed by 'make' and has to follow the conventions for
for makefiles. makefiles.
It is easy to configure the GNU C Library for cross-compilation by It is easy to configure the GNU C Library for cross-compilation by
setting a few variables in `configparms'. Set `CC' to the setting a few variables in 'configparms'. Set 'CC' to the
cross-compiler for the target you configured the library for; it is cross-compiler for the target you configured the library for; it is
important to use this same `CC' value when running `configure', like important to use this same 'CC' value when running 'configure', like
this: `CC=TARGET-gcc configure TARGET'. Set `BUILD_CC' to the compiler this: 'CC=TARGET-gcc configure TARGET'. Set 'BUILD_CC' to the compiler
to use for programs run on the build system as part of compiling the to use for programs run on the build system as part of compiling the
library. You may need to set `AR' to cross-compiling versions of `ar' library. You may need to set 'AR' to cross-compiling versions of 'ar'
if the native tools are not configured to work with object files for if the native tools are not configured to work with object files for the
the target you configured for. When cross-compiling the GNU C Library, target you configured for. When cross-compiling the GNU C Library, it
it may be tested using `make check may be tested using 'make check
test-wrapper="SRCDIR/scripts/cross-test-ssh.sh HOSTNAME"', where SRCDIR test-wrapper="SRCDIR/scripts/cross-test-ssh.sh HOSTNAME"', where SRCDIR
is the absolute directory name for the main source directory and is the absolute directory name for the main source directory and
HOSTNAME is the host name of a system that can run the newly built HOSTNAME is the host name of a system that can run the newly built
binaries of the GNU C Library. The source and build directories must binaries of the GNU C Library. The source and build directories must be
be visible at the same locations on both the build system and HOSTNAME. visible at the same locations on both the build system and HOSTNAME.
In general, when testing the GNU C Library, `test-wrapper' may be set In general, when testing the GNU C Library, 'test-wrapper' may be set
to the name and arguments of any program to run newly built binaries. to the name and arguments of any program to run newly built binaries.
This program must preserve the arguments to the binary being run, its This program must preserve the arguments to the binary being run, its
working directory and the standard input, output and error file working directory and the standard input, output and error file
descriptors. If `TEST-WRAPPER env' will not work to run a program with descriptors. If 'TEST-WRAPPER env' will not work to run a program with
environment variables set, then `test-wrapper-env' must be set to a environment variables set, then 'test-wrapper-env' must be set to a
program that runs a newly built program with environment variable program that runs a newly built program with environment variable
assignments in effect, those assignments being specified as `VAR=VALUE' assignments in effect, those assignments being specified as 'VAR=VALUE'
before the name of the program to be run. If multiple assignments to before the name of the program to be run. If multiple assignments to
the same variable are specified, the last assignment specified must the same variable are specified, the last assignment specified must take
take precedence. precedence.
Installing the C Library Installing the C Library
======================== ========================
To install the library and its header files, and the Info files of the To install the library and its header files, and the Info files of the
manual, type `make install'. This will build things, if necessary, manual, type 'make install'. This will build things, if necessary,
before installing them; however, you should still compile everything before installing them; however, you should still compile everything
first. If you are installing the GNU C Library as your primary C first. If you are installing the GNU C Library as your primary C
library, we recommend that you shut the system down to single-user mode library, we recommend that you shut the system down to single-user mode
first, and reboot afterward. This minimizes the risk of breaking first, and reboot afterward. This minimizes the risk of breaking things
things when the library changes out from underneath. when the library changes out from underneath.
`make install' will do the entire job of upgrading from a previous 'make install' will do the entire job of upgrading from a previous
installation of the GNU C Library version 2.x. There may sometimes be installation of the GNU C Library version 2.x. There may sometimes be
headers left behind from the previous installation, but those are headers left behind from the previous installation, but those are
generally harmless. If you want to avoid leaving headers behind you generally harmless. If you want to avoid leaving headers behind you can
can do things in the following order. do things in the following order.
You must first build the library (`make'), optionally check it You must first build the library ('make'), optionally check it ('make
(`make check'), switch the include directories and then install (`make check'), switch the include directories and then install ('make
install'). The steps must be done in this order. Not moving the install'). The steps must be done in this order. Not moving the
directory before install will result in an unusable mixture of header directory before install will result in an unusable mixture of header
files from both libraries, but configuring, building, and checking the files from both libraries, but configuring, building, and checking the
library requires the ability to compile and run programs against the old library requires the ability to compile and run programs against the old
library. The new `/usr/include', after switching the include library. The new '/usr/include', after switching the include
directories and before installing the library should contain the Linux directories and before installing the library should contain the Linux
headers, but nothing else. If you do this, you will need to restore headers, but nothing else. If you do this, you will need to restore any
any headers from libraries other than the GNU C Library yourself after headers from libraries other than the GNU C Library yourself after
installing the library. installing the library.
You can install the GNU C Library somewhere other than where you You can install the GNU C Library somewhere other than where you
configured it to go by setting the `install_root' variable on the configured it to go by setting the 'install_root' variable on the
command line for `make install'. The value of this variable is command line for 'make install'. The value of this variable is
prepended to all the paths for installation. This is useful when prepended to all the paths for installation. This is useful when
setting up a chroot environment or preparing a binary distribution. setting up a chroot environment or preparing a binary distribution. The
The directory should be specified with an absolute file name. directory should be specified with an absolute file name.
The GNU C Library includes a daemon called `nscd', which you may or The GNU C Library includes a daemon called 'nscd', which you may or
may not want to run. `nscd' caches name service lookups; it can may not want to run. 'nscd' caches name service lookups; it can
dramatically improve performance with NIS+, and may help with DNS as dramatically improve performance with NIS+, and may help with DNS as
well. well.
One auxiliary program, `/usr/libexec/pt_chown', is installed setuid One auxiliary program, '/usr/libexec/pt_chown', is installed setuid
`root' if the `--enable-pt_chown' configuration option is used. This 'root' if the '--enable-pt_chown' configuration option is used. This
program is invoked by the `grantpt' function; it sets the permissions program is invoked by the 'grantpt' function; it sets the permissions on
on a pseudoterminal so it can be used by the calling process. If you a pseudoterminal so it can be used by the calling process. If you are
are using a Linux kernel with the `devpts' filesystem enabled and using a Linux kernel with the 'devpts' filesystem enabled and mounted at
mounted at `/dev/pts', you don't need this program. '/dev/pts', you don't need this program.
After installation you might want to configure the timezone and After installation you might want to configure the timezone and
locale installation of your system. The GNU C Library comes with a locale installation of your system. The GNU C Library comes with a
locale database which gets configured with `localedef'. For example, to locale database which gets configured with 'localedef'. For example, to
set up a German locale with name `de_DE', simply issue the command set up a German locale with name 'de_DE', simply issue the command
`localedef -i de_DE -f ISO-8859-1 de_DE'. To configure all locales 'localedef -i de_DE -f ISO-8859-1 de_DE'. To configure all locales that
that are supported by the GNU C Library, you can issue from your build are supported by the GNU C Library, you can issue from your build
directory the command `make localedata/install-locales'. directory the command 'make localedata/install-locales'.
To configure the locally used timezone, set the `TZ' environment To configure the locally used timezone, set the 'TZ' environment
variable. The script `tzselect' helps you to select the right value. variable. The script 'tzselect' helps you to select the right value.
As an example, for Germany, `tzselect' would tell you to use As an example, for Germany, 'tzselect' would tell you to use
`TZ='Europe/Berlin''. For a system wide installation (the given paths 'TZ='Europe/Berlin''. For a system wide installation (the given paths
are for an installation with `--prefix=/usr'), link the timezone file are for an installation with '--prefix=/usr'), link the timezone file
which is in `/usr/share/zoneinfo' to the file `/etc/localtime'. For which is in '/usr/share/zoneinfo' to the file '/etc/localtime'. For
Germany, you might execute `ln -s /usr/share/zoneinfo/Europe/Berlin Germany, you might execute 'ln -s /usr/share/zoneinfo/Europe/Berlin
/etc/localtime'. /etc/localtime'.
Recommended Tools for Compilation Recommended Tools for Compilation
@@ -328,12 +327,12 @@ Recommended Tools for Compilation
We recommend installing the following GNU tools before attempting to We recommend installing the following GNU tools before attempting to
build the GNU C Library: build the GNU C Library:
* GNU `make' 3.79 or newer * GNU 'make' 3.79 or newer
You need the latest version of GNU `make'. Modifying the GNU C You need the latest version of GNU 'make'. Modifying the GNU C
Library to work with other `make' programs would be so difficult Library to work with other 'make' programs would be so difficult
that we recommend you port GNU `make' instead. *Really.* We that we recommend you port GNU 'make' instead. *Really.* We
recommend GNU `make' version 3.79. All earlier versions have recommend GNU 'make' version 3.79. All earlier versions have
severe bugs or lack features. severe bugs or lack features.
* GCC 4.6 or newer * GCC 4.6 or newer
@@ -350,53 +349,52 @@ build the GNU C Library:
Check the FAQ for any special compiler issues on particular Check the FAQ for any special compiler issues on particular
platforms. platforms.
* GNU `binutils' 2.22 or later * GNU 'binutils' 2.22 or later
You must use GNU `binutils' (as and ld) to build the GNU C Library. You must use GNU 'binutils' (as and ld) to build the GNU C Library.
No other assembler or linker has the necessary functionality at the No other assembler or linker has the necessary functionality at the
moment. moment.
* GNU `texinfo' 4.7 or later * GNU 'texinfo' 4.7 or later
To correctly translate and install the Texinfo documentation you To correctly translate and install the Texinfo documentation you
need this version of the `texinfo' package. Earlier versions do need this version of the 'texinfo' package. Earlier versions do
not understand all the tags used in the document, and the not understand all the tags used in the document, and the
installation mechanism for the info files is not present or works installation mechanism for the info files is not present or works
differently. differently.
* GNU `awk' 3.1.2, or higher * GNU 'awk' 3.1.2, or higher
`awk' is used in several places to generate files. Some `gawk' 'awk' is used in several places to generate files. Some 'gawk'
extensions are used, including the `asorti' function, which was extensions are used, including the 'asorti' function, which was
introduced in version 3.1.2 of `gawk'. introduced in version 3.1.2 of 'gawk'.
* Perl 5 * Perl 5
Perl is not required, but it is used if present to test the Perl is not required, but it is used if present to test the
installation. We may decide to use it elsewhere in the future. installation. We may decide to use it elsewhere in the future.
* GNU `sed' 3.02 or newer * GNU 'sed' 3.02 or newer
`Sed' is used in several places to generate files. Most scripts 'Sed' is used in several places to generate files. Most scripts
work with any version of `sed'. The known exception is the script work with any version of 'sed'. The known exception is the script
`po2test.sed' in the `intl' subdirectory which is used to generate 'po2test.sed' in the 'intl' subdirectory which is used to generate
`msgs.h' for the test suite. This script works correctly only 'msgs.h' for the test suite. This script works correctly only with
with GNU `sed' 3.02. If you like to run the test suite, you GNU 'sed' 3.02. If you like to run the test suite, you should
should definitely upgrade `sed'. definitely upgrade 'sed'.
If you change any of the 'configure.ac' files you will also need
If you change any of the `configure.ac' files you will also need * GNU 'autoconf' 2.69 (exactly)
* GNU `autoconf' 2.69 (exactly)
and if you change any of the message translation files you will need and if you change any of the message translation files you will need
* GNU `gettext' 0.10.36 or later * GNU 'gettext' 0.10.36 or later
If you wish to regenerate the `yacc' parser code in the `intl' If you wish to regenerate the 'yacc' parser code in the 'intl'
subdirectory you will need subdirectory you will need
* GNU `bison' 2.7 or later * GNU 'bison' 2.7 or later
You may also need these packages if you upgrade your source tree using You may also need these packages if you upgrade your source tree using
patches, although we try to avoid this. patches, although we try to avoid this.
@@ -406,41 +404,40 @@ Specific advice for GNU/Linux systems
If you are installing the GNU C Library on GNU/Linux systems, you need If you are installing the GNU C Library on GNU/Linux systems, you need
to have the header files from a 2.6.32 or newer kernel around for to have the header files from a 2.6.32 or newer kernel around for
reference. These headers must be installed using `make reference. These headers must be installed using 'make
headers_install'; the headers present in the kernel source directory headers_install'; the headers present in the kernel source directory are
are not suitable for direct use by the GNU C Library. You do not need not suitable for direct use by the GNU C Library. You do not need to
to use that kernel, just have its headers installed where the GNU C use that kernel, just have its headers installed where the GNU C Library
Library can access them, referred to here as INSTALL-DIRECTORY. The can access them, referred to here as INSTALL-DIRECTORY. The easiest way
easiest way to do this is to unpack it in a directory such as to do this is to unpack it in a directory such as
`/usr/src/linux-VERSION'. In that directory, run `make headers_install '/usr/src/linux-VERSION'. In that directory, run 'make headers_install
INSTALL_HDR_PATH=INSTALL-DIRECTORY'. Finally, configure the GNU C INSTALL_HDR_PATH=INSTALL-DIRECTORY'. Finally, configure the GNU C
Library with the option `--with-headers=INSTALL-DIRECTORY/include'. Library with the option '--with-headers=INSTALL-DIRECTORY/include'. Use
Use the most recent kernel you can get your hands on. (If you are the most recent kernel you can get your hands on. (If you are
cross-compiling the GNU C Library, you need to specify cross-compiling the GNU C Library, you need to specify
`ARCH=ARCHITECTURE' in the `make headers_install' command, where 'ARCH=ARCHITECTURE' in the 'make headers_install' command, where
ARCHITECTURE is the architecture name used by the Linux kernel, such as ARCHITECTURE is the architecture name used by the Linux kernel, such as
`x86' or `powerpc'.) 'x86' or 'powerpc'.)
After installing the GNU C Library, you may need to remove or rename After installing the GNU C Library, you may need to remove or rename
directories such as `/usr/include/linux' and `/usr/include/asm', and directories such as '/usr/include/linux' and '/usr/include/asm', and
replace them with copies of directories such as `linux' and `asm' from replace them with copies of directories such as 'linux' and 'asm' from
`INSTALL-DIRECTORY/include'. All directories present in 'INSTALL-DIRECTORY/include'. All directories present in
`INSTALL-DIRECTORY/include' should be copied, except that the GNU C 'INSTALL-DIRECTORY/include' should be copied, except that the GNU C
Library provides its own version of `/usr/include/scsi'; the files Library provides its own version of '/usr/include/scsi'; the files
provided by the kernel should be copied without replacing those provided by the kernel should be copied without replacing those provided
provided by the GNU C Library. The `linux', `asm' and `asm-generic' by the GNU C Library. The 'linux', 'asm' and 'asm-generic' directories
directories are required to compile programs using the GNU C Library; are required to compile programs using the GNU C Library; the other
the other directories describe interfaces to the kernel but are not directories describe interfaces to the kernel but are not required if
required if not compiling programs using those interfaces. You do not not compiling programs using those interfaces. You do not need to copy
need to copy kernel headers if you did not specify an alternate kernel kernel headers if you did not specify an alternate kernel header source
header source using `--with-headers'. using '--with-headers'.
The Filesystem Hierarchy Standard for GNU/Linux systems expects some The Filesystem Hierarchy Standard for GNU/Linux systems expects some
components of the GNU C Library installation to be in `/lib' and some components of the GNU C Library installation to be in '/lib' and some in
in `/usr/lib'. This is handled automatically if you configure the GNU '/usr/lib'. This is handled automatically if you configure the GNU C
C Library with `--prefix=/usr'. If you set some other prefix or allow Library with '--prefix=/usr'. If you set some other prefix or allow it
it to default to `/usr/local', then all the components are installed to default to '/usr/local', then all the components are installed there.
there.
Reporting Bugs Reporting Bugs
============== ==============
@@ -451,20 +448,20 @@ fixed. If you don't, no one will ever know about them and they will
remain unfixed for all eternity, if not longer. remain unfixed for all eternity, if not longer.
It is a good idea to verify that the problem has not already been It is a good idea to verify that the problem has not already been
reported. Bugs are documented in two places: The file `BUGS' describes reported. Bugs are documented in two places: The file 'BUGS' describes
a number of well known bugs and the central GNU C Library bug tracking a number of well known bugs and the central GNU C Library bug tracking
system has a WWW interface at `http://sourceware.org/bugzilla/'. The system has a WWW interface at <http://sourceware.org/bugzilla/>. The
WWW interface gives you access to open and closed reports. A closed WWW interface gives you access to open and closed reports. A closed
report normally includes a patch or a hint on solving the problem. report normally includes a patch or a hint on solving the problem.
To report a bug, first you must find it. With any luck, this will To report a bug, first you must find it. With any luck, this will be
be the hard part. Once you've found a bug, make sure it's really a the hard part. Once you've found a bug, make sure it's really a bug. A
bug. A good way to do this is to see if the GNU C Library behaves the good way to do this is to see if the GNU C Library behaves the same way
same way some other C library does. If so, probably you are wrong and some other C library does. If so, probably you are wrong and the
the libraries are right (but not necessarily). If not, one of the libraries are right (but not necessarily). If not, one of the libraries
libraries is probably wrong. It might not be the GNU C Library. Many is probably wrong. It might not be the GNU C Library. Many historical
historical Unix C libraries permit things that we don't, such as Unix C libraries permit things that we don't, such as closing a file
closing a file twice. twice.
If you think you have found some way in which the GNU C Library does If you think you have found some way in which the GNU C Library does
not conform to the ISO and POSIX standards (*note Standards and not conform to the ISO and POSIX standards (*note Standards and
@@ -476,7 +473,7 @@ library, you really only need to narrow it down to one library function
call, if possible. This should not be too difficult. call, if possible. This should not be too difficult.
The final step when you have a simple test case is to report the bug. The final step when you have a simple test case is to report the bug.
Do this at `http://www.gnu.org/software/libc/bugs.html'. Do this at <http://www.gnu.org/software/libc/bugs.html>.
If you are not sure how a function should behave, and this manual If you are not sure how a function should behave, and this manual
doesn't tell you, that's a bug in the manual. Report that too! If the doesn't tell you, that's a bug in the manual. Report that too! If the