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      ISO C++

      Prerequisites

  Because libstdc++ is part of GCC, the primary source for

   installation instructions is

   the GCC install page.

   In particular, list of prerequisite software needed to build the library

   starts with those requirements. The same pages also list

   the tools you will need if you wish to modify the source.

   Additional data is given here only where it applies to libstdc++.

   As of GCC 4.0.1 the minimum version of binutils required to build

      libstdc++ is 2.15.90.0.1.1. You can get snapshots

      (as well as releases) of binutils from

      ftp://sources.redhat.com/pub/binutils.

      Older releases of libstdc++ do not require such a recent version,

      but to take full advantage of useful space-saving features and

      bug-fixes you should use a recent binutils whenever possible.

      The configure process will automatically detect and use these

      features if the underlying support is present.

   Finally, a few system-specific requirements:

        linux

          If gcc 3.1.0 or later on is being used on linux, an attempt

          will be made to use "C" library functionality necessary for

          C++ named locale support.  For gcc 3.2.1 and later, this

          means that glibc 2.2.5 or later is required and the "C"

          library de_DE locale information must be installed.

          Note however that the sanity checks involving the de_DE

          locale are skipped when an explicit --enable-clocale=gnu

          configure option is used: only the basic checks are carried

          out, defending against misconfigurations.

          If the 'gnu' locale model is being used, the following

          locales are used and tested in the libstdc++ testsuites.

          The first column is the name of the locale, the second is

          the character set it is expected to use.

de_DE               ISO-8859-1

de_DE@euro          ISO-8859-15

en_GB               ISO-8859-1

en_HK               ISO-8859-1

en_PH               ISO-8859-1

en_US               ISO-8859-1

en_US.ISO-8859-1    ISO-8859-1

en_US.ISO-8859-15   ISO-8859-15

en_US.UTF-8         UTF-8

es_ES               ISO-8859-1

es_MX               ISO-8859-1

fr_FR               ISO-8859-1

fr_FR@euro          ISO-8859-15

is_IS               UTF-8

it_IT               ISO-8859-1

ja_JP.eucjp         EUC-JP

ru_RU.ISO-8859-5    ISO-8859-5

ru_RU.UTF-8         UTF-8

se_NO.UTF-8         UTF-8

ta_IN               UTF-8

zh_TW               BIG5

      Failure to have the underlying "C" library locale

      information installed will mean that C++ named locales for the

      above regions will not work: because of this, the libstdc++

      testsuite will skip the named locale tests. If this isn't an

      issue, don't worry about it. If named locales are needed, the

      underlying locale information must be installed. Note that

      rebuilding libstdc++ after the "C" locales are installed is not

      necessary.

        To install support for locales, do only one of the following:

          install all locales

              with RedHat Linux:

                export LC_ALL=C 

                rpm -e glibc-common --nodeps 

                 rpm -i --define "_install_langs all"

                 glibc-common-2.2.5-34.i386.rpm

               Instructions for other operating systems solicited.

          install just the necessary locales

              with Debian Linux:

               Add the above list, as shown, to the file

              /etc/locale.gen 

               run /usr/sbin/locale-gen 

              on most Unix-like operating systems:

               localedef -i de_DE -f ISO-8859-1 de_DE 

              (repeat for each entry in the above list) 

               Instructions for other operating systems solicited.