    Copyright (C) INRIA 2003, 2005, 2007, 2008, 2009, 2010, 2011, 2012, 2014, 2015, 2018, 2020

    Copying and distribution of this file, with or without modification,
    are permitted in any medium without royalty provided the copyright
    notice and this notice are preserved. This file is offered as-is,
    without any warranty.

    GNU MPC is a complex floating-point library with exact rounding.
    It is based on the GNU MPFR floating-point library (http://www.mpfr.org/),
    which is itself based on the GNU MP library (http://gmplib.org/).

                            Installing GNU MPC
                            ==================

    This is for the impatient, for deeper explanations see the chapter
    "Installing GNU MPC" in the Texinfo documentation (type 'info mpc.info').

    0. You first need to install GMP, the GNU Multiprecision Arithmetic Library,
       see <http://gmplib.org/>, and GNU MPFR, see <http://www.mpfr.org>.
       GNU MPC requires GMP version 5.0.0 or later
       and GNU MPFR version 4.1.0 or later.

    1. In the directory of the GNU MPC archive, type

          tar xzf mpc-1.2.1.tar.gz
          cd mpc-1.2.1
          ./configure
          make

       This assumes that GMP and GNU MPFR are installed in a directory searched
       by default by the compiler. Otherwise, use --with-gmp=DIR or
       --with-mpfr=DIR with ./configure (see the Texinfo documentation).

    2. You should run the test suite, type

          make check

       If any error occurs, please report it on the mailing list
       <mpc-discuss@lists.gforge.inria.fr>, or file a bug at the bug tracker
       <https://gforge.inria.fr/tracker/?atid=607&group_id=131&func=browse> .

    3. To install the GNU MPC library, type

          make install

       By default, the files are copied into subdirectories of /usr/local.
       You need write permissions on these directories, or pass an alternative
       installation directory using the --prefix option to ./configure.

    4. You can optionally create documentation, type

          make dvi

       or

          make ps

       This requires the Texinfo package (version 4.2 at least).

    In case of difficulties, please send a description of the problem to
    <mpc-discuss@lists.gforge.inria.fr>.

    ##############################################################################

    Known problems:
    ===============

    When LD_LIBRARY_PATH is set to various paths, it might confuse the configure
    script, even with --with-gmp and --with-mpfr options. Then try to unset
    LD_LIBRARY_PATH.

    ##############################################################################

    Note for AIX users:
    ===================

    If GMP was built with the 64-bit ABI, before building and testing GNU MPC,
    it might be necessary to set the OBJECT_MODE environment variable to 64
    by, e.g.,
       export OBJECT_MODE=64
    This has been tested with the C compiler IBM XL C/C++ Enterprise Edition
    V8.0 for AIX, version: 08.00.0000.0021, GMP 4.2.4 and GNU MPFR 2.4.1.

    ##############################################################################

    Note for Windows users:
    =======================

    There is a special file Makefile.vc for Windows, contributed by Mickaël
    Gastineau. This file works both for the Windows Server 2003 R2 Platform SDK,
    and for the Windows SDK of Vista. To use it, simply replace "make" by
    "nmake /f makefile.vc" in the above instructions:

    compilation :
    nmake /f makefile.vc GMP=<gmp_install_dir> MPFR=<mpfr_install_dir>

    clean :
    nmake /f makefile.vc GMP=<gmp_install_dir> MPFR=<mpfr_install_dir> clean

    check :
    nmake /f makefile.vc GMP=<gmp_install_dir> MPFR=<mpfr_install_dir> check

    If you want to compile mpc with mingw in the msys shell, you might need to
    add the following to the configure command (or in your environment):

    LDFLAGS=-L/usr/local/lib CPPFLAGS=-I/usr/local/include

    In addition, you might need to give the following additional argument to
    configure (reported for mpc-0.9):

    CPP="x86_64-w64-mingw32-gcc -E"

    (reported by Sisyphus)