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install.texi: Document MPC requirements, flags etc. 

* doc/install.texi: Document MPC requirements, flags etc.

From-SVN: r147592
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Kaveh R. Ghazi 2009-05-15 18:12:44 +00:00 committed by Kaveh Ghazi
parent c128599ae1
commit f9bab00712
2 changed files with 32 additions and 12 deletions
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@ -1,5 +1,7 @@
2009-05-15 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* doc/install.texi: Document MPC requirements, flags etc.
* builtins.c (do_mpc_arg1, fold_builtin_ccos): New.
(fold_builtin_cexp): Ensure we get a complex REAL_TYPE.
Evaluate constant arguments.

42
gcc/doc/install.texi
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@ -344,8 +344,19 @@ not installed in your default library search path.
Necessary to build libgcj, the GCJ runtime.
@end table
@item MPC Library version 0.6.0 (or later)
Optional when building GCC@. Having this library will enable
additional optimizations on complex numbers. It can be downloaded
from @uref{http://www.multiprecision.org/mpc/}. The
@option{--with-mpc} configure option should be used if your MPC
Library is not installed in your default library search path. See
also @option{--with-mpc-lib} and @option{--with-mpc-include}.
Alternatively, if an MPC source distribution is found in a
subdirectory of your GCC sources named @file{mpc}, it will be built
together with GCC@.
@end table
@heading Tools/packages necessary for modifying GCC
@table @asis
@ -525,11 +536,11 @@ components of the binutils you intend to build alongside the compiler
(@file{bfd}, @file{binutils}, @file{gas}, @file{gprof}, @file{ld},
@file{opcodes}, @dots{}) to the directory containing the GCC sources.
Likewise, the GMP and MPFR libraries can be automatically built together
with GCC. Unpack the GMP and/or MPFR source distributions in the
directory containing the GCC sources and rename their directories to
@file{gmp} and @file{mpfr}, respectively (or use symbolic links with the
same name).
Likewise the GMP, MPFR and MPC libraries can be automatically built
together with GCC. Unpack the GMP, MPFR and/or MPC source
distributions in the directory containing the GCC sources and rename
their directories to @file{gmp}, @file{mpfr} and @file{mpc},
respectively (or use symbolic links with the same name).
@html
<hr />
@ -1488,17 +1499,24 @@ When neither of these configure options are used, the default will be
@itemx --with-mpfr=@var{pathname}
@itemx --with-mpfr-include=@var{pathname}
@itemx --with-mpfr-lib=@var{pathname}
If you do not have GMP (the GNU Multiple Precision library) and the
MPFR Libraries installed in a standard location and you want to build
GCC, you can explicitly specify the directory where they are installed
(@samp{--with-gmp=@var{gmpinstalldir}},
@samp{--with-mpfr=@var{mpfrinstalldir}}). The
@itemx --with-mpc=@var{pathname}
@itemx --with-mpc-include=@var{pathname}
@itemx --with-mpc-lib=@var{pathname}
If you do not have GMP (the GNU Multiple Precision library), the MPFR
library and/or the MPC library installed in a standard location and
you want to build GCC, you can explicitly specify the directory where
they are installed (@samp{--with-gmp=@var{gmpinstalldir}},
@samp{--with-mpfr=@var{mpfrinstalldir}},
@samp{--with-mpc=@var{mpcinstalldir}}). The
@option{--with-gmp=@var{gmpinstalldir}} option is shorthand for
@option{--with-gmp-lib=@var{gmpinstalldir}/lib} and
@option{--with-gmp-include=@var{gmpinstalldir}/include}. Likewise the
@option{--with-mpfr=@var{mpfrinstalldir}} option is shorthand for
@option{--with-mpfr-lib=@var{mpfrinstalldir}/lib} and
@option{--with-mpfr-include=@var{mpfrinstalldir}/include}. If these
@option{--with-mpfr-include=@var{mpfrinstalldir}/include}, also the
@option{--with-mpc=@var{mpcinstalldir}} option is shorthand for
@option{--with-mpc-lib=@var{mpcinstalldir}/lib} and
@option{--with-mpc-include=@var{mpcinstalldir}/include}. If these
shorthand assumptions are not correct, you can use the explicit
include and lib options directly.