[patch] Fix PR38465: graphite libraries undocumented

["Sebastian Pop" <sebpop at gmail dot com>]

Hi,

The attached patch documents the build requirements for the Graphite
loop transformations.  I have a package cloog-ppl.tar.gz that should
be uploaded on ftp://gcc.gnu.org/pub/gcc/infrastructure/ is there
somebody who could do that for me?  Who should I contact otherwise?

Thanks,
Sebastian Pop
--
AMD - GNU Tools

	* doc/install.texi (Prerequisites): Document PPL and CLooG-PPL
	dependences and the configure options.

Index: install.texi
===================================================================
--- install.texi	(revision 142712)
+++ install.texi	(working copy)
@@ -327,6 +327,24 @@ Alternatively, if a MPFR source distribu
 of your GCC sources named @file{mpfr}, it will be built together with
 GCC@.
 
+@item Parma Polyhedral Library (PPL) version 0.10
+
+Necessary to build GCC with the Graphite loop optimizations.
+It can be downloaded from @uref{http://www.cs.unipr.it/ppl/Download/}.
+
+The @option{--with-ppl} configure option should be used if PPL is not
+installed in your default library search path.
+
+@item CLooG-PPL version 0.15
+
+Necessary to build GCC with the Graphite loop optimizations.  It can
+be downloaded from @uref{ftp://gcc.gnu.org/pub/gcc/infrastructure/}.
+The code in @file{cloog-ppl.tar.gz} comes from a branch of CLooG
+available from @uref{http://repo.or.cz/w/cloog-ppl.git}.  CLooG-PPL
+should be configured with @option{--with-ppl}.
+
+The @option{--with-cloog} configure option should be used if CLooG is
+not installed in your default library search path.
 
 @item @command{jar}, or InfoZIP (@command{zip} and @command{unzip})