I made a similar change to the web pages earlier today; this is
the complementary one for the installation documentation.
Applied.
Gerald
2018-09-01 Gerald Pfeifer <ger...@pfeifer.com>
* doc/install.texi (Prerequisites): Adjust link mpfr.org.
Index: doc/install.texi
===================================================================
--- doc/install.texi (revision 264027)
+++ doc/install.texi (working copy)
@@ -366,7 +366,7 @@
@item MPFR Library version 2.4.2 (or later)
Necessary to build GCC@. It can be downloaded from
-@uref{http://www.mpfr.org/}. If an MPFR source distribution is found
+@uref{https://www.mpfr.org}. If an MPFR source distribution is found
in a subdirectory of your GCC sources named @file{mpfr}, it will be
built together with GCC. Alternatively, if MPFR is already installed
but it is not in your default library search path, the
