Switch gcc ftp URL's to https

The FTP protocol is getting long in the tooth, and we should emphasize
HTTPS where that is available. This patch changes various gcc.gnu.org
URL's to instead use HTTPS.

For instance, kernel.org shut down FTP access in 2017, with the
explanation:

- The protocol is inefficient and requires adding awkward kludges to
  firewalls and load-balancing daemons
- FTP servers have no support for caching or accelerators, which has
  significant performance impacts
- Most software implementations have stagnated and see infrequent
  updates

ChangeLog:

2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>

        * configure.ac: Use https for gcc.gnu.org.
        * configure: Regenerated.

gcc/ChangeLog:

2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>

        * configure.ac: Use https for gcc.gnu.org.
        * configure: Regenerated.
        * doc/install.texi: Use https for gcc.gnu.org.
        * doc/sourcebuild.texi: Likewise.

gcc/testsuite/ChangeLog:

2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>

        * README: Use https for gcc.gnu.org.

libstdc++-v3/ChangeLog:

2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>

        * doc/html/api.html: Use https for gcc.gnu.org.
        * doc/xml/api.xml: Likewise.

maintainer-scripts/ChangeLog:

2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>

        * gcc_release: Use https for gcc.gnu.org.

From-SVN: r278526

ChangeLog

+2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	* configure.ac: Use https for gcc.gnu.org.
+	* configure: Regenerated.
+
 2019-11-19  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* MAINTAINERS (aarch64 port): Remove my name, move to...

configure

@@ -5902,7 +5902,7 @@ rm -f core conftest.err conftest.$ac_objext \
 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
 their locations.  Source code for these libraries can be found at
 their respective hosting sites as well as at
-ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
+https://gcc.gnu.org/pub/gcc/infrastructure/.  See also
 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
 make sure that you have installed both the libraries and the header

configure.ac

@@ -1665,7 +1665,7 @@ if test -d ${srcdir}/gcc && test "x$have_gmp" = xno; then
 Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
 their locations.  Source code for these libraries can be found at
 their respective hosting sites as well as at
-ftp://gcc.gnu.org/pub/gcc/infrastructure/.  See also
+https://gcc.gnu.org/pub/gcc/infrastructure/.  See also
 http://gcc.gnu.org/install/prerequisites.html for additional info.  If
 you obtained GMP, MPFR and/or MPC from a vendor distribution package,
 make sure that you have installed both the libraries and the header

gcc/ChangeLog

+2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	* configure.ac: Use https for gcc.gnu.org
+	* configure: Regenerated.
+	* doc/install.texi: Use https for gcc.gnu.org.
+	* doc/sourcebuild.texi: Likewise.
+
 2019-11-20  Julian Brown  <julian@codesourcery.com>
 
 	* config/gcn/gcn.c (gcn_asm_output_symbol_ref): Handle null cfun.

gcc/configure

@@ -27134,7 +27134,7 @@ $as_echo "$gcc_cv_as_machine_directive" >&6; }
 
 	if test x$gcc_cv_as_machine_directive != xyes; then
 	  echo "*** This target requires an assembler supporting \".machine\"" >&2
-	  echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
+	  echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
 	  test x$build = x$target && exit 1
 	fi
         ;;

gcc/configure.ac

@@ -4748,7 +4748,7 @@ gd:
 	  [	.machine ppc7400])
 	if test x$gcc_cv_as_machine_directive != xyes; then
 	  echo "*** This target requires an assembler supporting \".machine\"" >&2
-	  echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
+	  echo you can get it from: https://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
 	  test x$build = x$target && exit 1
 	fi
         ;;

gcc/doc/install.texi

@@ -333,7 +333,7 @@ requirements.
 @itemx bzip2 version 1.0.2 (or later)
 
 Necessary to uncompress GCC @command{tar} files when source code is
-obtained via FTP mirror sites.
+obtained via HTTPS mirror sites.
 
 @item GNU make version 3.80 (or later)
 
@@ -411,7 +411,7 @@ download_prerequisites installs.
 @item isl Library version 0.15 or later.
 
 Necessary to build GCC with the Graphite loop optimizations.
-It can be downloaded from @uref{ftp://gcc.gnu.org/pub/gcc/infrastructure/}.
+It can be downloaded from @uref{https://gcc.gnu.org/pub/gcc/infrastructure/}.
 If an isl source distribution is found
 in a subdirectory of your GCC sources named @file{isl}, it will be
 built together with GCC.  Alternatively, the @option{--with-isl} configure
@@ -513,7 +513,7 @@ files in the directories below @file{jit/docs}.
 @itemx SSH (any version)
 
 Necessary to access the SVN repository.  Public releases and weekly
-snapshots of the development sources are also available via FTP@.
+snapshots of the development sources are also available via HTTPS@.
 
 @item GNU diffutils version 2.7 (or later)
 
@@ -547,9 +547,8 @@ own sources.
 @cindex Downloading GCC
 @cindex Downloading the Source
 
-GCC is distributed via @uref{http://gcc.gnu.org/svn.html,,SVN} and FTP
-tarballs compressed with @command{gzip} or
-@command{bzip2}.
+GCC is distributed via @uref{http://gcc.gnu.org/svn.html,,SVN} and via
+HTTPS as tarballs compressed with @command{gzip} or @command{bzip2}.
 
 Please refer to the @uref{http://gcc.gnu.org/releases.html,,releases web page}
 for information on how to obtain GCC@.

gcc/doc/sourcebuild.texi

@@ -566,8 +566,8 @@ and the online manuals should be linked to from
 @file{onlinedocs/index.html}.
 @item
 Any old releases or CVS repositories of the front end, before its
-inclusion in GCC, should be made available on the GCC FTP site
-@uref{ftp://gcc.gnu.org/pub/gcc/old-releases/}.
+inclusion in GCC, should be made available on the GCC web site at
+@uref{https://gcc.gnu.org/pub/gcc/old-releases/}.
 @item
 The release and snapshot script @file{maintainer-scripts/gcc_release}
 should be updated to generate appropriate tarballs for this front end.

gcc/testsuite/ChangeLog

+2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	* README: Use https for gcc.gnu.org.
+
 2019-11-20  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* gcc.target/aarch64/simd/vrbit_1.c: Add -fno-ipa-icf.
@@ -7,7 +11,7 @@
 	PR85678
 	* g++.dg/lto/odr-6_1.c: Add -fcommon.
 	* gcc.dg/alias-15.c: Likewise.
-	* gcc.dg/fdata-sections-1.c: Likewise.	
+	* gcc.dg/fdata-sections-1.c: Likewise.
 	* gcc.dg/ipa/pr77653.c: Likewise.
 	* gcc.dg/lto/20090729_0.c: Likewise.
 	* gcc.dg/lto/20111207-1_0.c: Likewise.

gcc/testsuite/README

@@ -3,7 +3,7 @@ the C testsuite, see README.gcc.
 
 The driver that runs this testsuite is called DejaGnu and you will
 need a current DejaGnu snapshot, which is available from
-ftp://gcc.gnu.org/pub/gcc/infrastructure, for example.
+https://gcc.gnu.org/pub/gcc/infrastructure, for example.
 
 These tests are included "as is". If any of them fails, do not report
 a bug.  Bug reports for DejaGnu can go to bug-dejagnu@gnu.org.

libstdc++-v3/ChangeLog

+2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	* doc/html/api.html: Use https for gcc.gnu.org.
+	* doc/xml/api.xml: Likewise.
+
 2019-11-19  Jonathan Wakely  <jwakely@redhat.com>
 
 	* include/bits/regex.h (ranges::__detail::__enable_view_impl): Fix

libstdc++-v3/doc/html/api.html

@@ -30,7 +30,7 @@
 </p><p>
   The rendered HTML, as above, is also available for download on the
   gcc.gnu.org site in a directory located at
-   <code class="literal">&lt;URL:ftp://gcc.gnu.org/pub/gcc/libstdc++/doxygen/&gt;</code>.
+   <code class="literal">&lt;URL:https://gcc.gnu.org/pub/gcc/libstdc++/doxygen/&gt;</code>.
    You will almost certainly need to use one of the
    <a class="link" href="http://gcc.gnu.org/mirrors.html" target="_top">mirror sites</a> to download
    the tarball. After unpacking, simply load libstdc++-html-*/index.html
@@ -38,4 +38,4 @@
 </p><p>
   In addition, a rendered set of man pages are available in the same
   location specified above. Start with C++Intro(3).
-</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
+</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
\ No newline at end of file

libstdc++-v3/doc/xml/api.xml

@@ -52,7 +52,7 @@
 <para>
   The rendered HTML, as above, is also available for download on the
   gcc.gnu.org site in a directory located at
-   <literal>&lt;URL:ftp://gcc.gnu.org/pub/gcc/libstdc++/doxygen/&gt;</literal>.
+   <literal>&lt;URL:https://gcc.gnu.org/pub/gcc/libstdc++/doxygen/&gt;</literal>.
    You will almost certainly need to use one of the
    <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://gcc.gnu.org/mirrors.html">mirror sites</link> to download
    the tarball. After unpacking, simply load libstdc++-html-*/index.html

maintainer-scripts/ChangeLog

+2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>
+
+	* gcc_release: Use https for gcc.gnu.org.
+
 2019-11-14  Richard Biener  <rguenther@suse.de>
 
 	* update_version_svn (IGNORE_BRANCHES): Add 7.

maintainer-scripts/gcc_release

@@ -430,7 +430,7 @@ announce_snapshot() {
   changedir "${SNAPSHOTS_DIR}"
   echo \
 "Snapshot gcc-"${RELEASE}" is now available on
-  ftp://gcc.gnu.org/pub/gcc/snapshots/"${RELEASE}"/
+  https://gcc.gnu.org/pub/gcc/snapshots/"${RELEASE}"/
 and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
 
 This snapshot has been generated from the GCC "${BRANCH}" SVN branch