--- gcc-git/gcc/doc/install.texi	2021-06-10 11:58:18.366986279 +0100
+++ gm2-floppsie/gcc/doc/install.texi	2021-06-17 17:22:04.645530103 +0100
@@ -1777,18 +1777,19 @@
 @smallexample
 grep ^language= */config-lang.in
 @end smallexample
-Currently, you can use any of the following:
-@code{all}, @code{default}, @code{ada}, @code{c}, @code{c++}, @code{d},
-@code{fortran}, @code{go}, @code{jit}, @code{lto}, @code{objc}, @code{obj-c++}.
-Building the Ada compiler has special requirements, see below.
-If you do not pass this flag, or specify the option @code{default}, then the
-default languages available in the @file{gcc} sub-tree will be configured.
-Ada, D, Go, Jit, and Objective-C++ are not default languages.  LTO is not a
-default language, but is built by default because @option{--enable-lto} is
-enabled by default.  The other languages are default languages.  If
-@code{all} is specified, then all available languages are built.  An
-exception is @code{jit} language, which requires
-@option{--enable-host-shared} to be included with @code{all}.
+Currently, you can use any of the following: @code{all},
+@code{default}, @code{ada}, @code{c}, @code{c++}, @code{d},
+@code{fortran}, @code{go}, @code{jit}, @code{lto}, @code{m2},
+@code{objc}, @code{obj-c++}.  Building the Ada compiler has special
+requirements, see below.  If you do not pass this flag, or specify the
+option @code{default}, then the default languages available in the
+@file{gcc} sub-tree will be configured.  Ada, D, Go, Jit,
+Objective-C++ and Modula-2 are not default languages.  LTO is not a
+default language, but is built by default because
+@option{--enable-lto} is enabled by default.  The other languages are
+default languages.  If @code{all} is specified, then all available
+languages are built.  An exception is @code{jit} language, which
+requires @option{--enable-host-shared} to be included with @code{all}.
 
 @item --enable-stage1-languages=@var{lang1},@var{lang2},@dots{}
 Specify that a particular subset of compilers and their runtime
@@ -1811,6 +1812,10 @@
 previous Ada build procedures, when it was required to explicitly
 do a @samp{make -C gcc gnatlib_and_tools}.
 
+@item --disable-libgm2
+Specify that the run-time libraries and tools used by Modula-2 should not
+be built.  This can be useful for debugging.
+
 @item --disable-libsanitizer
 Specify that the run-time libraries for the various sanitizers should
 not be built.
@@ -3070,10 +3075,10 @@
 In order to run sets of tests selectively, there are targets
 @samp{make check-gcc} and language specific @samp{make check-c},
 @samp{make check-c++}, @samp{make check-d} @samp{make check-fortran},
-@samp{make check-ada}, @samp{make check-objc}, @samp{make check-obj-c++},
-@samp{make check-lto}
-in the @file{gcc} subdirectory of the object directory.  You can also
-just run @samp{make check} in a subdirectory of the object directory.
+@samp{make check-ada}, @samp{make check-m2}, @samp{make check-objc},
+@samp{make check-obj-c++}, @samp{make check-lto} in the @file{gcc}
+subdirectory of the object directory.  You can also just run
+@samp{make check} in a subdirectory of the object directory.
 
 
 A more selective way to just run all @command{gcc} execute tests in the
