diff -ruw /dev/null gcc-git-devel-modula2/libgm2/libm2min/Makefile.am
--- /dev/null	2022-08-24 16:22:16.888000070 +0100
+++ gcc-git-devel-modula2/libgm2/libm2min/Makefile.am	2022-12-06 02:56:51.432775922 +0000
@@ -0,0 +1,147 @@
+# Makefile for libm2min.
+#   Copyright 2013-2022  Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+SUFFIXES = .c .mod .def .o .obj .lo .a .la
+
+ACLOCAL_AMFLAGS = -I . -I .. -I ../config
+
+VPATH = . @srcdir@/../../gcc/m2/gm2-libs-min
+
+# Multilib support.
+MAKEOVERRIDES=
+
+version := $(shell $(CC) -dumpversion)
+
+# Directory in which the compiler finds libraries etc.
+libsubdir = $(libdir)/gcc/$(target_alias)/$(version)
+# Used to install the shared libgcc.
+slibdir = @slibdir@
+
+toolexeclibdir=@toolexeclibdir@
+toolexecdir=@toolexecdir@
+GM2_FOR_TARGET=@GM2_FOR_TARGET@
+
+MULTIDIR := $(shell $(CC) $(CFLAGS) -print-multi-directory)
+MULTIOSDIR := $(shell $(CC) $(CFLAGS) -print-multi-os-directory)
+
+MULTIOSSUBDIR := $(shell if test x$(MULTIOSDIR) != x.; then echo /$(MULTIOSDIR); fi)
+inst_libdir = $(libsubdir)$(MULTISUBDIR)
+inst_slibdir = $(slibdir)$(MULTIOSSUBDIR)
+
+
+# Work around what appears to be a GNU make bug handling MAKEFLAGS
+# values defined in terms of make variables, as is the case for CC and
+# friends when we are called from the top level Makefile.
+AM_MAKEFLAGS = \
+        "GCC_DIR=$(GCC_DIR)" \
+        "GM2_SRC=$(GM2_SRC)" \
+	"AR_FLAGS=$(AR_FLAGS)" \
+	"CC_FOR_BUILD=$(CC_FOR_BUILD)" \
+	"CC_FOR_TARGET=$(CC_FOR_TARGET)" \
+	"GM2_FOR_TARGET=$(GM2_FOR_TARGET)" \
+	"CFLAGS=$(CFLAGS)" \
+	"CXXFLAGS=$(CXXFLAGS)" \
+	"CFLAGS_FOR_BUILD=$(CFLAGS_FOR_BUILD)" \
+	"CFLAGS_FOR_TARGET=$(CFLAGS_FOR_TARGET)" \
+	"INSTALL=$(INSTALL)" \
+	"INSTALL_DATA=$(INSTALL_DATA)" \
+	"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
+	"INSTALL_SCRIPT=$(INSTALL_SCRIPT)" \
+	"LDFLAGS=$(LDFLAGS)" \
+	"LIBCFLAGS=$(LIBCFLAGS)" \
+	"LIBCFLAGS_FOR_TARGET=$(LIBCFLAGS_FOR_TARGET)" \
+	"MAKE=$(MAKE)" \
+	"MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" \
+        "MULTISUBDIR=$(MULTISUBDIR)" \
+        "MULTIOSDIR=$(MULTIOSDIR)" \
+        "MULTIBUILDTOP=$(MULTIBUILDTOP)" \
+        "MULTIFLAGS=$(MULTIFLAGS)" \
+	"PICFLAG=$(PICFLAG)" \
+	"PICFLAG_FOR_TARGET=$(PICFLAG_FOR_TARGET)" \
+	"SHELL=$(SHELL)" \
+	"RUNTESTFLAGS=$(RUNTESTFLAGS)" \
+	"exec_prefix=$(exec_prefix)" \
+	"infodir=$(infodir)" \
+	"libdir=$(libdir)" \
+	"includedir=$(includedir)" \
+	"prefix=$(prefix)" \
+	"tooldir=$(tooldir)" \
+	"AR=$(AR)" \
+	"AS=$(AS)" \
+	"LD=$(LD)" \
+	"RANLIB=$(RANLIB)" \
+	"NM=$(NM)" \
+	"NM_FOR_BUILD=$(NM_FOR_BUILD)" \
+	"NM_FOR_TARGET=$(NM_FOR_TARGET)" \
+	"DESTDIR=$(DESTDIR)" \
+	"WERROR=$(WERROR)" \
+        "TARGET_LIB_PATH_libgm2=$(TARGET_LIB_PATH_libgm2)"
+
+# Subdir rules rely on $(FLAGS_TO_PASS)
+FLAGS_TO_PASS = $(AM_MAKEFLAGS)
+
+M2DEFS = libc.def  M2RTS.def \
+         SYSTEM.def
+
+M2MODS = M2RTS.mod  SYSTEM.mod
+
+libm2mindir = libm2min
+toolexeclib_LTLIBRARIES = libm2min.la
+libm2min_la_SOURCES = $(M2MODS) libc.c
+libm2min_la_DEPENDENCIES = SYSTEM.def $(addsuffix .lo, $(basename $(libm2min_la_SOURCES)))
+libm2min_la_CFLAGS = -I. -I$(GM2_SRC)/gm2-libs-min -I$(GM2_SRC)/gm2-libs
+libm2min_la_M2FLAGS = -I. -I$(GM2_SRC)/gm2-libs-min -I$(GM2_SRC)/gm2-libs -fno-exceptions \
+   -fno-m2-plugin -fno-scaffold-dynamic -fno-scaffold-main
+libm2min_la_LINK = $(LINK) -version-info $(libtool_VERSION)
+BUILT_SOURCES = SYSTEM.def
+CLEANFILES = SYSTEM.def
+
+M2LIBDIR = /m2/m2min/
+
+.mod.lo:
+	$(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(GM2_FOR_TARGET) -c $(CFLAGS_FOR_TARGET) $(LIBCFLAGS) $(libm2min_la_M2FLAGS) $< -o $@
+
+libc.o: $(GM2_SRC)/gm2-libs-min/libc.c
+
+
+SYSTEM.def: Makefile
+	echo "CC = $(CC_FOR_BUILD)  CC_FOR_TARGET = $(CC_FOR_TARGET)  GM2 = $(GM2)  GM2_FOR_TARGET = $(GM2_FOR_TARGET) GM2_FOR_BUILD = $(GM2_FOR_BUILD)"
+	bash $(GM2_SRC)/tools-src/makeSystem -fpim \
+             $(GM2_SRC)/gm2-libs-min/SYSTEM.def \
+             $(GM2_SRC)/gm2-libs-min/SYSTEM.mod \
+             -I$(GM2_SRC)/gm2-libs-min:$(GM2_SRC)/gm2-libs \
+             "$(GM2_FOR_TARGET) -fno-exceptions" $@
+
+install-data-local: force
+	mkdir -p $(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)
+	$(INSTALL_DATA) .libs/libm2min.la $(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)
+	chmod 644 $(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)libm2min.la
+	$(INSTALL_DATA) .libs/libm2min.a $(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)
+	chmod 644 $(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)libm2min.a
+	$(RANLIB) $(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)libm2min.a
+	for i in $(M2DEFS) $(M2MODS) ; do \
+           if [ -f $$i ] ; then \
+              $(INSTALL_DATA) $$i '$(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)'; \
+           elif [ -f @srcdir@/../../gcc/m2/gm2-libs-min/$$i ] ; then \
+              $(INSTALL_DATA) @srcdir@/../../gcc/m2/gm2-libs-min/$$i '$(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)'; \
+           else \
+              echo "cannot find $$i" ; exit 1 ; \
+           fi ; \
+           chmod 644 $(DESTDIR)$(inst_libdir)/$(MULTIDIR)$(M2LIBDIR)$$i ; \
+	done
+
+force:
diff -ruw /dev/null gcc-git-devel-modula2/libgm2/libm2min/libc.c
--- /dev/null	2022-08-24 16:22:16.888000070 +0100
+++ gcc-git-devel-modula2/libgm2/libm2min/libc.c	2022-12-06 02:56:51.432775922 +0000
@@ -0,0 +1,43 @@
+/* libc.c provides minimal stubs for expected symbols used by the rts.
+
+Copyright (C) 2010-2022 Free Software Foundation, Inc.
+Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
+
+This file is part of GNU Modula-2.
+
+GNU Modula-2 is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GNU Modula-2 is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#if defined(HAVE_STDLIB_H)
+#include <stdlib.h>
+#endif
+
+void abort (void)
+{
+  /* you should add your system dependant code here.  */
+  __builtin_unreachable ();
+}
+
+void exit (int i)
+{
+  /* you should add your system dependant code here.  */
+  __builtin_unreachable ();
+}
