Add mes and mescc-tools-extra

mescc-tools-extra contains two important tools:
- cp
- chmod

mes first builds itself from a mes 0.21 seed as used by guix, and then
builds a mes 0.22 and then mes 0.22 using that created mes 0.22.

It does /not/ use bootstrap.sh as we don't have a proper shell at this
point, it has been manually adapted for kaem.

sysa/mes-0.22/build-aux/build.sh.in

@@ -0,0 +1,141 @@
+#! /bin/sh
+
+# GNU Mes --- Maxwell Equations of Software
+# Copyright © 2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+#
+# This file is part of GNU Mes.
+#
+# GNU Mes 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.
+#
+# GNU Mes 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 GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
+
+set -e
+
+if test "$1" = "help"; then
+    cat <<EOF
+Run:
+  ./build.sh      to build mes
+  ./check.sh      to check mes
+  ./install.sh    to install mes
+EOF
+    exit 0
+fi
+
+if test "$V" = 2; then
+    set -x
+fi
+
+set -u
+. ./config.sh
+. ${srcdest}build-aux/cflags.sh
+
+if $courageous; then
+    echo "Applying courage"
+    set +e
+fi
+
+if test "$compiler" != bootstrap; then
+    ${SHELL} ${srcdest}build-aux/build-scaffold.sh
+fi
+
+if test -n "$GUILE" -a "$GUILE" != true; then
+    ${SHELL} ${srcdest}build-aux/build-guile.sh
+fi
+
+(
+    mkdir -p gcc-lib
+    cp config.sh gcc-lib
+    cd gcc-lib
+    if test -z "$srcdest"; then
+        srcdest=../
+        srcdir=../
+    fi
+    if test $compiler = gcc; then
+        AM_LDFLAGS="$AM_LDFLAGS
+-L gcc-lib
+"
+        AM_CPPFLAGS="
+-D HAVE_CONFIG_H=1
+-I ${srcdest}lib
+-I include
+-I ${srcdest}include
+-I ${srcdest}include/$mes_kernel/$mes_cpu
+"
+        if test $mes_kernel = gnu; then
+            AM_CPPFLAGS="$AM_CPPFLAGS
+-I /usr/include
+"
+        fi
+
+        ${SHELL} ${srcdest}build-aux/build-lib.sh
+        cp crt1.o ..
+    fi
+    compiler=gcc ${SHELL} ${srcdest}build-aux/build-source-lib.sh
+)
+
+
+(
+    if test $compiler = gcc; then
+        AM_LDFLAGS="$AM_LDFLAGS
+-L gcc-lib
+"
+    fi
+
+    AM_CPPFLAGS="
+-D HAVE_CONFIG_H=1
+-I ${srcdest}lib
+-I include
+-I ${srcdest}include
+-I ${srcdest}include/$mes_kernel/$mes_cpu
+"
+    if test $compiler = gcc; then
+        ${SHELL} ${srcdest}build-aux/build-mes.sh
+    fi
+)
+
+(
+    mkdir -p mescc-lib
+    cp config.sh mescc-lib
+    cd mescc-lib
+    sed -i s,mes_libc=system,mes_libc=mes, config.sh
+    mkdir -p include/mes
+    cp ../include/mes/config.h include/mes/config.h
+    sed -i 's,#define SYSTEM_LIBC 1,#undef SYSTEM_LIBC,' include/mes/config.h
+    if test -z "$srcdest"; then
+        srcdest=../
+        srcdir=../
+    fi
+    ln -sf ${srcdest}mes .
+    ln -sf ${srcdest}module .
+    ln -sf ${srcdest}src .
+    AM_CPPFLAGS="
+-D HAVE_CONFIG_H=1
+-I ${srcdest}lib
+-I include
+-I ${srcdest}include
+-I ${srcdest}include/$mes_kernel/$mes_cpu
+"
+    compiler=mescc
+    AR=${MESAR-"${srcdest}pre-inst-env mesar"}
+    CC=${MESCC-"${srcdest}pre-inst-env mescc -m $mes_bits"}
+    # No user overrides for MesCC, they are probably intended for GCC
+    CFLAGS=
+    CPPFLAGS=
+    LDFLAGS=
+    ${SHELL} ${srcdest}build-aux/build-lib.sh
+    ${SHELL} ${srcdest}build-aux/build-source-lib.sh
+    if $bootstrap; then
+        ${SHELL} ${srcdest}build-aux/build-mes.sh
+        cp -f bin/mes-mescc ../bin
+        cp -f bin/mes ../bin
+    fi
+)