Buildsystem: libc in src/modules/c dynamisch linken

+ libc: Zusätzlich zur statischen Bibliothek auch eine dynamische bauen

+ modules/c/*: Die libc dynamisch linken
Signed-off-by: Kevin Wolf <kevin@tyndur.org>

buildmk.sh

@@ -69,7 +69,11 @@ if [ -d lib ]; then
     if [ -f lib/crt0.c ]; then
         LIBDIRS="`pwd`/lib/crt0.o $LIBDIRS"
     fi
-    LIBDIRS="`pwd`/lib/library.a $LIBDIRS"
+    if (grep library.so lib/Makefile.all > /dev/null 2>&1); then
+        LIBDIRS="`pwd`/lib/library.so $LIBDIRS"
+    else
+        LIBDIRS="`pwd`/lib/library.a $LIBDIRS"
+    fi
 fi
 
 if [ -f "user-$LOST_ARCH.ld" ]; then
@@ -146,7 +150,12 @@ EOF
 fi
 
 if [ -f Makefile.all ]; then
-  echo -e \\tLOST_BUILDMK_ROOT="$LOST_BUILDMK_ROOT" LDSCRIPT="'$LDSCRIPT'" bash Makefile.all '$(BUILD_ROOT)' \'$LIBDIRS $LIB_GCC\' \'$LOST_BUILDMK_ROOT\' >> Makefile
+    if [ -z "$ENABLE_SHARED" ]; then
+        LOCAL_LIBDIRS="$(echo "$LIBDIRS" | sed -e 's/\.so/\.a/g')"
+    else
+        LOCAL_LIBDIRS="$LIBDIRS"
+    fi
+    echo -e \\tLOST_BUILDMK_ROOT="$LOST_BUILDMK_ROOT" LDSCRIPT="'$LDSCRIPT'" bash Makefile.all '$(BUILD_ROOT)' \'$LOCAL_LIBDIRS $LIB_GCC\' \'$LOST_BUILDMK_ROOT\' >> Makefile
 fi
 
 cat <<EOF >> Makefile
@@ -255,7 +264,7 @@ done
 cat <<EOF >> Makefile
 
 clean_objs:
-	rm -f *.o *.a *.mod *.ppu link.res ppas.sh `basename \`pwd\``
+	rm -f *.o *.a *.so *.mod *.ppu link.res ppas.sh `basename \`pwd\``
 
 softclean: clean_objs
 	for file in *; do if [ -f "\$\$file/Makefile" -a \( ! -f "\$\$file/.nobuild" -o -f "\$\$file/.ignorenobuild" \) ]; then \$(MAKE) -sC "\$\$file" softclean; fi done

src/modules/c/Makefile.conf

+export ENABLE_SHARED=1

src/modules/lib/Makefile.all

+shopt -s extglob
 echo "AR   library.a"
 source $LOST_BUILDMK_ROOT/config.sh
 
-$LOST_TOOLS_AR rs library.a *.o */*.o */*/*.o
+$LOST_TOOLS_AR rs library.a !(weak_stubs).o */*.o */*/*.o
+
+echo "LD   library.so"
+$LOST_TOOLS_LD -shared -soname=libc -olibrary.so *.o */*.o */*/*.o $LIB_GCC
+$LOST_TOOLS_STRIP -s library.so -o $1/system/libc.so

src/modules/lib/rpc/Makefile.all

-cp *.o ..

src/modules/lib/syscalls/Makefile.all

-cp *.o ..

src/modules/lib/weak_stubs.c

+/*
+ * Copyright (c) 2017 The tyndur Project. All rights reserved.
+ *
+ * This code is derived from software contributed to the tyndur Project
+ * by Kevin Wolf.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Diese Funktionen und Variablen sind dazu gedacht, vom Programm überladen
+ * zu werden. Wir definieren hier leere Stubs, um in Programmen, die die
+ * entsprechenden Funktionen nicht benutzen, Undefined References zu
+ * vermeiden. */
+
+asm(".global __start_tmslang\n"
+    "__start_tmslang:\n"
+    ".global __stop_tmslang\n"
+    "__stop_tmslang:\n");