rtbuf/rtbuf

diff --git a/.gitignore b/.gitignore
index c5e35f7..a12f5a3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+*.a
 /cli/rtbuf
 config.mk
 /doc/
diff --git a/config.subr b/config.subr
index 0b8f7db..bdd1e51 100644
--- a/config.subr
+++ b/config.subr
@@ -1,11 +1,11 @@
 #!/bin/sh
 ## rtbuf
-## Copyright 2018-2022 kmx.io <contact@kmx.io>
+## Copyright 2018-2023 kmx.io <contact@kmx.io>
 ##
-## Permission is hereby granted to use this software granted
-## the above copyright notice and this permission paragraph
-## are included in all copies and substantial portions of this
-## software.
+## Permission is hereby granted to use this software excepted
+## on Apple computers granted the above copyright notice and
+## this permission paragraph are included in all copies and
+## substantial portions of this software.
 ##
 ## THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
 ## PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
@@ -14,13 +14,19 @@
 
 set -e
 
+echo "$(basename "$PWD")/$(basename "$0")"
+
 o_rule() {
     "$CC" $CPPFLAGS $CFLAGS -M "$1" || { echo "$1" | sed -e 's/^\(.*\)\.c$/\1.o: \1.c/'; }
     echo "$1" | sed -e 's/^\(.*\)\.c$/\1.o: Makefile config.mk/'
 }
 
+ext_rule() {
+    o_rule "$2" | sed -e "s/[.]o:/$1:/"
+}
+
 lo_rule() {
-    o_rule "$1" | sed -e 's/[.]o:/.lo:/'
+    ext_rule .lo "$1"
 }
 
 prog_rule() {
@@ -31,16 +37,95 @@ c2prog() {
     echo "$@" | sed -e 's/[.]c$//' -e 's/[.]c / /g'
 }
 
+c2ext() {
+    EXT="$1"; shift
+    echo "$@" | sed -e "s/[.]c$/${EXT}/" -e "s/[.]c /${EXT} /g"
+}
+
 c2o() {
-    echo "$@" | sed -e 's/[.]c$/.o/' -e 's/[.]c /.o /g'
+    c2ext .o "$@"
 }
 
 c2lo() {
-    echo "$@" | sed -e 's/[.]c$/.lo/' -e 's/[.]c /.lo /g'
+    c2ext .lo "$@"
 }
 
 c2la() {
-    echo "$@" | sed -e 's/[.]c$/.la/' -e 's/[.]c /.la /g'
+    c2ext .la "$@"
+}
+
+config_asan() {
+    echo "int main() { return 0; }" > .config_asan.c
+    if $CC $CFLAGS .config_asan.c $LDFLAGS -lasan -o /dev/null 2>/dev/null; then
+        HAVE_ASAN=true
+    else
+        HAVE_ASAN=false
+    fi
+    rm .config_asan.c
+}
+
+config_glfw3() {
+    if pkg-config glfw3; then
+        CFLAGS="$CFLAGS $(pkg-config --cflags glfw3)"
+        LIBS="$LIBS $(pkg-config --libs glfw3)"
+        HAVE_GLFW3=Yes
+    else
+        HAVE_GLFW3=No
+    fi
+    echo "Checking library glfw3: $HAVE_GLFW3" >&2
+    echo "HAVE_GLFW3 = $HAVE_GLFW3" >> ${CONFIG_MK}
+}
+
+config_gnu() {
+    if grep -q _GNU_SOURCE /usr/include/features.h 2>/dev/null; then
+	CFLAGS="$CFLAGS -D_GNU_SOURCE"
+    fi
+}
+
+config_libbsd() {
+    if pkg-config libbsd-overlay; then
+	HAVE_LIBBSD=Yes
+    else
+	HAVE_LIBBSD=No
+    fi
+}
+
+config_portaudio() {
+    if pkg-config portaudio-2.0; then
+	CFLAGS="$CFLAGS $(pkg-config --cflags portaudio-2.0)"
+	LIBS="$LIBS $(pkg-config --libs portaudio-2.0)"
+        HAVE_PORTAUDIO=Yes
+    else
+        HAVE_PORTAUDIO=No
+    fi
+    echo "Checking library portaudio: $HAVE_PORTAUDIO" >&2
+    echo "HAVE_PORTAUDIO = $HAVE_PORTAUDIO" >> ${CONFIG_MK}
+}
+
+config_sndio() {
+    if pkg-config sndio; then
+	CFLAGS="$CFLAGS $(pkg-config --cflags sndio)"
+	LIBS="$LIBS $(pkg-config --libs sndio)"
+        HAVE_SNDIO=Yes
+    else
+	OLD_LIBS="$LIBS"
+	LIBS="$LIBS -lsndio"
+	if "${CC}" ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} "${SRCDIR}/lib/sndio/check_sndio.c" ${LIBS} -o /dev/null; then
+	    HAVE_SNDIO=Yes
+	else
+	    LIBS="${OLD_LIBS}"
+            HAVE_SNDIO=No
+	fi
+    fi
+    echo "Checking library sndio: $HAVE_SNDIO" >&2
+    echo "HAVE_SNDIO = $HAVE_SNDIO" >> ${CONFIG_MK}
+}
+
+pkg_config() {
+    if pkg-config "$1"; then
+	CFLAGS="$CFLAGS $(pkg-config --cflags "$1")"
+	LIBS="$LIBS $(pkg-config --libs "$1")"
+    fi
 }
 
 require_pkg_config() {
@@ -53,20 +138,44 @@ require_pkg_config() {
 update_config_mk() {
     if ! cmp "${CONFIG_MK}" config.mk >/dev/null 2>&1; then
         mv "${CONFIG_MK}" config.mk
-        echo "$PWD/config.mk"
+        echo "-> $(basename "$PWD")/config.mk"
     else
         rm "${CONFIG_MK}"
     fi
 }
 
+update_sources_mk() {
+    if ! cmp "${SOURCES_MK}" sources.mk >/dev/null 2>&1; then
+        mv "${SOURCES_MK}" sources.mk
+        echo "-> $(basename "$PWD")/sources.mk"
+    else
+        rm "${SOURCES_MK}"
+    fi
+}
+
+update_sources_sh() {
+    if ! cmp "${SOURCES_SH}" sources.sh >/dev/null 2>&1; then
+        mv "${SOURCES_SH}" sources.sh
+        echo "-> $(basename "$PWD")/sources.sh"
+    else
+        rm "${SOURCES_SH}"
+    fi
+}
+
 CONFIG_MK=config.mk
 CONFIG_MK=".config.mk.tmp"
 echo "# config.mk generated by configure" > ${CONFIG_MK}
 
+SOURCES_MK=sources.mk
+SOURCES_MK=".sources.mk.tmp"
+SOURCES_SH=sources.sh
+SOURCES_SH=".sources.sh.tmp"
+
 VER=0.4
 echo "VER = $VER" >> ${CONFIG_MK}
+echo "SRC_TOP = $SRC_TOP" >> ${CONFIG_MK}
 
-if test -z "$CC"; then
+if [ "x$CC" = "x" ]; then
     if test -n $(which cc); then
         CC=cc
     elif test -n $(which gcc); then
@@ -75,7 +184,31 @@ if test -z "$CC"; then
 fi
 echo "CC = $CC" >> ${CONFIG_MK}
 
-if test -z "$LIBTOOL"; then
+if [ "x$GCOV" = "x" ]; then
+    if which gcov >/dev/null 2>&1; then
+	GCOV=gcov
+        HAVE_GCOV=true
+    elif which egcov >/dev/null 2>&1; then
+	GCOV=egcov
+        HAVE_GCOV=true
+    fi
+    HAVE_GCOV=false
+else
+    HAVE_GCOV=true
+fi
+echo "HAVE_GCOV = $HAVE_GCOV" >> ${CONFIG_MK}
+if ${HAVE_GCOV}; then
+    echo "GCOV = $GCOV" >> ${CONFIG_MK}
+fi
+
+if [ "x$INSTALL" = "x" ]; then
+    if test -x "$(which install)"; then
+        INSTALL=install
+    fi
+fi
+echo "INSTALL = $INSTALL" >> ${CONFIG_MK}
+
+if [ "x$LIBTOOL" = "x" ]; then
     if test -x "$(which glibtool 2>/dev/null)"; then
         LIBTOOL="$(which glibtool)"
     elif test -x "/usr/local/bin/libtool"; then
@@ -88,37 +221,30 @@ if test -z "$LIBTOOL"; then
 fi
 echo "LIBTOOL = $LIBTOOL" >> ${CONFIG_MK}
 
-if test -z "$INSTALL"; then
-    if test -x "$(which install)"; then
-        INSTALL=install
-    fi
-fi
-echo "INSTALL = $INSTALL" >> ${CONFIG_MK}
-
 PREFIX="${PREFIX:-/usr/local}"
 echo "PREFIX = $PREFIX" >> ${CONFIG_MK}
 
-if test -z "$OWNER"; then
-    OWNER="$(ls -ld "$PREFIX/" | tr -s ' ' | cut -d ' ' -f 3)"
+if [ "x$OWNER" = "x" ]; then
+    OWNER="$(ls -ld "$PREFIX" | tr -s ' ' | cut -d ' ' -f 3)"
 fi
 echo "OWNER = $OWNER" >> ${CONFIG_MK}
 
-if test -z "$GROUP"; then
-    GROUP="$(ls -ld "$PREFIX/" | tr -s ' ' | cut -d ' ' -f 4)"
+if [ "x$GROUP" = "x" ]; then
+    GROUP="$(ls -ld "$PREFIX" | tr -s ' ' | cut -d ' ' -f 4)"
 fi
 echo "GROUP = $GROUP" >> ${CONFIG_MK}
 
-if test -z "$BINDIR"; then
+if [ "x$BINDIR" = "x" ]; then
     BINDIR=${PREFIX}/bin
 fi
 echo "BINDIR = $BINDIR" >> ${CONFIG_MK}
 
-if test -z "$LIBDIR"; then
+if [ "x$LIBDIR" = "x" ]; then
     LIBDIR=${PREFIX}/lib
 fi
 echo "LIBDIR = $LIBDIR" >> ${CONFIG_MK}
 
-if test -z "$RTBUF_LIBDIR"; then
+if [ "x$RTBUF_LIBDIR" = "x" ]; then
     RTBUF_LIBDIR=${LIBDIR}/rtbuf/${VER}
 fi
 echo "RTBUF_LIBDIR = $RTBUF_LIBDIR" >> ${CONFIG_MK}
@@ -153,63 +279,6 @@ rtbuf_library() {
     done
 }
 
-check_glfw3() {
-    LOG=.lib.glfw3.config.log
-    OLD_CFLAGS=$CFLAGS
-    OLD_LIBS=$LIBS
-    CFLAGS="$CFLAGS $(pkg-config --cflags glfw3)"
-    LIBS="$LIBS $(pkg-config --libs glfw3)"
-    echo "$CC" $CPPFLAGS $CFLAGS "${LIB_SRCDIR}/glfw3/config.c" -o /dev/null ${LDFLAGS} ${LIBS} > $LOG
-    if   "$CC" $CPPFLAGS $CFLAGS "${LIB_SRCDIR}/glfw3/config.c" -o /dev/null ${LDFLAGS} ${LIBS} >> $LOG 2>&1; then
-        HAVE_GLFW3=Yes
-    else
-        HAVE_GLFW3=No
-        CFLAGS=$OLD_CFLAGS
-        LIBS=$OLD_LIBS
-    fi
-    echo "Checking library glfw3: $HAVE_GLFW3" >&2
-    echo "HAVE_GLFW3 = $HAVE_GLFW3" >> ${CONFIG_MK}
-}
-
-check_libbsd() {
-    if pkg-config libbsd-overlay; then
-	HAVE_LIBBSD=Yes
-    else
-	HAVE_LIBBSD=No
-    fi
-}
-
-check_portaudio() {
-    if pkg-config portaudio-2.0; then
-	CFLAGS="$CFLAGS $(pkg-config --cflags portaudio-2.0)"
-	LIBS="$LIBS $(pkg-config --libs portaudio-2.0)"
-        HAVE_PORTAUDIO=Yes
-    else
-        HAVE_PORTAUDIO=No
-    fi
-    echo "Checking library portaudio: $HAVE_PORTAUDIO" >&2
-    echo "HAVE_PORTAUDIO = $HAVE_PORTAUDIO" >> ${CONFIG_MK}
-}
-
-check_sndio() {
-    if pkg-config sndio; then
-	CFLAGS="$CFLAGS $(pkg-config --cflags sndio)"
-	LIBS="$LIBS $(pkg-config --libs sndio)"
-        HAVE_SNDIO=Yes
-    else
-	OLD_LIBS="$LIBS"
-	LIBS="$LIBS -lsndio"
-	if "${CC}" ${CPPFLAGS} ${CFLAGS} ${LDFLAGS} "${SRCDIR}/lib/sndio/check_sndio.c" ${LIBS} -o /dev/null; then
-	    HAVE_SNDIO=Yes
-	else
-	    LIBS="${OLD_LIBS}"
-            HAVE_SNDIO=No
-	fi
-    fi
-    echo "Checking library sndio: $HAVE_SNDIO" >&2
-    echo "HAVE_SNDIO = $HAVE_SNDIO" >> ${CONFIG_MK}
-}
-
 type_prog() {
     TYPE_SRC="$1_type.c"
     TYPE_PROG="$(c2prog "$TYPE_SRC")"
diff --git a/configure b/configure
index 6e03c0b..9eecde1 100755
--- a/configure
+++ b/configure
@@ -13,7 +13,7 @@
 ## THIS SOFTWARE.
 set -e
 
-export SRCDIR="$PWD"
+export RTBUF_SRC_TOP="$(pwd)/.."
 
 PREFIX="${PREFIX:-/usr/local}"
 if [ "x$1" = "x--prefix" ]; then
diff --git a/librtbuf/Makefile b/librtbuf/Makefile
index ada4a2d..94549f1 100644
--- a/librtbuf/Makefile
+++ b/librtbuf/Makefile
@@ -10,11 +10,50 @@
 ## PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
 ## AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
 ## THIS SOFTWARE.
-all: librtbuf.la
+CLEANFILES = *.a *.gcno *.la librtbuf.la .libs *.lo *.o
+
+CLEANFILES_COV = *.css *.gcda *.html .libs/*.gcda
+CLEANFILES += ${CLEANFILES_COV}
+
+DISTCLEANFILES = ${CLEANFILES} config.mk
+
+build: librtbuf.la librtbuf.a
+
+all:
+	${MAKE} build
+	if ${HAVE_GCOV}; then ${MAKE} cov; fi
+	${MAKE} debug
+	if ${HAVE_ASAN}; then ${MAKE} asan; fi
+
+asan: librtbuf.asan.la librtbuf.asan.a
 
 clean:
-	rm -rf .libs *.o *.lo *.la *.gcno *.gcna
+	rm -rf ${CLEANFILES}
+
+clean_cov:
+	rm -rf ${CLEANFILES_COV}
+
+cov: librtbuf.cov.la librtbuf.cov.a
+
+debug: librtbuf.debug.la librtbuf.debug.a
+
+distclean:
+	rm -rf ${DISTCLEANFILES}
+
+gcovr:
+	gcovr --gcov-executable ${GCOV} --html-details librtbuf.html
+
+librtbuf.a: librtbuf.la
+	cp .libs/librtbuf.a ./
+
+librtbuf.asan.a: librtbuf.asan.la
+	cp .libs/librtbuf.asan.a ./
+
+librtbuf.cov.a: librtbuf.cov.la
+	cp .libs/librtbuf.cov.a ./
 
-.PHONY: all clean
+librtbuf.debug.a: librtbuf.debug.la
+	cp .libs/librtbuf.debug.a ./
 
 include config.mk
+include sources.mk
diff --git a/librtbuf/configure b/librtbuf/configure
index 0489a5b..7761bda 100755
--- a/librtbuf/configure
+++ b/librtbuf/configure
@@ -13,59 +13,121 @@
 ## THIS SOFTWARE.
 set -e
 
+export RTBUF_SRC_TOP="$(pwd)/.."
+
 . ../config.subr
 
 LIB=librtbuf.la
+LIB_ASAN=librtbuf.asan.la
+LIB_COV=librtbuf.cov.la
+LIB_DEBUG=librtbuf.debug.la
 
-SOURCES="$(ls *.c | tr '\n' ' ')"
-echo "SOURCES = $SOURCES" >> ${CONFIG_MK}
+. ./sources.sh
 
-OBJECTS="$(c2lo "$SOURCES")"
+OBJECTS="$(c2ext .main.lo "$LO_SOURCES")"
 echo "OBJECTS = $OBJECTS" >> ${CONFIG_MK}
+OBJECTS_ASAN="$(c2ext .asan.lo "$LO_SOURCES")"
+OBJECTS_COV="$(c2ext .cov.lo "$LO_SOURCES")"
+OBJECTS_DEBUG="$(c2ext .debug.lo "$LO_SOURCES")"
 
-check_libbsd
+# Default config
+CPPFLAGS="${CPPFLAGS:=}"
+ENV_CFLAGS="${CFLAGS:=}"
+DEFAULT_CFLAGS="-O2 -pipe -fPIC"
+LDFLAGS="${LDFLAGS:=}"
+LIBS="${LIBS:=-lm}"
 
+# Common config for all targets
+CFLAGS="$CFLAGS -W -Wall -Werror -std=c99 -pedantic"
 CPPFLAGS="$CPPFLAGS -DRTBUF_LIBDIR=\\\"${RTBUF_LIBDIR}\\\""
 CPPFLAGS="$CPPFLAGS -DVER=\\\"${VER}\\\""
-if pkg-config libbsd-overlay; then
-    CPPFLAGS="$CPPFLAGS -D_DEFAULT_SOURCE -D__USE_MISC"
-fi
-echo "CPPFLAGS = $CPPFLAGS" >> ${CONFIG_MK}
+config_asan
+config_gnu
+pkg_config libbsd-overlay
+pkg_config libffi
+pkg_config libmd
 
-if [ x"$DEBUG" = x"yes" ]; then
-    CFLAGS="$CFLAGS -DDEBUG -O0 -ggdb"
-else
-    CFLAGS="$CFLAGS -DNDEBUG -O3"
-fi
-CFLAGS="$CFLAGS -W -Wall -Werror -std=c89 -pedantic"
-if pkg-config libbsd-overlay; then
-    CFLAGS="$CFLAGS $(pkg-config --cflags libbsd-overlay)"
-fi
-echo "CFLAGS = $CFLAGS" >> ${CONFIG_MK}
+# Address Sanitizer config
+CFLAGS_ASAN="$CFLAGS -fsanitize=address -O1 -fno-omit-frame-pointer -g"
+LDFLAGS_ASAN="$LDFLAGS"
+LIBS_ASAN="$LIBS"
 
-if test -d /opt/homebrew/lib; then
-    LDFLAGS="$LDFLAGS -L/opt/homebrew/lib -lSystem"
-fi
-echo "LDFLAGS = $LDFLAGS" >> ${CONFIG_MK}
+# Coverage config
+CFLAGS_COV="$CFLAGS -ftest-coverage -fprofile-arcs"
+LDFLAGS_COV="$LDFLAGS"
+LIBS_COV="$LIBS"
 
-LIBS=""
-if pkg-config libbsd-overlay; then
-    LIBS="$LIBS $(pkg-config --libs libbsd-overlay)"
+# Debug config
+CFLAGS_DEBUG="$CFLAGS -DDEBUG -O0 -ggdb"
+LDFLAGS_DEBUG="$LDFLAGS"
+LIBS_DEBUG="$LIBS"
+
+# Main config
+if [ "x$ENV_CFLAGS" = "x" ]; then
+    CFLAGS="$CFLAGS $DEFAULT_CFLAGS"
 fi
-echo "LIBS = $LIBS" >> ${CONFIG_MK}
+CFLAGS="$CFLAGS -DNDEBUG"
+LIBS="$LIBS"
 
-for SRC in $SOURCES; do
-    SRC_LO="$(c2lo "$SRC")"
-    echo >> ${CONFIG_MK}
-    lo_rule "$SRC" >> ${CONFIG_MK}
-    echo "	${LIBTOOL} --tag=CC --mode=compile \${CC} \${CPPFLAGS} \${CFLAGS} -c $SRC -o $SRC_LO" >> ${CONFIG_MK}
-done
+echo "HAVE_ASAN = $HAVE_ASAN" >> ${CONFIG_MK}
+echo "CPPFLAGS = $CPPFLAGS" >> ${CONFIG_MK}
+echo "CFLAGS = $CFLAGS" >> ${CONFIG_MK}
+echo "LDFLAGS = $LDFLAGS" >> ${CONFIG_MK}
+echo "LIBS = $LIBS" >> ${CONFIG_MK}
+echo >> ${CONFIG_MK}
+echo "CFLAGS_ASAN = $CFLAGS_ASAN" >> ${CONFIG_MK}
+echo "LDFLAGS_ASAN = $LDFLAGS_ASAN" >> ${CONFIG_MK}
+echo "LIBS_ASAN = $LIBS_ASAN" >> ${CONFIG_MK}
+echo >> ${CONFIG_MK}
+echo "CFLAGS_COV = $CFLAGS_COV" >> ${CONFIG_MK}
+echo "LDFLAGS_COV = $LDFLAGS_COV" >> ${CONFIG_MK}
+echo "LIBS_COV = $LIBS_COV" >> ${CONFIG_MK}
+echo >> ${CONFIG_MK}
+echo "CFLAGS_DEBUG = $CFLAGS_DEBUG" >> ${CONFIG_MK}
+echo "LDFLAGS_DEBUG = $LDFLAGS_DEBUG" >> ${CONFIG_MK}
+echo "LIBS_DEBUG = $LIBS_DEBUG" >> ${CONFIG_MK}
 
 echo >> ${CONFIG_MK}
 echo "$LIB: $OBJECTS" >> ${CONFIG_MK}
-echo "	${LIBTOOL} --tag=CC --mode=link \${CC} \${LDFLAGS} $OBJECTS \${LIBS} -o $LIB -rpath ${LIBDIR}" >> ${CONFIG_MK}
+echo "	${LIBTOOL} --tag=CC --mode=link \${CC} \${LDFLAGS} ${OBJECTS} \${LIBS} -o ${LIB} -rpath ${LIBDIR}" >> ${CONFIG_MK}
+
+echo >> ${CONFIG_MK}
+echo "$LIB_ASAN: $OBJECTS_ASAN" >> ${CONFIG_MK}
+echo "	${LIBTOOL} --tag=CC --mode=link \${CC} \${LDFLAGS_ASAN} ${OBJECTS_ASAN} \${LIBS_ASAN} -o ${LIB_ASAN}" >> ${CONFIG_MK}
+
+echo >> ${CONFIG_MK}
+echo "$LIB_COV: $OBJECTS_COV" >> ${CONFIG_MK}
+echo "	${LIBTOOL} --tag=CC --mode=link \${CC} \${LDFLAGS_COV} ${OBJECTS_COV} \${LIBS_COV} -o ${LIB_COV}" >> ${CONFIG_MK}
 
 echo >> ${CONFIG_MK}
-echo "install: $LIB" >> ${CONFIG_MK}
+echo "$LIB_DEBUG: $OBJECTS_DEBUG" >> ${CONFIG_MK}
+echo "	${LIBTOOL} --tag=CC --mode=link \${CC} \${LDFLAGS_DEBUG} ${OBJECTS_DEBUG} \${LIBS_DEBUG} -o ${LIB_DEBUG}" >> ${CONFIG_MK}
+
+echo >> ${CONFIG_MK}
+echo "install: ${LIB}" >> ${CONFIG_MK}
 echo "	\${INSTALL} -o \${OWNER} -g \${GROUP} -m 0755 -d \${LIBDIR}" >> ${CONFIG_MK}
-echo "	\${LIBTOOL} --tag=CC --mode=install \${INSTALL} -o \${OWNER} -g \${GROUP} -m 0755 $LIB \${LIBDIR}" >> ${CONFIG_MK}
+echo "	\${LIBTOOL} --tag=CC --mode=install \${INSTALL} -o \${OWNER} -g \${GROUP} -m 0755 ${LIB} \${LIBDIR}" >> ${CONFIG_MK}
+
+for SRC in $SOURCES; do
+    echo >> ${CONFIG_MK}
+    SRC_LO="$(c2ext .main.lo "$SRC")"
+    ext_rule .main.lo "$SRC" >> ${CONFIG_MK}
+    echo "	${LIBTOOL} --tag=CC --mode=compile \${CC} \${CPPFLAGS} \${CFLAGS} -c $SRC -o $SRC_LO" >> ${CONFIG_MK}
+
+    echo >> ${CONFIG_MK}
+    SRC_ASAN_LO="$(c2ext .asan.lo "$SRC")"
+    ext_rule .asan.lo "$SRC" >> ${CONFIG_MK}
+    echo "	${LIBTOOL} --tag=CC --mode=compile \${CC} \${CPPFLAGS} \${CFLAGS_ASAN} -c $SRC -o $SRC_ASAN_LO" >> ${CONFIG_MK}
+
+    echo >> ${CONFIG_MK}
+    SRC_COV_LO="$(c2ext .cov.lo "$SRC")"
+    ext_rule .cov.lo "$SRC" >> ${CONFIG_MK}
+    echo "	${LIBTOOL} --tag=CC --mode=compile \${CC} \${CPPFLAGS} \${CFLAGS_COV} -c $SRC -o $SRC_COV_LO" >> ${CONFIG_MK}
+
+    echo >> ${CONFIG_MK}
+    SRC_DEBUG_LO="$(c2ext .debug.lo "$SRC")"
+    ext_rule .debug.lo "$SRC" >> ${CONFIG_MK}
+    echo "	${LIBTOOL} --tag=CC --mode=compile \${CC} \${CPPFLAGS} \${CFLAGS_DEBUG} -c $SRC -o $SRC_DEBUG_LO" >> ${CONFIG_MK}
+done
+
+update_config_mk
diff --git a/librtbuf/sources.mk b/librtbuf/sources.mk
new file mode 100644
index 0000000..1c6ec58
--- /dev/null
+++ b/librtbuf/sources.mk
@@ -0,0 +1,3 @@
+# sources.mk generated by update_sources
+SOURCES = data.c rtbuf.c rtbuf_lib.c rtbuf_proc.c rtbuf_type.c rtbuf_var.c symbol.c 
+LO_SOURCES = data.c rtbuf.c rtbuf_lib.c rtbuf_proc.c rtbuf_type.c rtbuf_var.c symbol.c 
diff --git a/librtbuf/sources.sh b/librtbuf/sources.sh
new file mode 100644
index 0000000..ee23088
--- /dev/null
+++ b/librtbuf/sources.sh
@@ -0,0 +1,3 @@
+# sources.sh generated by update_sources
+SOURCES='data.c rtbuf.c rtbuf_lib.c rtbuf_proc.c rtbuf_type.c rtbuf_var.c symbol.c '
+LO_SOURCES='data.c rtbuf.c rtbuf_lib.c rtbuf_proc.c rtbuf_type.c rtbuf_var.c symbol.c '
diff --git a/librtbuf/update_sources b/librtbuf/update_sources
new file mode 100755
index 0000000..8ca1c6a
--- /dev/null
+++ b/librtbuf/update_sources
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+. ../config.subr
+
+echo "# sources.mk generated by update_sources" > ${SOURCES_MK}
+echo "# sources.sh generated by update_sources" > ${SOURCES_SH}
+
+SOURCES="$(ls *.c)"
+SOURCES="$(echo "$SOURCES" | tr '\n' ' ')"
+echo "SOURCES = $SOURCES" >> ${SOURCES_MK}
+echo "SOURCES='$SOURCES'" >> ${SOURCES_SH}
+
+LO_SOURCES="$SOURCES"
+echo "LO_SOURCES = $LO_SOURCES" >> ${SOURCES_MK}
+echo "LO_SOURCES='$LO_SOURCES'" >> ${SOURCES_SH}
+
+update_sources_mk
+update_sources_sh