diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index e0e5b05..0000000
--- a/.gitmodules
+++ /dev/null
@@ -1,4 +0,0 @@
-[submodule "cbuild"]
-	path = cbuild
-	url = https://timerix.ddns.net:3322/timerix/cbuild.git
-    branch = main
diff --git a/Makefile b/Makefile
deleted file mode 100644
index f225cc0..0000000
--- a/Makefile
+++ /dev/null
@@ -1,85 +0,0 @@
-######################################
-######       Build tasks       #######
-######################################
-
-all: build_exec_dbg
-
-# creates executable using profiling info generated by profile
-build_exec: profile
-	@cbuild/call_task.sh build_exec  2>&1 | tee -a make_raw.log
-
-# creates executable with debug info and no optimizations
-build_exec_dbg:
-	@cbuild/call_task.sh build_exec_dbg 2>&1 | tee make_raw.log
-
-# creates shared library
-build_shared_lib:
-	@cbuild/call_task.sh build_shared_lib 2>&1 | tee make_raw.log
-
-# creates shared library with debug symbols and no optimizations
-build_shared_lib_dbg:
-	@cbuild/call_task.sh build_shared_lib_dbg 2>&1 | tee make_raw.log
-
-# creates static library
-build_static_lib:
-	@cbuild/call_task.sh build_static_lib 2>&1 | tee make_raw.log
-
-# creates static library with debug symbols and no optimizations
-build_static_lib_dbg:
-	@cbuild/call_task.sh build_static_lib_dbg 2>&1 | tee make_raw.log
-
-######################################
-######       Launch tasks      #######
-######################################
-
-# executes $EXEC_FILE
-exec: build_exec
-	@cbuild/call_task.sh exec 2>&1 | tee -a make_raw.log
-
-# executes $EXEC_FILE
-exec_dbg: build_exec_dbg
-	@cbuild/call_task.sh exec 2>&1 | tee -a make_raw.log
-
-# executes $EXEC_FILE with valgrind memory checker
-valgrind: build_exec_dbg
-	@cbuild/call_task.sh valgrind 2>&1 | tee -a make_raw.log
-
-# generates profiling info
-profile:
-	@cbuild/call_task.sh profile 2>&1 | tee make_raw.log
-
-# compiles program with -pg and runs it with gprof
-# uses gprof2dot python script to generate function call tree (pip install gprof2dot)
-# requires graphviz (https://www.graphviz.org/download/source/)
-gprof:
-	@cbuild/call_task.sh gprof 2>&1 | tee make_raw.log
-
-# compiles program and runs it with callgrind (part of valgrind)
-# uses gprof2dot python script to generate function call tree (pip install gprof2dot)
-# requires graphviz (https://www.graphviz.org/download/source/)
-# P.S. detailed results can be viewed in KCacheGrind
-callgrind:
-	@cbuild/call_task.sh callgrind 2>&1 | tee make_raw.log
-
-# compiles executable with sanitizers and executes it to find errors and warnings
-sanitize:
-	@cbuild/call_task.sh sanitize 2>&1 | tee make_raw.log
-
-######################################
-######       Other tasks       #######
-######################################
-
-# deletes generated files
-clean:
-	@cbuild/call_task.sh clean 2>&1 | tee make_raw.log
-
-# removes all unreadable characters copied from stdio
-fix_log:
-	sed 's/[^[:blank:][:print:]]//g' make_raw.log \
-		| sed 's/\[0;[0-9][0-9]m//g' \
-		| sed 's/\[0;[0-9]m//g' \
-		| sed 's/\[[0-9][0-9]m//g' \
-		| sed 's/\[[0-9]m//g' \
-		| sed 's/  H  //g' \
-		| sed 's/\[3gH  //g' \
-		> make_fixed.log
diff --git a/README.md b/README.md
index f53b736..d297068 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
 # kerep
-
-My library written in C
+My library written in C.
+Requires [cbuild](https://timerix.ddns.net:3322/Timerix/cbuild).
diff --git a/cbuild b/cbuild
deleted file mode 160000
index 6d285a8..0000000
--- a/cbuild
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 6d285a88d869e7710a196aaa91a162658fe0efc0
diff --git a/default.config b/default.config
index 3c2656d..7cac0f5 100644
--- a/default.config
+++ b/default.config
@@ -1,6 +1,6 @@
 #!/bin/bash
-CBUILD_VERSION=7
-CONFIG_VERSION=8
+CBUILD_VERSION=2.0.1
+CONFIG_VERSION=9
 
 PROJECT="kerep"
 CMP_C="gcc"
@@ -115,7 +115,7 @@ case "$TASK" in
         ;;
     # executes $EXEC_FILE with valgrind memory checker
     valgrind)  
-        VALGRIND_ARGS="-s --read-var-info=yes --track-origins=yes --fullpath-after=$PROJECT/ --leak-check=full --show-leak-kinds=all" 
+        VALGRIND_ARGS="-s --read-var-info=yes --track-origins=yes --fullpath-after=$(pwd) --leak-check=full --show-leak-kinds=all" 
         TASK_SCRIPT=cbuild/default_tasks/valgrind.sh
         ;;
     # generates profiling info
@@ -176,7 +176,7 @@ case "$TASK" in
         TASK_SCRIPT=cbuild/default_tasks/clean.sh
         ;;
     # nothing to do
-    no_task)
+    "" | no_task)
         ;;
     # unknown task
     *)