diff --git a/.gitignore b/.gitignore
index 6e5b49f..c35f56d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ obj/
 *.user
 *.vcxproj.filters
 .config
+deps/kerep.a
\ No newline at end of file
diff --git a/build_scripts/build_configurations/build.sh b/build_scripts/build_configurations/build.sh
index 4a11792..342a577 100644
--- a/build_scripts/build_configurations/build.sh
+++ b/build_scripts/build_configurations/build.sh
@@ -5,6 +5,7 @@ source build_scripts/init.sh
 print "${CYAN}===============[build]================\n"
 clear_dir "$OUTDIR"
 clear_dir "$OBJDIR"
-compile_c "$BUILD_C_ARGS" "$SRC_C $TESTS_C"
-compile_cpp "$BUILD_CPP_ARGS" "$SRC_CPP $TESTS_CPP"
-link "$BUILD_CPP_ARGS $BUILD_LINKER_ARGS" $BUILD_FILE
+compile_c "$BUILD_C_ARGS" "$SRC_C"
+compile_cpp "$BUILD_CPP_ARGS" "$SRC_CPP"
+ar x deps/* --output=obj
+link "$BUILD_CPP_ARGS $BUILD_LINKER_ARGS" "$BUILD_FILE"
diff --git a/build_scripts/build_configurations/build_dbg.sh b/build_scripts/build_configurations/build_dbg.sh
index 54a79b0..c177223 100644
--- a/build_scripts/build_configurations/build_dbg.sh
+++ b/build_scripts/build_configurations/build_dbg.sh
@@ -5,6 +5,6 @@ source build_scripts/init.sh
 print "${CYAN}=============[build_dbg]==============\n"
 clear_dir "$OUTDIR"
 clear_dir "$OBJDIR"
-compile_c "$BUILD_DBG_C_ARGS" "$SRC_C $TESTS_C"
-compile_cpp "$BUILD_DBG_CPP_ARGS" "$SRC_CPP $TESTS_CPP"
-link "$BUILD_DBG_CPP_ARGS $BUILD_DBG_LINKER_ARGS" $TEST_DBG_FILE
+compile_c "$BUILD_DBG_C_ARGS" "$SRC_C"
+compile_cpp "$BUILD_DBG_CPP_ARGS" "$SRC_CPP"
+link "$BUILD_DBG_CPP_ARGS $BUILD_DBG_LINKER_ARGS" "$BUILD_FILE"
diff --git a/build_scripts/build_configurations/test.sh b/build_scripts/build_configurations/test.sh
index 45ac85c..a75a49c 100644
--- a/build_scripts/build_configurations/test.sh
+++ b/build_scripts/build_configurations/test.sh
@@ -4,5 +4,5 @@ source build_scripts/init.sh
 
 print "${CYAN}================[test]================\n"
 cd $OUTDIR
-./$TEST_FILE
+./$BUILD_FILE
 cd ..
diff --git a/build_scripts/build_configurations/test_valgrind.sh b/build_scripts/build_configurations/test_valgrind.sh
index a92df20..7d159d0 100644
--- a/build_scripts/build_configurations/test_valgrind.sh
+++ b/build_scripts/build_configurations/test_valgrind.sh
@@ -4,6 +4,6 @@ source build_scripts/init.sh
 
 print "${CYAN}===========[test_valgrind]============\n"
 cd $OUTDIR
-valgrind $VALGRIND_ARGS ./$TEST_DBG_FILE
+valgrind $VALGRIND_ARGS ./$BUILD_DBG_FILE
 cat "valgrind.log"
 cd ..
diff --git a/build_scripts/build_deps.sh b/build_scripts/build_deps.sh
new file mode 100644
index 0000000..2931273
--- /dev/null
+++ b/build_scripts/build_deps.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+source build_scripts/colors.sh
+
+printf "${CYAN}=============[build_deps]=============\n"
+mkdir -p deps
+cd ../kerep/
+
+if [ ! -f "bin/kerep.a" ]; then
+    printf "${YELLOW}../kerep/bin/kerep.a doesn't exist\n"
+    while true; do
+        printf "${WHITE}build it from source? (y/n) "
+        read answ
+        case $answ in
+            [Yy] ) break;;
+            [Nn] ) exit;;
+            * ) printf "${RED}incorrect answer\n";;
+        esac
+    done
+    make build_static_lib
+fi
+cp bin/kerep.a ../cobek/deps/
+printf "${GREEN} copied ${CYAN}kerep.a\n"
+cd ../cobek
diff --git a/build_scripts/default.config.sh b/build_scripts/default.config.sh
index 7f99014..0b4a139 100644
--- a/build_scripts/default.config.sh
+++ b/build_scripts/default.config.sh
@@ -10,18 +10,16 @@ WARN_C="-Wall -Wno-discarded-qualifiers" #-Wextra
 WARN_CPP="-Wall -Wno-unused-variable -Wno-return-type" #-Wextra
 SRC_C="$(    find src -name '*.c')"
 SRC_CPP="$(  find src -name '*.cpp')"
-TESTS_C="$(  find tests -name '*.c')"
-TESTS_CPP="$(find tests -name '*.cpp')"
 VALGRIND_ARGS="-s --log-file=valgrind.log --read-var-info=yes --track-origins=yes --fullpath-after=cobek/ --leak-check=full --show-leak-kinds=all"
 
 # build
-TEST_FILE=cb2c.com
+BUILD_FILE=cb2c.com
 BUILD_C_ARGS="-O2"
 BUILD_CPP_ARGS="$BUILD_C_ARGS"
 BUILD_LINKER_ARGS=""
 
 # build_dbg
-TEST_DBG_FILE=$TEST_FILE
+BUILD_DBG_FILE=$TEST_FILE
 BUILD_DBG_C_ARGS="-O0 -g"
 BUILD_DBG_CPP_ARGS="$BUILD_DBG_C_ARGS"
 BUILD_DBG_LINKER_ARGS=""
diff --git a/build_scripts/init.sh b/build_scripts/init.sh
index c249b95..8584019 100644
--- a/build_scripts/init.sh
+++ b/build_scripts/init.sh
@@ -7,7 +7,7 @@ source build_scripts/colors.sh
 source build_scripts/functions.sh
 
 if [ ! -f ".config" ]; then
-    print "${YELLOW}./.config doesn't exists\n"
+    print "${YELLOW}./.config doesn't exist\n"
     cp build_scripts/default.config.sh .config
     print "${YELLOW}default config created\n"
     while true; do
@@ -21,3 +21,5 @@ if [ ! -f ".config" ]; then
     done
 fi
 source .config
+
+bash build_scripts/build_deps.sh