diff --git a/.gitignore b/.gitignore
index f72a415..70cf9a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,12 +2,11 @@
 bin/
 obj/
 
-# IDE files
+# user files
+.old*/
 .vs/
 .vscode/
 .vshistory/
 .editorconfig
 *.user
-
-#backups
-.old*/
+.config
diff --git a/Makefile b/Makefile
index 90c1221..c5b6c64 100644
--- a/Makefile
+++ b/Makefile
@@ -1,113 +1,15 @@
-######################################
-######          Config         #######
-######################################
-OUTDIR:=bin
-OBJDIR:=obj
-TEST_FILE:=kerep.com
-LIB_FILE:=kerep.so
-DLL_FILE:=kerep.dll
-CMP_C:=gcc
-CMP_CPP:=g++
-STD_C:=c11
-STD_CPP:=c++17
-WARN_C:=-Wall -Wno-discarded-qualifiers #-Wextra
-WARN_CPP:=-Wall #-Wextra
-SRC_C:=    $(wildcard src/*.c   )  $(wildcard src/**/*.c    )
-SRC_CPP:=  $(wildcard src/*.cpp )  $(wildcard src/**/*.cpp  )
-TESTS_C:=  $(wildcard tests/*c  )  $(wildcard tests/**/*.c  )
-TESTS_CPP:=$(wildcard tests/*cpp)  $(wildcard tests/**/*.cpp)
-
-
-######################################
-######       Small tasks       #######
-######################################
-
-all: clear_c clear_bin build_test
-
-clear_c:
-	clear
-
-clear_bin:
-	@echo -e '\e[96m-------------[clear_bin]--------------\e[0m'
-	rm -rf $(OUTDIR)
-	mkdir  $(OUTDIR)
-
-clear_obj:
-	@echo -e '\e[96m-------------[clear_obj]--------------\e[0m'
-	rm -rf $(OBJDIR)
-	mkdir  $(OBJDIR)
-
-
-######################################
 ######       Build tasks       #######
-######################################
+build_test: 
+	@build_scripts/build_test.sh
 
-# set it in build targets
-SOURCES_C:=
-SOURCES_CPP:=
-CMPARGS:=
-LNKARGS:=
-OUTFILE:=
+build_lib: 
+	@build_scripts/build_lib.sh
 
-compile_c_file=$(CMP_C) -std=$(STD_C) $(WARN_C) $(CMPARGS) -c ../$(SRCFILE)
-__compile_c:
-	@echo -e '\e[96m-------------[compile_c]--------------\e[0m'
-	$(eval commands:=cd $(OBJDIR) $(foreach SRCFILE, $(SOURCES_C), ; $(compile_c_file)))
-	$(commands)
-
-compile_cpp_file=$(CMP_CPP) -std=$(STD_CPP) $(WARN_CPP) $(CMPARGS) -c ../$(SRCFILE)
-__compile_cpp:
-	@echo -e '\e[96m------------[compile_cpp]-------------\e[0m'
-	$(eval commands:=cd $(OBJDIR) $(foreach SRCFILE, $(SOURCES_CPP), ; $(compile_cpp_file)))
-	$(commands)
-
-__compile: __compile_c #__compile_cpp
-
-__link:
-	@echo -e '\e[96m----------------[link]----------------\e[0m'
-	$(CMP_C) $(LNKARGS) -o $(OUTDIR)/$(OUTFILE) $(wildcard $(OBJDIR)/*.o)
-
-######       Build test        #######
-__build_test_pre:
-	@echo -e '\e[96m===========[build_test_dbg]===========\e[0m'
-build_test: OUTFILE=$(TEST_FILE)
-build_test: SOURCES_C=$(SRC_C) $(TESTS_C)
-build_test: SOURCES_CPP=$(SRC_CPP) $(TESTS_CPP)
-build_test: CMPARGS=-O0 -g
-build_test: LNKARGS=
-build_test: clear_c __build_test_pre clear_obj __compile __link
-
-######        Build lib        #######
-__build_lib_pre:
-	@echo -e '\e[96m=============[build_lib]==============\e[0m'
-build_lib: OUTFILE=$(LIB_FILE)
-build_lib: SOURCES_C=$(SRC_C) tests/test_marshalling.c
-build_lib: SOURCES_CPP=$(SRC_CPP)
-build_lib: CMPARGS=-O2 -fpic -shared
-build_lib: LNKARGS=-flto -Wl,-soname,$(LIB_FILE)
-build_lib: clear_c __build_lib_pre clear_obj __compile __link
-
-######        Build dll        #######
-__build_dll_pre:
-	@echo -e '\e[96m=============[build_dll]==============\e[0m'
-build_dll: OUTFILE=$(DLL_FILE)
-build_dll: SOURCES_C=$(SRC_C) tests/test_marshalling.c
-build_dll: SOURCES_CPP=$(SRC_CPP)
-build_dll: CMPARGS=-O2 -fpic -shared
-build_dll: LNKARGS=-static-libgcc -static-libstdc++
-build_dll: clear_c __build_dll_pre clear_obj __compile __link
-
-
-######################################
 ######      Testing tasks      #######
-######################################
-test: build_test
-	@echo -e '\e[96m================[test]================\e[0m'
-	@tabs 4
-	cd $(OUTDIR); ./$(TEST_FILE)
+test: 
+	@build_scripts/test.sh
 
-valgrind: build_test
-	@echo -e '\e[96m==============[valgrind]==============\e[0m'
-	@tabs 4
-	cd $(OUTDIR); valgrind -s --read-var-info=yes --track-origins=yes --fullpath-after=kerep/ \
-	--leak-check=full --show-leak-kinds=all $(TEST_FILE).dbg
+test_valgrind: 
+	@build_scripts/test_valgrind.sh
+
+all: build_test test
diff --git a/build_scripts/build_lib.sh b/build_scripts/build_lib.sh
new file mode 100644
index 0000000..20604be
--- /dev/null
+++ b/build_scripts/build_lib.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${CYAN}=============[build_lib]==============\n"
+clear_dir bin
+clear_dir obj
+compile_c "-O2 -fpic -shared" "$SRC_C tests/test_marshalling.c"
+compile_cpp "-flto -Wl,-soname,$LIB_FILE" "$SRC_CPP"
+link " " $LIB_FILE
+rm -rf $OBJDIR
diff --git a/build_scripts/build_test.sh b/build_scripts/build_test.sh
new file mode 100644
index 0000000..18bee46
--- /dev/null
+++ b/build_scripts/build_test.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${CYAN}=============[build_test]=============\n"
+clear_dir bin
+clear_dir obj
+compile_c "-O0 -g" "$SRC_C $TESTS_C"
+compile_cpp "-O0 -g" "$SRC_CPP $TESTS_CPP"
+link " " $TEST_FILE
+rm -rf $OBJDIR
diff --git a/build_scripts/colors.sh b/build_scripts/colors.sh
new file mode 100644
index 0000000..e3e8363
--- /dev/null
+++ b/build_scripts/colors.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+BLACK='\033[0;30m'
+GRAY='\033[0;37m'
+WHITE='\033[0;97m'
+RED='\033[0;91m'
+GREEN='\033[0;92m'
+YELLOW='\033[0;93m'
+BLUE='\033[0;94m'
+PURPLE='\033[0;95m'
+CYAN='\033[0;96m'
diff --git a/build_scripts/default.config.sh b/build_scripts/default.config.sh
new file mode 100644
index 0000000..740a22e
--- /dev/null
+++ b/build_scripts/default.config.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+OUTDIR=bin
+OBJDIR=obj
+TEST_FILE=kerep.com
+LIB_FILE=kerep.so
+DLL_FILE=kerep.dll
+CMP_C=gcc
+CMP_CPP=g++
+STD_C=c11
+STD_CPP=c++17
+WARN_C="-Wall -Wno-discarded-qualifiers" #-Wextra
+WARN_CPP="-Wall -Wconversion-null -Wno-unused-variable -Wno-return-type" #-Wextra
+SRC_C="$(    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 --read-var-info=yes --track-origins=yes --fullpath-after=kerep/ \
+	--leak-check=full --show-leak-kinds=all
diff --git a/build_scripts/functions.sh b/build_scripts/functions.sh
new file mode 100644
index 0000000..3aacfd1
--- /dev/null
+++ b/build_scripts/functions.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+function print {
+    printf "$1$GRAY"
+}
+
+function clear_dir {
+	print "${BLUE}clearing $1\n"
+    rm -rf $1
+	mkdir $1
+}
+
+function compile {
+    local cmp=$1
+    print "${BLUE}compiler: ${GRAY}$cmp\n"
+    local std=$2
+    print "${BLUE}standard: ${GRAY}$std\n"
+    local warn=$3
+    print "${BLUE}warnings: ${GRAY}$warn\n"
+    local args=$4
+    print "${BLUE}args: ${GRAY}$args\n"
+    local sources=$5
+    print "${BLUE}sources: ${GRAY}$sources\n"
+	for SRCFILE in $sources
+    do
+        $cmp -std=$std $warn $args -c -o "$OBJDIR/$(basename $SRCFILE).o" $SRCFILE
+    done
+}
+
+# (args, sources)
+function compile_c {
+	print "${CYAN}-------------[compile_c]--------------\n"
+    compile $CMP_C $STD_C "$WARN_C " "$1" "$2"
+}
+
+# (args, sources)
+function compile_cpp {
+	print "${CYAN}------------[compile_cpp]-------------\n"
+    compile $CMP_CPP $STD_CPP "$WARN_CPP" "$1" "$2"
+}
+
+# (args, outfile)
+function link {
+	print "${CYAN}----------------[link]----------------\n"
+    local args=$1
+    print "${BLUE}args: ${GRAY}$args\n"
+    local outfile=$OUTDIR/$2
+    print "${BLUE}outfile: ${GRAY}$outfile\n"
+    local objects="$(find $OBJDIR -name *.o)"
+    print "${BLUE}objects: ${GRAY}$objects\n"
+    $CMP_C $args -o $outfile $(echo $objects | tr '\n' ' ')
+    print "${GREEN}file $CYAN$outfile ${GREEN}created\n"
+}
diff --git a/build_scripts/init.sh b/build_scripts/init.sh
new file mode 100644
index 0000000..c249b95
--- /dev/null
+++ b/build_scripts/init.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+reset
+tabs 4
+
+source build_scripts/colors.sh
+source build_scripts/functions.sh
+
+if [ ! -f ".config" ]; then
+    print "${YELLOW}./.config doesn't exists\n"
+    cp build_scripts/default.config.sh .config
+    print "${YELLOW}default config created\n"
+    while true; do
+        print "${WHITE}continue? (y/n) "
+        read answ
+        case $answ in
+            [Yy] ) break;;
+            [Nn] ) exit;;
+            * ) print "${RED}incorrect answer\n";;
+        esac
+    done
+fi
+source .config
diff --git a/build_scripts/test.sh b/build_scripts/test.sh
new file mode 100644
index 0000000..9e836f8
--- /dev/null
+++ b/build_scripts/test.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${CYAN}================[test]================\n"
+cd $OUTDIR; 
+./$TEST_FILE
+cd ..
diff --git a/build_scripts/test_valgrind.sh b/build_scripts/test_valgrind.sh
new file mode 100644
index 0000000..1fd944f
--- /dev/null
+++ b/build_scripts/test_valgrind.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${CYAN}===========[test_valgrind]============\n"
+cd $OUTDIR; 
+valgrind $VALGRIND_ARGS $TEST_FILE
+cd ..