diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..e08aed8
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+######      Building tasks     #######
+build: 
+	@build_scripts/build_configurations/build.sh
+
+build_dbg: 
+	@build_scripts/build_configurations/build_dbg.sh
+
+######      Testing tasks      #######
+test: build
+	@build_scripts/build_configurations/test.sh
+
+test_valgrind: build_dbg
+	@build_scripts/build_configurations/test_valgrind.sh
+
+all: build
diff --git a/build_scripts/build_configurations/build.sh b/build_scripts/build_configurations/build.sh
new file mode 100644
index 0000000..4a11792
--- /dev/null
+++ b/build_scripts/build_configurations/build.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+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" $BUILD_FILE
diff --git a/build_scripts/build_configurations/build_dbg.sh b/build_scripts/build_configurations/build_dbg.sh
new file mode 100644
index 0000000..54a79b0
--- /dev/null
+++ b/build_scripts/build_configurations/build_dbg.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${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" $TEST_DBG_FILE
diff --git a/build_scripts/build_configurations/test.sh b/build_scripts/build_configurations/test.sh
new file mode 100644
index 0000000..45ac85c
--- /dev/null
+++ b/build_scripts/build_configurations/test.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${CYAN}================[test]================\n"
+cd $OUTDIR
+./$TEST_FILE
+cd ..
diff --git a/build_scripts/build_configurations/test_valgrind.sh b/build_scripts/build_configurations/test_valgrind.sh
new file mode 100644
index 0000000..a92df20
--- /dev/null
+++ b/build_scripts/build_configurations/test_valgrind.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+source build_scripts/init.sh
+
+print "${CYAN}===========[test_valgrind]============\n"
+cd $OUTDIR
+valgrind $VALGRIND_ARGS ./$TEST_DBG_FILE
+cat "valgrind.log"
+cd ..
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..7f99014
--- /dev/null
+++ b/build_scripts/default.config.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+OUTDIR=bin
+OBJDIR=obj
+CMP_C=gcc
+CMP_CPP=g++
+STD_C=c11
+STD_CPP=c++17
+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_C_ARGS="-O2"
+BUILD_CPP_ARGS="$BUILD_C_ARGS"
+BUILD_LINKER_ARGS=""
+
+# build_dbg
+TEST_DBG_FILE=$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/functions.sh b/build_scripts/functions.sh
new file mode 100644
index 0000000..0e09cc3
--- /dev/null
+++ b/build_scripts/functions.sh
@@ -0,0 +1,72 @@
+#!/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"
+    local compilation_error=0
+
+	for srcfile in $sources
+    do (
+        local object="$OBJDIR/$(basename $srcfile).o"
+        if ! $($cmp -std=$std $warn $args -c -o $object $srcfile) 
+        then
+            print "${RED}some error happened\n"
+            compilation_error=1
+        fi
+    ) & done
+    wait
+
+    if [ $compilation_error != 0 ]
+    then
+        exit 1
+    fi
+}
+
+# (args, sources)
+function compile_c {
+	print "${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"
+    if $CMP_CPP $args -o $outfile $(echo $objects | tr '\n' ' ')
+    then 
+        print "${GREEN}file $CYAN$outfile ${GREEN}created\n"
+        rm -rf $OBJDIR
+    else
+        print "${RED}some error happened\n"
+        exit 1
+    fi
+}
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/src/lexer/lexer.c b/src/lexer/lexer.c
index aa52791..07d5f71 100644
--- a/src/lexer/lexer.c
+++ b/src/lexer/lexer.c
@@ -25,7 +25,7 @@ Maybe _throw_wrongchar(SharedLexerData* sld){
     char* errline=string_extract(line);
     char* _context=string_extract(context);
     printf("\n\e[91mwrong char <%c> at [%s:%u:%u %s]\n >>> %s\n",
-                source[charnum], filename,linenum,charnum,context, errline);
+                source[charnum], filename,linenum,charnum,_context, errline);
     exit(96);
 }
 #define throw_wrongchar(freeMem) { freeMem; return _throw_wrongchar(sld); }
diff --git a/src/lexer/my_type_ext.h b/src/lexer/my_type_ext.h
index 748d859..f47ccd9 100644
--- a/src/lexer/my_type_ext.h
+++ b/src/lexer/my_type_ext.h
@@ -2,6 +2,7 @@
 
 #include "../../../kerep/src/base/base.h"
 
+
 typedef enum lexer_type{
     AutoarrTokenPtr=my_type_last+1
 } lexer_type;
\ No newline at end of file