diff --git a/include/color_printer_true.hpp b/include/color_printer_true.hpp
index fcfd8f4..202bf1c 100644
--- a/include/color_printer_true.hpp
+++ b/include/color_printer_true.hpp
@@ -49,7 +49,7 @@ private:
 		color curr = color::red;
 
 
-		constexpr color_state(void)noexcept{
+		color_state(void)noexcept{
 			switch(rand()%3){
 			case 0:
 				r = color_max_amount;
@@ -95,7 +95,7 @@ private:
 		}
 	}m_line_color = {}, m_color = m_line_color;
 public:
-	constexpr color_printer_true(const cmd_args& args)noexcept:
+	color_printer_true(const cmd_args& args)noexcept:
 		color_printer_base<color_printer_true>(args, args.invert ? L"\033[38;5;0m\033[48;2;%s;%s;%sm" : L"\033[38;2;%s;%s;%sm"){}
 
 protected:
diff --git a/include/printer_base.hpp b/include/printer_base.hpp
index 9bab6fa..19f30bc 100644
--- a/include/printer_base.hpp
+++ b/include/printer_base.hpp
@@ -71,11 +71,11 @@ protected:
 	constexpr printer_base(const wchar_t* tabstr, const cmd_args& args)noexcept;
 	~printer_base(void)noexcept = default;
 public:
-	constexpr Derived& print(wchar_t s)noexcept(noexcept(std::declval<Derived>()._print(s)));
-	constexpr Derived& print(const wchar_t* s)noexcept(noexcept(std::declval<printer_base<Derived>>().print(std::declval<wchar_t>())));
-	constexpr Derived& print(char s);
-	constexpr Derived& print(const char* s);
-	constexpr Derived& reset(void);
+	Derived& print(wchar_t s)noexcept(noexcept(std::declval<Derived>()._print(s)));
+	Derived& print(const wchar_t* s)noexcept(noexcept(std::declval<printer_base<Derived>>().print(std::declval<wchar_t>())));
+	Derived& print(char s);
+	Derived& print(const char* s);
+	Derived& reset(void);
 };
 
 #endif
diff --git a/include/printer_base.tpp b/include/printer_base.tpp
index d59698e..9a9a02b 100644
--- a/include/printer_base.tpp
+++ b/include/printer_base.tpp
@@ -39,7 +39,7 @@ constexpr printer_base<Derived>::printer_base(const wchar_t* tabstr, const cmd_a
 	m_tab_size(wcslen(tabstr)){}
 
 template<class Derived>
-constexpr auto printer_base<Derived>::print(wchar_t s)noexcept(noexcept(std::declval<Derived>()._print(s))) -> Derived&{
+auto printer_base<Derived>::print(wchar_t s)noexcept(noexcept(std::declval<Derived>()._print(s))) -> Derived&{
 	Derived& dv = static_cast<Derived&>(*this);
 		//suppress repeated blank lines
 		if(m_squeeze_blank){
@@ -88,27 +88,27 @@ constexpr auto printer_base<Derived>::print(wchar_t s)noexcept(noexcept(std::dec
 }
 
 template<class Derived>
-constexpr auto printer_base<Derived>::print(const wchar_t* s)noexcept(noexcept(std::declval<printer_base<Derived>>().print(std::declval<wchar_t>()))) -> Derived&{
+auto printer_base<Derived>::print(const wchar_t* s)noexcept(noexcept(std::declval<printer_base<Derived>>().print(std::declval<wchar_t>()))) -> Derived&{
 	for(;*s != 0;++s){
 		print(*s);
 	}
 	return static_cast<Derived&>(*this);
 }
 template<class Derived>
-constexpr auto printer_base<Derived>::print(char s) -> Derived&{
+auto printer_base<Derived>::print(char s) -> Derived&{
 	wchar_t tmp;
 	mbstowcs(&tmp, &s, 1);
 	return print(tmp);
 }
 template<class Derived>
-constexpr auto printer_base<Derived>::print(const char* s) -> Derived&{
+auto printer_base<Derived>::print(const char* s) -> Derived&{
 	for(;*s != 0;++s){
 		print(*s);
 	}
 	return static_cast<Derived&>(*this);
 }
 template<class Derived>
-constexpr auto printer_base<Derived>::reset(void) -> Derived&{
+auto printer_base<Derived>::reset(void) -> Derived&{
 	if constexpr(HAS_FUNC(_reset)<Derived,Derived&>::value){
 		return static_cast<Derived&>(*this)._reset();
 	}else{
diff --git a/makefile b/makefile
index 6032124..55be8c6 100644
--- a/makefile
+++ b/makefile
@@ -11,7 +11,7 @@
 #You should have received a copy of the GNU General Public License
 #along with this program. If not, see <http://www.gnu.org/licenses/>.
 
-#Copyright 2018 rexy712
+#Copyright 2018-2019 rexy712
 
 
 SOURCE_DIRS:=src
@@ -19,7 +19,7 @@ OBJDIR:=obj
 DEPDIR:=$(OBJDIR)/dep
 INCLUDE_DIRS:=include
 EXT:=cpp
-MAIN_EXECUTABLE:=tester
+MAIN_EXECUTABLE:=roflcat
 
 CXX:=g++
 CXXFLAGS:=-g -std=c++17 -Wall -pedantic -Wextra -fno-exceptions -fno-rtti
@@ -38,7 +38,7 @@ ifeq ($(OS),Windows_NT)
 	rmdir=rd /s /q $(1) > NUL 2>&1
 	move=move /y $(subst /,\,$(1)) $(subst /,\,$(2)) > NUL 2>&1
 	MAIN_EXECUTABLE:=$(MAIN_EXECUTABLE).exe
-	LDLIBS:=-lglfw3 -lSOIL -lgl3w -lm -lopengl32 -lglu32 -lgdi32 -lkernel32
+	LDLIBS:=-lncurses
 else
 	mkdir=mkdir -p $(1)
 	rm=rm -f $(1)