“SDL_tff no file found”

I am start game development with C++ and i am using SDL2, i download sdl_tff extension in libsdl.org and run ./configure->make->make install to install it but when i compile it says no file found , I am currently learning from lazyfoo tutorials my makefile to generate the program is:

# set the compiler CC := clang  # set the compiler flags  CFLAGS := -lSDL2 -lSDL2_image -lSDL2_tff  # add header files here HDRS :=  # add source files here SRCS := pepe.cpp  # generate names of object files OBJS := $  (SRCS:.cpp=.o)  #This is the target that compiles our executable all : $  (SRCS)     $  (CC) $  (SRCS) $  (CFLAGS) -o $  (OBJS)     ./$  (OBJS) 

When I do find /usr|grep SDL_ttf it gives me the following output:

/usr/lib/x86_64-linux-gnu/libSDL_ttf.a /usr/lib/x86_64-linux-gnu/libSDL_ttf-2.0.so.0 /usr/lib/x86_64-linux-gnu/pkgconfig/SDL_ttf.pc /usr/lib/x86_64-linux-gnu/libSDL_ttf-2.0.so.0.10.1 /usr/lib/x86_64-linux-gnu/libSDL_ttf.so /usr/local/include/SDL2/SDL_ttf.h /usr/include/SDL2/SDL_ttf.h /usr/include/SDL/SDL_ttf.h 

I forgot to say my operating system is Ubuntu 18.04 LTS. Thanks!