improve build system

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "matrix-commander"]
 	path = matrix-commander
 	url = https://github.com/8go/matrix-commander
+[submodule "src/cpp-httplib"]
+	path = src/cpp-httplib
+	url = https://github.com/yhirose/cpp-httplib

CMakeLists.txt

@@ -11,7 +11,7 @@ endif()
 
 message("Using cmake flags: ${CMAKE_CXX_FLAGS}")
 
-file(GLOB_RECURSE SOURCES src/*.cpp)
+include(src/CMakeLists.txt)
 add_executable(Portfolio ${SOURCES})
 
 target_link_libraries(Portfolio PUBLIC stdc++ jsoncpp)

src/CMakeLists.txt

@@ -0,0 +1,3 @@
+
+file(GLOB SOURCES src/*.cpp)
+

src/main.cpp

@@ -1,5 +1,5 @@
 
-#include "../cpp-httplib/httplib.h"
+#include "cpp-httplib/httplib.h"
 
 #include "files.hpp"
 #include "contact.hpp"