Making it a header-only library

CMakeLists.txt

@@ -7,7 +7,18 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # Library target
-add_subdirectory(src)
+add_library(
+  ${PROJECT_NAME}
+  INTERFACE
+)
+
+target_include_directories(
+  ${PROJECT_NAME}
+  INTERFACE
+  "$<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}/include>"
+  "$<INSTALL_INTERFACE:include>"
+)
+
 
 # Optional builds
 option(BUILD_EXAMPLES "Build examples" ON)

examples/example1.cpp

@@ -1,8 +1,8 @@
 #include <iostream>
-
-#include "kiwicpp/library.hpp"
+#include <kiwicpp/kiwicpp.hpp>
+using namespace kiwicpp;
 
 int main() {
-  std::cout << "Sum: " << KiwiCPP::add(2, 3) << std::endl;
+  std::cout << "Sum: " << add(2, 3) << std::endl;
   return 0;
-}
+}

include/kiwicpp/kiwicpp.hpp

@@ -0,0 +1,3 @@
+#pragma once
+
+#include <kiwicpp/math.hpp>

include/kiwicpp/math.hpp

@@ -0,0 +1,5 @@
+#pragma once
+
+namespace kiwicpp {
+inline int add(int a, int b) { return a + b; }
+}  // namespace kiwicpp

tests/test_library.cpp

@@ -1,11 +1,12 @@
 #include <gtest/gtest.h>
 
-#include "../include/kiwicpp/library.hpp"
+#include <kiwicpp/kiwicpp.hpp>
+using namespace kiwicpp;
 
 TEST(LibraryTest, Add) {
   // Consider adding more test cases
-  EXPECT_EQ(KiwiCPP::add(2, 3), 5);
-  EXPECT_EQ(KiwiCPP::add(-1, 1), 0);
-  EXPECT_EQ(KiwiCPP::add(0, 0), 0);
-  EXPECT_EQ(KiwiCPP::add(-2, -3), -5);
+  EXPECT_EQ(add(2, 3), 5);
+  EXPECT_EQ(add(-1, 1), 0);
+  EXPECT_EQ(add(0, 0), 0);
+  EXPECT_EQ(add(-2, -3), -5);
 }