feat: compile on linux

CMakeLists.txt

@@ -10,7 +10,11 @@ if(WIN32)
 
     # OpenGL
     find_package(OpenGL REQUIRED)
-elseif(UNIX OR APPLE)
+elseif(UNIX)
+    find_package(PkgConfig REQUIRED)
+    pkg_search_module(GLFW REQUIRED glfw3)
+    find_package(OpenGL REQUIRED)
+elseif(APPLE)
     message(FATAL_ERROR "Linux and macOS platforms are not supported yet.")
 endif()
 
@@ -19,4 +23,8 @@ add_executable(${PROJECT_NAME} hello.cpp)
 if(WIN32)
     target_link_libraries(${PROJECT_NAME} glfw3)
     target_link_libraries(${PROJECT_NAME} OpenGL::GL)
-endif()
+elseif(UNIX)
+    include_directories(${GLFW_INCLUDE_DIRS})
+    target_link_libraries(${PROJECT_NAME} ${GLFW_LIBRARIES})
+    target_link_libraries(${PROJECT_NAME} OpenGL::GL)
+endif()

hello.cpp

@@ -1,5 +1,11 @@
 // To compile on Windows
 
+// Install GLFW 3.3.8
+// https://www.glfw.org/download.html
+// On Windows:
+// extract the downloaded .zip file to "C:/libs"; this is currently expected
+// by our CMakeLists.txt.
+
 // Install CMake
 // https://cmake.org/download
 // Add to PATH for all users
@@ -11,17 +17,21 @@
 // The last step compiles the executable - this can also be done from Visual
 // Studio
 
-// Install GLFW 3.3.8
-// https://www.glfw.org/download.html
-// On Windows:
-// extract the downloaded .zip file to "C:/libs"; this is currently expected
-// by our CMakeLists.txt.
-
 // To run in VS
 // Set startup project in Solution Explorer
+// Press F5 to run
+//
+// To compile on Arch Linux
+//
+// Install dependencies
+// sudo pacman -S glfw mesa
+//
+// Build
+// cmake ..
+// cmake --build .
 
 #include <GLFW/glfw3.h>
-#include <gl/GL.h>
+#include <GL/gl.h>
 
 int main()
 {
@@ -49,4 +59,4 @@ int main()
 
     glfwTerminate();
     return 0;
-}
+}