Merge 9ccbbff0d7 into ce6b7852b7

.gitignore

@@ -1,3 +0,0 @@
-# Ignore content built with CMake
-build/
-

.gitpod.yml

@@ -2,11 +2,8 @@ image:
   file: Dockerfile
 tasks:
 - command: >
-    mkdir --parents build &&
-    cd build &&
-    cmake .. &&
-    make &&
-    ./tinyraytracer &&
+    cmake -Bbuild &&
+    cmake --build build &&
+    build/tinyraytracer &&
     pnmtopng out.ppm > out.png &&
-    open out.png &&
-    cd ..
+    open out.png

CMakeLists.txt

@@ -1,20 +1,22 @@
-cmake_minimum_required (VERSION 2.8)
-project(tinyraytracer)
+cmake_minimum_required (VERSION 3.10...3.26)
+
+get_property(is_multi_config GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+if(NOT is_multi_config AND NOT (CMAKE_BUILD_TYPE OR DEFINED ENV{CMAKE_BUILD_TYPE}))
+  set(CMAKE_BUILD_TYPE Release CACHE STRING "Release default")
+endif()
+
+project(tinyraytracer LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-find_package(OpenMP)
-if(OPENMP_FOUND)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
-  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU|Intel")
+  add_compile_options(-Wall)
 endif()
 
-if(NOT CMAKE_BUILD_TYPE)
-  set(CMAKE_BUILD_TYPE Release)
-endif()
+find_package(OpenMP COMPONENTS CXX)
 
-file(GLOB SOURCES *.h *.cpp)
-add_executable(${PROJECT_NAME} ${SOURCES})
+add_executable(${PROJECT_NAME} tinyraytracer.cpp)
+target_link_libraries(${PROJECT_NAME} PRIVATE $<$<BOOL:${OpenMP_CXX_FOUND}>:OpenMP::OpenMP_CXX>)
 
+file(GENERATE OUTPUT .gitignore CONTENT "*")

Readme.md

@@ -11,10 +11,8 @@ In my lectures I tend to avoid third party libraries as long as it is reasonable
 ```sh
 git clone https://github.com/ssloy/tinyraytracer.git
 cd tinyraytracer
-mkdir build
-cd build
-cmake ..
-make
+cmake -B build
+cmake --build build
 ```
 
 You can open the project in Gitpod, a free online dev evironment for GitHub: