Add CMakeLists.txt

This commit adds CMakeLists.txt, allowing users to build libcsp
against FreeRTOS with CMake. Unlike Meson, CMake doesn't enforce
placing libcsp under subprojects/. However, this CMakeLists.txt
assumes that you have it there. This is done to align with the setup
in meson.build, not due to a limitation in CMake.

Signed-off-by: Yasushi SHOJI <[email protected]>

Author: yashi

CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.20)
+project(libcsp-freertos)
+
+add_executable(demo)
+target_sources(demo PRIVATE
+  main.c
+  hooks.c
+  freertos/list.c
+  freertos/queue.c
+  freertos/tasks.c
+  freertos/timers.c
+  freertos/portable/ThirdParty/GCC/Posix/port.c
+  freertos/portable/ThirdParty/GCC/Posix/utils/wait_for_event.c)
+target_include_directories(demo PRIVATE
+  .
+  freertos/include
+  freertos/portable/ThirdParty/GCC/Posix)
+target_link_libraries(demo PRIVATE csp)
+
+add_subdirectory(subprojects/libcsp)

README.md

@@ -5,6 +5,8 @@ FreeRTOS Posix/Linux Simulator.
 
 # How to build
 
+## With Meson
+
 ```
 git clone https://github.com/libcsp/libcsp-freertos
 cd libcsp-freertos
@@ -14,3 +16,15 @@ git clone https://github.com/libcsp/libcsp subprojects/libcsp
 meson setup builddir
 ninja -C builddir
 ```
+
+## With CMake
+
+```
+git clone https://github.com/libcsp/libcsp-freertos
+cd libcsp-freertos
+git clone https://github.com/FreeRTOS/FreeRTOS-Kernel freertos
+mkdir subprojects
+git clone https://github.com/libcsp/libcsp subprojects/libcsp
+cmake -B builddir -GNinja
+ninja -C builddir
+```