Add CMakeLists.txt & Update README

CMakeLists.txt

@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(rustex LANGUAGES CXX VERSION 1.0.0 DESCRIPTION "Rust-style mutex type for C++" HOMEPAGE_URL "https://github.com/dragazo/rustex")
+
+include(GNUInstallDirs)
+
+string(REPLACE "/${CMAKE_LIBRARY_ARCHITECTURE}" "" CMAKE_INSTALL_LIBDIR_ARCHIND "${CMAKE_INSTALL_LIBDIR}")
+
+set(RUSTEX_MAIN_PROJECT OFF)
+if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    set(RUSTEX_MAIN_PROJECT ON)
+endif()
+
+option(RUSTEX_BUILD_TESTS "Build tests" ON)
+
+set(CMAKE_CONFIG_DEST "${CMAKE_INSTALL_LIBDIR_ARCHIND}/cmake/${PROJECT_NAME}")
+
+add_library(rustex INTERFACE)
+target_include_directories(rustex INTERFACE
+	$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>
+	$<INSTALL_INTERFACE:include>)
+
+if(RUSTEX_MAIN_PROJECT)
+    include(CMakePackageConfigHelpers)
+    install(FILES rustex.h DESTINATION include)
+    install(TARGETS rustex EXPORT rustex-targets)
+    install(EXPORT rustex-targets
+        FILE rustex-config.cmake
+        NAMESPACE rustex::
+        DESTINATION lib/cmake/rustex)
+
+    write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/rustex-config-version.cmake" COMPATIBILITY SameMajorVersion ARCH_INDEPENDENT)
+    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/rustex-config-version.cmake" DESTINATION lib/cmake/rustex)
+endif()
+
+if (RUSTEX_BUILD_TESTS)
+    add_executable(rustex_test test/test.cpp)
+    target_link_libraries(rustex_test rustex)
+    set_property(TARGET rustex_test PROPERTY CXX_STANDARD 17)
+endif()

README.md

@@ -36,7 +36,29 @@ void bar()
 }
 ```
 
-# Using rustex in your project
+# Adding rustex to your project
 
-`rustex` is a single-file header-only library for C++17.
-All you need to do for compilation is include `rustex.h`.
+## Simple
+
+1. Drop [rustex.h](https://raw.githubusercontent.com/dragazo/rustex/master/rustex.h) wherever you like in your source tree
+
+## CMake Classic
+
+```sh
+git clone https://github.com/dragazo/rustex.git
+mkdir -p rustex/build
+cd rustex/build
+cmake ..
+sudo make install
+```
+
+## CMake FetchContent
+
+```cmake
+include(FetchContent)
+FetchContent_Declare(
+    rustex
+    GIT_REPOSITORY https://github.com/dragazo/rustex.git
+)
+FetchContent_MakeAvailable(rustex)
+```