Update CMakeLists.txt.

Author: HackTheOxidation

CMakeLists.txt

@@ -1,15 +1,35 @@
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.20)
 
 project(OS2DSRules VERSION 0.0.1)
 
-set(CMAKE_CXX_STANDARD 20)
-set(CMAKE_CXX_STANDARD_REQUIRED True)
+# Detect available compiler on the host system.
+set(gcc_like_cxx "$<COMPILE_LANG_AND_ID:CXX,ARMClang,AppleClang,Clang,GNU,LCC>")
+set(msvc_cxx "$<COMPILE_LANG_AND_ID:CXX,MSVC>")
 
+# Define C++ standard and compiler flags as a target library.
+add_library(os2dsrules_compiler_flags INTERFACE)
+target_compile_features(os2dsrules_compiler_flags INTERFACE cxx_std_20)
+# Build flags.
+target_compile_options(os2dsrules_compiler_flags INTERFACE
+  "$<${gcc_like_cxx}:-Wall;-Wextra;-Wshadow;-Wformat=2;-Wunused;-Wconversion;-Wpedantic;-Werror;-O3>"
+  "$<${msvc_cxx}:-W3>"						
+)
+
+# Compile as a shared library.
 add_library(os2dsrules SHARED lib/cpr-detector.cpp)
 include_directories(os2dsrules include)
+target_link_libraries(os2dsrules PUBLIC os2dsrules_compiler_flags)
 
-add_executable(test tests/test.cpp)
-target_include_directories(test PUBLIC "${PROJECT_BINARY_DIR}" "${PROJECT_SOURCE_DIR/include}")
-target_link_libraries(test os2dsrules)
+# Compile test suite.
+enable_testing()
+add_executable(testsuite tests/test.cpp)
+target_include_directories(testsuite PUBLIC "${PROJECT_BINARY_DIR}" "${PROJECT_SOURCE_DIR/include}")
+target_link_libraries(testsuite os2dsrules os2dsrules_compiler_flags)
+add_test(unittests testsuite)
 
+# Install library on system.
+set(installable_libs os2dsrules os2dsrules_compiler_flags)
+install(TARGETS ${installable_libs} DESTINATION lib)
 
+# Install header files on system.
+install(FILES include/os2dsrules.hpp include/cpr-detector.hpp DESTINATION include)