feat(ci): add codecov test coverage support to master branch

Add CodeCov test coverage configuration:
- Add LIBIPC_CODECOV option to CMakeLists.txt with coverage compilation flags
- Add CodeCov badge to README.md for coverage status display

Note: The codecov.yml workflow file needs to be added manually
or requires workflows permission to push.

CMakeLists.txt

@@ -5,6 +5,7 @@ option(LIBIPC_BUILD_TESTS       "Build all of libipc's own tests."
 option(LIBIPC_BUILD_DEMOS       "Build all of libipc's own demos."                      OFF)
 option(LIBIPC_BUILD_SHARED_LIBS "Build shared libraries (DLLs)."                        OFF)
 option(LIBIPC_USE_STATIC_CRT    "Set to ON to build with static CRT on Windows (/MT)."  OFF)
+option(LIBIPC_CODECOV           "Build with unit test coverage."                        OFF)
 
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_CXX_STANDARD 17)
@@ -13,6 +14,12 @@ if(NOT MSVC)
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
 endif()
 
+# Code coverage support
+if (LIBIPC_CODECOV AND NOT MSVC)
+    add_compile_options(--coverage)
+    add_link_options(-lgcov --coverage)
+endif()
+
 if (MSVC)
     set(CompilerFlags
         CMAKE_CXX_FLAGS

README.md

@@ -2,6 +2,7 @@
 
 [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/mutouyun/cpp-ipc/blob/master/LICENSE)
 [![Build Status](https://github.com/mutouyun/cpp-ipc/actions/workflows/c-cpp.yml/badge.svg)](https://github.com/mutouyun/cpp-ipc/actions)
+[![CodeCov](https://codecov.io/github/mutouyun/cpp-ipc/graph/badge.svg?token=MNOAOLNELH)](https://codecov.io/github/mutouyun/cpp-ipc)
 [![Build status](https://ci.appveyor.com/api/projects/status/github/mutouyun/cpp-ipc?branch=master&svg=true)](https://ci.appveyor.com/project/mutouyun/cpp-ipc)
 [![Vcpkg package](https://img.shields.io/badge/Vcpkg-package-blueviolet)](https://github.com/microsoft/vcpkg/tree/master/ports/cpp-ipc)