Updated Generating Test Coverage Statistics (markdown)

Generating-Test-Coverage-Statistics.md

@@ -2,17 +2,21 @@
 Please follow either the [Linux](Set-up-Build-Environment-on-Linux), [OS X](Set-up-Build-Environment-on-OS-X), or [Windows](Set-up-Build-Environment-on-Windows) guides to setup your environment.
 
 ### Prerequisites
-Obtain the following packages prior to beginning the coverage process: **gcov** and **lcov**
+With `gcc` as your compiler, install `gcovr` to generate coverage profiles:
 
-**Ubuntu Linux:** ```sudo apt install gcovr lcov```
+- **Ubuntu Linux:** ```sudo apt install gcovr```
+- **MSYS2:** ```pacman -Su python3-pip && pip3 install gcovr```
+- **macOS:** ```brew install gcovr```
 
-**MSYS2:** ```pacman -Su mingw-w64-x86_64-lcov python3-pip && pip3 install gcovr```
+With `clang`, you need `llvm` installed:
 
-**macOS:** ```brew install gcovr lcov```
+- **Ubuntu Linux:** ```sudo apt install llvm```
+- **MSYS2:** ```pacman -Su mingw-w64-x86_64-llvm```
+- **macOS:** ```xcode-select —install``` (should already be done if you have `clang` installed)
 
 ### Build Process
 
 1. Make a build directory for cmake and enter it
 2. ```cmake -DCMAKE_BUILD_TYPE=Debug -DWITH_COVERAGE=ON -DWITH_TESTS=ON -DWITH_GUI_TESTS=ON -DWITH_XC_ALL=ON ..```
-3. `make coverage -j4`
+3. `make -j4 && make coverage`
 4. Open up **./coverage/index.html** to view the coverage report