diff --git a/Build.md b/Build.md
index 707e9cd..c467210 100644
--- a/Build.md
+++ b/Build.md
@@ -17,7 +17,11 @@ directory. Then, create a build directory which will contain all files
 related to the build. Enter the build directory.
 
 From inside the build directory, we can then configure the project with the
-following command: `cmake ..`
+following command:
+
+```
+$ cmake .. -DCMAKE_INSTALL_PREFIX=release -DCMAKE_EXPORT_COMPILE_COMMANDS=YES
+```
 
 [**Windows**] On Windows you have to explicitly tell CMake to target 64-bit
 architecture by adding the `-DCMAKE_GENERATOR_PLATFORM=x64` option to the
@@ -48,10 +52,12 @@ ccls. Debug is recommended when debugging cquery with a debugger. Since cquery
 defaults to a Release build it usually isn't necessary to define this option
 unless you're debugging an issue in ccls with a debugger.
 
-* `-DSYSTEM_LIBCLANG=(ON|OFF)`
+* `-DSYSTEM_CLANG=(ON|OFF)`
 
-Enable `SYSTEM_LIBCLANG` if you want to link ccls against a system installation 
-of libclang instead of downloading libclang during the configure process.
+Enable `SYSTEM_CLANG` if you want to link ccls against a system installation
+of Clang instead of downloading Clang during the configure process.
+
+Example: `cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DSYSTEM_CLANG=On -Brelease -H. && cmake --build release`
 
 * `-DCMAKE_PREFIX_PATH="custom_install_path"`
 
@@ -71,9 +77,9 @@ You may add directories for `include` and `lib` separated by a `;`, e.g. to use
 If using Windows the automatically downloaded LLVM binaries are 64-bit; you should build cquery in 64-bit as well. You can tell cmake to build 64-bit using `-DCMAKE_GENERATOR_PLATFORM=x64`
 
 
-MaskRay's config:
+MaskRay's config (building trunk LLVM at ~/Dev/llvm/static-release/ to get read/write/addr references and other features):
 ```zsh
-cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_LINKER=ld.lld -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DSYSTEM_LIBCLANG=On -DCMAKE_PREFIX_PATH="$HOME/Dev/llvm/static-release;$HOME/Dev/llvm/tools/clang" -Brelease -H.
+cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_LINKER=ld.lld -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DSYSTEM_CLANG=On -DCMAKE_PREFIX_PATH="$HOME/Dev/llvm/static-release;$HOME/Dev/llvm/tools/clang" -Brelease -H.
 cmake --build release
 ```