Updated to work with newer version of shaderc

README.md

@@ -6,3 +6,15 @@ echo deb https://apt.llvm.org/bullseye llvm-toolchain-bullseye-14 main >/etc/apt
 apt install llvm-14-tools clang build-essential cmake git \ 
     llvm-14-dev libboost-log-dev spirv-headers spirv-tools
 ```
+
+Clone the source, then in the source dir:
+
+```shell
+git submodule update --init vendor/shaderc
+vendor/shaderc/utils/git-sync-deps
+mkdir build
+cd build
+cmake -DCMAKE_BUILD_PROFILE=Release ..
+# Note: just running `make` will fail with a link error in render_stub.c; ignore this. 
+make bluebell
+```