Building-MFIX-with-CSG-EB-on-Spock.md

-Spock compiler may required building MFIX and CSG-EB Conan package with different compilers.
+# Background
 
-# Check conan packages [optional]
+The Cray compiler on Spock is based on Clang and uses the `hipcc` compiler wrapper.
+
+# Problem
+
+Building MFIX on Spock with the Cray compiler and CSG-EB support enabled has problems, because:
+
+- Building with the compiler `CXX=hipcc` fails to build.
+- Building with the compiler `CXX=$ROCM_PATH/llvm/bin/clang` builds successfully, but the resulting executable crashes.
+
+
+# Procedure
+
+The following steps are intended to work around these difficulties.
+
+## Check conan packages [optional]
 
 You can check which Conan packages are installed with the command, which looks something like:
 
@@ -29,13 +43,13 @@ zlib/1.2.11
 
 first to see which conan packages are already built (and cached) on your system
 
-# Build Conan CSG-EB package
+## Build Conan CSG-EB package
 
 ```
 cd subprojects/csg-eb
 env CC=$ROCM_PATH/llvm/bin/clang CXX=$ROCM_PATH/llvm/bin/clang++ conan create .
 ```
-# Check conan packages [optional]
+## Check conan packages [optional]
 
 You can check which Conan packages are installed with the command, which looks something like:
 
@@ -63,7 +77,7 @@ zlib/1.2.11
 ```
 
 
-# Build MFIX
+## Build MFIX
 
 ```
 ❯ mkdir builddir; cd builddir