More diagnostics for how bitcode is being generated

Signed-off-by: Larry Gritz <[email protected]>
lgritz · Jan 11, 2025 · b1dfa3f · b1dfa3f
1 parent d1433af
commit b1dfa3f
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/src/cmake/llvm_macros.cmake b/src/cmake/llvm_macros.cmake
@@ -38,7 +38,12 @@ function ( EMBED_LLVM_BITCODE_IN_CPP src_list suffix output_name list_to_append_
         if (NOT LLVM_BC_GENERATOR)
             message (FATAL_ERROR "You must have a valid llvm bitcode generator (clang++) somewhere.")
         endif ()
-        message (VERBOSE "Using LLVM_BC_GENERATOR ${LLVM_BC_GENERATOR} to generate bitcode.")
+        if (LLVM_BC_GENERATOR)
+            execute_process ( COMMAND ${LLVM_BC_GENERATOR} --version
+                              OUTPUT_VARIABLE LLVM_BC_GENERATOR_VERSION
+                              OUTPUT_STRIP_TRAILING_WHITESPACE )
+        endif ()
+        message (VERBOSE "Using LLVM_BC_GENERATOR ${LLVM_BC_GENERATOR} v${LLVM_BC_GENERATOR_VERSION} to generate bitcode.")
 
         if (NOT LLVM_AS_TOOL)
             find_program (LLVM_AS_TOOL NAMES "llvm-as"
@@ -81,7 +86,7 @@ function ( EMBED_LLVM_BITCODE_IN_CPP src_list suffix output_name list_to_append_
         # Command to turn the .cpp file into LLVM assembly language .s, into
         # LLVM bitcode .bc, then back into a C++ file with the bc embedded!
         add_custom_command ( OUTPUT ${src_bc}
-        COMMAND echo
+        COMMAND echo "BITCODE GENERATION AND EMBEDDING COMMAND:"
             ${LLVM_COMPILE_FLAGS}
             ${ALL_INCLUDE_DIRS}
             -DOSL_COMPILING_TO_BITCODE=1