build: workaround for clang crash

MultiFilt_next_kk crashes in the clang slp vectorizer, so disable for this file. I tried various re-arrangements of the operations in the LOOP blocks of that function, but none prevented the crash.
supercollider · Mar 29, 2015 · 4af0ff6 · 4af0ff6
1 parent 60bd231
commit 4af0ff6
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
@@ -124,6 +124,12 @@ set(PLUGIN_DIRS_EXTRA
     TJUGens
 )
 
+if (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang" AND ${CMAKE_CXX_COMPILER_VERSION} MATCHES "6.0.0.6000056")
+  set(BHOBFILT_CPP "${CMAKE_CURRENT_SOURCE_DIR}/BhobUGens/BhobFilt.cpp")
+  message(STATUS "Skipping vectorization on BhobFilt.cpp because of Clang bug. (${BHOBFILT_CPP})")
+  SET_SOURCE_FILES_PROPERTIES(${BHOBFILT_CPP} PROPERTIES COMPILE_FLAGS "-fno-slp-vectorize")
+endif()
+
 set(plugins "")
 set(supernova_plugins "")