libclc: Add -cl-no-stdinc to clang flags on clang >=13
cf3ef15a6ec5e5b45c6c54e8fbe3769255e815ce ("[OpenCL] Add builtin
declarations by default.")
switched behaviour to include "opencl-c-base.h". We don't want or need
that for libclc so pass the flag to revert to old behaviour.
Fixes build since cf3ef15a6ec5e5b45c6c54e8fbe3769255e815ce
Reviewed By: tstellar
Differential Revision: https://reviews.llvm.org/D99794
GitOrigin-RevId: ea469b08b847cef5f4c8187228f1e4bbf881706a
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f8d81e..ec39ea6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -124,7 +124,6 @@
set( CMAKE_LLAsm_PREPROCESSOR ${LLVM_CLANG} )
set( CMAKE_LLAsm_COMPILER ${LLVM_AS} )
set( CMAKE_LLAsm_ARCHIVE ${LLVM_LINK} )
-enable_language( CLC LLAsm )
# Construct LLVM version define
string( REPLACE "." ";" LLVM_VERSION_LIST ${LLVM_VERSION} )
@@ -132,6 +131,15 @@
list( GET LLVM_VERSION_LIST 1 LLVM_MINOR )
set( LLVM_VERSION_DEFINE "-DHAVE_LLVM=0x${LLVM_MAJOR}0${LLVM_MINOR}" )
+
+# LLVM 13 enables standard includes by default
+if( ${LLVM_VERSION} VERSION_GREATER "12.99.99" )
+ set( CMAKE_LLAsm_FLAGS ${CMAKE_LLAsm_FLAGS} -cl-no-stdinc )
+ set( CMAKE_CLC_FLAGS ${CMAKE_CLC_FLAGS} -cl-no-stdinc )
+endif()
+
+enable_language( CLC LLAsm )
+
# This needs to be set before any target that needs it
link_directories( ${LLVM_LIBDIR} )
