commit 7723d9a1555143c1ccf0d62710a56f6ded4ebc33
author Niranjan Nilakantan <niranjan.nilakantan@hotmail.com> Thu May 18 18:26:15 2023 -0700
committer Niranjan Nilakantan <niranjan.nilakantan@hotmail.com> Mon May 22 14:43:35 2023 -0700
tree 09b26b1e4866656034ec12f6255d217b3ea4e704
parent 051aa9805f28cf156d232b6319f09da4d5b5cb3e

Clone the Clang flags section for IntelLLVM.

This uses the same flags that Clang based builds use for Windows/Linux.

A future change will add floating point related flags and some warning
suppressions.  So, we clone the section rather than just change the check
at line 77.

Fixes #1450

absl/copts/AbseilConfigureCopts.cmake

diff --git a/absl/copts/AbseilConfigureCopts.cmake b/absl/copts/AbseilConfigureCopts.cmake
index 8209b26..3f737c8 100644
--- a/absl/copts/AbseilConfigureCopts.cmake
+++ b/absl/copts/AbseilConfigureCopts.cmake
@@ -83,6 +83,16 @@
     set(ABSL_DEFAULT_COPTS "${ABSL_LLVM_FLAGS}")
     set(ABSL_TEST_COPTS "${ABSL_LLVM_TEST_FLAGS}")
   endif()
+elseif(CMAKE_CXX_COMPILER_ID STREQUAL "IntelLLVM")
+  # IntelLLVM is similar to Clang, with some additional flags.
+  if(MSVC)
+    # clang-cl is half MSVC, half LLVM
+    set(ABSL_DEFAULT_COPTS "${ABSL_CLANG_CL_FLAGS}")
+    set(ABSL_TEST_COPTS "${ABSL_CLANG_CL_TEST_FLAGS}")
+  else()
+    set(ABSL_DEFAULT_COPTS "${ABSL_LLVM_FLAGS}")
+    set(ABSL_TEST_COPTS "${ABSL_LLVM_TEST_FLAGS}")
+  endif()
 elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
   set(ABSL_DEFAULT_COPTS "${ABSL_MSVC_FLAGS}")
   set(ABSL_TEST_COPTS "${ABSL_MSVC_TEST_FLAGS}")