flang cannot be built with exceptions enabled. Doing so results in a link-time
error.
This addresses issue #59353 [https://github.com/llvm/llvm-project/issues/59353]
Differential Revision: https://reviews.llvm.org/D146173
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_EXTENSIONS OFF)
+if (LLVM_ENABLE_EH)
+ # To match with the flang guidelines we currently disable
+ # building with exception support in core LLVM.
+ message(FATAL_ERROR "Flang does not currently support building with \
+ LLVM exceptions enabled. Please disable LLVM_ENABLE_EH when building \
+ flang.")
+endif()
+
set(FLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE)