================
@@ -0,0 +1,97 @@
+# check if we have the right linker flags to enable Arm64X
+include(CheckLinkerFlag)
+check_linker_flag(CXX "LINKER:/linkreprofullpathrsp:test_rsp"
LIBOMP_HAVE_LINKREPROFULLPATHRSP_FLAG)
+if(NOT LIBOMP_HAVE_LINKREPROFULLPATHRSP_FLAG)
+ message(FATAL_ERROR "Arm64X builds are enabled but the linker does not
support the required flag. "
+ "Either update Visual Studio if using link.exe or add lld to
LLVM_ENABLE_PROJECTS to use a newer lld.")
+endif()
+
+# directory where the link.rsp file generated during arm64 build will be stored
+set(arm64ReproDir "${LLVM_BINARY_DIR}/runtimes/repros-arm64ec")
+
+# Don't install the runtime if we are doing an arm64ec build for arm64x.
+# The hybrid arm64x runtime will get installed by the host (default) runtime
build
+if (LIBOMP_ARCH STREQUAL "arm64ec")
+ set(CMAKE_SKIP_INSTALL_RULES On)
+endif()
+
+# This function reads in the content of the rsp file outputted from the
arm64ec build for a target,
+# then passes the arm64ec libs and objs to the linker using /machine:arm64x to
combine them with the
+# arm64 counterparts and create an arm64x binary.
+function(set_arm64ec_dll_dependencies target)
+ set(REPRO_FILE "${arm64ReproDir}/${target}.rsp")
+ file(STRINGS "${REPRO_FILE}" ARM64_OBJS REGEX obj\"$)
+ file(STRINGS "${REPRO_FILE}" ARM64_LIBS REGEX lib\"$)
+ string(REPLACE "\"" ";" ARM64_OBJS "${ARM64_OBJS}")
+ string(REPLACE "\"" ";" ARM64_LIBS "${ARM64_LIBS}")
+
+ get_target_property(libs "${target}" LINK_FLAGS)
+ set(non_def "")
+
+ # Separate out the /def flag from the other link flags, so we can replcae it
with /defArm64Native.
+ foreach(lib ${libs})
+ if(lib MATCHES ".*\.def")
+ string(REPLACE "/DEF:" "" def ${lib})
----------------
Meinersbur wrote:
```suggestion
string(REPLACE "/DEF:" "" "def" "${lib}")
```
https://github.com/llvm/llvm-project/pull/176157
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