[llvm] [flang-rt][build] Add support for building flang-rt as a standalone project (PR #168321)

[Michael Kruse via llvm-commits]

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@@ -54,13 +54,16 @@ if (CMAKE_VERSION VERSION_LESS "3.24")
     set(CMAKE_Fortran_LINKER_WRAPPER_FLAG "-Wl,")
     set(CMAKE_Fortran_LINKER_WRAPPER_FLAG_SEP ",")
   endif ()
+else ()
+  set(CMAKE_Fortran_COMPILER_FORCED ON)
 endif ()
 enable_language(Fortran)
 
 
 list(APPEND CMAKE_MODULE_PATH
     "${FLANG_RT_SOURCE_DIR}/cmake/modules"
     "${FLANG_SOURCE_DIR}/cmake/modules"
+    "${FLANG_SOURCE_DIR}/../cmake/Modules"
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Meinersbur wrote:

This path is already inserted by https://github.com/llvm/llvm-project/blob/main/runtimes/CMakeLists.txt#L30

https://github.com/llvm/llvm-project/pull/168321