[flang-commits] [flang] [llvm] [flang/flang-rt] Add -isysroot flag only to tests really requiring (PR #152914)

[Tarun Prabhu via flang-commits]

================
@@ -172,6 +172,13 @@
 else:
     llvm_config.add_tool_substitutions(tools, config.llvm_tools_dir)
 
+llvm_config.use_clang(required=False)
+
+# Include path for C headers that define Flang's Fortran ABI.
+config.substitutions.append(
+    ("%include", os.path.join(config.flang_source_dir, "include"))
+)
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tarunprabhu wrote:

I assume that this is for `ISO_fortran_binding.h`. Does this get copied into the build directory during compilation? If so, it may be better to include the file from the build directory instead of the source directory. 

https://github.com/llvm/llvm-project/pull/152914