[libc-commits] [libc] [libc] Add ${CMAKE_CROSSCOMPILING_EMULATOR} to custom test cmdlines (PR #66565)

[Joseph Huber via libc-commits]

================
@@ -561,7 +561,7 @@ function(add_integration_test test_name)
   # to expand the list (by including the option COMMAND_EXPAND_LISTS). This
   # makes `add_custom_target` construct the correct command and execute it.
   set(test_cmd
-      ${INTEGRATION_TEST_ENV}
+      ${CMAKE_CROSSCOMPILING_EMULATOR} ${INTEGRATION_TEST_ENV}
----------------
jhuber6 wrote:

We do the following for the GPU build.
```shell
$> clang main.c --target=amdgcn-amd-amdhsa -mcpu=gfx1030 crt1.o -lc -o exe
$> ./emulator <optional arguments> exe
```
This looks very similar to cross-compiling by design. I'm thinking it would be good to unify this approach.

https://github.com/llvm/llvm-project/pull/66565