Update tryrun.cmake in order to be able to build corefx in consolidat…

…ed repo (dotnet/coreclr#27674)

Commit migrated from dotnet/coreclr@10bcb6f

docs/coreclr/building/testing-with-corefx.md

@@ -111,11 +111,6 @@ After the tests are copied to the remote machine, you want to run them. Use one
 [tests\scripts\run-corefx-tests.sh](https://github.com/dotnet/coreclr/blob/master/tests/scripts/run-corefx-tests.sh)
 to run all the tests (consult the scripts for proper usage). Or, run a single test as described below.
 
-## Other corefx build considerations
-
-To build for Linux arm32, you need to make sure to build using clang 5 (the default is clang 3.9).
-You might need to pass `/p:BuildNativeCompiler=--clang5.0` to the corefx build scripts.
-
 ## Running a single CoreFX test assembly
 
 Once you've built the CoreFX tests (possibly with replaced CoreCLR bits), you can also run just a single test. E.g.,

src/coreclr/cross/tryrun.cmake

@@ -21,6 +21,7 @@ if(TARGET_ARCH_NAME MATCHES "^(armel|arm|arm64|x86)$")
   set_cache_value(HAVE_CLOCK_MONOTONIC_COARSE_EXITCODE 0)
   set_cache_value(HAVE_CLOCK_MONOTONIC_EXITCODE 0)
   set_cache_value(HAVE_CLOCK_THREAD_CPUTIME_EXITCODE 0)
+  set_cache_value(HAVE_CLOCK_REALTIME_EXITCODE 0)
   set_cache_value(HAVE_COMPATIBLE_ACOS_EXITCODE 0)
   set_cache_value(HAVE_COMPATIBLE_ASIN_EXITCODE 0)
   set_cache_value(HAVE_COMPATIBLE_ATAN2_EXITCODE 0)
@@ -48,10 +49,12 @@ if(TARGET_ARCH_NAME MATCHES "^(armel|arm|arm64|x86)$")
 
 
   if(ALPINE_LINUX)
+    set_cache_value(HAVE_SHM_OPEN_THAT_WORKS_WELL_ENOUGH_WITH_MMAP_EXITCODE 1)
     set_cache_value(SSCANF_CANNOT_HANDLE_MISSING_EXPONENT_EXITCODE 0)
     set_cache_value(SSCANF_SUPPORT_ll_EXITCODE 1)
     set_cache_value(UNGETC_NOT_RETURN_EOF_EXITCODE 1)
   else()
+    set_cache_value(HAVE_SHM_OPEN_THAT_WORKS_WELL_ENOUGH_WITH_MMAP_EXITCODE 0)
     set_cache_value(SSCANF_CANNOT_HANDLE_MISSING_EXPONENT_EXITCODE 1)
     set_cache_value(SSCANF_SUPPORT_ll_EXITCODE 0)
     set_cache_value(UNGETC_NOT_RETURN_EOF_EXITCODE 0)