[hit] Workaround for %cc and %cxx mappings. (#1233)

* [hit] Workaround for %cc and %cxx mappings.

HIP CMakeLists.txt modifies CMAKE_C_COMPILER and CMAKE_CXX_COMPILER.
This messes up any dtests that want to test against cc/c++.

So hardcode %cc to /usr/bin/cc and %cxx to /usr/bin/c++ for now till
we come up with a better solution.

Change-Id: I7dce93ce8360191e612a94e3a735e5612ac27ab5

* [hit] Add auto-variable %hip-path to syntax for BUILD_CMD

Change-Id: Id097a183fbce2b2c9691d0180d3304dd17a4e016

tests/README.md

@@ -66,7 +66,9 @@ BUILD_CMD: <targetname> <build_command> EXCLUDE_HIP_PLATFORM <hcc|nvcc|all>
 %s: refers to current source file name. Additional source files needed for the test can be specified by name (including relative path).
 %t: refers to target executable named derived by removing the extension from the current source file. Alternatively a target executable name can be specified.
 %hc: refers to hipcc pointed to by $CMAKE_INSTALL_PREFIX/bin/hipcc.
-%cc: refers to system c compiler pointed to by $CC.
+%hip-path: refers to hip installed location pointed to by $CMAKE_INSTALL_PREFIX
+%cc: refers to system c compiler pointed to by /usr/bin/cc.
+%cxx: refers to system c compiler pointed to by /usr/bin/c++.
 %S: refers to path to current source file.
 %T: refers to path to current build target.
 

tests/hit/HIT.cmake

@@ -201,7 +201,9 @@ macro(HIT_ADD_FILES _dir _label _parent)
             OUTPUT_STRIP_TRAILING_WHITESPACE)
         string(REGEX REPLACE "\n" ";" _contents "${_contents}")
         string(REGEX REPLACE "%hc" "${HIP_HIPCC_EXECUTABLE}" _contents "${_contents}")
-        string(REGEX REPLACE "%cc" "${CC}" _contents "${_contents}")
+        string(REGEX REPLACE "%hip-path" "${HIP_ROOT_DIR}" _contents "${_contents}")
+        string(REGEX REPLACE "%cc" "/usr/bin/cc" _contents "${_contents}")
+        string(REGEX REPLACE "%cxx" "/usr/bin/c++" _contents "${_contents}")
         string(REGEX REPLACE "%S" ${_dir} _contents "${_contents}")
         string(REGEX REPLACE "%T" ${_label} _contents "${_contents}")
         foreach(_cmd ${_contents})

tests/hit/parser

@@ -46,7 +46,8 @@ sub parse_file {
                 $line =~ s/^ \* BUILD_CMD: //g; # Remove " * BUILD_CMD: "
                 $line =~ s/%s/$file/g;          # Substitute %s -> filename
                 $line =~ s/%t/$exe/g;           # Substitute %t -> targetname
-                # Substitute %hc -> /path/to/hipcc and %cc -> /path/to/cc happens in cmake
+                # Substitute %hc -> /path/to/hipcc and %hip-path -> /path/to/hip happens in cmake
+                # Substitute %cc -> /usr/bin/cc and %cxx -> /usr/bin/c++ happens in cmake
                 # Substitute %S -> src dir and %T -> target build dir happens in cmake
                 $line =~ s/\R//g;               # Remove line endings
                 push @customBuildCMDs, $line;