Ability to select alternative compiler per file (#1086)

[ROCm/rocprofiler-sdk commit: cc1498bb3b]

projects/rocprofiler-sdk/cmake/Modules/rocprofiler-sdk-custom-compilation.cmake

@@ -0,0 +1,90 @@
+#
+#   Custom compilation of source code
+#
+
+include_guard(GLOBAL)
+
+# ----------------------------------------------------------------------------------------#
+# this provides a function to easily select which files use alternative compiler:
+#
+# * GLOBAL      --> all files
+# * TARGET      --> all files in a target
+# * SOURCE      --> specific source files
+# * DIRECTORY   --> all files in directory
+# * PROJECT     --> all files/targets in a project/subproject
+#
+function(rocprofiler_sdk_custom_compilation)
+    cmake_parse_arguments(COMP "GLOBAL;PROJECT" "COMPILER" "DIRECTORY;TARGET;SOURCE"
+                          ${ARGN})
+
+    # find rocprofiler-sdk-launch-compiler
+    find_program(
+        ROCPROFILER_SDK_COMPILE_LAUNCHER
+        NAMES rocprofiler-sdk-launch-compiler
+        HINTS ${rocprofiler-sdk_ROOT_DIR} ${PROJECT_BINARY_DIR} ${CMAKE_BINARY_DIR}
+        PATHS ${rocprofiler-sdk_ROOT_DIR} ${PROJECT_BINARY_DIR} ${CMAKE_BINARY_DIR}
+        PATH_SUFFIXES sbin)
+
+    if(NOT COMP_COMPILER)
+        message(
+            FATAL_ERROR
+                "rocprofiler_sdk_custom_compilation not provided COMPILER argument")
+    elseif(NOT EXISTS "${COMP_COMPILER}")
+        cmake_path(GET COMP_COMPILER FILENAME COMP_COMPILER_BASE)
+        find_program(
+            ROCPROFILER_SDK_COMPILER_${COMP_COMPILER_BASE}
+            NAMES ${COMP_COMPILER_BASE}
+            PATH_SUFFIXES bin REQUIRED)
+        set(COMP_COMPILER ROCPROFILER_SDK_COMPILER_${COMP_COMPILER_BASE})
+    endif()
+
+    if(NOT ROCPROFILER_SDK_COMPILE_LAUNCHER)
+        message(
+            FATAL_ERROR
+                "rocprofiler-sdk could not find 'rocprofiler-sdk-launch-compiler'. Please set '-DROCPROFILER_SDK_COMPILE_LAUNCHER=/path/to/launcher'"
+            )
+    endif()
+
+    if(COMP_GLOBAL)
+        # if global, don't bother setting others
+        set_property(
+            GLOBAL
+            PROPERTY
+                RULE_LAUNCH_COMPILE
+                "${ROCPROFILER_SDK_COMPILE_LAUNCHER} ${COMP_COMPILER} ${CMAKE_CXX_COMPILER}"
+            )
+        set_property(
+            GLOBAL
+            PROPERTY
+                RULE_LAUNCH_LINK
+                "${ROCPROFILER_SDK_COMPILE_LAUNCHER} ${COMP_COMPILER} ${CMAKE_CXX_COMPILER}"
+            )
+    else()
+        foreach(_TYPE PROJECT DIRECTORY TARGET SOURCE)
+            # make project/subproject scoping easy, e.g.
+            # rocprofiler_sdk_custom_compilation(PROJECT) after project(...)
+            if("${_TYPE}" STREQUAL "PROJECT" AND COMP_${_TYPE})
+                list(APPEND COMP_DIRECTORY ${PROJECT_SOURCE_DIR})
+                unset(COMP_${_TYPE})
+            endif()
+
+            # set the properties if defined
+            if(COMP_${_TYPE})
+                foreach(_VAL ${COMP_${_TYPE}})
+                    set_property(
+                        ${_TYPE} ${_VAL}
+                        PROPERTY
+                            RULE_LAUNCH_COMPILE
+                            "${ROCPROFILER_SDK_COMPILE_LAUNCHER} ${COMP_COMPILER} ${CMAKE_CXX_COMPILER}"
+                        )
+                    set_property(
+                        ${_TYPE} ${_VAL}
+                        PROPERTY
+                            RULE_LAUNCH_LINK
+                            "${ROCPROFILER_SDK_COMPILE_LAUNCHER} ${COMP_COMPILER} ${CMAKE_CXX_COMPILER}"
+                        )
+                endforeach()
+            endif()
+        endforeach()
+    endif()
+endfunction()