copy missing cmake modules from vtr project

cmake/modules/AutoClangFormat.cmake

@@ -0,0 +1,46 @@
+include(ProcessorCount)
+ProcessorCount(CPU_COUNT)
+if(CPU_COUNT EQUAL 0)
+    message(FATAL_ERROR "Unknown number of CPUs!?")
+endif()
+
+#
+# ----------------------- Code format --------------------------
+#
+
+set(FIND_TO_FORMAT_CPP
+    -name '*.cpp' -print -o -name '*.h' -print
+    -o -name '*.tpp' -print -o -name '*.hpp' -print)
+
+list(APPEND DIRS_TO_FORMAT_CPP "")
+
+#
+# List the files which will be auto-formatted.
+#
+add_custom_target(format-cpp-files
+    COMMAND find ${DIRS_TO_FORMAT_CPP} ${FIND_TO_FORMAT_CPP})
+
+#
+# Use clang-format-7 for code format
+#
+add_custom_target(format-cpp
+    COMMAND find ${DIRS_TO_FORMAT_CPP} ${FIND_TO_FORMAT_CPP} |
+    xargs -P ${CPU_COUNT} clang-format-7 -style=file -i)
+
+#
+# Use simple python script for fixing C like boxed comments
+#
+add_custom_target(format-cpp-fix-comments DEPENDS format-cpp
+    COMMAND find ${DIRS_TO_FORMAT_CPP} ${FIND_TO_FORMAT_CPP} |
+        xargs -L 1 -P ${CPU_COUNT}
+        python3 ${PROJECT_SOURCE_DIR}/dev/code_format_fixup.py --inplace --fix-comments --input)
+
+#
+# Use simple python script for fixing template brackets e.g. <<>
+#
+add_custom_target(format-cpp-fix-template-operators DEPENDS format-cpp
+    COMMAND find ${DIRS_TO_FORMAT_CPP} ${FIND_TO_FORMAT_CPP} |
+        xargs -L 1 -P ${CPU_COUNT}
+        python3 ${PROJECT_SOURCE_DIR}/dev/code_format_fixup.py --inplace --fix-template-operators --input)
+
+add_custom_target(format DEPENDS format-cpp-fix-comments format-cpp-fix-template-operators)

cmake/modules/SupportCcache.cmake

@@ -0,0 +1,27 @@
+# Support ccache for faster builds.
+#
+# By default ccache will be used if it is found in your path.
+#
+# You can use `BUILD_USING_CCACHE=off` to disable it's usage.
+# You can use `BUILD_USING_CCACHE=off` to make sure ccache is used.
+#
+set(BUILD_USING_CCACHE "auto")
+if(NOT "$ENV{BUILD_USING_CCACHE}" STREQUAL "")
+    set(BUILD_USING_CCACHE $ENV{BUILD_USING_CCACHE})
+endif()
+find_program(CCACHE_PROGRAM ccache)
+if (BUILD_USING_CCACHE STREQUAL "on")
+    if(NOT CCACHE_PROGRAM)
+        message(FATAL_ERROR "BUILD_USING_CCACHE set to on but ccache binary not found!")
+    endif()
+endif()
+if (NOT BUILD_USING_CCACHE STREQUAL "off")
+    if(CCACHE_PROGRAM)
+        set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
+        message(STATUS "Using ccache binary found @ ${CCACHE_PROGRAM}")
+    endif()
+else()
+    if(CCACHE_PROGRAM)
+        message(STATUS "**Not** using ccache binary found @ ${CCACHE_PROGRAM} (as BUILD_USING_CCACHE is off)")
+    endif()
+endif()