[build] Add clangformat target to cmake

- Added a new target "clangformat" which formats the code using the
  clang-format tool found in HCC package.
- Renamed target "static_check" to "cppcheck".
- Use find_program() macro to make the build system more robust.

Change-Id: Ifefbf36f23ff7ef27a870120d5b9170d0cc8aa52


[ROCm/hip commit: 1e559d19c3]

projects/hip/.clang-format

@@ -0,0 +1,20 @@
+---
+Language: Cpp
+BasedOnStyle: Google
+AlignEscapedNewlinesLeft: false
+ColumnLimit: 100
+DerivePointerAlignment: false
+IndentWrappedFunctionNames: false
+MaxEmptyLinesToKeep: 2
+SortIncludes: false
+IndentWidth: 4
+---
+Language: ObjC
+BasedOnStyle: Google
+AlignEscapedNewlinesLeft: false
+ColumnLimit: 100
+DerivePointerAlignment: false
+IndentWrappedFunctionNames: false
+MaxEmptyLinesToKeep: 2
+SortIncludes: false
+IndentWidth: 4

projects/hip/CMakeLists.txt

@@ -220,8 +220,11 @@ endif()
 file(WRITE "${PROJECT_BINARY_DIR}/.hipVersion" ${_versionInfo})
 
 # Build doxygen documentation
-add_custom_target(doc COMMAND HIP_PATH=${CMAKE_CURRENT_SOURCE_DIR} doxygen ${CMAKE_CURRENT_SOURCE_DIR}/docs/doxygen-input/doxy.cfg
-    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/docs)
+find_program(DOXYGEN_EXE doxygen)
+if(DOXYGEN_EXE)
+    add_custom_target(doc COMMAND HIP_PATH=${CMAKE_CURRENT_SOURCE_DIR} ${DOXYGEN_EXE} ${CMAKE_CURRENT_SOURCE_DIR}/docs/doxygen-input/doxy.cfg
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/docs)
+endif()
 
 #############################
 # Install steps
@@ -364,8 +367,23 @@ endif()
 #############################
 # Code analysis
 #############################
-# Target: static_check
-add_custom_target(static_check COMMAND cppcheck --force --quiet --enable=warning,performance,portability,information,missingInclude src include -I /opt/rocm/include/hcc -I /opt/rocm/include --suppress=*:/opt/rocm/include/hcc/hc.hpp WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+# Target: cppcheck
+find_program(CPPCHECK_EXE cppcheck)
+if(CPPCHECK_EXE)
+    add_custom_target(cppcheck COMMAND ${CPPCHECK_EXE} --force --quiet --enable=warning,performance,portability,information,missingInclude src include -I /opt/rocm/include/hcc -I /opt/rocm/include --suppress=*:/opt/rocm/include/hcc/hc.hpp
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+endif()
+
+#############################
+# Code formatting
+#############################
+# Target: clangformat
+find_program(CLANGFORMAT_EXE clang-format PATHS ${HCC_HOME}/bin)
+if(CLANGFORMAT_EXE)
+    file(GLOB_RECURSE FORMAT_SOURCE_FILE_LIST *.cpp *.hpp *.h)
+    add_custom_target(clangformat COMMAND ${CLANGFORMAT_EXE} -style=file -i ${FORMAT_SOURCE_FILE_LIST}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+endif()
 
 #############################
 # Testing steps