[cmake] adds clang-format infrastructre + format file from dune-multiscale

.clang-format

-# http://llvm.org/releases/3.7.0/tools/clang/docs/ClangFormatStyleOptions.html
-AlignAfterOpenBracket: true
-AlignConsecutiveAssignments: true
+---
+# BasedOnStyle:  LLVM
+AccessModifierOffset: -2
+ConstructorInitializerIndentWidth: 2
 AlignEscapedNewlinesLeft: false
-AlignOperands: true
-AlignTrailingComments: false
+AlignTrailingComments: true
 AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortBlocksOnASingleLine: false
-AllowShortCaseLabelsOnASingleLine: false
-AllowShortFunctionsOnASingleLine: Empty
 AllowShortIfStatementsOnASingleLine: false
 AllowShortLoopsOnASingleLine: false
-AlwaysBreakAfterDefinitionReturnType: None
-AlwaysBreakBeforeMultilineStrings: false
 AlwaysBreakTemplateDeclarations: true
-BasedOnStyle: Mozilla
-BinPackArguments: false
-BinPackParameters: true # this applies to template arguments, function arguments and typedefs, so we cannot set this to false (very much unfortunately)!
-BreakBeforeBinaryOperators: NonAssignment
-BreakBeforeBraces: Mozilla
-BreakBeforeTernaryOperators: true
+AlwaysBreakBeforeMultilineStrings: false
+BreakBeforeBinaryOperators: false
 BreakConstructorInitializersBeforeComma: true
-ColumnLimit: 120
+BinPackParameters: true
+ColumnLimit:     120
 ConstructorInitializerAllOnOneLineOrOnePerLine: false
-ConstructorInitializerIndentWidth: 2
-ContinuationIndentWidth: 4
-Cpp11BracedListStyle: true
-DerivePointerAlignment: false
+DerivePointerBinding: false
 ExperimentalAutoDetectBinPacking: false
 IndentCaseLabels: true
-IndentWidth: 2
-IndentWrappedFunctionNames: false
-KeepEmptyLinesAtTheStartOfBlocks: true
-Language: Cpp
-MaxEmptyLinesToKeep: 2
+MaxEmptyLinesToKeep: 1
 NamespaceIndentation: None
+ObjCSpaceBeforeProtocolList: true
 PenaltyBreakComment: 60
-PenaltyBreakFirstLessLess: 120
 PenaltyBreakString: 1000
+PenaltyBreakFirstLessLess: 120
 PenaltyExcessCharacter: 1000000
 PenaltyReturnTypeOnItsOwnLine: 60
-PointerAlignment: Left
-SpaceAfterCStyleCast: false
-SpaceBeforeAssignmentOperators: true
-SpaceBeforeParens: ControlStatements
-SpaceInEmptyParentheses: false
+PointerBindsToType: true
 SpacesBeforeTrailingComments: 1
-SpacesInAngles: false
-SpacesInCStyleCastParentheses: false
+Cpp11BracedListStyle: true
+Standard:        Cpp11
+IndentWidth:     2
+TabWidth:        2
+UseTab:          false
+BreakBeforeBraces: Attach
+IndentFunctionDeclarationAfterType: false
 SpacesInParentheses: false
-SpacesInSquareBrackets: false
-Standard: Cpp11
-TabWidth: 2
-UseTab: Never
+SpaceInEmptyParentheses: false
+SpacesInCStyleCastParentheses: false
+SpaceAfterControlStatementKeyword: true
+...
+

dune/stuff/CMakeLists.txt

@@ -36,5 +36,7 @@ endif(dune-grid_FOUND)
 target_link_dune_default_libraries(dunestuff)
 
 add_analyze(${lib_dune_stuff_sources})
+FILE( GLOB_RECURSE _header "${CMAKE_CURRENT_SOURCE_DIR}/*.hh" )
+add_format(${lib_dune_stuff_sources} ${_header})
 
 add_subdirectory(test EXCLUDE_FROM_ALL)