diff --git a/cmake/FindASan.cmake b/cmake/FindASan.cmake
index 6d401a4..f6adc68 100644
--- a/cmake/FindASan.cmake
+++ b/cmake/FindASan.cmake
@@ -25,18 +25,18 @@
 option(SANITIZE_ADDRESS "Enable AddressSanitizer for sanitized targets." Off)
 
 set(FLAG_CANDIDATES
-    # Clang 3.2+ use this version. The no-omit-frame-pointer option is optional.
-    "-g -fsanitize=address -fno-omit-frame-pointer"
-    "-g -fsanitize=address"
+  # Clang 3.2+ use this version. The no-omit-frame-pointer option is optional.
+  "-g -fsanitize=address -fno-omit-frame-pointer"
+  "-g -fsanitize=address"
 
-    # Older deprecated flag for ASan
-    "-g -faddress-sanitizer"
-)
+  # Older deprecated flag for ASan
+  "-g -faddress-sanitizer"
+  )
 
 
 if (SANITIZE_ADDRESS AND (SANITIZE_THREAD OR SANITIZE_MEMORY))
-    message(FATAL_ERROR "AddressSanitizer is not compatible with "
-        "ThreadSanitizer or MemorySanitizer.")
+  message(FATAL_ERROR "AddressSanitizer is not compatible with "
+    "ThreadSanitizer or MemorySanitizer.")
 endif ()
 
 include(sanitize-helpers)
@@ -44,22 +44,22 @@ include(sanitize-helpers)
 sanitizer_check_compiler_flags("${FLAG_CANDIDATES}" "AddressSanitizer" "ASan")
 
 if(ASan_FLAG_DETECTED)
-    set(ASan_FOUND TRUE)
+  set(ASan_FOUND TRUE)
 endif()
 
 if (SANITIZE_ADDRESS)
-    find_program(ASan_WRAPPER "asan-wrapper" PATHS ${CMAKE_MODULE_PATH})
-    mark_as_advanced(ASan_WRAPPER)
-    if (CMAKE_SYSTEM_NAME EQUAL "Linux")
-       find_library(ASan_SHARED_LIB "clang_rt.asan-x86_64" PATH_SUFFIXES "linux")
-       mark_as_advanced(ASan_SHARED_LIB)
-    endif()
+  find_program(ASan_WRAPPER "asan-wrapper" PATHS ${CMAKE_MODULE_PATH})
+  mark_as_advanced(ASan_WRAPPER)
+  if (CMAKE_SYSTEM_NAME EQUAL "Linux")
+    find_library(ASan_SHARED_LIB "clang_rt.asan-x86_64" PATH_SUFFIXES "linux")
+    mark_as_advanced(ASan_SHARED_LIB)
+  endif()
 endif ()
 
 function (add_sanitize_address TARGET)
-    if (NOT SANITIZE_ADDRESS)
-        return()
-    endif ()
+  if (NOT SANITIZE_ADDRESS)
+    return()
+  endif ()
 
-    sanitizer_add_flags(${TARGET} "AddressSanitizer" "ASan")
+  sanitizer_add_flags(${TARGET} "AddressSanitizer" "ASan")
 endfunction ()
diff --git a/cmake/FindLeakSan.cmake b/cmake/FindLeakSan.cmake
index 603cd13..00015ae 100644
--- a/cmake/FindLeakSan.cmake
+++ b/cmake/FindLeakSan.cmake
@@ -24,24 +24,24 @@
 # SOFTWARE.
 
 option(SANITIZE_LEAK
-    "Enable LeakSanitizer for sanitized targets." Off)
+  "Enable LeakSanitizer for sanitized targets." Off)
 
 set(FLAG_CANDIDATES
-    "-g -fsanitize=leak"
-)
+  "-g -fsanitize=leak"
+  )
 
 
 include(sanitize-helpers)
 
 if (SANITIZE_LEAK)
-    sanitizer_check_compiler_flags("${FLAG_CANDIDATES}"
-        "LeakSanitizer" "LeakSan")
+  sanitizer_check_compiler_flags("${FLAG_CANDIDATES}"
+    "LeakSanitizer" "LeakSan")
 endif ()
 
 function (add_sanitize_leak TARGET)
-    if (NOT SANITIZE_LEAK)
-        return()
-    endif ()
+  if (NOT SANITIZE_LEAK)
+    return()
+  endif ()
 
-    sanitizer_add_flags(${TARGET} "LeakSanitizer" "LeakSan")
+  sanitizer_add_flags(${TARGET} "LeakSanitizer" "LeakSan")
 endfunction ()
diff --git a/cmake/FindMSan.cmake b/cmake/FindMSan.cmake
index 57f85ba..77f45ae 100644
--- a/cmake/FindMSan.cmake
+++ b/cmake/FindMSan.cmake
@@ -25,8 +25,8 @@
 option(SANITIZE_MEMORY "Enable MemorySanitizer for sanitized targets." Off)
 
 set(FLAG_CANDIDATES
-    "-g -fsanitize=memory"
-)
+  "-g -fsanitize=memory"
+  )
 
 
 include(sanitize-helpers)
@@ -34,28 +34,28 @@ include(sanitize-helpers)
 sanitizer_check_compiler_flags("${FLAG_CANDIDATES}" "MemorySanitizer" "MSan")
 
 if(MSan_FLAG_DETECTED)
-    set(MSan_FOUND TRUE)
+  set(MSan_FOUND TRUE)
 endif()
 
 if (SANITIZE_MEMORY)
-    if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
-        message(WARNING "MemorySanitizer disabled for target ${TARGET} because "
-            "MemorySanitizer is supported for Linux systems only.")
-        set(SANITIZE_MEMORY Off CACHE BOOL
-            "Enable MemorySanitizer for sanitized targets." FORCE)
-    elseif (NOT ${CMAKE_SIZEOF_VOID_P} EQUAL 8)
-        message(WARNING "MemorySanitizer disabled for target ${TARGET} because "
-            "MemorySanitizer is supported for 64bit systems only.")
-        set(SANITIZE_MEMORY Off CACHE BOOL
-            "Enable MemorySanitizer for sanitized targets." FORCE)
-    else ()
-    endif ()
+  if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+    message(WARNING "MemorySanitizer disabled for target ${TARGET} because "
+      "MemorySanitizer is supported for Linux systems only.")
+    set(SANITIZE_MEMORY Off CACHE BOOL
+      "Enable MemorySanitizer for sanitized targets." FORCE)
+  elseif (NOT ${CMAKE_SIZEOF_VOID_P} EQUAL 8)
+    message(WARNING "MemorySanitizer disabled for target ${TARGET} because "
+      "MemorySanitizer is supported for 64bit systems only.")
+    set(SANITIZE_MEMORY Off CACHE BOOL
+      "Enable MemorySanitizer for sanitized targets." FORCE)
+  else ()
+  endif ()
 endif ()
 
 function (add_sanitize_memory TARGET)
-    if (NOT SANITIZE_MEMORY)
-        return()
-    endif ()
+  if (NOT SANITIZE_MEMORY)
+    return()
+  endif ()
 
-    sanitizer_add_flags(${TARGET} "MemorySanitizer" "MSan")
+  sanitizer_add_flags(${TARGET} "MemorySanitizer" "MSan")
 endfunction ()
diff --git a/cmake/FindSanitizers.cmake b/cmake/FindSanitizers.cmake
index 37809ba..94b1253 100644
--- a/cmake/FindSanitizers.cmake
+++ b/cmake/FindSanitizers.cmake
@@ -31,7 +31,7 @@ option(SANITIZE_LINK_STATIC "Try to link static against sanitizers." Off)
 
 set(FIND_QUIETLY_FLAG "")
 if (DEFINED Sanitizers_FIND_QUIETLY)
-    set(FIND_QUIETLY_FLAG "QUIET")
+  set(FIND_QUIETLY_FLAG "QUIET")
 endif ()
 
 find_package(ASan ${FIND_QUIETLY_FLAG})
@@ -44,84 +44,84 @@ find_package(LeakSan ${FIND_QUIETLY_FLAG})
 set(Sanitizers_COMPONENTS "")
 
 if(ASan_FOUND)
-    set(Sanitizers_ASan_FOUND TRUE)
-    list(APPEND Sanitizers_COMPONENTS ASan)
+  set(Sanitizers_ASan_FOUND TRUE)
+  list(APPEND Sanitizers_COMPONENTS ASan)
 endif()
 
 if(TSan_FOUND)
-    set(Sanitizers_TSan_FOUND TRUE)
-    list(APPEND Sanitizers_COMPONENTS TSan)
+  set(Sanitizers_TSan_FOUND TRUE)
+  list(APPEND Sanitizers_COMPONENTS TSan)
 endif()
 
 if(MSan_FOUND)
-    set(Sanitizers_MSan_FOUND TRUE)
-    list(APPEND Sanitizers_COMPONENTS MSan)
+  set(Sanitizers_MSan_FOUND TRUE)
+  list(APPEND Sanitizers_COMPONENTS MSan)
 endif()
 
 if(UBSan_FOUND)
-    set(Sanitizers_UBSan_FOUND TRUE)
-    list(APPEND Sanitizers_COMPONENTS UBSan)
+  set(Sanitizers_UBSan_FOUND TRUE)
+  list(APPEND Sanitizers_COMPONENTS UBSan)
 endif()
 
 
 include(FindPackageHandleStandardArgs)
 
 find_package_handle_standard_args(
-    Sanitizers
-    FOUND_VAR Sanitizers_FOUND
-    REQUIRED_VARS Sanitizers_COMPONENTS
-    HANDLE_COMPONENTS
-)
+  Sanitizers
+  FOUND_VAR Sanitizers_FOUND
+  REQUIRED_VARS Sanitizers_COMPONENTS
+  HANDLE_COMPONENTS
+  )
 
 
 function(sanitizer_add_blacklist_file FILE)
-    if(NOT IS_ABSOLUTE ${FILE})
-        set(FILE "${CMAKE_CURRENT_SOURCE_DIR}/${FILE}")
-    endif()
-    get_filename_component(FILE "${FILE}" REALPATH)
+  if(NOT IS_ABSOLUTE ${FILE})
+    set(FILE "${CMAKE_CURRENT_SOURCE_DIR}/${FILE}")
+  endif()
+  get_filename_component(FILE "${FILE}" REALPATH)
 
-    sanitizer_check_compiler_flags("-fsanitize-blacklist=${FILE}"
-        "SanitizerBlacklist" "SanBlist")
+  sanitizer_check_compiler_flags("-fsanitize-blacklist=${FILE}"
+    "SanitizerBlacklist" "SanBlist")
 endfunction()
 
 function(add_sanitizers ...)
-    # If no sanitizer is enabled, return immediately.
-    if (NOT (SANITIZE_ADDRESS OR SANITIZE_MEMORY OR SANITIZE_THREAD OR
-        SANITIZE_UNDEFINED))
-        return()
+  # If no sanitizer is enabled, return immediately.
+  if (NOT (SANITIZE_ADDRESS OR SANITIZE_MEMORY OR SANITIZE_THREAD OR
+    SANITIZE_UNDEFINED))
+    return()
+  endif ()
+
+  foreach (TARGET ${ARGV})
+    # Check if this target will be compiled by exactly one compiler. Other-
+    # wise sanitizers can't be used and a warning should be printed once.
+    get_target_property(TARGET_TYPE ${TARGET} TYPE)
+    if (TARGET_TYPE STREQUAL "INTERFACE_LIBRARY")
+      message(WARNING "Can't use any sanitizers for target ${TARGET}, "
+        "because it is an interface library and cannot be "
+        "compiled directly.")
+      return()
+    endif ()
+    sanitizer_target_compilers(${TARGET} TARGET_COMPILER)
+    list(LENGTH TARGET_COMPILER NUM_COMPILERS)
+    if (NUM_COMPILERS GREATER 1)
+      message(WARNING "Can't use any sanitizers for target ${TARGET}, "
+        "because it will be compiled by incompatible compilers. "
+        "Target will be compiled without sanitizers.")
+      return()
+
+      # If the target is compiled by no or no known compiler, give a warning.
+    elseif (NUM_COMPILERS EQUAL 0)
+      message(WARNING "Sanitizers for target ${TARGET} may not be"
+        " usable, because it uses no or an unknown compiler. "
+        "This is a false warning for targets using only "
+        "object lib(s) as input.")
     endif ()
 
-    foreach (TARGET ${ARGV})
-        # Check if this target will be compiled by exactly one compiler. Other-
-        # wise sanitizers can't be used and a warning should be printed once.
-        get_target_property(TARGET_TYPE ${TARGET} TYPE)
-        if (TARGET_TYPE STREQUAL "INTERFACE_LIBRARY")
-            message(WARNING "Can't use any sanitizers for target ${TARGET}, "
-                    "because it is an interface library and cannot be "
-                    "compiled directly.")
-            return()
-        endif ()
-        sanitizer_target_compilers(${TARGET} TARGET_COMPILER)
-        list(LENGTH TARGET_COMPILER NUM_COMPILERS)
-        if (NUM_COMPILERS GREATER 1)
-            message(WARNING "Can't use any sanitizers for target ${TARGET}, "
-                    "because it will be compiled by incompatible compilers. "
-                    "Target will be compiled without sanitizers.")
-            return()
-
-        # If the target is compiled by no or no known compiler, give a warning.
-        elseif (NUM_COMPILERS EQUAL 0)
-            message(WARNING "Sanitizers for target ${TARGET} may not be"
-                    " usable, because it uses no or an unknown compiler. "
-                    "This is a false warning for targets using only "
-		    "object lib(s) as input.")
-        endif ()
-
-        # Add sanitizers for target.
-        add_sanitize_address(${TARGET})
-        add_sanitize_thread(${TARGET})
-        add_sanitize_memory(${TARGET})
-        add_sanitize_undefined(${TARGET})
-        add_sanitize_leak(${TARGET})
-	endforeach ()
+    # Add sanitizers for target.
+    add_sanitize_address(${TARGET})
+    add_sanitize_thread(${TARGET})
+    add_sanitize_memory(${TARGET})
+    add_sanitize_undefined(${TARGET})
+    add_sanitize_leak(${TARGET})
+  endforeach ()
 endfunction(add_sanitizers)
diff --git a/cmake/FindTSan.cmake b/cmake/FindTSan.cmake
index d87857a..c560ab4 100644
--- a/cmake/FindTSan.cmake
+++ b/cmake/FindTSan.cmake
@@ -25,14 +25,14 @@
 option(SANITIZE_THREAD "Enable ThreadSanitizer for sanitized targets." Off)
 
 set(FLAG_CANDIDATES
-    "-g -fsanitize=thread"
-)
+  "-g -fsanitize=thread"
+  )
 
 
 # ThreadSanitizer is not compatible with MemorySanitizer.
 if (SANITIZE_THREAD AND SANITIZE_MEMORY)
-    message(FATAL_ERROR "ThreadSanitizer is not compatible with "
-        "MemorySanitizer.")
+  message(FATAL_ERROR "ThreadSanitizer is not compatible with "
+    "MemorySanitizer.")
 endif ()
 
 
@@ -41,28 +41,28 @@ include(sanitize-helpers)
 sanitizer_check_compiler_flags("${FLAG_CANDIDATES}" "ThreadSanitizer" "TSan")
 
 if(TSan_FLAG_DETECTED)
-    set(TSan_FOUND TRUE)
+  set(TSan_FOUND TRUE)
 endif()
 
 if (SANITIZE_THREAD)
   if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" AND
       NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
-        message(WARNING "ThreadSanitizer disabled for target ${TARGET} because "
-          "ThreadSanitizer is supported for Linux systems and macOS only.")
-        set(SANITIZE_THREAD Off CACHE BOOL
-            "Enable ThreadSanitizer for sanitized targets." FORCE)
-    elseif (NOT ${CMAKE_SIZEOF_VOID_P} EQUAL 8)
-        message(WARNING "ThreadSanitizer disabled for target ${TARGET} because "
-            "ThreadSanitizer is supported for 64bit systems only.")
-        set(SANITIZE_THREAD Off CACHE BOOL
-            "Enable ThreadSanitizer for sanitized targets." FORCE)
-    endif ()
+    message(WARNING "ThreadSanitizer disabled for target ${TARGET} because "
+      "ThreadSanitizer is supported for Linux systems and macOS only.")
+    set(SANITIZE_THREAD Off CACHE BOOL
+      "Enable ThreadSanitizer for sanitized targets." FORCE)
+  elseif (NOT ${CMAKE_SIZEOF_VOID_P} EQUAL 8)
+    message(WARNING "ThreadSanitizer disabled for target ${TARGET} because "
+      "ThreadSanitizer is supported for 64bit systems only.")
+    set(SANITIZE_THREAD Off CACHE BOOL
+      "Enable ThreadSanitizer for sanitized targets." FORCE)
+  endif ()
 endif ()
 
 function (add_sanitize_thread TARGET)
-    if (NOT SANITIZE_THREAD)
-        return()
-    endif ()
+  if (NOT SANITIZE_THREAD)
+    return()
+  endif ()
 
-    sanitizer_add_flags(${TARGET} "ThreadSanitizer" "TSan")
+  sanitizer_add_flags(${TARGET} "ThreadSanitizer" "TSan")
 endfunction ()
diff --git a/cmake/FindUBSan.cmake b/cmake/FindUBSan.cmake
index d9ec84d..379d9fb 100644
--- a/cmake/FindUBSan.cmake
+++ b/cmake/FindUBSan.cmake
@@ -23,11 +23,11 @@
 # SOFTWARE.
 
 option(SANITIZE_UNDEFINED
-    "Enable UndefinedBehaviorSanitizer for sanitized targets." Off)
+  "Enable UndefinedBehaviorSanitizer for sanitized targets." Off)
 
 set(FLAG_CANDIDATES
-    "-g -fsanitize=undefined"
-)
+  "-g -fsanitize=undefined"
+  )
 
 
 include(sanitize-helpers)
@@ -35,13 +35,13 @@ include(sanitize-helpers)
 sanitizer_check_compiler_flags("${FLAG_CANDIDATES}" "UndefinedBehaviorSanitizer" "UBSan")
 
 if(UBSan_FLAG_DETECTED)
-    set(UBSan_FOUND TRUE)
+  set(UBSan_FOUND TRUE)
 endif()
 
 function (add_sanitize_undefined TARGET)
-    if (NOT SANITIZE_UNDEFINED)
-        return()
-    endif ()
+  if (NOT SANITIZE_UNDEFINED)
+    return()
+  endif ()
 
-    sanitizer_add_flags(${TARGET} "UndefinedBehaviorSanitizer" "UBSan")
+  sanitizer_add_flags(${TARGET} "UndefinedBehaviorSanitizer" "UBSan")
 endfunction ()
diff --git a/cmake/sanitize-helpers.cmake b/cmake/sanitize-helpers.cmake
index 3649b07..98481eb 100644
--- a/cmake/sanitize-helpers.cmake
+++ b/cmake/sanitize-helpers.cmake
@@ -24,154 +24,154 @@
 
 # Helper function to get the language of a source file.
 function (sanitizer_lang_of_source FILE RETURN_VAR)
-    get_filename_component(LONGEST_EXT "${FILE}" EXT)
-    # If extension is empty return. This can happen for extensionless headers
-    if("${LONGEST_EXT}" STREQUAL "")
-       set(${RETURN_VAR} "" PARENT_SCOPE)
-       return()
-    endif()
-    # Get shortest extension as some files can have dot in their names
-    string(REGEX REPLACE "^.*(\\.[^.]+)$" "\\1" FILE_EXT ${LONGEST_EXT})
-    string(TOLOWER "${FILE_EXT}" FILE_EXT)
-    string(SUBSTRING "${FILE_EXT}" 1 -1 FILE_EXT)
-
-    get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
-    foreach (LANG ${ENABLED_LANGUAGES})
-        list(FIND CMAKE_${LANG}_SOURCE_FILE_EXTENSIONS "${FILE_EXT}" TEMP)
-        if (NOT ${TEMP} EQUAL -1)
-            set(${RETURN_VAR} "${LANG}" PARENT_SCOPE)
-            return()
-        endif ()
-    endforeach()
-
+  get_filename_component(LONGEST_EXT "${FILE}" EXT)
+  # If extension is empty return. This can happen for extensionless headers
+  if("${LONGEST_EXT}" STREQUAL "")
     set(${RETURN_VAR} "" PARENT_SCOPE)
+    return()
+  endif()
+  # Get shortest extension as some files can have dot in their names
+  string(REGEX REPLACE "^.*(\\.[^.]+)$" "\\1" FILE_EXT ${LONGEST_EXT})
+  string(TOLOWER "${FILE_EXT}" FILE_EXT)
+  string(SUBSTRING "${FILE_EXT}" 1 -1 FILE_EXT)
+
+  get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
+  foreach (LANG ${ENABLED_LANGUAGES})
+    list(FIND CMAKE_${LANG}_SOURCE_FILE_EXTENSIONS "${FILE_EXT}" TEMP)
+    if (NOT ${TEMP} EQUAL -1)
+      set(${RETURN_VAR} "${LANG}" PARENT_SCOPE)
+      return()
+    endif ()
+  endforeach()
+
+  set(${RETURN_VAR} "" PARENT_SCOPE)
 endfunction ()
 
 
 # Helper function to get compilers used by a target.
 function (sanitizer_target_compilers TARGET RETURN_VAR)
-    # Check if all sources for target use the same compiler. If a target uses
-    # e.g. C and Fortran mixed and uses different compilers (e.g. clang and
-    # gfortran) this can trigger huge problems, because different compilers may
-    # use different implementations for sanitizers.
-    set(BUFFER "")
-    get_target_property(TSOURCES ${TARGET} SOURCES)
-    foreach (FILE ${TSOURCES})
-        # If expression was found, FILE is a generator-expression for an object
-        # library. Object libraries will be ignored.
-        string(REGEX MATCH "TARGET_OBJECTS:([^ >]+)" _file ${FILE})
-        if ("${_file}" STREQUAL "")
-            sanitizer_lang_of_source(${FILE} LANG)
-            if (LANG)
-                list(APPEND BUFFER ${CMAKE_${LANG}_COMPILER_ID})
-            endif ()
-        endif ()
-    endforeach ()
+  # Check if all sources for target use the same compiler. If a target uses
+  # e.g. C and Fortran mixed and uses different compilers (e.g. clang and
+  # gfortran) this can trigger huge problems, because different compilers may
+  # use different implementations for sanitizers.
+  set(BUFFER "")
+  get_target_property(TSOURCES ${TARGET} SOURCES)
+  foreach (FILE ${TSOURCES})
+    # If expression was found, FILE is a generator-expression for an object
+    # library. Object libraries will be ignored.
+    string(REGEX MATCH "TARGET_OBJECTS:([^ >]+)" _file ${FILE})
+    if ("${_file}" STREQUAL "")
+      sanitizer_lang_of_source(${FILE} LANG)
+      if (LANG)
+        list(APPEND BUFFER ${CMAKE_${LANG}_COMPILER_ID})
+      endif ()
+    endif ()
+  endforeach ()
 
-    list(REMOVE_DUPLICATES BUFFER)
-    set(${RETURN_VAR} "${BUFFER}" PARENT_SCOPE)
+  list(REMOVE_DUPLICATES BUFFER)
+  set(${RETURN_VAR} "${BUFFER}" PARENT_SCOPE)
 endfunction ()
 
 
 # Helper function to check compiler flags for language compiler.
 function (sanitizer_check_compiler_flag FLAG LANG VARIABLE)
-    if (${LANG} STREQUAL "C")
-        include(CheckCCompilerFlag)
-        check_c_compiler_flag("${FLAG}" ${VARIABLE})
+  if (${LANG} STREQUAL "C")
+    include(CheckCCompilerFlag)
+    check_c_compiler_flag("${FLAG}" ${VARIABLE})
 
-    elseif (${LANG} STREQUAL "CXX")
-        include(CheckCXXCompilerFlag)
-        check_cxx_compiler_flag("${FLAG}" ${VARIABLE})
+  elseif (${LANG} STREQUAL "CXX")
+    include(CheckCXXCompilerFlag)
+    check_cxx_compiler_flag("${FLAG}" ${VARIABLE})
 
-    elseif (${LANG} STREQUAL "Fortran")
-        # CheckFortranCompilerFlag was introduced in CMake 3.x. To be compatible
-        # with older Cmake versions, we will check if this module is present
-        # before we use it. Otherwise we will define Fortran coverage support as
-        # not available.
-        include(CheckFortranCompilerFlag OPTIONAL RESULT_VARIABLE INCLUDED)
-        if (INCLUDED)
-            check_fortran_compiler_flag("${FLAG}" ${VARIABLE})
-        elseif (NOT CMAKE_REQUIRED_QUIET)
-            message(STATUS "Performing Test ${VARIABLE}")
-            message(STATUS "Performing Test ${VARIABLE}"
-                " - Failed (Check not supported)")
-        endif ()
-    endif()
+  elseif (${LANG} STREQUAL "Fortran")
+    # CheckFortranCompilerFlag was introduced in CMake 3.x. To be compatible
+    # with older Cmake versions, we will check if this module is present
+    # before we use it. Otherwise we will define Fortran coverage support as
+    # not available.
+    include(CheckFortranCompilerFlag OPTIONAL RESULT_VARIABLE INCLUDED)
+    if (INCLUDED)
+      check_fortran_compiler_flag("${FLAG}" ${VARIABLE})
+    elseif (NOT CMAKE_REQUIRED_QUIET)
+      message(STATUS "Performing Test ${VARIABLE}")
+      message(STATUS "Performing Test ${VARIABLE}"
+        " - Failed (Check not supported)")
+    endif ()
+  endif()
 endfunction ()
 
 
 # Helper function to test compiler flags.
 function (sanitizer_check_compiler_flags FLAG_CANDIDATES NAME PREFIX)
-    set(CMAKE_REQUIRED_QUIET ${${PREFIX}_FIND_QUIETLY})
+  set(CMAKE_REQUIRED_QUIET ${${PREFIX}_FIND_QUIETLY})
 
-    get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
-    foreach (LANG ${ENABLED_LANGUAGES})
-        # Sanitizer flags are not dependend on language, but the used compiler.
-        # So instead of searching flags foreach language, search flags foreach
-        # compiler used.
-        set(COMPILER ${CMAKE_${LANG}_COMPILER_ID})
-        if (NOT DEFINED ${PREFIX}_${COMPILER}_FLAGS)
-            foreach (FLAG ${FLAG_CANDIDATES})
-                if(NOT CMAKE_REQUIRED_QUIET)
-                    message(STATUS "Try ${COMPILER} ${NAME} flag = [${FLAG}]")
-                endif()
+  get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
+  foreach (LANG ${ENABLED_LANGUAGES})
+    # Sanitizer flags are not dependend on language, but the used compiler.
+    # So instead of searching flags foreach language, search flags foreach
+    # compiler used.
+    set(COMPILER ${CMAKE_${LANG}_COMPILER_ID})
+    if (NOT DEFINED ${PREFIX}_${COMPILER}_FLAGS)
+      foreach (FLAG ${FLAG_CANDIDATES})
+        if(NOT CMAKE_REQUIRED_QUIET)
+          message(STATUS "Try ${COMPILER} ${NAME} flag = [${FLAG}]")
+        endif()
 
-                set(CMAKE_REQUIRED_FLAGS "${FLAG}")
-                unset(${PREFIX}_FLAG_DETECTED CACHE)
-                sanitizer_check_compiler_flag("${FLAG}" ${LANG}
-                    ${PREFIX}_FLAG_DETECTED)
+        set(CMAKE_REQUIRED_FLAGS "${FLAG}")
+        unset(${PREFIX}_FLAG_DETECTED CACHE)
+        sanitizer_check_compiler_flag("${FLAG}" ${LANG}
+          ${PREFIX}_FLAG_DETECTED)
 
-                if (${PREFIX}_FLAG_DETECTED)
-                    # If compiler is a GNU compiler, search for static flag, if
-                    # SANITIZE_LINK_STATIC is enabled.
-                    if (SANITIZE_LINK_STATIC AND (${COMPILER} STREQUAL "GNU"))
-                        string(TOLOWER ${PREFIX} PREFIX_lower)
-                        sanitizer_check_compiler_flag(
-                            "-static-lib${PREFIX_lower}" ${LANG}
-                            ${PREFIX}_STATIC_FLAG_DETECTED)
+        if (${PREFIX}_FLAG_DETECTED)
+          # If compiler is a GNU compiler, search for static flag, if
+          # SANITIZE_LINK_STATIC is enabled.
+          if (SANITIZE_LINK_STATIC AND (${COMPILER} STREQUAL "GNU"))
+            string(TOLOWER ${PREFIX} PREFIX_lower)
+            sanitizer_check_compiler_flag(
+              "-static-lib${PREFIX_lower}" ${LANG}
+              ${PREFIX}_STATIC_FLAG_DETECTED)
 
-                        if (${PREFIX}_STATIC_FLAG_DETECTED)
-                            set(FLAG "-static-lib${PREFIX_lower} ${FLAG}")
-                        endif ()
-                    endif ()
-
-                    set(${PREFIX}_${COMPILER}_FLAGS "${FLAG}" CACHE STRING
-                        "${NAME} flags for ${COMPILER} compiler.")
-                    mark_as_advanced(${PREFIX}_${COMPILER}_FLAGS)
-                    break()
-                endif ()
-            endforeach ()
-
-            if (NOT ${PREFIX}_FLAG_DETECTED)
-                set(${PREFIX}_${COMPILER}_FLAGS "" CACHE STRING
-                    "${NAME} flags for ${COMPILER} compiler.")
-                mark_as_advanced(${PREFIX}_${COMPILER}_FLAGS)
-
-                message(WARNING "${NAME} is not available for ${COMPILER} "
-                        "compiler. Targets using this compiler will be "
-                        "compiled without ${NAME}.")
+            if (${PREFIX}_STATIC_FLAG_DETECTED)
+              set(FLAG "-static-lib${PREFIX_lower} ${FLAG}")
             endif ()
+          endif ()
+
+          set(${PREFIX}_${COMPILER}_FLAGS "${FLAG}" CACHE STRING
+            "${NAME} flags for ${COMPILER} compiler.")
+          mark_as_advanced(${PREFIX}_${COMPILER}_FLAGS)
+          break()
         endif ()
-    endforeach ()
+      endforeach ()
+
+      if (NOT ${PREFIX}_FLAG_DETECTED)
+        set(${PREFIX}_${COMPILER}_FLAGS "" CACHE STRING
+          "${NAME} flags for ${COMPILER} compiler.")
+        mark_as_advanced(${PREFIX}_${COMPILER}_FLAGS)
+
+        message(WARNING "${NAME} is not available for ${COMPILER} "
+          "compiler. Targets using this compiler will be "
+          "compiled without ${NAME}.")
+      endif ()
+    endif ()
+  endforeach ()
 endfunction ()
 
 
 # Helper to assign sanitizer flags for TARGET.
 function (sanitizer_add_flags TARGET NAME PREFIX)
-    # Get list of compilers used by target and check, if sanitizer is available
-    # for this target. Other compiler checks like check for conflicting
-    # compilers will be done in add_sanitizers function.
-    sanitizer_target_compilers(${TARGET} TARGET_COMPILER)
-    list(LENGTH TARGET_COMPILER NUM_COMPILERS)
-    if ("${${PREFIX}_${TARGET_COMPILER}_FLAGS}" STREQUAL "")
-        return()
-    endif()
+  # Get list of compilers used by target and check, if sanitizer is available
+  # for this target. Other compiler checks like check for conflicting
+  # compilers will be done in add_sanitizers function.
+  sanitizer_target_compilers(${TARGET} TARGET_COMPILER)
+  list(LENGTH TARGET_COMPILER NUM_COMPILERS)
+  if ("${${PREFIX}_${TARGET_COMPILER}_FLAGS}" STREQUAL "")
+    return()
+  endif()
 
-    # Set compile- and link-flags for target.
-    set_property(TARGET ${TARGET} APPEND_STRING
-        PROPERTY COMPILE_FLAGS " ${${PREFIX}_${TARGET_COMPILER}_FLAGS}")
-    set_property(TARGET ${TARGET} APPEND_STRING
-        PROPERTY COMPILE_FLAGS " ${SanBlist_${TARGET_COMPILER}_FLAGS}")
-    set_property(TARGET ${TARGET} APPEND_STRING
-        PROPERTY LINK_FLAGS " ${${PREFIX}_${TARGET_COMPILER}_FLAGS}")
+  # Set compile- and link-flags for target.
+  set_property(TARGET ${TARGET} APPEND_STRING
+    PROPERTY COMPILE_FLAGS " ${${PREFIX}_${TARGET_COMPILER}_FLAGS}")
+  set_property(TARGET ${TARGET} APPEND_STRING
+    PROPERTY COMPILE_FLAGS " ${SanBlist_${TARGET_COMPILER}_FLAGS}")
+  set_property(TARGET ${TARGET} APPEND_STRING
+    PROPERTY LINK_FLAGS " ${${PREFIX}_${TARGET_COMPILER}_FLAGS}")
 endfunction ()