header: Forward COMPONENT argument to install in header_install macro

header.cmake

@@ -242,19 +242,36 @@ endfunction(GENERATE_CONFIGURATION_HEADER_V2)
 macro(_SETUP_PROJECT_HEADER_FINALIZE)
   # If the header list is set, install it.
   if(DEFINED ${PROJECT_NAME}_HEADERS)
-    foreach(FILE ${${PROJECT_NAME}_HEADERS})
-      header_install(${FILE})
-    endforeach(FILE)
+    header_install(${${PROJECT_NAME}_HEADERS})
   endif(DEFINED ${PROJECT_NAME}_HEADERS)
 endmacro(_SETUP_PROJECT_HEADER_FINALIZE)
 
 # .rst: .. ifmode:: internal
 #
-# .. command:: HEADER_INSTALL (FILES)
+# ~~~
+# .. command:: HEADER_INSTALL (COMPONENT <component> <files>...)
+# ~~~
 #
 # Install a list of headers.
 #
-macro(HEADER_INSTALL FILES)
+# :param component: Component to forward to install command.
+#
+# :param files: Files to install.
+macro(HEADER_INSTALL)
+  set(options)
+  set(oneValueArgs COMPONENT)
+  set(multiValueArgs)
+  cmake_parse_arguments(ARGS "${options}" "${oneValueArgs}" "${multiValueArgs}"
+                        ${ARGN})
+
+  if(ARGS_COMPONENT)
+    set(_COMPONENT_NAME ${ARGS_COMPONENT})
+  else()
+    set(_COMPONENT_NAME ${CMAKE_INSTALL_DEFAULT_COMPONENT_NAME})
+  endif()
+
+  set(FILES ${ARGS_UNPARSED_ARGUMENTS})
+
   foreach(FILE ${FILES})
     get_filename_component(DIR "${FILE}" PATH)
     string(REGEX REPLACE "${CMAKE_BINARY_DIR}" "" DIR "${DIR}")
@@ -263,6 +280,7 @@ macro(HEADER_INSTALL FILES)
     install(
       FILES ${FILE}
       DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${DIR}"
-      PERMISSIONS OWNER_READ GROUP_READ WORLD_READ OWNER_WRITE)
+      PERMISSIONS OWNER_READ GROUP_READ WORLD_READ OWNER_WRITE
+      COMPONENT ${_COMPONENT_NAME})
   endforeach()
 endmacro()