1 files changed, 136 insertions, 0 deletions
diff --git a/cmake/InstallHelpers.cmake b/cmake/InstallHelpers.cmake
new file mode 100644
index 0000000000..de2f970cc1
--- /dev/null
+++ b/cmake/InstallHelpers.cmake
@@ -0,0 +1,136 @@
+# This will create any directories that need to be created in the destination
+# path with the typical owner, group, and user permissions--independent of the
+# umask setting.
+function(create_install_dir_with_perms)
+  cmake_parse_arguments(_install_dir
+    ""
+    "DESTINATION"
+    "DIRECTORY_PERMISSIONS"
+    ${ARGN}
+  )
+
+  if(NOT _install_dir_DESTINATION)
+    message(FATAL_ERROR "Must specify DESTINATION")
+  endif()
+
+  if(NOT _install_dir_DIRECTORY_PERMISSIONS)
+    set(_install_dir_DIRECTORY_PERMISSIONS
+      OWNER_READ OWNER_WRITE OWNER_EXECUTE
+      GROUP_READ GROUP_EXECUTE
+      WORLD_READ WORLD_EXECUTE)
+  endif()
+
+  install(CODE
+    "
+    if(ENV{DESTDIR})
+      set(PREFIX \$ENV{DESTDIR}/\${CMAKE_INSTALL_PREFIX})
+    else()
+      set(PREFIX \${CMAKE_INSTALL_PREFIX})
+    endif()
+
+    set(_current_dir \"\${PREFIX}/${_install_dir_DESTINATION}\")
+    set(_dir_permissions \"${_install_dir_DIRECTORY_PERMISSIONS}\")
+
+    set(_parent_dirs)
+    while(NOT EXISTS \${_current_dir})
+      list(APPEND _parent_dirs \${_current_dir})
+      get_filename_component(_current_dir \${_current_dir} PATH)
+    endwhile()
+
+    if(_parent_dirs)
+      list(REVERSE _parent_dirs)
+    endif()
+
+    # Create any missing folders with the useful permissions.  Note: this uses
+    # a hidden option of CMake, but it's been shown to work with 2.8.11 thru
+    # 3.0.2.
+    foreach(_current_dir \${_parent_dirs})
+      if(NOT IS_DIRECTORY \${_current_dir})
+        file(INSTALL DESTINATION \${_current_dir}
+          TYPE DIRECTORY
+          DIR_PERMISSIONS \${_dir_permissions}
+          FILES \"\")
+      endif()
+    endforeach()
+    ")
+endfunction()
+
+# This is to prevent the user's umask from corrupting the expected permissions
+# for the parent directories.  We want to behave like the install tool here:
+# preserve what's there already, but create new things with useful permissions.
+function(install_helper)
+  cmake_parse_arguments(_install_helper
+    ""
+    "DESTINATION;DIRECTORY;RENAME"
+    "FILES;PROGRAMS;TARGETS;DIRECTORY_PERMISSIONS;FILE_PERMISSIONS"
+    ${ARGN}
+  )
+
+  if(NOT _install_helper_DESTINATION AND NOT _install_helper_TARGETS)
+    message(FATAL_ERROR "Must specify the DESTINATION path")
+  endif()
+
+  if(NOT _install_helper_FILES AND NOT _install_helper_DIRECTORY AND
+     NOT _install_helper_PROGRAMS AND NOT _install_helper_TARGETS)
+    message(FATAL_ERROR "Must specify FILES, PROGRAMS, TARGETS, or a DIRECTORY to install")
+  endif()
+
+  if(NOT _install_helper_DIRECTORY_PERMISSIONS)
+    set(_install_helper_DIRECTORY_PERMISSIONS
+      OWNER_READ OWNER_WRITE OWNER_EXECUTE
+      GROUP_READ GROUP_EXECUTE
+      WORLD_READ WORLD_EXECUTE)
+  endif()
+
+  if(NOT _install_helper_FILE_PERMISSIONS)
+    set(_install_helper_FILE_PERMISSIONS
+      OWNER_READ OWNER_WRITE
+      GROUP_READ
+      WORLD_READ)
+  endif()
+
+  if(_install_helper_RENAME)
+    set(RENAME RENAME ${_install_helper_RENAME})
+  endif()
+
+  if(_install_helper_TARGETS)
+    set(_install_helper_DESTINATION "")
+  endif()
+
+  if(_install_helper_TARGETS)
+    # Ensure the bin area exists with the correct permissions.
+    create_install_dir_with_perms(DESTINATION bin)
+
+    install(
+      TARGETS ${_install_helper_TARGETS}
+      RUNTIME DESTINATION bin)
+  else()
+    create_install_dir_with_perms(
+      DESTINATION ${_install_helper_DESTINATION}
+      DIRECTORY_PERMISSIONS ${_install_helper_DIRECTORY_PERMISSIONS})
+  endif()
+
+  if(_install_helper_DIRECTORY)
+    install(
+      DIRECTORY ${_install_helper_DIRECTORY}
+      DESTINATION ${_install_helper_DESTINATION}
+      DIRECTORY_PERMISSIONS ${_install_helper_DIRECTORY_PERMISSIONS}
+      FILE_PERMISSIONS ${_install_helper_FILE_PERMISSIONS})
+  endif()
+
+  if(_install_helper_FILES)
+    install(
+      FILES ${_install_helper_FILES}
+      DESTINATION ${_install_helper_DESTINATION}
+      PERMISSIONS ${_install_helper_FILE_PERMISSIONS}
+      ${RENAME})
+  endif()
+
+  if(_install_helper_PROGRAMS)
+    install(
+      PROGRAMS ${_install_helper_PROGRAMS}
+      DESTINATION ${_install_helper_DESTINATION}
+      PERMISSIONS ${_install_helper_FILE_PERMISSIONS}
+      ${RENAME})
+  endif()
+endfunction()