message: cmake: fix gnu.toolchain
  CMAKE_FIND_ROOT_PATH_MODE_PROGRAM: ONLY => NEVER
  update handling of CMAKE_FIND_ROOT_PATH_MODE_* variables
diff: @@ -57,15 +57,51 @@ else()
  endif() # IN_TRY_COMPILE
  set(CMAKE_SKIP_RPATH TRUE)
  -set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
  +
  +if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
  -set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
  +endif()
  +
  +if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
  + set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
  +endif()
  +
  +if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
  + set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
  +endif()
  +
  +if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
  + set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
  +endif()
  +
  +macro(__cmake_find_root_save_and_reset)
  + foreach(v
  + CMAKE_FIND_ROOT_PATH_MODE_LIBRARY
  + CMAKE_FIND_ROOT_PATH_MODE_INCLUDE
  + CMAKE_FIND_ROOT_PATH_MODE_PACKAGE
  + CMAKE_FIND_ROOT_PATH_MODE_PROGRAM
  + )
  + set(__save_${v} ${${v}})
  + set(${v} NEVER)
  + endforeach()
  +endmacro()
  +
  +macro(__cmake_find_root_restore)
  + foreach(v
  + CMAKE_FIND_ROOT_PATH_MODE_LIBRARY
  + CMAKE_FIND_ROOT_PATH_MODE_INCLUDE
  + CMAKE_FIND_ROOT_PATH_MODE_PACKAGE
  + CMAKE_FIND_ROOT_PATH_MODE_PROGRAM
  + )
  + set(${v} ${__save_${v}})
  + unset(__save_${v})
  + endforeach()
  +endmacro()
  +
  # macro to find programs on the host OS
  macro(find_host_program)
  - set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
  - set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
  - set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)
  + __cmake_find_root_save_and_reset()
  if(CMAKE_HOST_WIN32)
  SET(WIN32 1)
  SET(UNIX)
  @@ -77,16 +113,12 @@ macro(find_host_program)
  SET(WIN32)
  SET(APPLE)
  SET(UNIX 1)
  - set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
  - set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
  - set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
  + __cmake_find_root_restore()
  endmacro()
  # macro to find packages on the host OS
  macro(find_host_package)
  - set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
  - set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER)
  - set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER)
  + __cmake_find_root_save_and_reset()
  if(CMAKE_HOST_WIN32)
  SET(WIN32 1)
  SET(UNIX)
  @@ -98,9 +130,7 @@ macro(find_host_package)
  SET(WIN32)
  SET(APPLE)
  SET(UNIX 1)
  - set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
  - set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
  - set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
  + __cmake_find_root_restore()
  endmacro()
  set(CMAKE_SKIP_RPATH TRUE CACHE BOOL "If set, runtime paths are not added when using shared libraries.")
  