cmake: control verbosity

Author: scivision

cmake/hdf5.cmake

@@ -1,3 +1,4 @@
+# don't enclose this all in "if(NOT DEFINED HDF5OK)" because CMake intermittantly doesn't cache needed HDF5 variables.
 if(BUILD_SHARED_LIBS)
   set(HDF5_USE_STATIC_LIBRARIES false)
 else()
@@ -15,7 +16,9 @@ if(WIN32)
   endif()
 endif()
 
-message(STATUS "HDF5 includes: ${HDF5_INCLUDE_DIRS} ${HDF5_Fortran_INCLUDE_DIRS}")
+if(NOT DEFINED HDF5OK)
+
+message(STATUS "HDF5 include: ${HDF5_INCLUDE_DIRS} ${HDF5_Fortran_INCLUDE_DIRS}")
 message(STATUS "HDF5 library: ${HDF5_Fortran_LIBRARIES}")
 message(STATUS "HDF5 H5LT library: ${HDF5_Fortran_HL_LIBRARIES}")
 if(HDF5_Fortran_COMPILER_EXECUTABLE)
@@ -24,13 +27,16 @@ endif()
 if(HDF5_Fortran_DEFINITIONS)
   message(STATUS "HDF5 compiler defs: ${HDF5_Fortran_DEFINITIONS}")
 endif()
+endif()
 
 set(CMAKE_REQUIRED_INCLUDES ${HDF5_INCLUDE_DIRS} ${HDF5_Fortran_INCLUDE_DIRS})
 set(CMAKE_REQUIRED_LIBRARIES ${HDF5_Fortran_HL_LIBRARIES} ${HDF5_Fortran_LIBRARIES})
 
 include(CheckFortranSourceCompiles)
-check_fortran_source_compiles("use h5lt; end" hasHDF5 SRC_EXT f90)
+check_fortran_source_compiles("use h5lt; end" HDF5OK SRC_EXT f90)
+
+set(HDF5OK ${HDF5OK} CACHE BOOL "HDF5 library working?")
 
-if(NOT hasHDF5)
+if(NOT HDF5OK)
   message(WARNING "HDF5 library may not be working with ${CMAKE_Fortran_COMPILER_ID} ${CMAKE_Fortran_COMPILER_VERSION}")
 endif()