#==============================================================================
#  PRELIMINARIES
#==============================================================================


# Test for big-endian nature
if(PIO_TEST_BIG_ENDIAN)
  include(TestBigEndian)
  test_big_endian(PIO_BIG_ENDIAN_TEST_RESULT)
  if(PIO_BIG_ENDIAN_TEST_RESULT)
    set(PIO_BIG_ENDIAN ON CACHE BOOL "Whether machine is big endian")
  else()
    set(PIO_BIG_ENDIAN OFF CACHE BOOL "Whether machine is big endian")
  endif()
else()
  set(PIO_BIG_ENDIAN OFF CACHE BOOL "Whether machine is big endian")
endif()


# Look for GPTL
if(PIO_ENABLE_TIMING)
  find_package(GPTL COMPONENTS C QUIET)
  find_package(GPTL COMPONENTS Fortran_Perf QUIET)
endif()

#==============================================================================
#  INCLUDE SOURCE DIRECTORIES
#==============================================================================


# Build GPTL only if necessary
if(PIO_ENABLE_TIMING)
  if(NOT GPTL_C_FOUND OR NOT GPTL_Fortran_Perf_FOUND)
    add_subdirectory(gptl)
  endif()
endif()


# Build the C library
add_subdirectory(clib)
set(CFLAGS ${CFLAGS}  PARENT_SCOPE)
set(CPPFLAGS ${CPPFLAGS} PARENT_SCOPE)



# Build the Fortran library
if(PIO_ENABLE_FORTRAN)
  add_subdirectory(flib)
  set(FFLAGS ${FFLAGS} PARENT_SCOPE)
  set(FCFLAGS ${FCFLAGS} PARENT_SCOPE)
  set(FPPFLAGS ${FPPFLAGS} PARENT_SCOPE)
endif()