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| author | Slávek Banko <slavek.banko@axis.cz> | 2019-01-17 00:40:08 +0100 |
|---|---|---|
| committer | Slávek Banko <slavek.banko@axis.cz> | 2019-01-28 16:30:27 +0100 |
| commit | 8d8c763683c5a975152b9259a1b7b89fddf34686 (patch) | |
| tree | 44edd1e5022dd20f05f76033eef740a8631345c6 | |
| parent | 4512d95ca64fd0334fa1c28a7630012d87dc99a3 (diff) | |
| download | tde-cmake-8d8c7636.tar.gz tde-cmake-8d8c7636.zip | |
Add tde_setup_largefiles macro.
The macro sets the necessary definitions so that the default libc
filesystem interface will be for large files on all architectures.
Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
| -rw-r--r-- | modules/TDEMacros.cmake | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/modules/TDEMacros.cmake b/modules/TDEMacros.cmake index 15008b8..8f86c62 100644 --- a/modules/TDEMacros.cmake +++ b/modules/TDEMacros.cmake @@ -1929,6 +1929,92 @@ endmacro( ) ################################################ ##### +##### tde_setup_largefiles + +macro( tde_setup_largefiles ) + if( NOT DEFINED HAVE_LARGEFILES ) + message( STATUS "Check support for large files" ) + unset( LARGEFILES_DEFINITIONS ) + + # check without special definitions + unset( HAVE_SIZEOF_T CACHE ) + check_type_size( off_t SIZEOF_OFF_T ) + if( SIZEOF_OFF_T GREATER 7 ) + set( HAVE_LARGEFILES 1 ) + endif( ) + + # check with definition _FILE_OFFSET_BITS=64 + if( NOT HAVE_LARGEFILES ) + unset( HAVE_SIZEOF_OFF_T CACHE ) + tde_save_and_set( CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_FILE_OFFSET_BITS=64" ) + check_type_size( off_t SIZEOF_OFF_T ) + tde_restore( CMAKE_REQUIRED_DEFINITIONS ) + if( SIZEOF_OFF_T GREATER 7 ) + set( LARGEFILES_DEFINITIONS "-D_FILE_OFFSET_BITS=64" ) + set( HAVE_LARGEFILES 1 ) + endif( ) + endif( ) + + # check with definition _LARGE_FILES + if( NOT HAVE_LARGEFILES ) + unset( HAVE_SIZEOF_OFF_T CACHE ) + tde_save_and_set( CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_LARGE_FILES" ) + check_type_size( off_t SIZEOF_OFF_T ) + tde_restore( CMAKE_REQUIRED_DEFINITIONS ) + if( SIZEOF_OFF_T GREATER 7 ) + set( LARGEFILES_DEFINITIONS "-D_LARGE_FILES" ) + set( HAVE_LARGEFILES 1 ) + endif( ) + endif( ) + + # check with definition _LARGEFILE_SOURCE + if( NOT HAVE_LARGEFILES ) + unset( HAVE_SIZEOF_OFF_T CACHE ) + tde_save_and_set( CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_LARGEFILE_SOURCE" ) + check_type_size( off_t SIZEOF_OFF_T ) + tde_restore( CMAKE_REQUIRED_DEFINITIONS ) + if( SIZEOF_OFF_T GREATER 7 ) + set( LARGEFILES_DEFINITIONS "-D_LARGEFILE_SOURCE" ) + set( HAVE_LARGEFILES 1 ) + endif( ) + endif( ) + + # check for fseeko/ftello + if( HAVE_LARGEFILES ) + tde_save_and_set( CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} ${LARGEFILES_DEFINITIONS}" ) + check_symbol_exists( "fseeko" "stdio.h" HAVE_FSEEKO ) + tde_restore( CMAKE_REQUIRED_DEFINITIONS ) + if( NOT HAVE_FSEEKO ) + tde_save_and_set( CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} ${LARGEFILES_DEFINITIONS} -D_LARGEFILE_SOURCE" ) + check_symbol_exists( "fseeko" "stdio.h" HAVE_FSEEKO ) + tde_restore( CMAKE_REQUIRED_DEFINITIONS ) + if( HAVE_FSEEKO ) + set( LARGEFILES_DEFINITIONS "${LARGEFILES_DEFINITIONS} -D_LARGEFILE_SOURCE" ) + else( ) + unset( HAVE_LARGEFILES ) + endif( ) + endif( ) + endif( ) + + # check results + if( HAVE_LARGEFILES ) + if( "${LARGEFILES_DEFINITIONS}" STREQUAL "" ) + message( STATUS "Check support for large files - Success" ) + else( ) + add_definitions( ${LARGEFILES_DEFINITIONS} ) + message( STATUS "Check support for large files - Success with ${LARGEFILES_DEFINITIONS}" ) + endif( ) + set( HAVE_LARGEFILES 1 CACHE INTERNAL "Support for large files enabled" ) + else( ) + message( STATUS "Check support for large files - Failed" ) + tde_message_fatal( "Cannot find a way to enable support for large files." ) + endif( ) + endif( ) +endmacro( ) + + +################################################ +##### ##### Restore CMP0026 policy if( POLICY CMP0026 ) |