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Make sure LargeFileSupport flags are set correctly after repeated calls to cmake/ccmake/cmake-gui (#2039)

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Co-authored-by: Mike Gelfand <mikedld@users.noreply.github.com>
Co-authored-by: Charles Kerr <charles@charleskerr.com>
This commit is contained in:
Frank Aurich
2021-10-26 21:14:35 +02:00
committed by GitHub
parent b797b4c94f
commit c369f23686
1 changed files with 9 additions and 6 deletions
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15
cmake/LargeFileSupport.cmake
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@@ -18,16 +18,19 @@ if(NOT DEFINED NO_LFS_MACROS_REQUIRED)
if(NOT NO_LFS_MACROS_REQUIRED)
if(NOT DEFINED FILE_OFFSET_BITS_LFS_MACRO_REQUIRED)
check_c_source_compiles("#define _FILE_OFFSET_BITS 64 ${LFS_TEST_PROGRAM}" FILE_OFFSET_BITS_LFS_MACRO_REQUIRED)
if(FILE_OFFSET_BITS_LFS_MACRO_REQUIRED)
add_definitions(-D_FILE_OFFSET_BITS=64)
elseif(NOT DEFINED LARGE_FILES_LFS_MACRO_REQUIRED)
if(NOT FILE_OFFSET_BITS_LFS_MACRO_REQUIRED AND NOT DEFINED LARGE_FILES_LFS_MACRO_REQUIRED)
check_c_source_compiles("#define _LARGE_FILES 1 ${LFS_TEST_PROGRAM}" LARGE_FILES_LFS_MACRO_REQUIRED)
if(LARGE_FILES_LFS_MACRO_REQUIRED)
add_definitions(-D_LARGE_FILES=1)
endif()
endif()
endif()
endif()
unset(LFS_TEST_PROGRAM)
endif()
if(FILE_OFFSET_BITS_LFS_MACRO_REQUIRED)
add_definitions(-D_FILE_OFFSET_BITS=64)
endif()
if(LARGE_FILES_LFS_MACRO_REQUIRED)
add_definitions(-D_LARGE_FILES=1)
endif()