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890d70856c
For consistency, specify the nanosecond option in the same way as other options, and identify it as such. Split the detection of platform support (`FindStatNsec`) and its selection (`SelectNsec`).
59 lines
2.1 KiB
CMake
59 lines
2.1 KiB
CMake
include(SanitizeBool)
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include(FeatureSummary)
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sanitizebool(USE_NSEC)
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if((USE_NSEC STREQUAL ON OR USE_NSEC STREQUAL "") AND HAVE_STRUCT_STAT_ST_MTIM)
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set(USE_NSEC "mtim")
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elseif((USE_NSEC STREQUAL ON OR USE_NSEC STREQUAL "") AND HAVE_STRUCT_STAT_ST_MTIMESPEC)
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set(USE_NSEC "mtimespec")
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elseif((USE_NSEC STREQUAL ON OR USE_NSEC STREQUAL "") AND HAVE_STRUCT_STAT_MTIME_NSEC)
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set(USE_NSEC "mtime_nsec")
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elseif((USE_NSEC STREQUAL ON OR USE_NSEC STREQUAL "") AND WIN32)
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set(USE_NSEC "win32")
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elseif(USE_NSEC STREQUAL "")
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message(WARNING "nanosecond timestamp precision was not detected")
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set(USE_NSEC OFF)
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elseif(USE_NSEC STREQUAL ON)
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message(FATAL_ERROR "nanosecond support was requested but no platform support is available")
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endif()
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if(USE_NSEC STREQUAL "mtim")
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if(NOT HAVE_STRUCT_STAT_ST_MTIM)
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message(FATAL_ERROR "stat mtim could not be found")
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endif()
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set(GIT_NSEC 1)
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set(GIT_NSEC_MTIM 1)
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add_feature_info("Nanosecond support" ON "using mtim")
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elseif(USE_NSEC STREQUAL "mtimespec")
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if(NOT HAVE_STRUCT_STAT_ST_MTIMESPEC)
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message(FATAL_ERROR "mtimespec could not be found")
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endif()
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set(GIT_NSEC 1)
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set(GIT_NSEC_MTIMESPEC 1)
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add_feature_info("Nanosecond support" ON "using mtimespec")
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elseif(USE_NSEC STREQUAL "mtime_nsec")
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if(NOT HAVE_STRUCT_STAT_MTIME_NSEC)
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message(FATAL_ERROR "mtime_nsec could not be found")
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endif()
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set(GIT_NSEC 1)
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set(GIT_NSEC_MTIME_NSEC 1)
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add_feature_info("Nanosecond support" ON "using mtime_nsec")
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elseif(USE_NSEC STREQUAL "win32")
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if(NOT WIN32)
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message(FATAL_ERROR "Win32 API support is not available on this platform")
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endif()
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set(GIT_NSEC 1)
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set(GIT_NSEC_WIN32 1)
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add_feature_info("Nanosecond support" ON "using Win32 APIs")
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elseif(USE_NSEC STREQUAL OFF)
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set(GIT_NSEC 0)
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add_feature_info("Nanosecond support" OFF "Nanosecond timestamp resolution is disabled")
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else()
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message(FATAL_ERROR "unknown nanosecond option: ${USE_NSEC}")
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endif()
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