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Author: Vagrant Cascadian <vagrant@reproducible-builds.org>
Description: Use UTC timezone for build timestamp
While CMake respects SOURCE_DATE_EPOCH, it still can produce a
different date depending on the timezone of the running system.
Specify timezone in UTC to enable a reproducible build.
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,7 +49,7 @@
set(GENERATOR_IS_MULTI_CONFIG TRUE)
endif()
-string(TIMESTAMP DEFAULT_BUILD "%Y%m%d")
+string(TIMESTAMP DEFAULT_BUILD "%Y%m%d" UTC)
set(BUILD ${DEFAULT_BUILD} CACHE STRING "Build string (default: ${DEFAULT_BUILD})")
# NOTE: On Windows, this does nothing except when using MinGW or Cygwin.
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