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| author | Reiner Herrmann <reiner@reiner-h.de> | 2016-05-14 10:30:36 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2016-05-17 14:12:11 (GMT) |
| commit | edcccde7d65944b3744c4567bd1d452211829702 (patch) | |
| tree | ee784327c065d207b0fa24e7cf32078a6c82e68c /Tests/RunCMake/file/GLOB.cmake | |
| parent | d9fd2f5402eeaa345691313658e02b51038f570b (diff) | |
| download | CMake-edcccde7d65944b3744c4567bd1d452211829702.zip CMake-edcccde7d65944b3744c4567bd1d452211829702.tar.gz CMake-edcccde7d65944b3744c4567bd1d452211829702.tar.bz2 | |
file: Sort GLOB results to make it deterministic (#14491)
Even though the `file(GLOB)` documentation specifically warns against
using it to collect a list of source files, projects often do it anyway.
Since it uses `readdir()`, the list of files will be unsorted.
This list is often passed directly to add_executable / add_library.
Linking binaries with an unsorted list will make it unreproducible,
which means that the produced binary will differ depending on the
unpredictable `readdir()` order.
To solve those reproducibility issues in a lot of programs (which don't
explicitly `list(SORT)` the list manually), sort the resulting list of
the `file(GLOB)` command.
A more detailed rationale about reproducible builds is available
[here](https://reproducible-builds.org/).
Diffstat (limited to 'Tests/RunCMake/file/GLOB.cmake')
| -rw-r--r-- | Tests/RunCMake/file/GLOB.cmake | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/Tests/RunCMake/file/GLOB.cmake b/Tests/RunCMake/file/GLOB.cmake index 3d577e3..c524e42 100644 --- a/Tests/RunCMake/file/GLOB.cmake +++ b/Tests/RunCMake/file/GLOB.cmake @@ -12,17 +12,14 @@ file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/test/dir 2/non_empty_dir/dir 2 subdir fi file(GLOB CONTENT_LIST "${CMAKE_CURRENT_BINARY_DIR}/test/*/*") list(LENGTH CONTENT_LIST CONTENT_COUNT) message("content: ${CONTENT_COUNT} ") -list(SORT CONTENT_LIST) message("${CONTENT_LIST}") file(GLOB CONTENT_LIST LIST_DIRECTORIES true "${CMAKE_CURRENT_BINARY_DIR}/test/*/*") list(LENGTH CONTENT_LIST CONTENT_COUNT) message("content: ${CONTENT_COUNT} ") -list(SORT CONTENT_LIST) message("${CONTENT_LIST}") file(GLOB CONTENT_LIST LIST_DIRECTORIES false "${CMAKE_CURRENT_BINARY_DIR}/test/*/*") list(LENGTH CONTENT_LIST CONTENT_COUNT) message("content: ${CONTENT_COUNT} ") -list(SORT CONTENT_LIST) message("${CONTENT_LIST}") |