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| author | Brad King <brad.king@kitware.com> | 2022-11-17 15:15:55 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2022-11-18 16:44:52 (GMT) |
| commit | 914571a04249ee561a30309197d8e1c1cacbe18b (patch) | |
| tree | 81bcf00395d68dd29fe3099d4ba588ed7701ede1 /Help/release | |
| parent | ad16ae5c70778e6bfd6d30b17a3ad9b248b2a569 (diff) | |
| download | CMake-914571a04249ee561a30309197d8e1c1cacbe18b.zip CMake-914571a04249ee561a30309197d8e1c1cacbe18b.tar.gz CMake-914571a04249ee561a30309197d8e1c1cacbe18b.tar.bz2 | |
Place language standard flags just after CMAKE_<LANG>_FLAGS
Previously we added the language standard flag near the end of all
options, even after those added by `add_compile_options` and friends.
However, on some compilers such as MSVC, the `-std` flag may reset
defaults for flags that precede it on the command line. Move the
language standard flag to before all other flags that CMake adds for
other abstractions, and before those added by `add_compile_options`.
`CMAKE_<LANG>_FLAGS` should still precede the language flags though,
because they are meant to be treated as language-wide modifications to
the compiler defaults, similar to `$CC $CFLAGS`.
Fixes: #23860
Fixes: #24170
Diffstat (limited to 'Help/release')
| -rw-r--r-- | Help/release/dev/lang-std-flag-order.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Help/release/dev/lang-std-flag-order.rst b/Help/release/dev/lang-std-flag-order.rst new file mode 100644 index 0000000..4ef4123 --- /dev/null +++ b/Help/release/dev/lang-std-flag-order.rst @@ -0,0 +1,7 @@ +lang-std-flag-order +------------------- + +* :ref:`Language Standard Flags`, such as ``-std=c++11``, when generated due + to :command:`target_compile_features` or :variable:`CMAKE_<LANG>_STANDARD`, + are now placed before flags added by :command:`target_compile_options`, + rather than after them. |