diff options
| author | Brad King <brad.king@kitware.com> | 2019-10-16 14:32:56 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2019-10-16 14:32:56 (GMT) |
| commit | ac75886525c647ef7081dc11f6c0c128463b7ecd (patch) | |
| tree | d34cfd6a5d869bc0674bd2252a165ccb610a8702 /Help/command | |
| parent | 9150c818b7d2afb868575fcb2e0c9ba62b9d7f85 (diff) | |
| download | CMake-ac75886525c647ef7081dc11f6c0c128463b7ecd.zip CMake-ac75886525c647ef7081dc11f6c0c128463b7ecd.tar.gz CMake-ac75886525c647ef7081dc11f6c0c128463b7ecd.tar.bz2 | |
PCH: Document and test COMPILE_LANGUAGE genex for per-language header
Fixes: #19839
Diffstat (limited to 'Help/command')
| -rw-r--r-- | Help/command/target_precompile_headers.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Help/command/target_precompile_headers.rst b/Help/command/target_precompile_headers.rst index 3a32f41..d283948 100644 --- a/Help/command/target_precompile_headers.rst +++ b/Help/command/target_precompile_headers.rst @@ -47,6 +47,9 @@ with the syntax ``$<...>``. See the :manual:`cmake-generator-expressions(7)` manual for available expressions. See the :manual:`cmake-compile-features(7)` manual for information on compile features and a list of supported compilers. +The ``$<COMPILE_LANGUAGE:...>`` generator expression is particularly +useful for specifying a language-specific header to precompile for +only one language (e.g. ``CXX`` and not ``C``). Usage ^^^^^ @@ -56,6 +59,7 @@ Usage target_precompile_headers(<target> PUBLIC project_header.h + "$<$<COMPILE_LANGUAGE:CXX>:cxx_only.h>" PRIVATE [["other_header.h"]] <unordered_map> |