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Merge branch 'doc-pch-compile-language' into release-3.16

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Merge-request: !3925
This commit is contained in:
Brad King
2019-10-16 10:54:11 -04:00
parent c2a7729177 ac75886525
commit 84e14a52ff
3 changed files with 22 additions and 1 deletions
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4
Help/command/target_precompile_headers.rst
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@@ -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>