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Features: Extend concept to C language.

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Add properties and variables corresponding to CXX equivalents.

Add features for c_function_prototypes (C90), c_restrict (C99),
c_variadic_macros (C99) and c_static_assert (C11). This feature
set can be extended later.

Add a <PREFIX>_RESTRICT symbol define to WriteCompilerDetectionHeader
to conditionally represent the c_restrict feature.
This commit is contained in:
Stephen Kelly
2013-11-04 01:15:43 +01:00
parent 775458dede
commit e0890d03a4
57 changed files with 630 additions and 27 deletions
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3
Help/command/target_compile_features.rst
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@@ -8,7 +8,8 @@ Add expected compiler features to a target.
target_compile_features(<target> <PRIVATE|PUBLIC|INTERFACE> <feature> [...])
Specify compiler features required when compiling a given target. If the
feature is not listed in the :variable:`CMAKE_CXX_COMPILE_FEATURES` variable,
feature is not listed in the :variable:`CMAKE_C_COMPILE_FEATURES` variable
or :variable:`CMAKE_CXX_COMPILE_FEATURES` variable,
then an error will be reported by CMake. If the use of the feature requires
an additional compiler flag, such as ``-std=c++11``, the flag will be added
automatically.