Commit Graph

11 Commits

Author SHA1 Message Date
Stephen Kelly dd043c3f21 Features: Add support for C++14 features.
Record the features implemented by GNU 4.9 and Clang 3.4.
2014-05-22 18:01:23 +02:00
Brad King f1d504d6cd Merge topic 'GNU-4.7-features'
9cbc63e4 Features: Record for GNU 4.7.
2014-05-08 11:28:03 -04:00
Stephen Kelly 9cbc63e40c Features: Record for GNU 4.7.
Update the CompileFeatures test to verify that unsupported features
do not work.
2014-05-07 22:02:02 +02:00
Stephen Kelly 1df2116bfa Features: Decay language flag if requested is not available.
Use the highest standard compile flags available if requested language
version is too new.

This supports use-cases like

 set(CMAKE_CXX_STANDARD 14)

 # Compiled with -std=c++11 with GNU 4.7, which has no -std=c++14
 # or equivalent flag
 add_executable(main main.cpp)

This can be used in combination with preprocessor defines which
communicate the availability of certain language features for
optional use.
2014-05-07 12:17:49 +02:00
Stephen Kelly c4f4dac2d5 Project: Fix exit-on-error with compile feature tests. 2014-05-07 12:16:14 +02:00
Stephen Kelly a36b957fc4 Features: Add cxx_template_template_parameters.
Extend the existing feature infrastructure as needed to support
both C++11 and C++98 features.
2014-04-16 15:16:23 +02:00
Stephen Kelly f97bf4370c Features: Add cxx_auto_type.
Record the availability of this feature for GNU 4.8 on (UNIX AND
NOT APPLE) only.  In the future, availability can be recorded for
earlier GNU, for other platforms and for other compilers. Initially
the affected configurations are as restricted as possible to allow
for easy testing while extending the features vector in only one
dimension.

The error message when using the set_property API directly is not
very good, but follow up commits will provide origin debugging of
the property and a target_compile_features command which will
provide a configure-time backtrace when possible.
2014-04-07 18:11:18 +02:00
Stephen Kelly 8238a6cd5d Add some COMPILE_OPTIONS for specifying C++ dialect.
These are compiler-specific, compiler version specific, extension specific
and standard version specific.
2014-04-07 16:48:44 +02:00
Stephen Kelly cd1fa537a0 Add a COMPILE_OPTION for a VISIBILITY_INLINES_HIDDEN target property.
This corresponds to the g++ and clang++
option -fvisibility-inlines-hidden on linux. On Windows with MinGW,
this corresponds to -fno-keep-inline-dllexport. That option is
not supported by clang currently.
2013-06-02 12:00:51 +02:00
Brad King e28c16b482 Split GNU compiler information files
This moves GNU compiler flags into new-style modules

  Compiler/GNU-<lang>.cmake
  Platform/<os>-GNU-<lang>.cmake

We use language-independent helper modules

  Compiler/GNU.cmake
  Platform/<os>-GNU.cmake

to define macros consolidating the information.
2009-12-02 09:52:00 -05:00
Brad King 07ea19ad1f ENH: Implicit link info for C, CXX, and Fortran
This teaches CMake to detect implicit link information for C, C++, and
Fortran compilers.  We detect the implicit linker search directories and
implicit linker options for UNIX-like environments using verbose output
from compiler front-ends.  We store results in new variables called

  CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES
  CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES

The implicit libraries can contain linker flags as well as library
names.
2009-07-23 10:07:25 -04:00