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* Features: Fix the default C dialect for Clang and GNU.Stephen Kelly2014-11-201-2/+5
| | | | | | | | | | | | | | Clang 3.4 uses C99 by default, and Clang 3.6 uses C11 by default: http://thread.gmane.org/gmane.comp.compilers.clang.devel/39379 GNU 4.9 uses C90 by default, and GNU 5.0 uses C11 by default: https://gcc.gnu.org/gcc-5/changes.html Test that the default compiler settings result in the expected dialect macros being defined for both C and CXX. Remove the unused main.c file from the CompileFeatures unit test.
* Features: Extend concept to C language.Stephen Kelly2014-05-141-0/+32
| | | | | | | | | | | 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.
* Split GNU compiler information filesBrad King2009-12-021-1/+2
| | | | | | | | | | | | | | 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.
* ENH: Implicit link info for C, CXX, and FortranBrad King2009-07-231-0/+1
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.