Commit Graph

3 Commits

Author SHA1 Message Date
Zsolt Parragi
d625dfcdf9 Avoid compiling CMake itself as C++17 with Clang's MSVC ABI
GUID functions in ATL cause compilation errors with this compiler.
Add the offending case to our check for C++17 support so that it
is not used by default when it does not work.
2019-02-11 15:04:19 +01:00
Brad King
3a2c736b41 Extend C++17/C++14 feature checks to require unique_ptr
When testing compiler modes higher than C++11 for constructs we need,
include a check for using `unique_ptr` in that mode.  The PGI 18.4
compiler in some environments supports `unique_ptr` in C++11 mode
but is broken for C++14 and C++17.  Check that `unique_ptr` works
in these modes before using one.
2018-08-01 14:03:43 -04:00
Brad King
31d59ff3b1 Compile CMake as C++17 if supported by the compiler
Add a check that a simple source file can compile as C++17 that uses
some of the features we need.  Do this only when hosted by CMake 3.8
or above because those versions are aware of C++17.

Check for unordered_map as we do in bootstrap since commit 375eca7881
(bootstrap: Check support for unordered_map from compiler mode,
2017-11-30).  Also maintain the existing C++14 cstdio check.
2017-12-22 09:05:54 -05:00