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detect the presence of std::shared_ptr

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since GCC 4.4 supports it, make it mandatory as well...
This commit is contained in:
Andreas Lauser 2013-08-08 12:31:07 +02:00 committed by Roland Kaufmann
parent bddcff89f2
commit 999d198181
1 changed files with 17 additions and 0 deletions
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17
cmake/Modules/FindCXX11Features.cmake
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@ -3,6 +3,7 @@
#
# Sets the follwing variable:
#
# HAVE_SHARED_PTR True if std::shared_ptr is available
# HAVE_NULLPTR True if nullptr is available
# HAVE_ARRAY True if header <array> and fill() are available
# HAVE_ATTRIBUTE_ALWAYS_INLINE True if attribute always inline is supported
@ -43,6 +44,18 @@ endif(CXX_FLAG_CXX11)
# perform tests
include(CheckCXXSourceCompiles)
# nullptr
CHECK_CXX_SOURCE_COMPILES("
#include <memory>
int main(void)
{
std::shared_ptr<int> foo(new int(123));
return 0;
}
" HAVE_SHARED_PTR
)
# nullptr
CHECK_CXX_SOURCE_COMPILES("
int main(void)
@ -296,6 +309,10 @@ endforeach(_HEADER tuple tr1/tuple tr1/type_traits)
# superset of those provided by GCC 4.4. This makes the test fail on
# all GCC compilers before 4.4.
set(CXX_FEATURES_MISSING "")
if (NOT HAVE_SHARED_PTR)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Shared pointers (the std::shared_ptr class)\n")
endif()
if (NOT HAVE_ARRAY)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Statically sized arrays (the std::array class)\n")