forked from bartvdbraak/blender
bbfcb0b1e4
Using unordered_map and unordered_set C++ container types currently requires careful testing or usage of boost, due to the various confusing C++ version differences in include paths and namespaces. Libmv defines tests for these cases in cmake and scons, such that ceres can use any available implementation, or fall back too std::map/std::set if none can be found. This patch generalizes this buildfile code by providing a Blender macro. * cmake: defines both the variables used by libmv at them moment as well as 2 variables UNORDERED_MAP_INCLUDE_PREFIX and UNORDERED_MAP_NAMESPACE, which can later be used in other C++ parts for convenience. * scons: adds a tool script returning the include prefix and namespace. Libmv checks these to define the appropriate definitions for ceres. Differential Revision: https://developer.blender.org/D425
33 lines
1.4 KiB
Python
33 lines
1.4 KiB
Python
def test_unordered_map(conf):
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"""
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Detect unordered_map availability
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Returns (True/False, namespace, include prefix)
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"""
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if conf.CheckCXXHeader("unordered_map"):
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# Even so we've found unordered_map header file it doesn't
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# mean unordered_map and unordered_set will be declared in
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# std namespace.
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#
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# Namely, MSVC 2008 have unordered_map header which declares
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# unordered_map class in std::tr1 namespace. In order to support
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# this, we do extra check to see which exactly namespace is
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# to be used.
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if conf.CheckType('std::unordered_map<int, int>', language = 'CXX', includes="#include <unordered_map>"):
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print("-- Found unordered_map/set in std namespace.")
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return True, 'std', ''
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elif conf.CheckType('std::tr1::unordered_map<int, int>', language = 'CXX', includes="#include <unordered_map>"):
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print("-- Found unordered_map/set in std::tr1 namespace.")
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return True, 'std::tr1', ''
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else:
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print("-- Found <unordered_map> but can not find neither std::unordered_map nor std::tr1::unordered_map.")
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return False, '', ''
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elif conf.CheckCXXHeader("tr1/unordered_map"):
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print("-- Found unordered_map/set in std::tr1 namespace.")
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return True, 'std::tr1', 'tr1/'
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else:
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print("-- Unable to find <unordered_map> or <tr1/unordered_map>. ")
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return False, '', ''
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