c++ 与 gtest 和 boost 的命名空间冲突
如果我同时包含 gtest/gtest.h 和 boost/math/distributions/poisson.hpp 我会得到
/opt/local/include/boost/tr1/tuple.hpp:63: error: ‘tuple’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:67: error: ‘make_tuple’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:72: error: ‘tuple_size’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:73: error: ‘tuple_element’ is already declared in this scope
如何防止这两个库命名空间发生冲突？
If I include both gtest/gtest.h and boost/math/distributions/poisson.hpp I get
/opt/local/include/boost/tr1/tuple.hpp:63: error: ‘tuple’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:67: error: ‘make_tuple’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:68: error: ‘tie’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:72: error: ‘tuple_size’ is already declared in this scope
/opt/local/include/boost/tr1/tuple.hpp:73: error: ‘tuple_element’ is already declared in this scope
How do I prevent these two library namespaces from colliding?
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尝试使用定义的
BOOST_HAS_TR1_TUPLE进行构建。 看起来 boost 和您的std库都在定义std::tr1::tuple并且我不知道如何禁用std版本。 查看 boost 标头，似乎需要定义BOOST_HAS_TR1_TUPLE来告诉 booststd::tr1::tuple已经定义。当我尝试编译包含这两个标头的文件时，我遇到了与您类似的错误，然后当我定义
BOOST_HAS_TR1_TUPLE时，它们消失了。Try building with
BOOST_HAS_TR1_TUPLEdefined. It looks like both boost and yourstdlibraries are definingstd::tr1::tupleand I can't see how to disable thestdversion. Looking at the boost header though it appears thatBOOST_HAS_TR1_TUPLEneeds to be defined to tell boost thatstd::tr1::tupleis already defined.I got similar errors to yours when I tried to compile a file including both those headers and then they disappeared when I defined
BOOST_HAS_TR1_TUPLE.您是否尝试过切换包含的顺序？ 其他头文件可能会更优雅地处理事情。
Have you tried switching the order of the includes? It is possible the other header file handles things a little more gracefully.
在 gtest.h 中将 gtest 设置 GTEST_HAS_TR1_TUPLE 为 0 对我的情况有帮助
With gtest setting GTEST_HAS_TR1_TUPLE to 0 in gtest.h helped in my case
为了能够在 Microsoft Visual Studio 2010 中包含 boost/math/distributions/fisher_f.hpp，
我需要定义
BOOST_NO_0X_HDR_TUPLE以及BOOST_HAS_TR1_TUPLE。To be able to include boost/math/distributions/fisher_f.hpp in Microsoft Visual Studio 2010,
I needed to define
BOOST_NO_0X_HDR_TUPLEas well asBOOST_HAS_TR1_TUPLE.