我正在处理一个奇怪的问题。我有一个代码，需要在其中使用Boost typeindex框架来实现多个宏。由于我的宏仅包含在头文件中，因此我希望#include <boost/type_index.hpp>
仅包含在头文件中，如下所示：
#include <stdexcept>
#include <boost/type_index.hpp>
#ifdef L4N_DEBUG
#define ERR_MSG(msg) std::string(boost::typeindex::type_id_with_cvr<decltype(*this)>().pretty_name()) + "::" + __func__ + "(): " + msg + " (" +__FILE__ + ":" + std::to_string(__LINE__) + ")"
#else
#define ERR_MSG(msg) std::string(boost::typeindex::type_id_with_cvr<decltype(*this)>().pretty_name()) + "::" + __func__ + "(): " + msg
#endif // L4N_DEBUG
#define THROW_RUNTIME_ERROR(msg) std::runtime_error(ERR_MSG(msg))
#define THROW_LOGIC_ERROR(msg) std::logic_error(ERR_MSG(msg))
#define THROW_INVALID_ARGUMENT_ERROR(msg) std::invalid_argument(ERR_MSG(msg))
#define THROW_NOT_IMPLEMENTED_ERROR(msg) std::logic_error(ERR_MSG("This function is not implented." + msg))
但是我遇到了错误
/home/martin/MyProject/include/../src/DataSet/../Exception/Exceptions.h:9:10: fatal error: boost/type_index.hpp: No such file or directory
当我将include伪指令从Exceptions.h标头移到其中包含.cpp的{{1}}文件时，错误消失了。当然，我要指定包含路径，如下所示：
Exceptions.h 是否可以为add_library(
MyLib
${LIB_TYPE}
Neuron/Neuron.cpp
Neuron/NeuronBinary.cpp
Neuron/NeuronConstant.cpp
Neuron/NeuronLinear.cpp
Neuron/NeuronLogistic.cpp
Network/NeuralNetwork.cpp
Network/NeuralNetworkSum.cpp
NetConnection/ConnectionFunctionGeneral.cpp
NetConnection/ConnectionFunctionIdentity.cpp
LearningMethods/ParticleSwarm.cpp
LearningMethods/GradientDescent.cpp
DataSet/DataSet.cpp
ErrorFunction/ErrorFunctions.cpp
Solvers/DESolver.cpp
Exception/Exceptions.cpp
CSVReader/CSVReader.cpp
CrossValidator/CrossValidator.cpp
NormalizationStrategy/NormalizationStrategy.cpp
)
target_include_directories(
lib4neuro
PUBLIC
${ROOT_DIR}/include
PRIVATE
${EXPRTK_INCLUDE_DIR}
${SRC_DIR}
${Boost_INCLUDE_DIRS}
)
文件（不仅是.h文件）正确地指定包含路径？
答案 0 :(得分：0)
最终，仔细阅读整个错误消息很有帮助：
In file included from /home/martin/MyLib/include/../src/DataSet/DataSet.h:17,
from /home/martin/MyLib/include/myapi.h:10,
from /home/martin/MyLib/src/examples/net_test_1.cpp:12:
/home/martin/4Neuro/include/../src/DataSet/../Exception/Exceptions.h:9:10: fatal error: boost/type_index.hpp: No such file or directory
#include <boost/type_index.hpp>
我们可以看到，Exceptions.h被错误地包含在API的DataSet.h中。因此，当尝试使用该库在可执行文件中编译代码时，而不是在库本身的编译过程中，编译失败。