我正在开发一个Python ++库使用Boost Python的一个C绑定。 为了避免分配Boost库的问题，我使用的是静态版本。 它工作在Linux和MacOSX的罚款，但在Windows中，仍需要Python的依赖。 我CMakeLists.txt设置为：
if((${CMAKE_SYSTEM_NAME} STREQUAL "Linux") OR APPLE)
target_link_libraries(my_python_module ${Boost_LIBRARIES})
elseif(WIN32 AND MSVC)
add_definitions(/DBOOST_PYTHON_STATIC_LIB) # This is also required to force the usage of libboost_python37-vc141-mt-x64-1_70.lib instead of boost_python37-vc141-mt-x64-1_70.lib
target_link_libraries(my_python_module ${Boost_LIBRARIES}) # This includes the Boost Python library
# Even though Boost Python library is included statically, in Windows it has a dependency to the Python library.
target_link_libraries(my_python_module ${Python_LIBRARIES})
endif()
因此，因为在Windows中，如果删除target_link_libraries(my_python_module ${Python_LIBRARIES})线，我得到一个：
LINK : fatal error LNK1104: Can't open file 'python37.lib'
我得到的DLL的确已经Python作为一个依赖关系：
C:\PythonModule\bin\Release\Release>"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64\dumpbin.exe" /DEPENDENTS my_python_module.dll
Microsoft (R) COFF/PE Dumper Version 14.16.27031.1
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file my_python_module.dll
File Type: DLL
Image has the following dependencies:
python37.dll <------- HERE
MSVCP140.dll
VCRUNTIME140.dll
api-ms-win-crt-runtime-l1-1-0.dll
api-ms-win-crt-heap-l1-1-0.dll
KERNEL32.dll
Summary
B000 .data
3000 .pdata
18000 .rdata
1000 .reloc
1000 .rsrc
27000 .text
由于我使用升压静态库，该过程针对链接libboost_python37-vc141-mt-x64-1_70.lib ，不boost_python37-vc141-mt-x64-1_70.lib （其相关联的动态库的库模块， boost_python37-vc141-mt-x64-1_70.dll ）。 我可以传递到Visual Studio中的命令行上检查这个（感谢-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON ）：
Link:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX86\x64\link.exe /ERRORREPORT:QUEUE /OUT:"C:\PythonModule\bin\Release\Release\my_python_module.dll" /INCREMENTAL:NO /NOLOGO "C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_filesystem-vc141-mt-x64-1_70.lib"
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_program_options-vc141-mt-x64-1_70.lib"
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_python37-vc141-mt-x64-1_70.lib" <------- HERE
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_thread-vc141-mt-x64-1_70.lib"
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_system-vc141-mt-x64-1_70.lib"
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_stacktrace_windbg-vc141-mt-x64-1_70.lib"
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_chrono-vc141-mt-x64-1_70.lib"
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_date_time-vc141-mt-x64-1_70.lib"
"C:\local\boost_1_70_0\lib64-msvc-14.1\libboost_atomic-vc141-mt-x64-1_70.lib"
"C:\Program Files\Python37\libs\python37.lib"
kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib /MANIFEST /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /manifest:embed /PDB:"C:/PythonModule/lib/Release/Release/my_python_module.pdb" /SUBSYSTEM:CONSOLE /TLBID:1 /DYNAMICBASE /NXCOMPAT /IMPLIB:"C:/PythonModule/lib/Release/Release/my_python_module.lib" /MACHINE:X64 /machine:x64 /IGNORE:4049,4217 /DLL my_python_module.dir\Release\my_python_module.obj
Creating library C:/PythonModule/lib/Release/Release/my_python_module.lib and object C:/PythonModule/lib/Release/Release/my_python_module.exp
my_python_module.vcxproj -> C:\PythonModule\bin\Release\Release\my_python_module.dll
顺便说一句，这些都是官方提供的二进制文件的升压，顺便说一句，从获得https://dl.bintray.com/boostorg/release/1.70.0/binaries/boost_1_70_0-msvc-14.1-64.exe
静态升压Python库不必依赖到Python，据我可以检查：
C:\local\boost_1_70_0\lib64-msvc-14.1>"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64\dumpbin.exe" /DEPENDENTS libboost_python37-vc141-mt-x64-1_70.lib
Microsoft (R) COFF/PE Dumper Version 14.16.27031.1
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file libboost_python37-vc141-mt-x64-1_70.lib
File Type: LIBRARY
Summary
100 .CRT$XCU
35A .bss
17EF8 .chks64
DD0 .data
CFE .data$r
1804 .debug$S
23B5 .drectve
5B20 .pdata
9FD3 .rdata
EF8 .rdata$r
4DB .text$di
32D89 .text$mn
3F59 .text$x
608 .text$yd
11C10 .xdata
4C0 .xdata$x
虽然共享的一个作用：
C:\local\boost_1_70_0\lib64-msvc-14.1>"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64\dumpbin.exe" /DEPENDENTS boost_python37-vc141-mt-x64-1_70.dll
Microsoft (R) COFF/PE Dumper Version 14.16.27031.1
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file boost_python37-vc141-mt-x64-1_70.dll
File Type: DLL
Image has the following dependencies:
python37.dll <------- HERE
MSVCP140.dll
KERNEL32.dll
VCRUNTIME140.dll
api-ms-win-crt-runtime-l1-1-0.dll
api-ms-win-crt-heap-l1-1-0.dll
Summary
3000 .data
3000 .pdata
18000 .rdata
1000 .reloc
1000 .rsrc
1D000 .text
所以，我的主要问题是：
为什么，如果我使用了Boost Python库的静态版本，我仍然有Python的依赖？
我不以任何其他方式在模块中直接使用Python，和在Linux中，这样的依赖不存在。
非常感谢你的帮助。
