Eryk Sun <eryk...@gmail.com> added the comment: > on Windows, the rpath mechanism doesn't exist
It seems we can locate a dependent assembly up to two directories up from a DLL using a relative path. According to MSDN [1], this is supported in Windows 7+. 3.7 no longer supports Vista, so this can potentially be used for extension modules in 3.7. I tested that it works in Windows 10, at least. [1]: https://msdn.microsoft.com/en-us/library/aa374182 Create a "<name>.2.config" file for the module (e.g. "myextension.pyd.2.config"), and include a "probing" path in this file. This can specify up to 9 relative directories that can be up to two levels above the module. For example, the following adds "..\.libs" to the DLL's private assembly search path: <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <configuration> <windows> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <probing privatePath="..\.libs" /> </assemblyBinding> </windows> </configuration> Add dependent assemblies to the module's #2 embedded manifest. For example, here's a dependency on 64-bit "myassembly" version 1.0.000.1234: <dependency> <dependentAssembly> <assemblyIdentity name="myassembly" version="1.0.000.1234" type="win32" processorArchitecture="amd64" /> </dependentAssembly> </dependency> I this case the assembly is a directory with the given assembly name that contains an "<assembly_name>.manifest" file (e.g. "myassembly.manifest"). This manifest lists the assembly DLLs that are in the directory. For example: <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> <assemblyIdentity name="myassembly" version="1.0.000.1234" type="win32" processorArchitecture="amd64" /> <file name="mylib1.dll" /> <file name="mylib2.dll" /> </assembly> The loader will look for the assembly in WinSxS, the module's directory, a subdirectory named for the assembly, and then the private probing paths that were added by the module's config file. ---------- nosy: +eryksun _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32516> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
