Failed to link with dynamic library in Windows for 3.0.1

[memsharded]

Hi!

I am able to link as static in Win, Linux, OSX (many different versions), and all but Windows as shared libraries. I am trying to create conan packages, so I have the infrastructure for building and linking from a test project easily. So the steps to reproduce would be:

$ git clone https://github.com/memsharded/conan-fmt
$ cd conan-fmt
$ git checkout master
$ conan test_package -s compiler="Visual Studio" -s compiler.version=14 -o fmt:shared=True
...
 example.obj : error LNK2019: unresolved external symbol "public: virtual __cdecl fmt::FormatError::~FormatError(void)" (??1F ormatError@fmt@@UEAA@XZ) referenced in function "public: virtual void * __cdecl fmt::FormatError::`scalar deleting destructor' (unsigned int)" (??_GFormatError@fmt@@UEAAPEAXI@Z) [C:\Users\memsharded\conanws\packages\conan-fmt\test_package\build\47ccd3369735 3124695963bca523d13fcb88e0b8\example.vcxproj]
 example.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: static int __cdecl fmt::internal::Cha rTraits<char>::format_float<long double>(char *,unsigned __int64,char const *,unsigned int,int,long double)" (__imp_??$format_ float@O@?$CharTraits@D@internal@fmt@@SAHPEAD_KPEBDIHO@Z) referenced in function "private: void __cdecl fmt::BasicWriter<char>: :write_double<long double>(long double,struct fmt::FormatSpec const &)" (??$write_double@O@?$BasicWriter@D@fmt@@AEAAXOAEBUForm atSpec@1@@Z) [C:\Users\memsharded\conanws\packages\conan-fmt\test_package\build\47ccd33697353124695963bca523d13fcb88e0b8\example.v cxproj]
 example.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: static int __cdecl fmt::internal::Cha rTraits<char>::format_float<double>(char *,unsigned __int64,char const *,unsigned int,int,double)" (__imp_??$format_float@N@?$ CharTraits@D@internal@fmt@@SAHPEAD_KPEBDIHN@Z) referenced in function "private: void __cdecl fmt::BasicWriter<char>::write_dou ble<double>(double,struct fmt::FormatSpec const &)" (??$write_double@N@?$BasicWriter@D@fmt@@AEAAXNAEBUFormatSpec@1@@Z) [C:\Use rs\memsharded\conanws\packages\conan-fmt\test_package\build\47ccd33697353124695963bca523d13fcb88e0b8\example.vcxproj]
 C:\Users\memsharded\conanws\packages\conan-fmt\test_package\build\47ccd33697353124695963bca523d13fcb88e0b8\bin\example.exe : fat al error LNK1120: 3 unresolved externals [C:\Users\memsharded\conanws\packages\conan-fmt\test_package\build\47ccd33697353124695963 bca523d13fcb88e0b8\example.vcxproj]

For static linking the output is:

$ conan test_package -s compiler="Visual Studio" -s compiler.version=14
...
> The answer is 42

The builds in appveyor and travis are:

• https://travis-ci.org/memsharded/conan-fmt/builds/239412421
• https://ci.appveyor.com/project/memsharded/conan-fmt/build/1.0.19

I am already adding the FMT_SHARED definition, and the problem seems to be the same in Debug mode too.

Please tell me if I can provide more information. Thanks very much!

[vitaut]

This has been fixed in #469 (included in version 3.0.2).