[PROJ] unresolved external symbol EARTH (windows)

[Javier Jimenez Shaw]

This issue is about the same topic:
https://github.com/OSGeo/PROJ/issues/1821
that "stale" closed after 2 months of inactivity.

.___ ._ ..._ .. . ._.  .___ .. __ . _. . __..  ... .... ._ .__
Entre dos pensamientos racionales
hay infinitos pensamientos irracionales.



On Wed, 14 Jul 2021 at 12:56, Even Rouault <even.rouault at spatialys.com>
wrote:

> Javier,
>
> the symbol is CPL_DLL exported and defined in static.cpp. You don't
> mention which type of linking you use: dynamic / static.
>
> You may perhaps need to define PROJ_MSVC_DLL_IMPORT.
>
> See the following in proj.h
>
> #ifndef PROJ_DLL
> #ifdef PROJ_MSVC_DLL_EXPORT
> #define PROJ_DLL __declspec(dllexport)
> #elif defined(PROJ_MSVC_DLL_IMPORT)
> #define PROJ_DLL __declspec(dllimport)
> #elif defined(__GNUC__)
> #define PROJ_DLL __attribute__ ((visibility("default")))
> #else
> #define PROJ_DLL
> #endif
> #endif
>
> Even
>
>
> Le 14/07/2021 à 12:33, Javier Jimenez Shaw a écrit :
>
> Hi all
>
> I am using PROJ 8.1.0 in C++ in a library. While linking the unit test in
> Windows (no problem in Ubuntu or macOS), I get this error message:
>
> psrs.lib(SrsCatalog.cpp.obj) : error LNK2019: unresolved external symbol
> "public: static class std::basic_string<char,struct
> std::char_traits<char>,class std::allocator<char> > const
> osgeo::proj::datum::Ellipsoid::EARTH" (?EARTH at Ellipsoid@datum at proj@osgeo@
> @2V?$basic_string at DU?$char_traits at D@std@@V?$allocator at D@2@@std@@B)
> referenced in function "public: void __cdecl
> pd::srs::SrsCatalog::Impl::populate(void)" (?populate at Impl@SrsCatalog at srs
> @pd@@QEAAXXZ)
>
> In the same function I am using proj methods like getCRSInfoList or
> createCoordinateReferenceSystem, but not another constant.
>
> Do I have to do anything special to use/link that? Or is it a problem in
> PROJ?
> This happens in the CI machine. I do not have a Windows local computer to
> reproduce it.
>
> I solved it easily not using the variable
> osgeo::proj::datum::Ellipsoid::EARTH, but the string "Earth". However, it
> could be interesting if there is any problem in proj code.
>
> Thanks,
> Javier
> .___ ._ ..._ .. . ._.  .___ .. __ . _. . __..  ... .... ._ .__
> Entre dos pensamientos racionales
> hay infinitos pensamientos irracionales.
>
>
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>
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