Hello, I am trying to compile ginac and cln on Windows. For compilation I used Cygwin env, cl compiler (MSVC v142). Version I use: -cln 1.3.6 -ginac 1.8.6, but with this fix: I following this instruction mainly: https://ooo-imath.sourceforge.io/wiki/index.php/Compiling_under_Windows Cln is compiled successfully. For GINAC compilation I have some errors not desribed in instruction above: 1. ./configure required: /std:c++20 parameter as it is complaining during compilation 2. symbol differences that I am not able to solve. They are related to Cln: ginac.lib(libginac_la-numeric.obj) : error LNK2019: nierozpoznany symbol zewnętrzny "struct cln::cl_heap_string * __cdecl cl_make_heap_string(char const *)" (?cl_make_heap_string@@YAPEAUcl_heap_string@cln@@PEBD@Z) przywołany w funkcji "public: __cdecl cln::cl_string::cl_string(char const *)" (??0cl_string@cln@@QEAA@PEBD@Z) Wskazówki dla symboli, które są zdefiniowane i mogą potencjalnie pasować: "struct cln::cl_heap_string * __cdecl cln::cl_make_heap_string(char const *)" (?cl_make_heap_string@cln@@YAPEAUcl_heap_string@1@PEBD@Z) .libs\viewgar.exe : fatal error LNK1120: liczba nierozpoznanych elementów zewnętrznych: 1 It can be seen that both symbols differs only with class prefix at the beginning ::cln (it is in existing symbol in cln lib but not in looked one in ginac) Do anybody knows how to solve this link issue? Thank you in advance, Best regards, Piotr -- Ta wiadomość e-mail została sprawdzona pod kątem wirusów przez oprogramowanie antywirusowe Avast. www.avast.com