Can`t assemble from src in msvs win about nuklear

[sevstels]

Incorrectly made "nuklear.h" header!
It is impossible to compile C code in a C++ project. Because an array of errors occurs:

1>gui.obj : error LNK2019: unresolved external symbol nk_buffer_init_default referenced in function nk_glfw3_device_create
1>gui.obj : error LNK2019: unresolved external symbol nk__draw_next referenced in function nk_glfw3_render
1>gui.obj : error LNK2019: unresolved external symbol nk__draw_begin referenced in function nk_glfw3_render
1>gui.obj : error LNK2019: unresolved external symbol nk_convert referenced in function nk_glfw3_render
1>gui.obj : error LNK2019: unresolved external symbol nk_init_default referenced in function nk_glfw3_init
1>gui.obj : error LNK2019: unresolved external symbol nk_font_atlas_begin referenced in function nk_glfw3_font_stash_begin
1>gui.obj : error LNK2019: unresolved external symbol nk_font_atlas_init_default referenced in function nk_glfw3_font_stash_begin
1>gui.obj : error LNK2019: unresolved external symbol nk_font_atlas_end referenced in function nk_glfw3_font_stash_end
1>gui.obj : error LNK2019: unresolved external symbol nk_font_atlas_bake referenced in function nk_glfw3_font_stash_end
1>gui.obj : error LNK2019: unresolved external symbol nk_font_atlas_clear referenced in function nk_glfw3_shutdown
1>fatal error LNK1120: 10 unresolved externals

The compiler cannot build the application if you do not declare: extern "C" { #include "nuklear.h"}
But in this case other errors occur.
Because templates are included in the header and this is not a C language, but C++

nuklear.h(5595): error C2894: templates cannot be declared to have 'C' linkage
nuklear.h(5596): error C2894: templates cannot be declared to have 'C' linkage
nuklear.h(5597): error C2894: templates cannot be declared to have 'C' linkage
nuklear.h(5598): error C2894: templates cannot be declared to have 'C' linkage

The extern "C" directive does not allow to compile such a header. As a result, we have an unsolvable situation....