clang -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -march=x86-64 -mtune=generic -O2 -pipe -O3 -march=x86-64 -mtune=generic -O2 -pipe -O3 -march=x86-64 -mtune=generic -O2 -pipe -D__USE_MINGW_ANSI_STDIO=1 -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_backends__tkagg_ARRAY_API -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -D__STDC_FORMAT_MACROS=1 -Iextern/agg24-svn/include -Isrc -ID:/M/msys64/clang64/lib/python3.10/site-packages/numpy/core/include -ID:/M/msys64/clang64/include/python3.10 -c src/_tkagg.cpp -o build/temp.mingw_x86_64_clang-3.10/matplotlib.backends._tkagg/src/_tkagg.o
  src/_tkagg.cpp:234:15: error: cannot initialize a variable of type 'void *' with an rvalue of type 'FARPROC' (aka 'long long (*)()')
      if (void* ptr = dlsym(lib, "Tcl_SetVar")) {
                ^     ~~~~~~~~~~~~~~~~~~~~~~~~
  src/_tkagg.cpp:273:13: note: in instantiation of function template specialization 'load_tcl_tk<HINSTANCE__ *>' requested here
          if (load_tcl_tk(modules[i])) {
              ^
  src/_tkagg.cpp:237:15: error: cannot initialize a variable of type 'void *' with an rvalue of type 'FARPROC' (aka 'long long (*)()')
      if (void* ptr = dlsym(lib, "Tk_FindPhoto")) {
                ^     ~~~~~~~~~~~~~~~~~~~~~~~~~~
  src/_tkagg.cpp:240:15: error: cannot initialize a variable of type 'void *' with an rvalue of type 'FARPROC' (aka 'long long (*)()')
      if (void* ptr = dlsym(lib, "Tk_PhotoPutBlock")) {
                ^     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  3 errors generated.

  gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -march=x86-64 -mtune=generic -O2 -pipe -O3 -march=x86-64 -mtune=generic -O2 -pipe -O3 -march=x86-64 -mtune=generic -O2 -pipe -D__USE_MINGW_ANSI_STDIO=1 -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_backends__tkagg_ARRAY_API -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -D__STDC_FORMAT_MACROS=1 -Iextern/agg24-svn/include -Isrc -ID:/M/msys64/ucrt64/lib/python3.10/site-packages/numpy/core/include -ID:/M/msys64/ucrt64/include/python3.10 -c src/_tkagg.cpp -o build/temp.mingw_x86_64_ucrt-3.10/matplotlib.backends._tkagg/src/_tkagg.o
  src/_tkagg.cpp: In instantiation of 'bool load_tcl_tk(T) [with T = HINSTANCE__*]':
  src/_tkagg.cpp:273:24:   required from here
  src/_tkagg.cpp:234:26: error: invalid conversion from 'FARPROC' {aka 'long long int (*)()'} to 'void*' [-fpermissive]
    234 |     if (void* ptr = dlsym(lib, "Tcl_SetVar")) {
        |                          ^
        |                          |
        |                          FARPROC {aka long long int (*)()}
  src/_tkagg.cpp:237:26: error: invalid conversion from 'FARPROC' {aka 'long long int (*)()'} to 'void*' [-fpermissive]
    237 |     if (void* ptr = dlsym(lib, "Tk_FindPhoto")) {
        |                          ^
        |                          |
        |                          FARPROC {aka long long int (*)()}
  src/_tkagg.cpp:240:26: error: invalid conversion from 'FARPROC' {aka 'long long int (*)()'} to 'void*' [-fpermissive]
    240 |     if (void* ptr = dlsym(lib, "Tk_PhotoPutBlock")) {
        |                          ^
        |                          |
        |                          FARPROC {aka long long int (*)()}