"error: ‘GLCD::cColor’ has not been declared" while compiling with graphlcd-base-0.1.9

[paolobormida]

While compiling on Debian GNU/Linux 11 (bullseye) with graphlcd-base-0.1.9 I get the following errors (in other following lines as well):

glcddriver.c: In member function ‘void cglcdDriver::Clear()’:
glcddriver.c:312:11: error: ‘GLCD::cColor’ has not been declared
312 | GLCD::cColor::White,
| ^~~~~~
glcddriver.c:326:69: error: ‘GLCD::cColor’ has not been declared
326 | m_pBitmap->DrawLine(i, 0, i, m_pDrv->Height(), Inversion(GLCD::cColor::White));
| ^~~~~~
glcddriver.c:329:69: error: ‘GLCD::cColor’ has not been declared
329 | m_pBitmap->DrawLine(i, 0, i, m_pDrv->Height(), Inversion(GLCD::cColor::White));
| ^~~~~~
glcddriver.c:332:124: error: ‘GLCD::cColor’ has not been declared
332 | m_pBitmap->DrawLine(m_nOffsetX + m_nPixShiftX, i, m_pDrv->Width() - m_nOffsetX + m_nPixShiftX - 1, i, Inversion(GLCD::cColor::White));
| ^~~~~~
glcddriver.c:335:124: error: ‘GLCD::cColor’ has not been declared
335 | m_pBitmap->DrawLine(m_nOffsetX + m_nPixShiftX, i, m_pDrv->Width() - m_nOffsetX + m_nPixShiftX - 1, i, Inversion(GLCD::cColor::White));
| ^~~~~~

Does anyone have a workaround?