This fixes several gcc warnings:
warning:
type qualifiers ignored on function return type [-Wignored-qualifiers]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
gcc reported this warning:
../training/stringrenderer.cpp:
In member function ‘void tesseract::StringRenderer::SetLayoutProperties()’:
../training/stringrenderer.cpp:211:42: warning:
ISO C++ forbids converting a string constant to ‘char*’ [-Wwrite-strings]
set_features("liga, clig, dlig, hlig");
^
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This enables all OpenType ligatures for a specific font, where
available. Specifically, it explicitly enables the OpenType
features liga (standard ligatures), hlig (historical ligatures),
clig (contextual ligatures), and dlig (discretionary ligatures).
This feature requires Pango 1.38 or newer.
