The code in ccutil/hashfn.h was needed for some old compilers. Now that we support MSVC >= 2010 and compilers that has good support for C++11, we can drop this code.
As a result of this file removal, we now use:
std::unordered_map
std::unordered_set
std::unique_ptr
directly in the codebase with '#include' for the needed headers.
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.
