2.3.x does not compile on Windows

[Yu Jin]

Hi,

Since 2.3.8 is around the corner I thought to try compiling the 2.3.x
branch but failed on Format.cpp, get these errors:

Build started at 22:05...
1>------ Build started: Project: LyX (applications\LyX\LyX), Configuration:
Debug x64 ------
1>Format.cpp
1>C:\lyx\master\src\Format.cpp(61,33): error C2504: 'unary_function': base
class undefined
1>C:\lyx\master\src\Format.cpp(61,47): error C2143: syntax error: missing
',' before '<'
1>C:\lyx\master\src\Format.cpp(75,38): error C2504: 'unary_function': base
class undefined
1>C:\lyx\master\src\Format.cpp(75,52): error C2143: syntax error: missing
',' before '<'
1>C:\lyx\master\src\Format.cpp(89,32): error C2504: 'unary_function': base
class undefined
1>C:\lyx\master\src\Format.cpp(89,46): error C2143: syntax error: missing
',' before '<'
1>C:\lyx\master\src\Format.cpp(608,18): warning C4244: 'return': conversion
from '__int64' to 'int', possible loss of data
1>Done building project "LyX.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
========== Build completed at 22:05 and took 00,762 seconds ==========

Any Ideas?
-- 
  Eugene
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