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How to install 64bit binaries for TeX Live on Windows
In the following, $INSTALLDIR is $SELFAUTOPARENT in the TeX Live,
that is, the parent directory of "texmf-dist". Actually the
directory $INSTALLDIR is shown by a command:
kpsewhich --var-value=SELFAUTOPARENT
(1) Expand the file tl-win64.zip in $INSTALLDIR.
In the case of update, remove all files in $INSTALLDIR/bin/win64
before expanding tl-win64.zip, because it is possible that
some files are deleted in a new tl-win64.zip.
(2) After expanding tl-win64.zip in $INSTALLDIR,
change related command PATH from
$INSTALLDIR\bin\win32
to
$INSTALLDIR\bin\win64;$INSTALLDIR\bin\win32
Note that the following 32bit binaries in $INSTALLDIR\bin\win32
are still used on WOW64:
jbig2.exe latexindent.exe psviewer.exe tex2xindy.exe
texindy.exe tlaunch.exe tlshell.exe unzip.exe
xindy.exe xindy-lisp.exe xindy.mem zip.exe
Moreover, tlmgr.bat does not exist in $INSTALLDIR\bin\win64
due to an obvious reason.
Thus $INSTALLDIR\bin\win32 is necessary "after"
$INSTALLDIR\bin\win64.
If there are problems in 64bit binaries, it is easy to recover
the original TeX Live win32, by changing back the PATH:
$INSTALLDIR\bin\win64;$INSTALLDIR\bin\win32 --->
$INSTALLDIR\bin\win32
(3) Ghostscript is assumed to be 64bit. The dvisvgm.exe searches
for gsdll64.dll by reading registry, and gsftopk.exe searches
for gsdll64.dll in the command PATH. Therefore users should
install 64bit Ghostscript and set the command PATH for the
Ghostscript. However, don't define TEXLIVE_WINDOWS_EXTERNAL_GS
in texmf.cnf, because the preinstalled 32bit Ghostscript is
also used in several cases.
gs9550w64full-gpl.exe in this directory is Ghostscript 9.55.0
for 64bit Windows compiled with COMPILE_INITS=0. Users can install
their favorite 'traineddata' files obtained from
https://github.com/tesseract-ocr/tessdata_best
into the predefined directory Resource/Tesseract in order to use
ocr devices. Three files, eng.traineddata, jpn.traineddata
and jpn_vert.traineddata, are already installed as examples.
The eng.traineddata is the default for ocr devices.
From TeX Live 2020, the version of 64bit binaries will be
synchronized with that of 32bit binaries. It is expected that
common format files can be usable for 32bit/64bit binaries.
--
Akira Kakuto
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