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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".
(1) Expand the file tl-win64.zip in $INSTALLDIR,
(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:
cjpeg.exe djpeg.exe gunzip.exe gzip.exe
jbig2.exe latexindent.exe png22pnm.exe sam2p.exe
tif22pnm.exe tlaunch.exe unzip.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.
The 64bit binaries are made with the latest sources. Therefore
several TeX engines may not be compatible with the present
TeX Live. Thus users should run the command
fmtutil-sys --all
--
Akira Kakuto
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