Here is the description of the binary file from the shared-mime-info spec: http://standards.freedesktop.org/shared-mime-info-spec/latest/ar01s02.html#idm140622087725744
On Tue, Feb 17, 2015 at 11:51 AM, Arnaud Vrac <raw...@gmail.com> wrote: > Commit fbeeaf2 in qtbase adds QT_NO_MIMETYPE: > > "The mime type stuff generates one of the biggest translation units in > QtCore due to the compressed 1.7MB freedesktop.org.xml resource. With > QT_NO_MIMETYPE, libQt5Core.so is almost 400Kb smaller (4.8MB->4.4MB gcc 4.9 > stripped release build)" > > It would be nice to be able to find a middle ground between disabling the > mime database completely and adding 1.7MB of data to Qt. The > update-mime-database binary from the shared-mime-info package can generate > a binary file from the XML, which is 100KB large and still allows finding > the mimetype of any file. The only difference with the XML is that you > don't have the translated pretty string for the mime type. The binary file > can also be mmapped and used for every request very efficiently, instead of > allocating all mime types data in memory. > > -- > Arnaud Vrac > -- Arnaud Vrac
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