How to checkout 5.12.8 to add Qtmqtt library

[rajel052]

qmake
Usage: /usr/lib/qt5/bin/qmake [mode] [options] [files]

QMake has two modes, one mode for generating project files based on
some heuristics, and the other for generating makefiles. Normally you
shouldn't need to specify a mode, as makefile generation is the default
mode for qmake, but you may use this to test qmake on an existing project

Mode:
-project Put qmake into project file generation mode
In this mode qmake interprets [files] as files to
be added to the .pro file. By default, all files with
known source extensions are added.
Note: The created .pro file probably will
need to be edited. For example add the QT variable to
specify what modules are required.
-makefile Put qmake into makefile generation mode (default)
In this mode qmake interprets files as project files to
be processed, if skipped qmake will try to find a project
file in your current working directory

Warnings Options:
-Wnone Turn off all warnings; specific ones may be re-enabled by
later -W options
-Wall Turn on all warnings
-Wparser Turn on parser warnings
-Wlogic Turn on logic warnings (on by default)
-Wdeprecated Turn on deprecation warnings (on by default)

Options:

• You can place any variable assignment in options and it will be *
• processed as if it was in [files]. These assignments will be *
• processed before [files] by default. *
  -o file Write output to file
  -d Increase debug level
  -t templ Overrides TEMPLATE as templ
  -tp prefix Overrides TEMPLATE so that prefix is prefixed into the value
  -help This help
  -v Version information
  -early All subsequent variable assignments will be
  parsed right before default_pre.prf
  -before All subsequent variable assignments will be
  parsed right before [files] (the default)
  -after All subsequent variable assignments will be
  parsed after [files]
  -late All subsequent variable assignments will be
  parsed right after default_post.prf
  -norecursive Don't do a recursive search
  -recursive Do a recursive search
  -set <prop> <value> Set persistent property
  -unset <prop> Unset persistent property
  -query <prop> Query persistent property. Show all if <prop> is empty.
  -qtconf file Use file instead of looking for qt.conf
  -cache file Use file as cache [makefile mode only]
  -spec spec Use spec as QMAKESPEC [makefile mode only]
  -nocache Don't use a cache file [makefile mode only]
  -nodepend Don't generate dependencies [makefile mode only]
  -nomoc Don't generate moc targets [makefile mode only]
  -nopwd Don't look for files in pwd [project mode only]
  latitude-3510:/home/oem/Qt/5.15.2/gcc_64/lib/qtmqtt# make
  make: *** No targets specified and no makefile found. Stop.

[SGaist]

Hi,

Your question is already being answered in this thread of yours.

Please don't open several threads for the same subject.

Closing this one.