.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.4.
.TH NUITKA "1" "January 2017" "nuitka 0.5.25" "User Commands"
.SH NAME
nuitka \- the Python compiler
.SH SYNOPSIS
.B nuitka
[\fI\,--module\/\fR] [\fI\,--execute\/\fR] [\fI\,options\/\fR] \fI\,main_module.py\/\fR
.SH OPTIONS
.TP
\fB\-\-version\fR
show program's version number and exit
.TP
\fB\-h\fR, \fB\-\-help\fR
show this help message and exit
.TP
\fB\-\-module\fR
Create an extension module executable instead of a
program. Defaults to off.
.TP
\fB\-\-standalone\fR, \fB\-\-portable\fR
Enable standalone mode in build. This allows you to
transfer the created binary to other machines without
it relying on an existing Python installation. It
implies these options: "\-\-recurse\-all \fB\-\-recursestdlib\fR". You may also want to use "\-\-pythonflag=no_site" to avoid the "site.py" module. Defaults
to off.
.TP
\fB\-\-nofreeze\-stdlib\fR
In standalone mode by default all modules of standard
library will be frozen as bytecode. This compiles them
all and as a result compilation time will increase
very much.
.TP
\fB\-\-python\-version\fR=\fI\,PYTHON_VERSION\/\fR
Major version of Python to be used, one of '2.6',
\&'2.7', '3.2', '3.3', '3.4', or '3.5'. Defaults to what
you run Nuitka with (currently 2.7)
.TP
\fB\-\-python\-debug\fR, \fB\-\-python\-dbg\fR
Use debug version or not. Default uses what you are
using to run Nuitka, most likely a non\-debug version.
.TP
\fB\-\-python\-flag\fR=\fI\,PYTHON_FLAGS\/\fR
Python flags to use. Default uses what you are using
to run Nuitka, this enforces a specific mode. These
are options that also exist to standard Python
executable. Currently supported: "\-S" (alias
"nosite"), "static_hashes" (not use hash
randomization), "no_warnings" (do not give Python
runtime warnings), "\-O" (alias "noasserts"). Default
empty.
.TP
\fB\-\-warn\-implicit\-exceptions\fR
Enable warnings for implicit exceptions detected at
compile time.
.TP
\fB\-\-warn\-unusual\-code\fR
Enable warnings for unusual code detected at compile
time.
.SS Control the recursion into imported modules:
.BR
.TP
\fB\-\-recurse\-stdlib\fR
Also descend into imported modules from standard
library. Defaults to off.
.TP
\fB\-\-recurse\-none\fR
When \fB\-\-recurse\-none\fR is used, do not descend into any
imported modules at all, overrides all other recursion
options. Defaults to off.
.TP
\fB\-\-recurse\-all\fR, \fB\-\-recurse\-on\fR
When \fB\-\-recurse\-all\fR is used, attempt to descend into
all imported modules. Defaults to off.
.TP
\fB\-\-recurse\-to\fR=\fI\,MODULE\/\fR/PACKAGE
Recurse to that module, or if a package, to the whole
package. Can be given multiple times. Default empty.
.TP
\fB\-\-recurse\-not\-to\fR=\fI\,MODULE\/\fR/PACKAGE
Do not recurse to that module, or if a package, to the
whole package in any case, overrides all other
options. Can be given multiple times. Default empty.
.TP
\fB\-\-recurse\-plugins\fR=\fI\,MODULE\/\fR/PACKAGE, \fB\-\-recurse\-directory\fR=\fI\,MODULE\/\fR/PACKAGE
Recurse into that directory, no matter if it's used by
the given main program in a visible form. Overrides
all other recursion options. Can be given multiple
times. Default empty.
.TP
\fB\-\-recurse\-files\fR=\fI\,PATTERN\/\fR, \fB\-\-recurse\-pattern\fR=\fI\,PATTERN\/\fR
Recurse into files matching the PATTERN. Overrides all
recursion other options. Can be given multiple times.
Default empty.
.SS Immediate execution after compilation:
.BR
.TP
\fB\-\-run\fR, \fB\-\-execute\fR
Execute immediately the created binary (or import the
compiled module). Defaults to off.
.TP
\fB\-\-debugger\fR, \fB\-\-gdb\fR
Execute inside "gdb" to automatically get a stack
trace. Defaults to off.
.TP
\fB\-\-execute\-with\-pythonpath\fR, \fB\-\-keep\-pythonpath\fR
When immediately executing the created binary
(\fB\-\-execute\fR), don't reset PYTHONPATH. When all modules
are successfully included, you ought to not need
PYTHONPATH anymore.
.SS Dump options for internal tree:
.BR
.TP
\fB\-\-dump\-xml\fR, \fB\-\-xml\fR
Dump the final result of optimization as XML, then
exit.
.TP
\fB\-\-display\-tree\fR
Display the final result of optimization in a GUI,
then exit.
.SS Code generation choices:
.BR
.TP
\fB\-\-full\-compat\fR
Enforce absolute compatibility with CPython. Do not
even allow minor deviations from CPython behavior,
e.g. better tracebacks, which are not really
incompatible, but different. This is intended for
tests only and should not be necessary for normal use.
.TP
\fB\-\-file\-reference\-choice\fR=\fI\,FILE_REFERENCE_MODE\/\fR
Select what value "__file__" is going to be. With
"runtime" (default for standalone binary mode and
module mode), the created binaries and modules, use
the location of themselves to deduct the value of
"__file__". Included packages pretend to be in
directories below that location. This allows you to
include data files in deployments. If you merely seek
acceleration, it's better for you to use the
"original" value, where the source files location will
be used. With "frozen" a notation "<frozen
module_name>" is used. For compatibility reasons, the
"__file__" value will always have ".py" suffix
independent of what it really is.
.SS Output directory choices:
.BR
.TP
\fB\-\-output\-dir\fR=\fI\,DIRECTORY\/\fR
Specify where intermediate and final output files
should be put. DIRECTORY will be populated with C++
files, object files, etc. Defaults to current
directory.
.TP
\fB\-\-remove\-output\fR
Removes the build directory after producing the module
or exe file. Defaults to off.
.SS Debug features:
.BR
.TP
\fB\-\-debug\fR
Executing all self checks possible to find errors in
Nuitka, do not use for production. Defaults to off.
.TP
\fB\-\-unstripped\fR, \fB\-\-no\-strip\fR, \fB\-\-unstriped\fR
Keep debug info in the resulting object file for
better debugger interaction. Defaults to off.
.TP
\fB\-\-profile\fR
Enable vmprof based profiling of time spent. Defaults
to off.
.TP
\fB\-\-graph\fR
Create graph of optimization process. Defaults to off.
.TP
\fB\-\-trace\-execution\fR
Traced execution output, output the line of code
before executing it. Defaults to off.
.TP
\fB\-\-recompile\-c\fR++\-only, \fB\-\-recompile\-c\-only\fR
Take existing files and compile them again.Allows
compiling edited C++ files with the C++ compiler for
quick debugging changes to the generated source.
Defaults to off. Depends on compiling Python source to
determine which files it should look at.
.TP
\fB\-\-generate\-c\fR++\-only
Generate only C++ source code, and do not compile it
to binary or module. This is for debugging and code
coverage analysis that doesn't waste CPU. Defaults to
off.
.TP
\fB\-\-experimental\fR
Use features declared as 'experimental'. May have no
effect if no experimental features are present in the
code. Defaults to off.
.SS Backend C++ compiler choice:
.BR
.TP
\fB\-\-clang\fR
Enforce the use of clang (needs clang 3.2 or higher).
Defaults to off.
.TP
\fB\-\-mingw\fR
Enforce the use of MinGW on Windows. Defaults to off.
.TP
\fB\-\-msvc\fR=\fI\,MSVC\/\fR
Enforce the use of specific MSVC version on Windows.
Allowed values are e.g. 9.0, 9.0exp, specify an
illegal value for a list of installed compilers.
Defaults to the most recent version.
.TP
\fB\-j\fR N, \fB\-\-jobs\fR=\fI\,N\/\fR
Specify the allowed number of parallel C++ compiler
jobs. Defaults to the system CPU count.
.TP
\fB\-\-lto\fR
Use link time optimizations if available and usable
(g++ 4.6 and higher). Defaults to off.
.SS Tracing features:
.BR
.TP
\fB\-\-show\-scons\fR
Operate Scons in non\-quiet mode, showing the executed
commands. Defaults to off.
.TP
\fB\-\-show\-progress\fR
Provide progress information and statistics. Defaults
to off.
.TP
\fB\-\-show\-memory\fR
Provide memory information and statistics. Defaults to
off.
.TP
\fB\-\-show\-modules\fR
Provide a final summary on included modules. Defaults
to off.
.TP
\fB\-\-verbose\fR
Output details of actions taken, esp. in
optimizations. Can become a lot. Defaults to off.
.SS Windows specific output control:
.BR
.TP
\fB\-\-windows\-disable\-console\fR
When compiling for Windows, disable the console
window. Defaults to off.
.TP
\fB\-\-windows\-icon\fR=\fI\,ICON_PATH\/\fR, \fB\-\-icon\fR=\fI\,ICON_PATH\/\fR
Add executable icon (Windows only).
.SS Plugin control:
.BR
.TP
\fB\-\-plugin\-enable\fR=\fI\,PLUGINS_ENABLED\/\fR, \fB\-\-enable\-plugin\fR=\fI\,PLUGINS_ENABLED\/\fR
Enabled plugins. Must be plug\-in names. Use \fB\-\-pluginlist\fR to query the full list and exit. Default empty.
.TP
\fB\-\-plugin\-disable\fR=\fI\,PLUGINS_DISABLED\/\fR, \fB\-\-disable\-plugin\fR=\fI\,PLUGINS_DISABLED\/\fR
Disabled plugins. Must be plug\-in names. Use \fB\-\-pluginlist\fR to query the full list and exit. Default empty.
.TP
\fB\-\-plugin\-no\-detection\fR
Plugins can detect if they might be used, and the you
can disable the warning via \fB\-\-plugin\-disable\fR=\fI\,pluginthat\-warned\/\fR, or you can use this option to disable the
mechanism entirely, which also speeds up compilation
slightly of course as this detection code is run in
vain once you are certain of which plug\-ins to use.
Defaults to off.
.SH EXAMPLES

Compile a python file "some_module.py" to a module "some_module.so":
.IP
\f(CW$ nuitka some_module.py\fR
.PP
Compile a python program "some_program.py" to an executable "some_program.exe":
.IP
\f(CW$ nuitka \-\-exe some_program.py\fR
.PP
Compile a python program "some_program.py" and the package "some_package" it
uses to an executable "some_program.exe":
.IP
\f(CW$ nuitka \-\-exe \-\-recurse\-to=some_package some_program.py\fR
.PP
Compile a python program "some_program.py" and all the modules it uses to an executable "some_program.exe". Then execute it immediately when ready:
.IP
\f(CW$ nuitka  \-\-exe \-\-execute \-\-recurse\-all some_program.py\fR
.PP
Compile a python program "some_program.py" and the modules it uses (even standard library) to an executable "some_program.exe":
.IP
\f(CW$ nuitka \-\-recurse\-all \-\-recurse\-stdlib some_program.py \-\-exe\fR
.PP
Compile a python program "some_program.py" and the modules it uses to an executable "some_program.exe". Keep the debug information, so valrind, gdb, etc. work
nice.

Note: This will *not* degrade performance:
.IP
\f(CW$ nuitka \-\-unstriped \-\-recurse\-all some_program.py \-\-exe\fR
.PP
Compile a python program "some_program.py" and the modules it uses to an executable "some_program.exe". Perform all kinds of checks about correctness of the generated
C++ and run\-time checks.

Note: This will degrade performance and should only be used to debug Nuitka:
.IP
\f(CW$ nuitka \-\-debug \-\-recurse\-all some_program.py \-\-exe\fR
.PP
Compile a python program "some_program.py" and the modules it uses to an executable "some_program.exe". Perform all kinds of checks about correctness of the generated
C++ and run\-time checks. Also use the debug Python library, which does its own checks.

Note: This will degrade performance and should only be used to debug Nuitka:
.IP
\f(CW$ nuitka \-\-debug \-\-python-debug \-\-recurse\-all some_program.py \-\-exe\fR
.PP
Compile a python program "some_program.py" and the plugins modules it loads at run time to an executable "some_program.exe":
.IP
\f(CW$ nuitka \-\-recurse\-all \-\-recurse\-directory=plugins_dir some_program.py \-\-exe\fR
.PP