mkgmap command line options

Hey guys,
Can someone point me to the page that has Lambertus’s command line options for mkgmap please?

I’ve seen it before many times and I’m damned if I can find it.
I’m sat in Thailand with the laptop having left most of my stuff on the desktop at home, doh!

Thanks in advance.


java -jar mkgmap.jar --help=options

General options:

Print help on the given topic. If the topic is omitted then a
list of all the help topics is printed instead.

Output program version.

Read input data from the give file. This option (or just a
filename) may be given more than once.

Write a gmapsupp.img file that can be uploaded to a Garmin or
placed in “/Garmin” in a microSD card (such as by mounting the
device in USB mass storage mode).
TODO: explain if this is in addition to or instead of the
per-input files.

-c filename
The given file is opened and each line is an option setting of
the form option=value, any option that could be used on the command
line can be used, however you omit the leading ‘–’. The short
option names with a single ‘-’ cannot be used, simply use the
long name instead.

-n name
Set the name of the map. Garmin maps are named by 8 digit
numbers. The default is 63240001. It is best to use a different
name if you are going to be making a map for others to use so
that it is unique and does not clash with others.

Sets the descriptive text for the map. This may be displayed in
QLandkarte, MapSource on on a GPS etc.

Sets the map’s country name. The default is “COUNTRY”.

Sets the map’s abbreviated country name. The default is “ABC”.

Sets the map’s region name. By default, the map has no region name.

Sets the map’s abbreviated region name. By default, the map has
no abbreviated region name.

Label options:

This option allows the use of non-ascii characters in street
names. It is hardware dependant what is actually supported on
a particular device. Some devices can only do ascii characters
for example.

Mkgmap goes to some length to convert un-displayable characters
however and by default (without this option) it will transliterate
characters to unaccented ascii characters where possible.

This is equivalent to --charset=utf8.

TODO: is one really supposed to give two single quotes?
Write the given code page number to the header of the LBL file.
Some examples on the mailing list use --code-page=1252.
TODO: explain what this does, and why one would or would not want
to do it.

Allow labels to contain lower case letters. Note that this
doesn’t work on many (most, all?) Garmin devices.

Style options:

Specify a different style name, rather than the default value
(which is the word default).

Specify an external file to obtain the style from. “file” can
be a directory containing files such as info, lines, options
(see resources/styles/default for an example). The directory
path must be absolute or relative to the current working
directory when mkgmap is invoked.

The file can be a zip file instead of a directory.  TODO-check
this: In this case, the zip file should contain directories
with styles, and the style 'default' will be used, unless the
--style option is also given to select a different one.

The argument can also be a URL, in which case TODO.

For backward compatibility, you can also supply a
map-features.csv file here.  See the customisation help.

List the available styles.

–levels=levels code
Change the way that the levels on the map correspond to the
zoom levels in the device. See customisation help. The default
is the equivalent of: “0=24, 1=22, 2=21, 3=19, 4=18, 5=16”
although this may change.

Get the tag that will be used to supply the name. Useful for
language variations. You can supply a list and the first one
will be used. eg. --name-tag-list=name:en,int_name,name

This option is obsolete; use the --style-file option instead.

Product description options:

This is an integer that identifies a family of products.

If you build several maps, this option describes the
family name of all of your maps. Garmin will display this
in the map selection screen.
Example: --family-name=“OpenStreetmap mkgmap XL 2019”
TODO: at least the “-” character seems to have a strange
effect on the family name; latin-alphabet and digits seem
safe, but other characters should be checked.

This is an integer that identifies a product within a family.
It is often just 1.


If --tdbfile is enabled, this gives the name of the overview
.img and .tdb files. The default map name is OSM_map

–overview-mapnumber=8 digit number
If --tdbfile is enabled, this gives the internal 8 digit
number used in the overview map and tdb file. The default
number is 63240000.

Miscellaneous options:

When number is specified, allow that number of maps to be
processed concurrently. If number is not specified, the limit
is set equal to the number of CPU cores. If this option is not
given at all, the limit is 1 (i.e., the maps are processed

Don’t quit whole application if an exception occurs while
processing a job - continue to process the other jobs.

Changes the block size that is used in the generated map.
TODO: explain what this meant
Use of this option is not recommended.

Create maps that supports the “lock to road” option.

Experimental: Create maps that support routing. This implies --net
(so that --net need not be given if --route is given).

When reading OSM files, ignore any “maxspeed” tags.

When reading OSM files, ignore any “restriction” relations.

When reading OSM files, ignore any “bounds” elements.

Process the map elements (nodes, ways, relations) in the order
in which they appear in the OSM input. Without this option,
the order in which the elements are processed is not defined.

Merge nodes to remove short arcs that can cause routing
problems. If MinLength is specified (in metres), arcs shorter
than that length will be removed. If a length is not
specified, only zero-length arcs will be removed.

Generate a POI for each named road. By default, the POIs’
Garmin type code is 0x640a. If desired, a different type code
can be specified with this option. This is a workaround for not
being able to search for roads.

Generate a POI for each area. The POIs are created after the
style is applied and only for polygon types that have a
reasonable point equivalent.

Generate the POI index (not yet useful).

Turn on all of the options that make cycleways.

Some oneway streets allow bicycle traffic in the reverse
direction and this option makes a way with the same points as
the original that allows bicycle traffic (in both directions).

Some streets have a separate cycleway track/lane just for
bicycle traffic and this option makes a way with the same
points as the original that allows bicycle traffic. Also,
bicycle traffic is prohibited from using the original way
(unless that way’s bicycle access has been defined).

If this option is enabled, POIs that are situated at a point
in a way will be associated with that way and may modify the
way’s properties. Currently supported are POIs that restrict
access (e.g. bollards). Their access restrictions are applied
to a small region of the way near the POI.

Write a .tdb file.

When two maps cover the same area, this option controls what
order they are drawn in and therefore which map is on top of
which. Higher priorities are drawn “on top” of lower

Make the map transparent, so that if two maps are loaded that
cover the same area, you can see through this map and see the
lower map too. Useful for contour line maps among other

Disable address / phone information to POIs. Address info is
read according to the “Karlsruhe” tagging schema. Automatic
filling of missing information could be enabled using the
“location-autofill” option.

Suppress the normal generation of sorted road data. This will
make the map quicker to build but the find address or
intersection functions will be lost.

Controls how country region info is gathered for cities /
streets and pois

0 	(Default) The country region info is gathered by
	analysis of the cities is_in tags.

	If no country region info is present the default
	passed default country region is used.
1	Additional analysis of partial is_in info to get
	relations between hamlets and cities

2	Brute force search for nearest city with info if all
	methods before failed. Warning cities my end up in the
	wrong country/region.
3	Enables debug output about suspicious relations that
	might cause wrong country region info

The following Windows batch file writes the options to a text file you can review at your leisure. Edit the path to mkgmap and the text file name as needed.

java.exe -Xmx512M -jar “c:\program files\mkgmap\mkgmap.jar” --help=options > mkgmap_options.txt

Thanks, that link was exactly what I needed :slight_smile: