conan create¶
$ conan create -h
WARN: Downgrading cache from Conan 2.3.2 to 2.0.17
usage: conan create [-h] [-v [V]] [-f FORMAT] [--name NAME]
[--version VERSION] [--user USER] [--channel CHANNEL]
[-l LOCKFILE] [--lockfile-partial]
[--lockfile-out LOCKFILE_OUT] [--lockfile-packages]
[--lockfile-clean]
[--lockfile-overrides LOCKFILE_OVERRIDES] [-b BUILD]
[-r REMOTE | -nr] [-u] [-pr PROFILE] [-pr:b PROFILE_BUILD]
[-pr:h PROFILE_HOST] [-pr:a PROFILE_ALL] [-o OPTIONS]
[-o:b OPTIONS_BUILD] [-o:h OPTIONS_HOST]
[-o:a OPTIONS_ALL] [-s SETTINGS] [-s:b SETTINGS_BUILD]
[-s:h SETTINGS_HOST] [-s:a SETTINGS_ALL] [-c CONF]
[-c:b CONF_BUILD] [-c:h CONF_HOST] [-c:a CONF_ALL]
[--build-require] [-tf TEST_FOLDER] [-bt BUILD_TEST]
path
Create a package.
positional arguments:
path Path to a folder containing a recipe (conanfile.py)
options:
-h, --help show this help message and exit
-v [V] Level of detail of the output. Valid options from less
verbose to more verbose: -vquiet, -verror, -vwarning,
-vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
-vvv or -vtrace
-f FORMAT, --format FORMAT
Select the output format: json
--name NAME Provide a package name if not specified in conanfile
--version VERSION Provide a package version if not specified in
conanfile
--user USER Provide a user if not specified in conanfile
--channel CHANNEL Provide a channel if not specified in conanfile
-l LOCKFILE, --lockfile LOCKFILE
Path to a lockfile. Use --lockfile="" to avoid
automatic use of existing 'conan.lock' file
--lockfile-partial Do not raise an error if some dependency is not found
in lockfile
--lockfile-out LOCKFILE_OUT
Filename of the updated lockfile
--lockfile-packages Lock package-id and package-revision information
--lockfile-clean Remove unused entries from the lockfile
--lockfile-overrides LOCKFILE_OVERRIDES
Overwrite lockfile overrides
-b BUILD, --build BUILD
Optional, specify which packages to build from source.
Combining multiple '--build' options on one command
line is allowed. Possible values: --build="*" Force
build from source for all packages. --build=never
Disallow build for all packages, use binary packages
or fail if a binary package is not found, it cannot be
combined with other '--build' options. --build=missing
Build packages from source whose binary package is not
found. --build=cascade Build packages from source that
have at least one dependency being built from source.
--build=[pattern] Build packages from source whose
package reference matches the pattern. The pattern
uses 'fnmatch' style wildcards. --build=~[pattern]
Excluded packages, which will not be built from the
source, whose package reference matches the pattern.
The pattern uses 'fnmatch' style wildcards.
--build=missing:[pattern] Build from source if a
compatible binary does not exist, only for packages
matching pattern.
-r REMOTE, --remote REMOTE
Look in the specified remote or remotes server
-nr, --no-remote Do not use remote, resolve exclusively in the cache
-u, --update Will check the remote and in case a newer version
and/or revision of the dependencies exists there, it
will install those in the local cache. When using
version ranges, it will install the latest version
that satisfies the range. Also, if using revisions, it
will update to the latest revision for the resolved
version range.
-pr PROFILE, --profile PROFILE
Apply the specified profile. By default, or if
specifying -pr:h (--profile:host), it applies to the
host context. Use -pr:b (--profile:build) to specify
the build context, or -pr:a (--profile:all) to specify
both contexts at once
-pr:b PROFILE_BUILD, --profile:build PROFILE_BUILD
-pr:h PROFILE_HOST, --profile:host PROFILE_HOST
-pr:a PROFILE_ALL, --profile:all PROFILE_ALL
-o OPTIONS, --options OPTIONS
Apply the specified options. By default, or if
specifying -o:h (--options:host), it applies to the
host context. Use -o:b (--options:build) to specify
the build context, or -o:a (--options:all) to specify
both contexts at once. Example: -o pkg:with_qt=true
-o:b OPTIONS_BUILD, --options:build OPTIONS_BUILD
-o:h OPTIONS_HOST, --options:host OPTIONS_HOST
-o:a OPTIONS_ALL, --options:all OPTIONS_ALL
-s SETTINGS, --settings SETTINGS
Apply the specified settings. By default, or if
specifying -s:h (--settings:host), it applies to the
host context. Use -s:b (--settings:build) to specify
the build context, or -s:a (--settings:all) to specify
both contexts at once. Example: -s compiler=gcc
-s:b SETTINGS_BUILD, --settings:build SETTINGS_BUILD
-s:h SETTINGS_HOST, --settings:host SETTINGS_HOST
-s:a SETTINGS_ALL, --settings:all SETTINGS_ALL
-c CONF, --conf CONF Apply the specified conf. By default, or if specifying
-c:h (--conf:host), it applies to the host context.
Use -c:b (--conf:build) to specify the build context,
or -c:a (--conf:all) to specify both contexts at once.
Example: -c tools.cmake.cmaketoolchain:generator=Xcode
-c:b CONF_BUILD, --conf:build CONF_BUILD
-c:h CONF_HOST, --conf:host CONF_HOST
-c:a CONF_ALL, --conf:all CONF_ALL
--build-require Whether the package being created is a build-require
(to be used as tool_requires() by other packages)
-tf TEST_FOLDER, --test-folder TEST_FOLDER
Alternative test folder name. By default it is
"test_package". Use "" to skip the test stage
-bt BUILD_TEST, --build-test BUILD_TEST
Same as '--build' but only for the test_package
requires. By default if not specified it will take the
'--build' value if specified
The conan create command creates a package from the recipe specified in path.
This command will first export the recipe to the local cache and then build
and create the package. If a test_package folder (you can change the folder name with
the -tf argument) is found, the command will run the consumer project to ensure that
the package has been created correctly. Check testing Conan packages section to know more about how to test your Conan packages.
Tip
Sometimes you want to skip/disable the test stage. In that case you can skip/disable
the test package stage by passing an empty value as the -tf argument:
$ conan create . --test-folder=
Using conan create with build requirements¶
The --build-require argument allows to create the package using the configuration and
settings of the “build” context, as it was a build_require. This feature allows to
create packages in a way that is consistent with the way they will be used later.
$ conan create . --name=cmake --version=3.23.1 --build-require
Conan create output¶
The conan create ... --format=json creates a json output containing the full dependency graph information.
This json is the same as the one created with conan graph info (see the graph info json format)
with extended information about the binaries, like a more complete cpp_info field.
This resulting json is the dependency graph of the package recipe being created, excluding all the test_package and other possible dependencies of the test_package/conanfile.py. These dependencies only exist in the test_package functionality, and as such, are not part of the “main” product or package. If you are interested in capturing the dependency graph including the test_package (most likely not necessary in most cases), then you can do it running the conan test command separately.
The same happens for lockfiles created with --lockfile-out argument. The lockfile will only contain the created package and its transitive dependencies versions, but it will not contain the test_package or the transitive dependencies of the test_package/conanfile.py. It is possible to capture a lockfile which includes those with the conan test command (though again, this might not be really necessary)
Note
Best practice
In general, having test_package/conanfile.py with dependencies other than the tested
one should be avoided. The test_package functionality should serve as a simple check
to ensure the package is correctly created. Adding extra dependencies to
test_package might indicate that the check is not straightforward or that its
functionality is being misused. If, for any reason, your test_package has additional
dependencies, you can control their build using the --build-test argument.
See also
Read more about creating packages in the dedicated tutorial