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NOTE: when using rospack to find the mk-package, the ROS_PACKAGE_PATH needs to be set accordingly. Thus, you should have a dependency to roslib in your package.xml, as this provides the respective environment hooks that set this.

CMake-driven builds

Most packages, and all stacks, use CMake to build. But every package must provide a Makefile if it does any building. The following files are provided to simplify the Makefile in most packages, and all stacks:

• cmake.mk

• cmake_stack.mk

Use these files by including them, as explained in the rosbuild documentation and stack-building documentation.

3rdparty code, from tarball

For a 3rdparty package that pulls code from an tarball (or equivalent downloadable file), you should use download_unpack_build.mk, like so:

all: paramiko

TARBALL = build/paramiko-1.7.5.tar.gz
TARBALL_URL = https://pr.willowgarage.com/downloads/paramiko-1.7.5.tar.gz
SOURCE_DIR = build/paramiko-1.7.5
MD5SUM_FILE = paramiko-1.7.5.tar.gz.md5sum
UNPACK_CMD = tar xzf
include $(shell rospack find mk)/download_unpack_build.mk

paramiko: $(SOURCE_DIR)/unpacked
        mkdir -p src
        cd $(SOURCE_DIR) && python setup.py build 
        rm -rf src
        mv `python find_pylib.py paramiko $(SOURCE_DIR)/build/` src
        touch paramiko
clean:
        -rm -rf src $(SOURCE_DIR) paramiko
wipe: clean
        -rm -rf build

The following variables should be defined prior to including download_unpack_build.mk:

• TARBALL: local path to which the tarball should be downloaded; it must start with build/

• TARBALL_URL: fully-qualified URL from which to retrieve the tarball

• SOURCE_DIR: source directory that you want the tarball unpacked into; it must start with build/

• INITIAL_DIR (optional): the name that the tarball will naturally unpack into, if different from SOURCE_DIR; it must start with build/

• UNPACK_CMD (optional): the command to apply to the tarball to unpack it (default: tar xzf)

• MD5SUM_FILE (optional, but highly recommended): The name of a file containing the md5 hash of the tarball, in the format produced by the UNIX command md5sum

• TARBALL_PATCH (optional): a list of patch files to apply to the tarball after unpacking (e.g. 'TARBALL_PATCH = patch1.patch patch2.patch')

After including download_unpack_build.mk, you can make targets depend on the $(SOURCE_DIR)/unpacked file; it will be created (and updated) after the tarball has been downloaded, unpacked, and (optionally) patched.

Examples

Some packages that use download_unpack_build.mk:

• pycrypto

• gtest

• prosilica_gige_sdk

• sicktoolbox

3rdparty code, from SVN

For a 3rdparty package that pulls code from an SVN repository, you should use svn_checkout.mk, like so:

all: installed

SVN_DIR = build/stage-svn
SVN_URL = https://playerstage.svn.sourceforge.net/svnroot/playerstage/code/stage/branches/stage-ros
SVN_REVISION = -r 8262
include $(shell rospack find mk)/svn_checkout.mk

installed: $(SVN_DIR) patched Makefile.stage
        cd $(SVN_DIR) && autoreconf -i -s
        cd $(SVN_DIR) && ./configure --prefix=`pwd`/../..
        cd $(SVN_DIR) && make install
        touch installed

clean:
        -cd $(SVN_DIR) && make clean
        rm -rf stage installed patched

wipe: clean
        rm -rf $(SVN_DIR)

The following variables should be defined prior to including svn_checkout.mk:

• SVN_DIR: the name of the local working copy to be created

• SVN_URL: the URL of the repository to check out from

• SVN_REVISION (optional, but highly recommended): the revision to check out at, including the -r flag (e.g., -r 8262)

• SVN_CMDLINE (optional): how to invoke svn (useful if you want to pass extra arguments, e.g. svn --non-interactive)

• SVN_PATCH: list of patch files to apply to the working copy after checkout

After including svn_checkout.mk, you can make your targets depend on the patched file; it will be created after the working copy is checked out and (optionally) patched.

Examples

Some packages that use svn_checkout.mk:

• kdl

• gazebo

• opencv2

• cwiid

3rdparty code, from Git, Mercurial, Bazaar

Similar to svn_checkout.mk, there are also:

• git_checkout.mk

• hg_checkout.mk

• bzr_checkout.mk New in Fuerte

These are based on svn_checkout.mk, so you can generally use them by substituting the appropriate three-letter abbreviation for SVN.

Optimizing SVN

svn checkouts are both slow and more prone to downtime. A hybrid approach using the tarball for distribution, and a fancy makefile can be done with a script like the bullet package https://code.ros.org/svn/ros-pkg/stacks/geometry/tags/geometry-1.0.0/bullet/Makefile.bullet This uses the svn_checkout script to build the tarball when developing, but most users simply use the tarball.