I also had some trouble with yaml on my Mac. I solved it by installing py26-yaml: sudo port install py26-yaml I'm using python2.6 on OS X 10.6. Hope this helps! Gonçalo Cabrita ISR University of Coimbra Portugal On Sun, Mar 13, 2011 at 10:42 PM, S.Sudarshan wrote: > Hi, > > > I am trying to install ROS on a Macbook (early 2009) running Mac OS X > Leopard. I am unable to install Pyyaml. I also tried different things to get > it installed in different ways but still out of luck. I will list what I've > tried and what error I received. > > After running sudo easy_install -U pyyaml, I have the following output: > >> Searching for pyyaml >> Reading http://pypi.python.org/simple/pyyaml/ >> Reading http://pyyaml.org/wiki/PyYAML >> Best match: PyYAML 3.09 >> Downloading http://pyyaml.org/download/pyyaml/PyYAML-3.09.zip >> Processing PyYAML-3.09.zip >> Running PyYAML-3.09/setup.py -q bdist_egg --dist-dir /tmp/easy_install-ZJ-Kgs/PyYAML-3.09/egg-dist-tmp-4w-rDE >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:2:18: error: yaml.h: No such file or directory >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c: In function ‘main’: >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: ‘yaml_parser_t’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: (Each undeclared identifier is reported only once >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: for each function it appears in.) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: syntax error before ‘parser’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:6: error: ‘yaml_emitter_t’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:8: warning: implicit declaration of function ‘yaml_parser_initialize’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:8: error: ‘parser’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:9: warning: implicit declaration of function ‘yaml_parser_delete’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:11: warning: implicit declaration of function ‘yaml_emitter_initialize’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:11: error: ‘emitter’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:12: warning: implicit declaration of function ‘yaml_emitter_delete’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:2:18: error: yaml.h: No such file or directory >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c: In function ‘main’: >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: ‘yaml_parser_t’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: (Each undeclared identifier is reported only once >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: for each function it appears in.) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:5: error: syntax error before ‘parser’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:6: error: ‘yaml_emitter_t’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:8: warning: implicit declaration of function ‘yaml_parser_initialize’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:8: error: ‘parser’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:9: warning: implicit declaration of function ‘yaml_parser_delete’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:11: warning: implicit declaration of function ‘yaml_emitter_initialize’ >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:11: error: ‘emitter’ undeclared (first use in this function) >> build/temp.macosx-10.5-i386-2.5/check_libyaml.c:12: warning: implicit declaration of function ‘yaml_emitter_delete’ >> lipo: can't open input file: /var/tmp//cc9LRgKl.out (No such file or directory) >> libyaml is not found or a compiler error: forcing --without-libyaml >> (if libyaml is installed correctly, you may need to >> specify the option --include-dirs or uncomment and >> modify the parameter include_dirs in setup.cfg) >> zip_safe flag not set; analyzing archive contents... >> No eggs found in /tmp/easy_install-ZJ-Kgs/PyYAML-3.09/egg-dist-tmp-4w-rDE (setup script problem?) >> >> After this I tried several different ways to install pyyaml: > > 1) I installed libyaml using macports and got the same error. > > 2) I saw this http://pyyaml.org/ticket/94 ticket and tried to upgrade my > setuptools using macports (sudo port install py26-setuptools) and got the > following error: > >> ---> Computing dependencies for py26-setuptools >> ---> Activating py26-setuptools @0.6c11_1 >> Error: Target org.macports.activate returned: Image error: /opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin/easy_install already exists and does not belong to a registered port. Unable to activate port py26-setuptools. Use 'port -f activate py26-setuptools' to force the activation. >> Log for py26-setuptools is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_python_py26-setuptools/main.log >> Error: Status 1 encountered during processing. >> To report a bug, see >> >> When I tried to force activate it as suggested I got this: > > ---> Activating py26-setuptools >> Warning: File /opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin/easy_install already exists. Moving to: /opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin/easy_install.mp_1299764382. >> Warning: File /opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin/easy_install-2.6 already exists. Moving to: /opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin/easy_install-2.6.mp_1299764382. >> Error: port activate failed: can't create directory "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg-info": file already exists >> >> 3) Next I got the libyaml source and built it and installed it. After that > I tried to install pyyaml again. This time it didnt complain about libyaml > not being found, however it still gave me an error. The entire output is > quite long, but I got lots of warning about "differ in signedness" along > with the following error: > > ext/_yaml.c:17348: warning: pointer targets in passing argument 3 of ‘yaml_mapping_start_event_initialize’ differ in signedness >> ld warning: in /usr/local/lib/libyaml.dylib, file is not of required architecture >> zip_safe flag not set; analyzing archive contents... >> No eggs found in /tmp/easy_install-DpLGbQ/PyYAML-3.09/egg-dist-tmp-NONW0s (setup script problem?) >> >> Those are the last few lines of the output. I don't know how to solve this > problem, as I am not familiar with python's setuptools. > 4) Finally, I got the pyyaml-3.09 source and installed as per the > instructions. It installed without problems, > > running install >> running build >> running build_py >> running build_ext >> running install_lib >> running install_egg_info >> Removing /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/PyYAML-3.09-py2.6.egg-info >> >> Writing >> /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/PyYAML-3.09-py2.6.egg-info > > > > > However, as the next step in the ROS install, I ran this command as > described in the website" > http://packages.ros.org/cgi-bin/gen_rosinstall.py?rosdistro=diamondback&variant=ros-full&overlay=no"] > and I got the following error: > > Traceback (most recent call last): >> File "/usr/local/bin/rosinstall", line 5, in >> pkg_resources.run_script('rosinstall==0.5.16', 'rosinstall') >> File "/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/pkg_resources.py", line 442, in run_script >> self.require(requires)[0].run_script(script_name, ns) >> File "/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/pkg_resources.py", line 1167, in run_script >> exec script_code in namespace, namespace >> File "/usr/local/bin/rosinstall", line 23, in >> >> ImportError: No module named yaml >> >> which seems to indicate that pyyaml (or yaml?) is still not installed (or > its installed in a place where this command is not looking). Right now, I am > out of options, I don't know what else to try. I have issued this problem as > a new ticket on pyyaml.org website (http://pyyaml.org/ticket/186), however > I have not received any reply. > > Any help on this is greatly appreciated. > > Thanks, > S. > > > _______________________________________________ > ros-users mailing list > ros-users@code.ros.org > https://code.ros.org/mailman/listinfo/ros-users > >