Hello,
When I run catkin_make in a ros workspace, it output:

CMake Error at CMakeLists.txt:20 (message): Search for 'catkin' in workspace failed (catkinfindpkg catkin /home/ubuntu/workspace/05.usbcamcalibrate/src): Traceback (most recent call last):

File "/usr/bin/catkinfindpkg", line 5, in from pkgresources import loadentrypoint
File "/usr/local/lib/python2.7/dist-packages/pkgresources/init.py", line 72, in import packaging.requirements
File "/usr/local/lib/python2.7/dist-packages/packaging/requirements.py", line 59, in MARKEREXPR = originalTextFor(MARKEREXPR())("marker")

TypeError: call() takes exactly 2 arguments (1 given)

-- Configuring incomplete, errors occurred!

I have remove ros by sudo apt-get remove ros-*, and reinstall ros jade, but the problem is not resolved, the error is same.

Can you know how to fix it ?
Thanks a lot

---

Edit: The CMakeLists.txt is here, @Geoff

cmakeminimumrequired(VERSION 2.8.3)
project(usb_cam)


Find catkin macros and libraries

if COMPONENTS list like find_package(catkin REQUIRED COMPONENTS xyz)

is used, also find other catkin packages

findpackage(catkin REQUIRED COMPONENTS imagetransport roscpp stdmsgs stdsrvs sensormsgs camerainfo_manager)

pkg-config libraries

findpackage(PkgConfig REQUIRED)
pkgcheckmodules(avcodec libavcodec REQUIRED)
pkgcheck_modules(swscale libswscale REQUIRED)

Declare things to be passed to other projects

LIBRARIES: libraries you create in this project that dependent projects also need

CATKINDEPENDS: catkinpackages dependent projects also need

DEPENDS: system dependencies of this project that dependent projects also need

catkinpackage(
  INCLUDEDIRS include
  LIBRARIES ${PROJECT_NAME}
)

Build

includedirectories(include
  ${catkinINCLUDEDIRS}
  ${avcodecINCLUDEDIRS}
  ${swscaleINCLUDE_DIRS}
)

Build the USB camera library

addlibrary(${PROJECTNAME} src/usbcam.cpp)
targetlinklibraries(${PROJECTNAME}
  ${avcodecLIBRARIES}
  ${swscaleLIBRARIES}
  ${catkin_LIBRARIES}
)

Declare a cpp executable

addexecutable(${PROJECTNAME}node nodes/usbcamnode.cpp)
targetlinklibraries(${PROJECTNAME}node
  ${PROJECTNAME}
  ${avcodecLIBRARIES}
  ${swscaleLIBRARIES}
  ${catkin_LIBRARIES}
)

Install

Mark executables and/or libraries for installation

install(TARGETS ${PROJECTNAME}node ${PROJECTNAME}
  RUNTIME DESTINATION ${CATKINPACKAGEBINDESTINATION}
  LIBRARY DESTINATION ${CATKINPACKAGELIB_DESTINATION}
)

Copy launch files

install(DIRECTORY launch/
  DESTINATION ${CATKINPACKAGESHAREDESTINATION}/launch
  FILESMATCHING PATTERN "*.launch"
)

install(DIRECTORY include/${PROJECTNAME}/
   DESTINATION ${CATKINPACKAGEINCLUDEDESTINATION}
   FILES_MATCHING PATTERN ".h" PATTERN ".hpp"
)