CMake error: file for target mongoc_static does not exist

[Thomas Thulesen]

In Ubuntu focal I get the following CMake error when using find_package(mongoc-1.0) in CMake:

CMake Error at /usr/lib/x86_64-linux-gnu/cmake/mongoc-1.0/mongoc-targets.cmake:98 (message):
  The imported target "mongo::mongoc_static" references the file

     "/usr/lib/x86_64-linux-gnu/libmongoc-static-1.0.a"

  but this file does not exist. Possible reasons include:

  * The file was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and contained

     "/usr/lib/x86_64-linux-gnu/cmake/mongoc-1.0/mongoc-targets.cmake"

  but not all the files it references.

The libmongoc-static-1.0.a library is not included in the libmongoc-dev package.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mark Brown (chef34)]

I commented out the following code beginning at /usr/lib/x86_64-linux-gnu/cmake/mongoc-1.0/mongoc-targets.cmake:98 and it worked for me:

#foreach(target ${_IMPORT_CHECK_TARGETS} )
# foreach(file ${_IMPORT_CHECK_FILES_FOR_${target}} )
# if(NOT EXISTS "${file}" )
# message(FATAL_ERROR "The imported target \"${target}\" references the file
# \"${file}\"
#but this file does not exist. Possible reasons include:
#* The file was deleted, renamed, or moved to another location.
#* An install or uninstall procedure did not complete successfully.
#* The installation package was faulty and contained
# \"${CMAKE_CURRENT_LIST_FILE}\"
#but not all the files it references.
#")
# endif()
# endforeach()
# unset(_IMPORT_CHECK_FILES_FOR_${target})
#endforeach()
unset(_IMPORT_CHECK_TARGETS)

Take care don't comment out the unset code on the last line.

[Patrizio Bertoni (pbertoni89)]

Thank you Mark. I hacked that step by simply breaking the outer foreach

sed -i 's/foreach\(.*\)_IMPORT_CHECK_TARGETS\(.*\)/foreach\1_IMPORT_CHECK_TARGETS\2 \n break()/g' \
    /usr/lib/x86_64-linux-gnu/cmake/mongoc-1.0/mongoc-targets.cmake