Solvespace: Compilation error: Backtrace_LIBRARY (ADVANCED)

[probonopd]

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
Backtrace_LIBRARY (ADVANCED)
    linked by target "solvespace-core" in directory solvespace/src

Full Travis CI build log: https://travis-ci.org/probonopd/solvespace/jobs/255811493#L986-L989

[whitequark]

This job ran on our Trusty environment, which was updated on Wednesday, July 12th. Read all about it in the docs and take note that you can add group: deprecated-2017Q3 in your .travis.yml file to use the previous version.

Try this and check if it helps.

[probonopd]

Unfortunately it did not help. https://github.com/probonopd/solvespace/blob/patch-1/.travis.yml

[whitequark]

No idea sorry. On Linux, the backtrace() function is in glibc, so the check for it should not fail:

-- Looking for backtrace
-- Looking for backtrace - not found

You might want to enable CMake's verbose output to find out why.

[whitequark]

Ah this reproduces on master. I'll look into it.

[whitequark]

The backtrace library is no longer a mandatory dependency (it's been made optional), so I believe this is fixed.