Well, I did find a working fix to apply in debian/rules. # Add missing math libraray for linking in gphoto2 # (automatic math library linking was dropped by GCC years ago) export DEB_LDFLAGS_MAINT_APPEND := -lm
I did add as well all available processor cores in parallel build, and Optimization O3 instead of -O2. However it would better if upstream would update its own configure.ac file ... Here is the portion of the log showing no sign of unresolved dependencies: make[1]: Leaving directory '/home/ubuntu-xenial/pascal/Downloads/Launchpad/libgphoto2/libgphoto2-2.5.9' debian/rules override_dh_makeshlibs make[1]: Entering directory '/home/ubuntu-xenial/pascal/Downloads/Launchpad/libgphoto2/libgphoto2-2.5.9' dh_makeshlibs -plibgphoto2-6 -X/usr/lib/x86_64-linux-gnu/libgphoto2/ dh_makeshlibs -plibgphoto2-port12 -X/usr/lib/x86_64-linux-gnu/libgphoto2_port/ make[1]: Leaving directory '/home/ubuntu-xenial/pascal/Downloads/Launchpad/libgphoto2/libgphoto2-2.5.9' debian/rules override_dh_shlibdeps make[1]: Entering directory '/home/ubuntu-xenial/pascal/Downloads/Launchpad/libgphoto2/libgphoto2-2.5.9' dh_shlibdeps -ldebian/libgphoto2-6/usr/lib/:debian/libgphoto2-port12/usr/lib/ make[1]: Leaving directory '/home/ubuntu-xenial/pascal/Downloads/Launchpad/libgphoto2/libgphoto2-2.5.9' dh_installdeb -O--parallel debian/rules override_dh_gencontrol make[1]: Entering directory '/home/ubuntu-xenial/pascal/Downloads/Launchpad/libgphoto2/libgphoto2-2.5.9' dh_gencontrol dpkg-gencontrol: warning: Depends field of package libgphoto2-port12-dbgsym: unknown substitution variable ${shlibs:Depends} dpkg-gencontrol: warning: Depends field of package libgphoto2-6-dbgsym: unknown substitution variable ${shlibs:Depends} dh_gencontrol -plibgphoto2-6 -- -Vudev-hotplug='udev (>= 201)' make[1]: Leaving directory '/home/ubuntu-xenial/pascal/Downloads/Launchpad/libgphoto2/libgphoto2-2.5.9' dh_md5sums -O--parallel dh_builddeb -O--parallel It would be nice for Ubuntu to update the build in all supported releases. The rebuild will be available in my PPA soon: https://launchpad.net/~anton+/+archive/ubuntu/photo-video-apps However beware that this PPA is yet NOT to be added on any system as it's still unstable and miss some dependencies i.e. if installing a package you will be faced with a partial upgrade which in turn will remove some of your already installed apps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1802674 Title: libgphoto2 builds lacks a link to the math library in all Ubuntu releases since at least Xenial 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mtpaint/+bug/1802674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs