Bug 464070 – media-libs/opencv-2.4.4a fails to build

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Markus Walter 2013-04-01 11:50:36 UTC]

Created attachment 343922 [details]
build log

On my hardened ~amd64 machine I see the following error when trying to merge opencv-2.4.4a.

===
/usr/bin/cmake -H/var/tmp/portage/media-libs/opencv-2.4.4a/work/opencv-2.4.4 -B/var/tmp/portage/media-libs/opencv-2.4.4a/work/opencv-2.4.4a_build --check-build-system CMakeFiles/Makefile.cmake 0
CMake Error: Parse error in cache file /var/tmp/portage/media-libs/opencv-2.4.4a/work/opencv-2.4.4a_build/CMakeCache.txt. Offending entry: /usr/lib64/python2.7/site-packages/numpy/core/include
Re-run cmake error reading : CMakeFiles/Makefile.cmake
===

I see a somewhat similar error with opencv-2.4.3. My system python is python-3.2.

In the file CMakeCache.txt I found only one line referring to numpy which is the following

===
//Path to numpy headers
PYTHON_NUMPY_INCLUDE_DIR:PATH=Emutramp; OFF
===

This seems like a spurious output. I see the "Emutramp: OFF" message occasionally on the command line, but could not yet determine, what exactly causes it. One thing that produces this reliably is the emerge command.

[Comment 1 Markus Walter 2013-04-01 11:50:49 UTC]

Created attachment 343924 [details]
emerge --info

[Comment 2 Magnus Granberg 2013-04-01 13:08:51 UTC]

remerge the libffi

[Comment 3 Markus Walter 2013-04-01 13:59:08 UTC]

I remerged libffi-3.0.12 from hardened-dev (since libffi-3.0.13 from main tree has the same problem as 3.0.12). Unfortunately this didn't change anything.

[Comment 4 Markus Walter 2013-04-19 13:27:22 UTC]

Merging libffi-3.0.13 from hardened-dev solved the problem.

[Comment 5 Andreas K. Hüttel 2013-12-07 00:04:00 UTC]

Tried 2.4.6.1 already?

[Comment 6 Markus Walter 2013-12-08 21:39:04 UTC]

(In reply to Andreas K. Hüttel from comment #5)
> Tried 2.4.6.1 already?

I just looked and opencv-2.4.6.1 as well as opencv-2.4.7 work with libffi-3.0.13-r1 from the main tree.