about compiling opencv programs outside ROS (Bug #1475)

Added by Kei Okada over 13 years ago. Updated almost 13 years ago.

Status:Cancelled Start date:
Priority:High Due date:
Assignee:Alexander Shishkov % Done:

0%
Category:build/install
Target version:2.4.0
Affected version: Operating System:
Difficulty: HW Platform:
Pull request:

Description

.pc file in opencv2.3 package is not working for non-ros users as discussed in http://answers.ros.org/question/2882/about-compiling-opencv-programs-outside-ros.

We'll be happy if you can modify the opencv-2.3.1.pc file in the deb package to works with gcc -o hoge hoge.cpp pkg-config opencv-2.3.1 --libs

pkg-config.patch - pkg-config patch (1.8 kB) Jonathan Bohren, 2012-01-24 04:49 am

History

#1
Updated by Jonathan Bohren over 13 years ago

Specifically, the pkg-config file is malformed. The linker flags have the pattern "-l/abs/path/to/libX.so.2.3.1" but these should either all be "-lX" (versionless) or just "/abs/path/to/libX.so.2.3.1" (versioned).

Additionally, OpenCV 2.3.1 doesn't install an "opencv.pc" just an "opencv-2.3.1.pc" whereas most projects that use pkg-config pass "opencv" and not "opencv-2.3.1". If the pkg-config versioning is important, the install should at least install "opencv-2.3.1.pc" and then create a symlink called "opencv.pc".

#2
Updated by Jonathan Bohren about 13 years ago

Bump.

#3
Updated by pascalmuller - about 13 years ago

Replying to [comment:2 jbohren]:

Specifically, the pkg-config file is malformed. The linker flags have the pattern "-l/abs/path/to/libX.so.2.3.1" but these should either all be "-lX" (versionless) or just "/abs/path/to/libX.so.2.3.1" (versioned).

Additionally, OpenCV 2.3.1 doesn't install an "opencv.pc" just an "opencv-2.3.1.pc" whereas most projects that use pkg-config pass "opencv" and not "opencv-2.3.1". If the pkg-config versioning is important, the install should at least install "opencv-2.3.1.pc" and then create a symlink called "opencv.pc".

I'm wondering when the patch will be present in the (Ubuntu) packages offered?

Also, for me it's pretty important both 'opencv.pc' and 'opencv-2.3.1.pc' will exist with the new contents. The context in the patch around the things you corrected seems to contain 'opencv.pc' as a filename. I assume the filename has already been changed from 'opencv-2.3.1.pc' to 'opencv.pc'at an earlier time?

#4
Updated by Jonathan Bohren about 13 years ago

Replying to [comment:5 pascalmuller]:

Replying to [comment:2 jbohren]:

Specifically, the pkg-config file is malformed. The linker flags have the pattern "-l/abs/path/to/libX.so.2.3.1" but these should either all be "-lX" (versionless) or just "/abs/path/to/libX.so.2.3.1" (versioned).

Additionally, OpenCV 2.3.1 doesn't install an "opencv.pc" just an "opencv-2.3.1.pc" whereas most projects that use pkg-config pass "opencv" and not "opencv-2.3.1". If the pkg-config versioning is important, the install should at least install "opencv-2.3.1.pc" and then create a symlink called "opencv.pc".

I'm wondering when the patch will be present in the (Ubuntu) packages offered?

Also, for me it's pretty important both 'opencv.pc' and 'opencv-2.3.1.pc' will exist with the new contents. The context in the patch around the things you corrected seems to contain 'opencv.pc' as a filename. I assume the filename has already been changed from 'opencv-2.3.1.pc' to 'opencv.pc'at an earlier time?

So from what I could see in the CMakeLists.txt, opencv can build both "opencv.pc" and "opencv-VERSION.pc" depending on whether or not the CMake variable "OPENCV_MANGLED_INSTALL_PATHS" is set. My patch will at least make the pc file specify the correct linker flags, and unclude opecv_gpu (which even trunk does not).

#5
Updated by Alexander Shishkov almost 13 years ago

  • Target version deleted ()

#6
Updated by Alexander Shishkov almost 13 years ago

  • Assignee deleted (Vadim Pisarevsky)

#7
Updated by Alexander Shishkov almost 13 years ago

  • Assignee set to Alexander Shishkov

#8
Updated by Alexander Shishkov almost 13 years ago

We already updated these scripts in trunk. So this patch is obsolete now.
Current opencv.pc generated with the trunk installation:

# Package Information for pkg-config

prefix=/usr/local
exec_prefix=${prefix}
libdir=
includedir_old=${prefix}/include/opencv
includedir_new=${prefix}/include

Name: OpenCV
Description: Open Source Computer Vision Library
Version: 2.3.3
Libs:  ${exec_prefix}/lib/libopencv_calib3d.so ${exec_prefix}/lib/libopencv_contrib.so ${exec_prefix}/lib/libopencv_core.so ${exec_prefix}/lib/libopencv_features2d.so ${exec_prefix}/lib/libopencv_flann.so ${exec_prefix}/lib/libopencv_gpu.so ${exec_prefix}/lib/libopencv_highgui.so ${exec_prefix}/lib/libopencv_imgproc.so ${exec_prefix}/lib/libopencv_legacy.so ${exec_prefix}/lib/libopencv_ml.so ${exec_prefix}/lib/libopencv_nonfree.so ${exec_prefix}/lib/libopencv_objdetect.so ${exec_prefix}/lib/libopencv_photo.so ${exec_prefix}/lib/libopencv_stitching.so ${exec_prefix}/lib/libopencv_ts.so ${exec_prefix}/lib/libopencv_video.so ${exec_prefix}/lib/libopencv_videostab.so
Cflags: -I${includedir_old} -I${includedir_new}

If you still have problems with pkg-config for OpenCV, please create new issue.

  • Status changed from Open to Cancelled

#9
Updated by Alexander Shishkov almost 13 years ago

  • Target version set to 2.4.0

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