package/opencv/0004-CMakeLists.txt-Do-not-add-libdl-to-LINKER_LIBS-for-s.patch

   1 From 22e03ef8a9e3adcbc6b2f16c3cc98e4e14443eed Mon Sep 17 00:00:00 2001
   2 From: Bernd Kuhls <bernd.kuhls@t-online.de>
   3 Date: Sat, 24 Sep 2016 17:51:22 +0200
   4 Subject: [PATCH 1/1] CMakeLists.txt: Do not add libdl to LINKER_LIBS for
   5  static builds
   6
   7 Without this patch -ldl is present in opencv.pc which breaks OpenCV
   8 detection by ffmpeg, detected by buildroot autobuilders:
   9
  10 http://autobuild.buildroot.net/results/765/7657e01481995a4f0d725467e935a83928a59a04//ffmpeg-3.1.3/config.log
  11
  12 /home/peko/autobuild/instance-1/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/4.9.4/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: cannot find -ldl
  13
  14 Patch sent upstream: https://github.com/opencv/opencv/pull/7337
  15
  16 Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
  17 ---
  18  CMakeLists.txt | 5 ++++-
  19  1 file changed, 4 insertions(+), 1 deletion(-)
  20
  21 diff --git a/CMakeLists.txt b/CMakeLists.txt
  22 index 007b80d..99b047d 100644
  23 --- a/CMakeLists.txt
  24 +++ b/CMakeLists.txt
  25 @@ -457,7 +457,10 @@ if(UNIX)
  26      elseif(${CMAKE_SYSTEM_NAME} MATCHES "QNX")
  27        set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} m)
  28      else()
  29 -      set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} dl m pthread rt)
  30 +      if(BUILD_SHARED_LIBS)
  31 +        set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} dl)
  32 +      endif()
  33 +      set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} m pthread rt)
  34      endif()
  35    else()
  36      set(HAVE_LIBPTHREAD YES)
  37 --
  38 2.9.3
  39