編譯PCL源文件時未定義引用`png_set_longjmp_fn'

Question

我想從源文件安裝PCL，但是我有這個錯誤「未定義的引用到`png_set_longjmp_fn'」。我搜查了很多，但找不到解決方案。

其他信息：現在，在我的電腦中，我安裝了libpng1.6和libpng1.2。我無法刪除libpng1.2，因爲其他應用程序依賴於它。

Scanning dependencies of target pcl_io_ply 
Scanning dependencies of target pcl_pcd_convert_NaN_nan 
Scanning dependencies of target pcl_people 
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Scanning dependencies of target pcl_common 
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Building CXX object people/CMakeFiles/pcl_people.dir/src/hog.cpp.o 
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Building CXX object common/CMakeFiles/pcl_common.dir/src/point_types.cpp.o 
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Building CXX object io/CMakeFiles/pcl_io.dir/src/pcd_io.cpp.o 
Linking CXX executable ../../bin/pcl_example_copy_point_cloud 
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Scanning dependencies of target pcl_example_half_edge_mesh 
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Linking CXX shared library ../lib/libpcl_octree.so 
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Linking CXX shared library ../lib/libpcl_kdtree.so 
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[ 14%] Building CXX object io/CMakeFiles/pcl_io.dir/src/png_io.cpp.o 
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Linking CXX executable ../../bin/pcl_convert_pcd_ascii_binary 
../../lib/libpcl_io.so.1.7.2: undefined reference to `png_set_longjmp_fn' 
collect2: error: ld returned 1 exit status 
io/tools/CMakeFiles/pcl_convert_pcd_ascii_binary.dir/build.make:215: recipe for target 'bin/pcl_convert_pcd_ascii_binary' failed 
make[2]: *** [bin/pcl_convert_pcd_ascii_binary] Error 1 
CMakeFiles/Makefile2:565: recipe for target 'io/tools/CMakeFiles/pcl_convert_pcd_ascii_binary.dir/all' failed 
make[1]: *** [io/tools/CMakeFiles/pcl_convert_pcd_ascii_binary.dir/all] Error 2 
make[1]: *** Waiting for unfinished jobs.... 
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Linking CXX executable ../../bin/pcl_hdl_grabber 
../../lib/libpcl_io.so.1.7.2: undefined reference to `png_set_longjmp_fn' 
collect2: error: ld returned 1 exit status 
io/tools/CMakeFiles/pcl_hdl_grabber.dir/build.make:215: recipe for target 'bin/pcl_hdl_grabber' failed 
make[2]: *** [bin/pcl_hdl_grabber] Error 1 
CMakeFiles/Makefile2:602: recipe for target 'io/tools/CMakeFiles/pcl_hdl_grabber.dir/all' failed 
make[1]: *** [io/tools/CMakeFiles/pcl_hdl_grabber.dir/all] Error 2 
[ 18%] Building CXX object sample_consensus/CMakeFiles/pcl_sample_consensus.dir/src/sac_model_normal_sphere.cpp.o 
Linking CXX shared library ../lib/libpcl_search.so 
[ 18%] Building CXX object sample_consensus/CMakeFiles/pcl_sample_consensus.dir/src/sac_model_plane.cpp.o 
[ 18%] Built target pcl_search 
[ 18%] Building CXX object sample_consensus/CMakeFiles/pcl_sample_consensus.dir/src/sac_model_registration.cpp.o 
[ 19%] Building CXX object sample_consensus/CMakeFiles/pcl_sample_consensus.dir/src/sac_model_sphere.cpp.o 
Linking CXX shared library ../lib/libpcl_sample_consensus.so 
[ 19%] Built target pcl_sample_consensus 
Makefile:146: recipe for target 'all' failed 
make: *** [all] Error 2 

Answer 1

CMakeLists.txt中的修改（檢查PCL源文件夾）在我的情況下工作。 （這是從CMake compile options for libpng）。你應該使用下面的cmake配置，而不是原來的配置。

# LibPNG 
option(WITH_PNG "PNG file support" TRUE) 
if(WITH_PNG) 
    # search for pkg-config 
    include (FindPkgConfig) 
    if (NOT PKG_CONFIG_FOUND) 
     message (FATAL_ERROR "pkg-config not found") 
    endif() 

    # check for libpng 
    pkg_check_modules (LIBPNG libpng16 REQUIRED) 
    if (NOT LIBPNG_FOUND) 
     message(FATAL_ERROR "You don't seem to have libpng16 development libraries installed") 
    else() 
     include_directories (${LIBPNG_INCLUDE_DIRS}) 
     link_directories (${LIBPNG_LIBRARY_DIRS}) 
     link_libraries (${LIBPNG_LIBRARIES}) 
    endif() 
endif(WITH_PNG)