The following error occurred while executing cmake after executing
1[6%] generating precomp.hpp.gch/OPENCV_CORE_RELEASE.GCH2In file included from/usr/include/c++/6/bits/stl_algo.h: -:0,3 from/usr/include/c++/6/algorithm: +,4 from/opt/opencv/opencv-3.1.0/modules/core/include/opencv2/core/Base. HPP: -,5 from/opt/opencv/opencv-3.1.0/MODULES/CORE/INCLUDE/OPENCV2/CORE.HPP: Wu,6 from/opt/opencv/opencv-3.1.0/MODULES/CORE/INCLUDE/OPENCV2/CORE/UTILITY.HPP: the,7 from/OPT/OPENCV/BUILD/MODULES/CORE/PRECOMP.HPP: the:8/usr/include/c++/6/cstdlib: the: -: Fatal error:stdlib.h: No file or directory9#include_next <stdlib.h>Ten^ One compilation terminated. AModules/core/cmakefiles/pch_generate_opencv_core.dir/build.make: +: recipe forTarget'MODULES/CORE/PRECOMP.HPP.GCH/OPENCV_CORE_RELEASE.GCH'failed -make[2]: * * * [MODULES/CORE/PRECOMP.HPP.GCH/OPENCV_CORE_RELEASE.GCH] Error1 -Cmakefiles/makefile2:1178: recipe forTarget'Modules/core/cmakefiles/pch_generate_opencv_core.dir/all'failed themake[1]: * * * [Modules/core/cmakefiles/pch_generate_opencv_core.dir/all] Error2 -Makefile: the: recipe forTarget' All'failed -Make: * * * [ALL] Error2
This is because GCC6 has been stdlib.h included in the libstdc++ for better optimization, C Library's header file stdlib.h use include_next, and Include_ Next is very sensitive to the wrong system header file path.
The recommended fix is not to use the include path as the system directory, but rather to include the include directory in a standard way
Translated from https://bugs.webkit.org/show_bug.cgi?id=161697
Original Description:
Trying to build webkitgtk+ with GCC6I got Thiserror:in file included from/home/igalia/clopez/yocto/commit-builds/meta-webkit/builds/qemux86- -/tmp-glibc/sysroots/qemux86/usr/include/c++/6.2.0/ext/string_conversions.h: A:0, from/home/igalia/clopez/yocto/commit-builds/meta-webkit/builds/qemux86- -/tmp-glibc/sysroots/qemux86/usr/include/c++/6.2.0/bits/basic_string.h:5402, from/home/igalia/clopez/yocto/commit-builds/meta-webkit/builds/qemux86- -/tmp-glibc/sysroots/qemux86/usr/include/c++/6.2.0/string: the, from/home/igalia/clopez/yocto/commit-builds/meta-webkit/builds/qemux86- -/tmp-glibc/work/i586-oe-linux/webkitgtk/2.12.5-r0/webkitgtk-2.12.5/source/thirdparty/angle/src/common/debug.h: -, from/home/igalia/clopez/yocto/commit-builds/meta-webkit/builds/qemux86- -/tmp-glibc/work/i586-oe-linux/webkitgtk/2.12.5-r0/webkitgtk-2.12.5/source/thirdparty/angle/src/common/mathutil.h: A, from/home/igalia/clopez/yocto/commit-builds/meta-webkit/builds/qemux86- -/tmp-glibc/work/i586-oe-linux/webkitgtk/2.12.5-r0/webkitgtk-2.12.5/source/thirdparty/angle/src/common/mathutil.cpp:9:/home/igalia/clopez/yocto/commit-builds/meta-webkit/builds/qemux86- -/tmp-glibc/sysroots/qemux86/usr/include/c++/6.2.0/cstdlib: the: -: Fatal error:stdlib.h:no Such file or directory #include_next<stdlib.h>The issue seems to being that GCC6have now introduced stdlib.hinchLibstdc++ forBetter compliance and its including the C library stdlib.husingInclude_next which isSensitive to order of system header include paths. See:https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70129The recommended to fix This isTo stop adding include directories asSystem ones (-isystem) and instead use the "standard" to include directories (-I) The OpenEmbedded project isCarrying ThisDownstream patch against webkitgtk+2.12With the above fix:http://git.openembedded.org/openembedded-core/tree/meta/recipes-sato/webkit/files/0001- Webkitmacros-append-to-i-and-not-to-isystem.patch
OpenCV Linux Installation make error