I have some software from a collaborator. When performing >cmake .. I receive the error message "Could NOT find LibXml2 (missing: LIBXML2_INCLUDE_DIR)" (see screenshot)
I have found the libxml2.so.2.9.12 file on my machine and have added its directory to my PATH (/home/silicon/anaconda3/pkgs/libxml2-2.9.12-h03d6c58_0/lib) as well as several others that seem related, including one that just had a link to the file in it.
I saw a similar question in here (although on a Windows machine), here: cmake cannot find LibXml2
and I have tried several versions of this, but still the same error. I typed in the path the way it would look on a Linux machine (parenthesis in previous paragraph). I tried several versions. Always the same error.
I looked in the CMakeLists.txt file to see if there was something that looked like I could adjust it for my system, but I don't know anything about that type of file and I just left it the way it was.
Thank you for the help.
Quick solution from the asker's comment: sudo apt-get install libxml2-dev
Related
I found many articles about the what I am about to ask but no precise answer. I wanted to compile a main file from a RSA library. However, this error appears and I don't know how to fix it:
The error in the image indicates that there's no such file or directory as ${workspaceFolder}boost/multiprecision/cpp_int.hpp.
The file boost/multiprecision/cpp_int.hpp is part of the Boost C++ Libraries. If Boost is not installed, as indicated in the comments above, it will be necessary to install Boost to provide the missing file and any related software to which it refers.
For information on installing Boost, take a look at the Boost Getting Started page.
Note that if you are using Linux, Boost is likely available in your system's repository (i.e. package manager, software manager, or whatever it's called on your system). If so, installing from there would probably be the easiest way to go.
If Boost did happen to be installed and the error was occuring, it would then be necessary to add the location of the Boost include files to the compilation command.
I'm trying to build cpp-netlib 0.12.0 stable in Ubuntu 18.04, but when I get to running
$ make -j4
I get a lot of errors, such as:
error: ‘SSL_R_SHORT_READ’ was not declared in this scope
ERR_PACK(ERR_LIB_SSL, 0, SSL_R_SHORT_READ)
Google told me this was because the make variables -DOPENSSL_INCLUDE_DIR and -DOPENSSL_SSL_LIBRARY need to be defined. However, I can't find the directories/libraries I need to set them to. Examples give /usr/lib/openssl-1.0 and /usr/include/openssl-1.0, but I can't find anything like those, even though I have the latest version of openssl installed through apt-get.
My /usr/include directory contains the folder 'openssl', but usr/lib doesn't have even that, only 'openssh', which doesn't appear to contain anything relevant.
How can I fix this?
Fixed by cloning latest version from git repository and building from that.
I'm trying to compile caffe using cmake on a Linux machine. I get this complaint when running cmake:
Could NOT find PythonLibs (missing: PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS) (Required is at least version "2.7")
I later get this error
CMake Error at CMakeLists.txt:85 (add_dependencies):
The dependency target "pycaffe" of target "pytest" does not exist.
What am I doing wrong? I tried setting an environment variable for PYTHON_LIBRARIES but that didn't help. I'm using my locally installed version of python (2.7.13), so I think that might be causing the problem, but I don't know how to get past this.
I was able to "fix it" by editing the file build/CMakeCache.txt and manually setting these
PYTHON_INCLUDE_DIR
PYTHON_LIBRARY
I don't know if that's the correct way to resolve this. If not, what is the right way to resolve this?
I had the same error while installing caffe on Ubuntu 14.04; I solved this by installing boost-python:
sudo apt-get install libboost-python-dev
Check carefully through the installation instructions. There's a variety of dependencies to install (python-devel, glog-devel, ...) and some environment variables to set. Using a local Python installation isn't a problem, as long as you have that properly in your paths. Remember to check your PATH and LD_LIBRARY_PATH variables as well.
You might check with
env | egrep -i "py"
to see what variables do have Python references. If you suspect a version problem with an executable, use
ldd <executable>
To see what objects and versions get loaded. Among other things, it's vaguely possible that something got compiled against an older Python in the system directories.
You need to install numpy
Try pip install numpy
I've now been trying to get MinGW-w64 to work on my system for several days, mainly because it has a more recent GCC version, but I either set things up wrong or there's some strange problem with MinGW-w64 itself.
I've now downloaded i686-w64-mingw32-gcc-4.7.2-release-win32_rubenvb, unpacked it to C:/Dev/mingw-ruben and added the path C:/Dev/mingw-ruben/bin to the $PATH environment variable.
What I'm trying to build is SFML 2 which comes with a CMake file. Running CMake will work just fine, the compiler gets recognized and passes all test. CMake also finds the ar.exe in the C:/Dev/mingw-ruben/binfolder. After generating the MinGW Makefile I switch to the windows command line and run mingw32-make install.
There's where the problem happens, I get the error:
mingw-ruben\bin\ar.exe: mingw-ruben/lib/libopengl32.a: No such file or directory
Or for the network library
mingw-ruben\bin\ar.exe: mingw-ruben/lib/libws2_32.a: No such file or directory
The error seems quite obvious and on check there really is no libopengl32.a or libws2_32.a in mingw-ruben/lib/, but the files is actually located in C:/Dev/mingw-ruben/i686-w64-mingw32/lib.
Now How can I tell ar/make/cmake to not only search in the mingw-ruben/lib directory but also in the mingw-ruben/i686-w64-mingw32/lib?
Would it be a good idea to copy all the content from the i686-w64-mingw32 subfolder to the mingw-ruben root folder?
As a side note: I can call mingw32-make install again and the procedure will continue but up on trying to link my application against SFML, I run into many unresolved symbol errors for the glXYZ functions from within SFML.
Further information: I'm on Windows 8 x64, but I think that doesn't really matter and yes I've tried MSYS but it doesn't resolve any of my issues.
Am I doing something wrong? Do I have to configure things specially?
January 2015 Edit
Now that SFML 2.2 has been released, this is no longer an issue and you have to link SFML's dependencies yourself when linking static.
January 2014 Edit
As of commit 165f2b1888 and f784fe4c07, which is included in the stable version SFML 2.1, MinGW-w64 compilers are supported.
However while discussing further with different parties it came to light, that the sfml_static_add_libraries marco a rather ugly hack was. In short it unpacked the static dependencies and included their obj files into the SFML library itself. This was most noticeable an issue, when trying to use your own version of GLEW, which failed since SFML was using its internal one already. The issue was brought to the forum and was pushed around for quite a bit, until Laurent finally gave in and went with the proper way of linking dependencies, which means you have to link them now on your own.
As of commit dbf01a775b, which is not included in the stable version of SFML 2.1, one has to link the SFML dependencies in the finally application, when linking statically against SFML.
Original
After some chat on the IRC we've figured it out.
It has nothing to do with MinGW but it's all SFML's fault. To reduce the dependencies list for SFML while linking statically the developer decided to manually extract the symbols from each library (opengl32, ws2_32, ...) which obviously isn't how one does things and violates some ODR rules. The actual error then occurs because the developer assumed that the library will be in the folder mingw/libbut with MinGW w64 it's located in a seperate directory mingw/version/lib and so ar.exe didn't find the library.
Solution
Removing the call to the sfml_static_add_libraries macro and then recompile. Afterwards you'll have to link all the dependencies for static linkages, like it should be.
I think it may be well a problem of the gcc distribution you downloaded.
A bit of light into the problem gives ruben's question here:
https://unix.stackexchange.com/questions/45277/executing-binary-file-file-not-found
that seems to me related to that (although it is about linux and not win)
I was having a similar problem (the name of the missing file was different) few months ago with gcc 4.7.0 linux->win crosscompiler. So until now I lived with the standard ubuntu mingw-w64 package and only yesterday I gave another try to i686-w64-mingw32-gcc-4.7.2-release-linux64_rubenvb.tar.xz and it works without issues in otherwise same environment where the previous version was failing with "..ar.exe: ... no such file". Sometimes I develop also in windows, then I use http://www.mingw.org/ that was for me much easier to setup in Win. It supports only 32bit target but for my project it is sufficient.
Well I've recently come out of the dark ages and upgraded my GCC from 3.4.4 to 4.5.0 with Cygwin (I use Netbeans 6.8 on Windows for future reference). I tried testing the new compiler by attempting to run a simple program through it. The run failed however, citing that NetBeans "cannot find -lstdc++".
Interesting.
I look in ...
C:\cygwin\lib\gcc\i686-pc-cygwin\4.5.0
...where libstdc++.a, libstdc++.dll.a, libstdc++.la, libsupc++.a, and libsupc++.la are supposed to be (they're in that spot in the 3.4.4 folder), and they're not there. I also notice something else: there's a 4.3.4 folder in...
C:\cygwin\lib\gcc\i686-pc-cygwin
which contains these exact files! Good. So I copy them in to the 4.5.0 folder and try to run the program again. This time i'm getting two other errors:
build/Debug/Cygwin-Windows/extract_fail_operations.o:/usr/lib/gcc/i686-pc-cygwin/4.5.0/include/c++/bits/stl_list.h:1435: undefined reference to `std::_List_node_base::_M_hook(std::_List_node_base*)'
and:
build/Debug/Cygwin-Windows/extract_fail_operations.o:/usr/lib/gcc/i686-pc-cygwin/4.5.0/include/c++/bits/stl_list.h:1451: undefined reference to `std::_List_node_base::_M_unhook()'
At this point I figured that I was way over my head and decided to come for help before copying and pasting any more files. If anyone could tell me how to get this working, i'd be really appreciative.
(If any solutions involve the command line, please be warned that i'm not well versed in it... you may have to provide extra details that you wouldn't need to to other SO users!)
EDIT: The PATH variables are as follows:
C:\Program Files\SSH Communications Security\SSH Secure Shell;C:\Program Files\CVSNT\;C:\cygwin\bin
And yes, the Cygwin installed is the latest from the site.
You need to install version 4.5.0 of libstdc++6-devel.