I am installing these packages: g++-4.7 gcc-4.7-multilib and I set CXX to g++-4.7
I validate that the compiler is indeed 4.7 by issuing ${CXX} --version
after that I call cmake like this:
cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_FLAGS="-m32" .
My project has only c++ source files so no need for C flags. The errors I get on travis are:
/usr/include/c++/4.7/cstdio:43:28: fatal error: bits/c++config.h: No such file or directory
any ideas? I have no problems using -m64
EDIT:
just tried also with g++-4.7-multilib (g++ instead of gcc) but still no luck - same error.
Seems like you ran into this: Missing include "bits/c++config.h" when cross compiling 64 bit program on 32 bit in Ubuntu
Make sure that you have the same versions of gcc, g++, gcc-multilib and g++-multilib installed and if that doesn't help, try adding -I/usr/include/c++/4.7/i686-linux-gnu to CXXFLAGS
I looked at the log and saw this...
Installing APT Packages (BETA)
Disallowing packages: g\+\+-4.7-multilib
If you require these packages, please review the package approval process at:
https://github.com/travis-ci/apt-package-whitelist#package-approval-process
turns out taht only for gcc 4.6 and 4.7 the package is not in the whitelist - other gcc versions have it... will request it.
Related
I struggle with Caffe compilation. Unfortunately I failed to compile it.
Steps I followed:
git clone https://github.com/BVLC/caffe.git
cd caffe
mkdir build
cd build
cmake ..
make all
Running make all fails with the following error message:
[ 2%] Building NVCC (Device) object src/caffe/CMakeFiles/cuda_compile.dir/util/cuda_compile_generated_im2col.cu.o
In file included from /usr/include/cuda_runtime.h:59:0,
from <command-line>:0:
/usr/include/host_config.h:82:2: error: #error -- unsupported GNU version! gcc 4.9 and up are not supported!
#error -- unsupported GNU version! gcc 4.9 and up are not supported!
^
CMake Error at cuda_compile_generated_im2col.cu.o.cmake:207 (message):
Error generating /mydir/caffe/build/src/caffe/CMakeFiles/cuda_compile.dir/util/./cuda_compile_generated_im2col.cu.o
Software version:
OS: Debian.
gcc version: 5.3.1.
nvcc version: 6.5.12.
cat /proc/driver/nvidia/version result:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 352.63 Sat Nov 7 21:25:42 PST 2015
GCC version: gcc version 4.8.5 (Debian 4.8.5-3)
Attempts to solve the problem
1st try
Simple solutions are often best ones, so (as suggested here) I tried to comment out macro checking gcc version from /usr/include/host_config.h (line 82). Unfortunately it doesn't work and compilation fails badly:
1 catastrophic error detected in the compilation of "/tmp/tmpxft_000069c2_00000000-4_im2col.cpp4.ii".
2nd try
I tried to run:
cmake -D CMAKE_CXX_COMPILER=g++-4.8 ..
make
but it fails with exactly the same error message (even though g++-4.8 should be accepted).
3rd try
I've found similar problem (though not related to Caffe) and I tried to solve it as suggested in the accepted answer.
What I did:
I've ran grep -iR "find_package(CUDA" caffe command and found Cuda.cmake file which has find_package(CUDA 5.5 QUIET) in line 225.
I added set(CUDA_HOST_COMPILER /usr/bin/gcc-4.8) to Cuda.cmake, line before line: find_package(CUDA 5.5 QUIET).
I removed everything from build directory and ran cmake and make again - with and without -D CMAKE_CXX_COMPILER=g++-4.8.
Unfortunately result is exactly the same. Caffe probably overwrites it somehow - I didn't figure it out how.
make VERBOSE=1 2>&1 | grep -i compiler-bindir returns nothing.
What's interesting, make VERBOSE=1 prints command that fails, which is:
/usr/bin/nvcc -M -D__CUDACC__ /mydir/caffe/src/caffe/util/im2col.cu -o /mydir/caffe/build/src/caffe/CMakeFiles/cuda_compile.dir/util/cuda_compile_generated_im2col.cu.o.NVCC-depend -ccbin /usr/bin/cc -m64 -DUSE_LMDB -DUSE_LEVELDB -DUSE_OPENCV -DWITH_PYTHON_LAYER -DGTEST_USE_OWN_TR1_TUPLE -Xcompiler ,\"-fPIC\",\"-Wall\",\"-Wno-sign-compare\",\"-Wno-uninitialized\",\"-O3\",\"-DNDEBUG\" -gencode arch=compute_20,code=sm_21 -Xcudafe --diag_suppress=cc_clobber_ignored -Xcudafe --diag_suppress=integer_sign_change -Xcudafe --diag_suppress=useless_using_declaration -Xcudafe --diag_suppress=set_but_not_used -Xcompiler -fPIC -DNVCC -I/usr/include -I/mydir/caffe/src -I/usr/include -I/mydir/caffe/build/include -I/usr/include/hdf5/serial -I/usr/include/opencv -I/usr/include/atlas -I/usr/include/python2.7 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/mydir/caffe/include -I/mydir/caffe/build
when I add --compiler-bindir /usr/bin/gcc-4.8 flag manually, it prints error:
nvcc fatal : redefinition of argument 'compiler-bindir'
which may be related to this bug report.
Edit: I didn't notice that --compiler-bindir and -ccbin are the same options, and the latter is already set in above command that failed. When I changed -ccbin /usr/bin/cc to -ccbin /usr/bin/gcc-4.8 in above command that failed, it completes successfully. Now I need to find option in Caffe's CMake file that overwrite -ccbin in all subsequent Caffe's CMakes. Looking at cmake/Cuda.cmake:252:list(APPEND CUDA_NVCC_FLAGS ${NVCC_FLAGS_EXTRA} seems to be good way to go.
How can I successfully complete my compilation? Any help is appreciated.
Related SO questions:
host_config.h:unsupported GNU version! gcc versions later than 4.9 are not supported.
CUDA 6.5 complains about not supporting gcc 4.9 - what to do?.
cmake -D CUDA_NVCC_FLAGS="-ccbin gcc-4.8" .. && make causes successful compilation.
Now another problem showed up: linking Google's libgflags or libprotobuf fails probably due to fact that it was compiled with newer gcc version but it's not related to asked question.
My machine runs Ubuntu 15.10, and my default compiler version is gcc 5.2.1 .
Commenting out the #error directive in line 115 of file
/usr/local/cuda-7.5/include/host_config.h
(or whatever the path on your system is) did the trick for me. Caffe compiled fine, all tests ran smoothly.
On the other hand, if one chooses to ignore this and proceed to compile part of the project with one compiler version, part of the project with another (for me it was gcc-4.8 and gcc-5.2.1), linking problems will arise. The linking problems of protobuf and libgflags another answer mentions are not unrelated to this.
I want to install xgboost using anaconda python. In this process, I am trying to install xgboost. While trying to "make" the xgboost i am getting the below error:
C:\GitRepository\xgboost>
g++ -m64 -c -Wall -O3 -msse2 -Wno-unknown-pragmas -funroll-loops -fopenmp -fPIC
-o updater.o src/tree/updater.cpp
src/tree/updater.cpp:1:0: warning: -fPIC ignored for target (all code is positio
n independent)
// Copyright 2014 by Contributors
^
src/tree/updater.cpp:1:0: sorry, unimplemented: 64-bit mode not compiled in
make: *** [updater.o] Error 1
I understood from the other Stack overflow posts that 32 bit gcc cannot go with the 64bit anaconda that i am using. However when i installed mingw-w64 i could see that it has g++ only for mingw32 and not for mingw-w64. Under the mingw-w64 package, g++ and other applications+folders are present only for mingw32 and not for 64. For mingw-64 only a batch file and a internet short cut is present.
Could you please guide me what is going wrong or guide me to an appropriate place from where i can download for mingw-64.
Thanks in advance.
If you are really using MSYS2, then you should not be downloading separate compilers. You should install 64-bit g++ using MSYS2's package manager, by running pacman -S mingw-w64-x86_64-toolchain. Then make sure that you start the MSYS2 shell using the shortcut that is named something like "MSYS2 Win64 Shell" in your start menu. Type which g++ in Bash and make sure it outputs /mingw64/bin/g++. Then you should be able to compile code for 64-bit Windows.
I'm not sure that this answer is complete. If you need more help with MSYS2, it would be good to post the exact commands you are running to download/extract the source code and build so that others can reproduce the error.
$ gcc 12.c -fopenmp
12.c:9:9: fatal error: 'omp.h' file not found
#include<omp.h>
^
1 error generated.
While compiling openMP programs I get the above error. I am using OS X Yosemite. I first tried by installing native gcc compiler by typing gcc in terminal and later downloaded Xcode too still I got the same error. Then I downloaded gcc through:
$ brew install gcc
Still I'm getting the same error. I did try changing the compiler path too still it shows:
$ which gcc
/usr/bin/gcc
So how do I compile programs with gcc?
EDIT: As of 13 Aug 2017 the --without-multilib option is no longer present in Homebrew and should not be used. The standard installation
brew install gcc
will provide a gcc installation that can be used to compile OpenMP programs. As below it will be installed into /usr/local/bin as gcc-<version>. The current gcc version available from Homebrew (as of writing) will install as gcc-8. You can compile programs with OpenMP support using it via
gcc-8 -fopenmp hello.c
Alternatively you could put an alias in your .bashrcfile as
alias gcc='gcc-8'
and then compile using
gcc -fopenmp hello.c
Note: I'm leaving the original post here in case it is useful to somebody.
The standard gcc available on OS X through XCode and Clang doesn't support OpenMP. To install the Homebrew version of gcc with OpenMP support you need to install it with
brew install gcc --without-multilib
or as pointed out by #Mark Setchell
brew reinstall gcc --without-multilib
This will install it to the /usr/local/bin directory. Homebrew will install it as gcc-<version> so as not to clobber the gcc bundled with XCode.
I finally did some research and I finally came across a solution here: <omp.h> library isn't found in the GCC version (4.2.1) in Mavericks.
I got a new gcc complier from http://hpc.sourceforge.net/
Then I placed a new executable folder by
$ sudo tar -xvf gcc-4.9-bin.tar -C /
Later I switched to it by
export PATH=/usr/local/bin:$PATH that seemed to do the trick!
I wanted to use latest g++ compiler(4.9.1) on suse linux, but suse only supports an older g++ version. So, I took a latest source code from one of the gnu mirror sites and compiled it myself. Everything went fine. But when I tried to compile my test code using the built g++, the compilation fails with error,
"/root/home/include/c++/4.9.1/x86_64-unknown-linux-gnu/bits/os_defines.h:39:22: fatal error: features.h: No such file or directory".
I can find a "features.h" in "/root/home/include/c++/4.9.1/parallel", but I feel that it should be there in "/root/home/include/c++/4.9.1/" itself.
I copied "/root/home/include/c++/4.9.1/parallel/features.h" to "/root/home/include/c++/4.9.1/" just to see what happens. Now it complains with error "whcar.h" not found.
Have I missed something.
Here are the steps I followed to build g++.
1. /root/home/gcc_build/objdir# ../gcc-4.9.1/configure --prefix=/root/home/ --disable-multilib
2. /root/home/gcc_build/objdir# make -j16
3. /root/home/gcc_build/objdir# make install
4. /root/home/gcc_build/test# /root/home/bin/g++ --sysroot /root/home -m64 test.cpp
I resolved the issue by removing sysroot option and pointing c++ include and library path to my home directory. One thing I noticed was that the g++ source does not come with libc and c header files, and libc has to be installed seperately. But with sysroot option, g++ was trying to look all the header files in my home directory.
Below is the command I used to successfully compile the code.
/root/home/bin/g++ -I /root/home/include/c++/4.9.1 -L /root/home/lib64 -Wl,--rpath=/root/home/lib64 --std=c++0x -m64 test.cpp
Take a look at the GCC Directory Options. It is important to use the correct "specifier" as well (-isystem, -L, -B, -I etc)
While trying to compile the boost asio example project
async_tcp_echo_server.cpp
I get errors like the following:
__MSABI_LONG was not declared in this file scope
BOOST_ASIO_NATIVE_ERROR(ERROR_BROKEN_PIPE)
__MSABI_LONG was not declared in this file scope
BOOST_ASIO_NATIVE_ERROR(ERROR_OPERATION ABORTED)
This is with Boost 1.55.0 and gcc version 4.8.3
boost was compiled with gcc and the following commands
./bootstrap.sh
./b2 cxxflags="-D__USE_W32_SOCKETS -D_WIN32_WINNT=0x0501
./b2 install
I attempted to compile the sample project with
gcc -std=C++11 -D__USE_W32_SOCKETS -D_WIN32_WINNT=0x0501 -I C:\boost_1_55_0 C:\boost_1_55_0\boost\asio.hpp async_tcp_echo_server.cpp
I know this is kind of old thread.
I managed to fix it by reinstalling the boost lib via Cygwin setup_x86.exe.
The version I installed is 1.57. And you don't have to put -D option in the command line.
Hope this may help.
1_57 version from cygwin setup doesn't help for me, it gives me fd_set errors.
This is what I tried to make the boost example code work:
add #define __MSABI_LONG(x) x at the top. - chilly, I know :)
add these flags to g++:-D_WIN32_WINNT=0x0501 -D__USE_W32_SOCKETS -std=c++11 -lboost_system -lws2_32
Voila!