I am new to OpenMP, and my professor gives us a project to do. There are only three files in the folder: a C++ source code a0.cpp, a header a0.h, and a Makefile. When I want to run the code in my terminal, it says:
clang: error: unsupported option '-fopenmp'
clang: error: unsupported option '-fopenmp'
make: *** [a0] Error 1
I am using a Macbook, and I do not know how to fix this. Can you help me? Thanks.
After installing libomp with homebrew using:
brew install libomp
I was able to compile an OpenMP program with this:
clang -Xpreprocessor -fopenmp -I/usr/local/include -L/usr/local/lib -lomp main.c -o main
If you are using C++, you'd likely want:
clang++ -Xpreprocessor -fopenmp -I/usr/local/include -L/usr/local/lib -lomp main.cpp -o main
Related
Im compiling a program I made using make and I get this error
c++: error: unrecognized command-line option ‘-target’
make[3]: *** [libs/system/CMakeFiles/system.dir/build.make:76: libs/system/CMakeFiles/system.dir/src/system/syscalls.cpp.o] Error 1
make[2]: *** [CMakeFiles/Makefile2:504: libs/system/CMakeFiles/system.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:243: CMakeFiles/image-uefi.dir/rule] Error 2
make: *** [Makefile:137: image-uefi] Error 2
Im running Arch Linux with Clang-13, CMake and all of base-devel installed.
Any help would be appreciated, please dont be condescending I just installed Arch Linux and am getting this error, in Fedora compiling the exact same app provides no error.
The line which created the error is this, it should be the offending linux since the error in question(the top line) complains about -target being unrecognized.
cd /home/user/toy-kernel/build/libs/system && /usr/bin/c++ -I/home/user/toy-kernel/libs/system/src -target x86_64-none-elf -mcmodel=kernel -fno-exceptions -fno-use-cxa-atexit -fno-rtti -nostdlib -ffreestanding -fno-threadsafe-statics -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4a -mno-3dnow -mno-3dnowa -std=gnu++20 -MD -MT libs/system/CMakeFiles/system.dir/src/system/syscalls.cpp.o -MF CMakeFiles/system.dir/src/system/syscalls.cpp.o.d -o CMakeFiles/system.dir/src/system/syscalls.cpp.o -c /home/user/toy-kernel/libs/system/src/system/syscalls.cpp
In my case, c++ was the g++ compiler instead of the clang compiler, if you are having a similar issue try updating g++ or clang++(on older macs you may need to have to use brew to install those) or going in your /usr/bin directory(for mac and linux, I never used windows cant help you) and replacing the files(though only do that if you absolutely know what your doing!).
I'm trying to install HLA-LA on my 2016 MacBookPro (running Mojave 10.14.3) but I've been having issues compiling the makefile. I've installed all the dependencies, added the bamtools and boost paths as the README describes, and added CFLAGS to specify c++11. Still, when I run the makefile I get the following error:
$ make all
/usr/local/Cellar/gcc/8.3.0/bin/g++-8 -I/usr/local/Cellar/boost/1.68.0_1/include -I/usr/local/Cellar/bamtools/2.5.1/include/bamtools -I/usr/local/Cellar/bamtools/2.5.1/src -std=c++11 -ggdb -O2 -fopenmp -std=gnu++0x -fstack-protector-all HLA-LA.cpp -c -o ../obj/HLA-LA.o;
/usr/local/Cellar/gcc/8.3.0/bin/g++-8 -I/usr/local/Cellar/boost/1.68.0_1/include -I/usr/local/Cellar/bamtools/2.5.1/include/bamtools -I/usr/local/Cellar/bamtools/2.5.1/src -std=c++11 -ggdb -O2 -fopenmp -std=gnu++0x -fstack-protector-all ../obj/Edge.o ../obj/Graph.o ../obj/GraphAndEdgeIndex.o ../obj/Node.o ../obj/HaplotypePanel.o ../obj/simpleGraphSimulator.o ../obj/LocusCodeAllocation.o ../obj/simulator.o ../obj/readSimulator.o ../obj/trueReadLevels.o ../obj/processBAM.o ../obj/protoSeeds.o ../obj/oneRead.o ../obj/oneReadPair.o ../obj/oneReadPairwithSeedChains.o ../obj/alignerBase.o ../obj/alignmentContext.o ../obj/extensionAligner.o ../obj/BWAmapper.o ../obj/Bowtie2mapper.o ../obj/statistics.o ../obj/VirtualNWUnique.o ../obj/PRGContigBAMAlignment.o ../obj/verboseSeedChain.o ../obj/HLATyper.o ../obj/pathFinder.o ../obj/linearALTs.o ../obj/oneExonPosition.o ../obj/seedChain.o ../obj/Utilities.o ../obj/HLA-LA.o -o ../bin/HLA-LA -L/usr/local/Cellar/boost/1.68.0_1/lib -L/usr/local/Cellar/bamtools/2.5.1/lib64 -L/usr/local/Cellar/zlib/1.2.11/lib -lboost_random -lboost_filesystem -lboost_system -lbamtools -lz -lboost_serialization;
collect2: fatal error: ld terminated with signal 11 [Segmentation fault: 11]
compilation terminated.
ld: unexpected token: !tapi-tbd-v3 file '/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib/libSystem.tbd' for architecture x86_64
make: *** [HLA-LA] Error 1
I've seen other people with similar errors, but the recommended fixes havent worked. I've also tried specifying CLT via the path: /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/lib/ but it doesn't change the outcome at all. I read some thread that suggested it could be an ld issue but I'm not sure how I can fix that? Here are my specs:
macOS: 10.14.3-x86_64
CLT: 10.1.0.0.1.1539992718
Xcode: 10.1
So I just reinstall gcc using home brew, when I compile a programme and try to use libstdc++... I get a error:
dhcp-18-189-47-44:openmp_code myname$ g++-4.8 -fopenmp tmp2.cpp -stdlib=libstdc++
g++-4.8: error: unrecognized command line option '-stdlib=libstdc++'
Someone has idea what is happening ? Thank you.
As the error message clearly says, g++ does not support -stdlib as an option. You can simply remove that option from the command line.
g++-4.8 -fopenmp tmp2.cpp
should be all you need.
I have recently installed R 3.1.3. I am using a Mac with Yosemite system and my Xcode is of version 6.2.
After I source the CPP file using sourceCpp("try.cpp"), I get the following error. My try.cpp file has
#include <RcppArmadillo.h>
#include <math.h>
The error is below in R
ld: warning: directory not found for option '-L/usr/local/lib/gcc/x86_64-apple-darwin13.0.0/4.8.2'
ld: library not found for -lquadmath
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [sourceCpp_15736.so] Error 1
clang++ -arch x86_64 -ftemplate-depth-256 -I/Library/Frameworks/R.framework/Resources/include -I/usr/local/include -I/usr/local/include/freetype2 -I/opt/X11/include -I"/Library/Frameworks/R.framework/Versions/3.1/Resources/library/Rcpp/include" -I"/Library/Frameworks/R.framework/Versions/3.1/Resources/library/RcppArmadillo/include" -fPIC -mtune=core2 -O3 -c CAR.cpp -o CAR.o
clang++ -arch x86_64 -ftemplate-depth-256 -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module - multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib - L/usr/local/lib -o sourceCpp_15736.so CAR.o -L/Library/Frameworks/R.framework/Resources/lib -lRlapack -L/Library/Frameworks/R.framework/Resources/lib -lRblas -L/usr/local/lib/gcc/x86_64-apple-darwin13.0.0/4.8.2 -lgfortran -lquadmath -lm -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
Error in sourceCpp("~/RA2015/Code/BYMCAR/CAR.cpp") :
Error 1 occurred building shared library.
WARNING: The tools required to build C++ code for R were not found.
Please install Command Line Tools for XCode (or equivalent).
I have installed the command line tools for Xcode, my gfortran version is 4.9.0
But when I type
gfortran --version
It has the following error:
gfortran: warning: couldn’t understand kern.osversion ‘14.1.0
When I use R 3.1.2, I did not encounter this problem before!
Any help is appreciated!
After some finding I find a solution online.
If you have same problem with me, just type
curl -O http://r.research.att.com/libs/gfortran-4.8.2-darwin13.tar.bz2
sudo tar fvxz gfortran-4.8.2-darwin13.tar.bz2 -C /
on the terminal and sourceCpp can run smoothly.
A detailed explanation can be found at [http://www.thecoatlessprofessor.com/programming/rcpp-rcpparmadillo-and-os-x-mavericks-lgfortran-and-lquadmath-error]
I've taken the great advice from this answer, checked the file list for libbotan1.10-dev and found /usr/lib/libbotan-1.10.a, so I used the linker flag -lbotan-1.10.
I've successfully been able to code and compile websocket++, json-spirit, connector/c++, and boost::lockfree::spsc_queue.
I'm now trying to use botan's passhash9 to hash passwords.
When I try to compile with
g++ -Ofast -march=native -o btServer broadcast_server_tls.cpp
-I ~/websocketpp-master/ -std=c++0x -D_WEBSOCKETPP_CPP11_STL_
-D_WEBSOCKETPP_NO_CPP11_REGEX_ -lboost_regex -lboost_system
-pthread -L/usr/lib -lssl -lcrypto -ljson_spirit -lmysqlcppconn -lbotan-1.10
g++ gives an error on the #include <botan/botan.h> line, saying "broadcast_server_tls.cpp:12:25: fatal error: botan/botan.h: No such file or directory".
To install on Ubuntu 12.10, I did apt-get install libbotan1.10-dev.
How can I correct this?
You should compile as:
g++ "whatever_source_file" "whatever flags you are already using" -I/usr/include/botan-1.10/