I recently updated my clang++ compiler in my debian Linux to version 3.5. I compile my file using clang++ with the line in terminal
clang++ -std=c++1y -stdlib=libc++ -c -g -O0 -Wall -Wextra -pedantic main.cpp
what show up afterward is
main.cpp:5:10:fatal error: 'algorithm' file not found
#include <algorithm>
1 error generated
*** [main.o] Error 1
but when I tried using
locate algorithm
There are many file in the /usr/include/c++/4.6/ showed up, so I believe that the file are in there. I am new to Linux and if possible, please make explanation to be more detailed.
Thanks for your time.
Related
I am having an issue due to my gcc missing standard libraries.
copying blpapi/schema.py -> build/lib.macosx-10.7-x86_64-3.7/blpapi
running build_ext
building 'blpapi._internals' extension
creating build/temp.macosx-10.7-x86_64-3.7
creating build/temp.macosx-10.7-x86_64-3.7/blpapi
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/anaconda3/envs/invtools/include -arch x86_64 -I/anaconda3/envs/invtools/include -arch x86_64 -I/usr/local/lib/blpapi_cpp_3.8.1.1/include -I/anaconda3/envs/invtools/include/python3.7m -c blpapi/internals_wrap.cxx -o build/temp.macosx-10.7-x86_64-3.7/blpapi/internals_wrap.o
warning: include path for stdlibc++ headers not found; pass '-std=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
blpapi/internals_wrap.cxx:3101:10: fatal error: 'stdexcept' file not found
#include <stdexcept>
^~~~~~~~~~~
1 warning and 1 error generated.
error: command 'gcc' failed with exit status 1
I had a different issue initially. It was something about cannot find type uint8_t. And someone suggested to delete files in: /usr/local/include/. And that causes the above now. It is because there are no standard libraries now. I installed this /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg and now I have standard lib in /usr/include. Which I copied to /usr/local/indclude/ to no avail. brew link gcc tells me:
Warning: Already linked: /usr/local/Cellar/gcc/8.2.0
To relink: brew unlink gcc && brew link gcc
How do I resolve this issue?
I'm trying to use MinGW-W64 instead of MinGW in Codelite. When I compile simple "hello, world" project it's all right. But when I try to link some libraries, I get a strange linker error. Project with exactly same settings compiles by MinGW with any problems. There are build output for both variants:
MinGW GCC 4.8.1
`C:\Windows\system32\cmd.exe /C D:/apps/mingw/bin/mingw32-make.exe -j8 SHELL=cmd.exe -e -f Makefile
"----------Building project:[ code - Debug ]----------"
mingw32-make.exe[1]: Entering directory 'D:/Projects/codelite/code'
codelite-cc D:/apps/mingw/bin/g++.exe -c "D:/Projects/codelite/code/src/main.cpp" -Wfatal-errors -g -O0 -pedantic -W -std=c++11 -Wall -o ./Debug/src_main.cpp.o -I./inc/
D:/apps/mingw/bin/g++.exe -o bin/code #"code.txt" -L./lib/ -lopengl32
mingw32-make.exe[1]: Leaving directory 'D:/Projects/codelite/code'
====0 errors, 0 warnings====`
MinGW-W64 GCC 5.2.0
`C:\Windows\system32\cmd.exe /C D:/apps/mingw-w64/mingw32/bin/mingw32-make.exe -j8 SHELL=cmd.exe -e -f Makefile
"----------Building project:[ code - Debug ]----------"
mingw32-make.exe[1]: Entering directory 'D:/Projects/codelite/code'
codelite-cc D:/apps/mingw-w64/mingw32/bin/g++.exe -c "D:/Projects/codelite/code/src/main.cpp" -Wfatal-errors -g -O0 -pedantic -W -std=c++11 -Wall -o ./Debug/src_main.cpp.o -I./inc/
D:/apps/mingw-w64/mingw32/bin/g++.exe -o bin/code #"code.txt" -L./lib/ -lopengl32
g++.exe: error: #code.txt -L./lib/: No such file or directory
mingw32-make.exe[1]: *** [bin/code] Error 1
code.mk:78: recipe for target 'bin/code' failed
mingw32-make.exe[1]: Leaving directory 'D:/Projects/codelite/code'
mingw32-make.exe: *** [All] Error 2
Makefile:4: recipe for target 'All' failed
====1 errors, 0 warnings====`
This looks like a bug in your toolchain and not in CodeLite.
There is a space between the "#code.text" and -L./lib and for some reason g++ does not see it...
I put my money on the mingw32-make tool. You can tell CodeLite to use the mingw32-make.exe from the 4.8.1 version (which worked): settings->build settings->compilers->[YOUR COMPILER NAME]->Make
Another option is to disable the option that tells CodeLite to generate Makefile that passes the object list via file to the compiler:
Settings->Build Settings->compilers->[YOUR COMPILER NAME]->Advanced tab and uncheck the option: pass object list to the linker via file
Lately i too have found the similar problem. Later i was able to figure out the issue. We just to need to go to the project settings under change makefile generator default to codelite makefile generator i think that will work.
I m trying to build using gcc arm cross compiler and i get following error
Building file: ../src/application.c
Invoking: GCC C Compiler
arm-linux-gcc -O3 -Wall -c -I -fmessage-length=0 -MMD -MP -MF"src/application.d" -MT"src/application.d" -o "src/application.o" "../src/application.c"
/bin/sh: 1: arm-linux-gcc: not found
i also check my path setting and i had proper valid path to the arm-linux-gcc
and also linux "which" command gives the correct path of arm-linux-gcc..
could some one let me know what i am doing wrong..?
i figured it out,very silly mistake. i was trying to run 32-bit binary on a 64-bit system.
I have some trouble with crosscompiling C++ program which takes advantage of openMP library. I am using Linux Ubuntu 12.04 LTS. I want to obtain executable file runnable on Windows.
I have no problem with compiling my program with OMP with regular g++ command:
g++ a.cpp b.cpp -o OMPres -pg -O3 -I./CBLAS/include -L./ -lcblas
Also when I try crosscompilation without OMP, everything runs perfectly fine:
x86_64-w64-mingw32-g++ a.cpp b.cpp -O3 -I./CBLAS/include ./CBLAS/cblas_WIN64.a ./BLAS/blas_WIN64.a -o res.exe -l gfortran -static
But when I try to crosscompile it with OMP using following command:
x86_64-w64-mingw32-g++ a.cpp b.cpp -O3 -I./CBLAS/include ./CBLAS/cblas_WIN64.a ./BLAS/blas_WIN64.a -o OMPres.exe -l gfortran -static -fopenmp
I get this error:
a.cpp:41:17: fatal error: omp.h: No such file or directory
compilation terminated.
I found where omp.h file is located on my disk, and added the path to the command. After executing it:
x86_64-w64-mingw32-g++ a.cpp b.cpp -O3 -I./CBLAS/include -I/usr/lib/gcc/x86_64-linux-gnu/4.6/include ./CBLAS/cblas_WIN64.a ./BLAS/blas_WIN64.a -o OMPres.exe -l gfortran -static -fopenmp
I got another error: x86_64-w64-mingw32-g++: error: libgomp.spec: No such file or directory
As I also have this file on the disk I tried to copy it in various places and finaly it worked when I copied it directly into the directory where compilation takes place. Then it produced another error:
/usr/bin/x86_64-w64-mingw32-ld: cannot find -lgomp
/usr/bin/x86_64-w64-mingw32-ld: cannot find -lrt
collect2: ld returned 1 exit status
I don't have a good understanding of how compilers exactly work. I tried to update all mingw-w64 compilers that I could find with apt-cache search but nothing helped. I have no idea what more I can do :(.
First, #nmaier is completely correct in that the Ubuntu x86_64-w64-mingw32 toolchain is crippled, and that you can rebuild the toolchain yourself.
I, however, suggest that you use MXE, which saves you the time of manually compiling gcc and every dependency of it. The steps below should be enough for your purpose:
# Get MXE
git clone https://github.com/mxe/mxe.git && cd mxe
# Settings
cat <<EOF > settings.mk
MXE_TARGETS := x86_64-w64-mingw32.static
JOBS := 4
EOF
# Build gcc, libgomp, blas, and cblas. It will take a while
make -j2 libgomp cblas
# Add toolchain to PATH
# See http://htmlpreview.github.io/?https://github.com/mxe/mxe/blob/master/index.html#tutorial step 4
export PATH=`pwd`/usr/bin:$PATH
# You don't need -I./CBLAS/include ./CBLAS/cblas_WIN64.a ./BLAS/blas_WIN64.a
# because headers and libraries are installed to standard location and
# I already used `-lcblas -lblas`.
x86_64-w64-mingw32-g++ a.cpp b.cpp -fopenmp -O3 -o res.exe -lcblas -lblas -lgfortran -lquadmath
Your x86_64-w64-mingw32 toolchain appears to have been build without libgomp.
You could check your supplier/distribution if it there additional or variant packages that have libgomp.
Or switch to a different supplier/distribution.
Or you could rebuild (or build in the first place) a cross gcc with --enable-libgomp. This is kinda the hard way.
PS:
Adding paths that do not correspond with your platform, like -I/usr/lib/gcc/x86_64-linux-gnu/4.6/include, is a bad idea in general, and will most certainly fail... This kinda creates a Franken-compiler.
When I try to run clang as my C compiler I get an error (I think a linker error)
Compilation started at Sun Nov 11 14:34:55
make -k
clang -std=c99 -ggdb -o0 -Wall -Werror helloworld.c -o helloworld
clang: warning: unknown platform, assuming -mfloat-abi=soft
/usr/bin/ld: cannot find crt1.o: No such file or directory
/usr/bin/ld: cannot find crti.o: No such file or directory
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [helloworld] Error 1
Compilation exited abnormally with code 2 at Sun Nov 11 14:34:56
I actually re-installed the Raspbian image thinking that the problem would go away but it persists. Raspbian version is the latest Raspbian Wheezy hard float ABI (2012-10-28).
As you've essentially figured out, the installed clang is unusably broken. If you installed this through a package manager, complain to whoever distributes the package, because they clearly didn't bother testing it.