I am a level -1 C++ programmer and this is my first program running c++ and I'm trying to run hello world in C++ but when I run ''myfirstprogram.cpp'' after compiling it.
CLion gives error
it can't run the .cpp file because it can't build it for some reason can someone help me?
I already have Xcode installed and command line tools.
in preferences CLion detected Xcode automatically.
gcc, cc and c++ is already correctly installed.
mehmetalibayram#MacBook-Pro-van-Mehmet ~> whereis gcc
/usr/bin/gcc
mehmetalibayram#MacBook-Pro-van-Mehmet ~> whereis cc
/usr/bin/cc
mehmetalibayram#MacBook-Pro-van-Mehmet ~> whereis g++
/usr/bin/g++
mehmetalibayram#MacBook-Pro-van-Mehmet ~>
/Applications/Jetbrains/CLion.app/Contents/bin/cmake/mac/bin/cmake --build "/Users/mehmetalibayram/OneDrive/CLion/cpp/cmake-build-debug" --target cpp -- -j 12
[ 33%] Linking CXX executable cpp
duplicate symbol '_main' in:
CMakeFiles/cpp.dir/main.cpp.o
CMakeFiles/cpp.dir/myfirstprogram/myfirstprogram.cpp.o
ld: 1 duplicate symbol for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
gmake[3]: *** [CMakeFiles/cpp.dir/build.make:119: cpp] Error 1
gmake[2]: *** [CMakeFiles/Makefile2:96: CMakeFiles/cpp.dir/all] Error 2
gmake[1]: *** [CMakeFiles/Makefile2:103: CMakeFiles/cpp.dir/rule] Error 2
gmake: *** [Makefile:138: cpp] Error 2
what did I do wrong, can someone help me please?
A function needs to be uniquely identifiable. In our case you have two functions with the same name, main, to be specific. Make sure that you have a single main function (which will be the entry point, by the way), so rename the other function to something else and call it from your main.
Related
I am using CLion as an IDE. When I create a project a main.cpp is automatically added. I would like to add 30-40 cpp files in a project and keep them as one project. Basically, I just wanna create many .cpp files in one folder and make CLion run them. I can do this in Pycharm by simply creating a project and add as many .py files as I want. But when I want to do this on CLion I got an error. Is it possible to add many .cpp files in a project in CLion, if yes, how can I do that?
An error could be seen in the below. I added a second.cpp to the project and run and this error message appears.
====================[ Build | trial | Debug ]===================================
/Applications/CLion.app/Contents/bin/cmake/mac/bin/cmake --build /Users/mertsaner/CLionProjects/trial/cmake-build-debug --target trial -- -j 6
Scanning dependencies of target trial
[ 66%] Building CXX object CMakeFiles/trial.dir/main.cpp.o
[ 66%] Building CXX object CMakeFiles/trial.dir/second.cpp.o
[100%] Linking CXX executable trial
duplicate symbol '_main' in:
CMakeFiles/trial.dir/main.cpp.o
CMakeFiles/trial.dir/second.cpp.o
ld: 1 duplicate symbol for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [trial] Error 1
make[2]: *** [CMakeFiles/trial.dir/all] Error 2
make[1]: *** [CMakeFiles/trial.dir/rule] Error 2
make: *** [trial] Error 2
Clion uses Cmake. If you want to create multiple executable files for eg with names (ex1.cpp, ex2.cpp. ex3.cpp) in one directory, you will do something like this in the CMake file of your directory.
cmake_minimum_required(VERSION 3.18)
project(some_project)
set(CMAKE_CXX_STANDARD 20)
add_executable(executable1 ex1.cpp)
add_executable(executable2 ex2.cpp)
add_executable(executable3 ex3.cpp)
and so on..
I am trying to install rs_bad2image(a convert tool from bag file to images). Here is the link about this tool: https://github.com/UnaNancyOwen/rs_bag2image/blob/master/README.md
However, after the configuration and generating done successfully, I faced this error about not able to find the library -lstdc++fs.
Here is the error code:
binfeng#Bins-iMac build % cmake ..
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/binfeng/Desktop/summer_project/rs_bag2image/rs_bag2image/build
binfeng#Bins-iMac build % cmake --build . --config Release
[ 33%] Linking CXX executable rs_bag2image
ld: library not found for -lstdc++fs
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [rs_bag2image] Error 1
make[1]: *** [CMakeFiles/rs_bag2image.dir/all] Error 2
make: *** [all] Error 2
If you have any idea or suggestions, please let me know. Thank in advance for any help here!
I am a beginner in OpenCV, using OpenCV 3.1.0 (downloaded from OpenCV.org) with Mac OS X 10.9.5.
I was trying to run a code which needs contrib.hpp, then I found the extra modules from Github. There is a command from the page:
$ cd <opencv_build_directory>
$ cmake -DOPENCV_EXTRA_MODULES_PATH=<opencv_contrib>/modules <opencv_source_directory>
$ make -j5
Everything was successful before I did make, it shows an error of no matching function for call to 'calibrateCamera' :
[ 92%] Building CXX object modules/aruco/CMakeFiles/opencv_aruco.dir/src/aruco.cpp.o
/Users/Youko/downloads/opencv_contrib-master/modules/aruco/src/aruco.cpp:1583:12: error:
no matching function for call to 'calibrateCamera'
return calibrateCamera(processedObjectPoints, processedImagePoints, ...
^~~~~~~~~~~~~~~
/Users/Youko/downloads/opencv-3.1.0/modules/calib3d/include/opencv2/calib3d.hpp:844:21: note:
candidate function not viable: requires at most 9 arguments, but 12 were
provided
CV_EXPORTS_W double calibrateCamera( InputArrayOfArrays objectPoints,
^
1 error generated.
make[2]: *** [modules/aruco/CMakeFiles/opencv_aruco.dir/src/aruco.cpp.o] Error 1
make[1]: *** [modules/aruco/CMakeFiles/opencv_aruco.dir/all] Error 2
make: *** [all] Error 2
In the case of I wanna keep the version of Mac OSX, I was thinking of change the version of OpenCV, so I've downloaded OpenCV from Github, and tried to install the OpenCV with following command (it was the same way as how I've installed OpenCV 3.1.0 successfully):
$ cd <opencv_source_directory>
$ mkdir release
$ cd release
$ cmake -G "Unix Makefiles" ..
$ make
$ sudo make install
But there is another problem when I tried make:
[ 44%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_decoder.cpp.o
[ 44%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_avfoundation_mac.mm.o
[ 44%] Linking CXX shared library ../../lib/libopencv_videoio.dylib
ld: framework not found CoreImage
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopencv_videoio.3.1.0.dylib] Error 1
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
make: *** [all] Error 2
I thought maybe there was something wrong with cmake, so I tried the following command as well but the same error occurred with make:
$ cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
I've googled for the problem and it seems like I must need the QuartzCore, but most of people said it should be included in the Xcode (I am using Xcode 6.2 btw). I tried both ways to figure it out but I still have no idea why I can't build the extra modules. (I think the most weird problem is that I cannot install OpenCV cloned from Github, but I just wanna show I tried this way but it wasn't successful FYI.)
I'd be most grateful for any help and suggestions!
I'm trying to install OpenCV on Fedora 21 with a cross compiler for ARM processor.
However, when i try to configure using Cmake 3.03, it gives the error:
*The CXX compiler identification is unknown
The C compiler identification is unknown
Check for working CXX compiler: /opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++
Check for working CXX compiler: /opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++ -- broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCXXCompiler.cmake:54 (message):
The C++ compiler "/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++" is
not able to compile a simple test program.
It fails with the following output:
Change Dir: /opt/opencv/relarm/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/gmake" "cmTryCompileExec1616328985/fast"
/usr/bin/gmake -f CMakeFiles/cmTryCompileExec1616328985.dir/build.make
CMakeFiles/cmTryCompileExec1616328985.dir/build
gmake[1]: Entering directory '/opt/opencv/relarm/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report
/opt/opencv/relarm/CMakeFiles/CMakeTmp/CMakeFiles 1
Building CXX object
CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o
/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++ -o
CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o -c
/opt/opencv/relarm/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
/opt/FriendlyARM/toolschain/4.5.1/lib/gcc/arm-none-linux-gnueabi/4.5.1/../../../../arm-none-linux-gnueabi/bin/as:
error while loading shared libraries: libz.so.1: cannot open shared object
file: No such file or directory
CMakeFiles/cmTryCompileExec1616328985.dir/build.make:57: recipe for target
'CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o' failed
gmake[1]: Leaving directory '/opt/opencv/relarm/CMakeFiles/CMakeTmp'
gmake[1]: ***
[CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o] Error 1
Makefile:118: recipe for target 'cmTryCompileExec1616328985/fast' failed
gmake: *** [cmTryCompileExec1616328985/fast] Error 2
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:63 (project)
Configuring incomplete, errors occurred!
See also "/opt/opencv/relarm/CMakeFiles/CMakeOutput.log".
See also "/opt/opencv/relarm/CMakeFiles/CMakeError.log".*
I tried adding Path to my bash_profile, so that it looks like this:
# .bash_profile
# Get the aliases and functions if [ -f ~/.bashrc ]; then
. ~/.bashrc fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin export PATH=$PATH:/usr/local/bin:/usr/local/sbin:/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++:/usr/bin/gmake:/usr/share/bin:/usr/share/sbin
I Have been googling around for hours but couldn't find any helpful steps. Any help would be appreciated.
Thanks in advance.
From the output it appears that cmake was able to find your cross compiler but as the output says it can't compile a simple program. I would start with creating Hello World in C++ and trying to compile that with your cross compiler. If that doesn't work that is your first problem. If it does work then I would guess it has to do with some environment variable(s). You could try to have cmake print the environment variables before it tries to compile the simple C++ program and compare to your shell environment variables, sorry I can't be more helpful than that.
Update:
So I downloaded FriendlyArm and the binaries it provides are 32 bit ELF's so you will need the 32 bit version of libz. A yum install zlib.i686 should solve your issue. The FriendlyArm toolchain works for me and I have zlib.i686 installed already. If you get any other errors about missing shared objects make sure you have the 32 bit version installed.
I download the source code of asterisk on my macbook pro, which the OS X version is 10.9 ,then following the README.txt to compile it, but it failed ,and then I tried almost all the release version, but all the compiled results are the same, the compile error is as following,please help me to check it ,and how can I compile it on Mavericks; Appreciate!
ranlib libmxml.a gcc -o menuselect menuselect.o strcompat.o
menuselect_stub.o mxml/libmxml.a Generating input for menuselect
... menuselect/menuselect --check-deps menuselect.makeopts
menuselect/menuselect --check-deps menuselect.makeopts
Generating embedded module rules ...
[CC] stereorize.c ->
stereorize.o error: invalid value '6' in '-O6' make[1]: *
[stereorize.o] Error 1 make: [utils] Error 2
"-O4" nor "-O3" work...
sh-3.2# make ASTCFLAGS="-O4" [LD] chan_iax2.o iax2-parser.o iax2-provision.o -> chan_iax2.so
ld: lto: could not merge in
iax2-parser.o because 'Linking globals named 'ast_tvdiff_sec': symbol
multiply defined!', using libLTO version 'LLVM version 3.3svn, from
Apple Clang 5.0 (build 500.2.79)' for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: * [chan_iax2.so] Error 1
make: * [channels] Error 2