Related
I have been working on a project (a game to be specific) and I feel that I should start over with different libraries. So when doing this I reinstalled Code::Blocks and setup my new libraries and includes.
But as of now Im having a problem starting u[ my new project to test if all of the includes work. This problem is: libstdc++-6.dll was not found. At first i wondered if I could just find this file online, but its nowhere to be found(or at least the many places I have searched...) Soon after, I tried loading up my old project, and the same problem happened again(wierd... ._.) I was thinking its maybe my compiler, so I used my older compiler and it did the same thing! At this moment I held the problem off for tomorrow(which is today)
So my question is: If anyone else had this problem, how would you solve it?
Im using Code::Blocks with MinGW as the compiler on Windows Vista 32 bit.
*****EDIT*****
Here are the Build options in my project. Note that these are the settings in the Project, not the global compiler:
In (project name)->Compiler settings->Otehr options:
(I use // to seperate the commands)
-mthreads//
-fmessage-length=0//
-fexceptions//
-fident//
In (project name)->Compiler settings->#define:
WIN32//
_WINDOWS//
In (project name)->Linker settings->Other linker options:
-static-libstdc++//
-static-libgcc//
-Wl,--enable-auto-image-base//
-Wl,--add-stdcall-alias//
-Wl,--enable-auto-import//
In linker->link libraries i have various links to files with a .a extension, these files include Bullet PHysics, Ogre3D, and SFML
In the search directories i have links to the MinGW/bin, and the MinGW/lib directories, along with other links to different libraries.
My Compiler is MinGW, a GNU GCC compiler for windows 32 bit. and the IDE is Codeblocks. Also note that in Debug and Release settings on the project, there is nothing.
Most of these setings are also pieces that i got from the Ogre3D Application setup tutorial if that is of any help.
If you are using MingW to compile C++ code on Windows, you may like to add the options -static-libgcc and -static-libstdc++ to link the C and C++ standard libraries statically and thus remove the need to carry around any separate copies of those. Version management of libraries is a pain in Windows, so I've found this approach the quickest and cleanest solution to creating Windows binaries.
As far as I know, this is the C++ Runtime Library. So it depends on the compiler you use to create your program (A new version will include some C++0x stuff, an older version will probably not for instance. It depends of the compiler and of its version).
If you use MinGW then you should use the libstdc++-6.dll found into the folder of this compiler. MinGW/bin folder should be the place to search for it on your computer.
If you copy this file in the same directory as your executable, it should be OK.
Simply removing libstdc++-6.dll.a \ libstdc++.dll.a from the mingw directory fixes this.
I tried using the flag -static-libstdc++ but this did not work for me.
I found the solution in: http://ghc.haskell.org/trac/ghc/ticket/4468#
This error also occurred when I compiled with MinGW using gcc with the following options:
-lstdc++ -lm, rather than g++
I did not notice these options, and added: -static-libgcc -static-libstdc++
I still got the error, and finally realized I was using gcc, and changed the compiler to g++ and removed -stdc++ and -lm, and everything linked fine.
(I was using LINK.c rather than LINK.cpp... use make -pn | less to see what everything does!)
I don't know why the previous author was using gcc with -stdc++. I don't see any reason not to use g++ which will link with stdc++ automatically... and as far as I know, provide other benefits (it is the c++ compiler after all).
useful to windows users who use eclipse for c/c++ but run *.exe file and get an error: "missing libstdc++6.dll"
4 ways to solve it
Eclipse ->"Project" -> "Properties" -> "C/C++ Build" -> "Settings" -> "Tool Settings" -> "MinGW C++ Linker" -> "Misscellaneous" -> "Linker flags" (add '-static' to it)
Add '{{the path where your MinGW was installed}}/bin' to current user environment variable - "Path" in Windows, then reboot eclipse, and finally recompile.
Add '{{the path where your MinGW was installed}}/bin' to Windows environment variable - "Path", then reboot eclipse, and finally recompile.
Copy the file "libstdc++-6.dll" to the path where the *.exe file is running, then rerun. (this is not a good way)
Note: the file "libstdc++-6.dll" is in the folder '{{the path where your MinGW was installed}}/bin'
I use Eclipse under Fedora 20 with MinGW for cross compile.
Use these settings and the program won't ask for libstdc++-6.dll any more.
Project type - Cross GCC
Cross Settings
Prefix: x86_64-w64-mingw32-
Path: /usr/bin
Cross GCC Compiler
Command: gcc
All Options:
-I/usr/x86_64-w64-mingw32/sys-root/mingw/include -O3
-Wall -c -fmessage-length=0
Includes: /usr/x86_64-w64-mingw32/sys-root/mingw/include
Cross G++ Compiler
Command: g++
All Options: -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -O3
-Wall -c -fmessage-length=0
Includes: /usr/x86_64-w64-mingw32/sys-root/mingw/include
Cross G++ Linker
Command: g++ -static-libstdc++ -static-libgcc
All Options: -L/usr/x86_64-w64-mingw32/sys-root/mingw/lib -L/usr/x86_64-w64-mingw32/sys-root/mingw/bin
Library search path (-L):
/usr/x86_64-w64-mingw32/sys-root/mingw/lib
/usr/x86_64-w64-mingw32/sys-root/mingw/bin
I just had this issue.. I just added the MinGW\bin directory to the path environment variable, and it solved the issue.
I placed the libstdc++-6.dll file in the same folder where exe file is generated.
You only need to add your "mingw-install-directory"/bin/ to your Path in your System environment variables ... that's it !!
I had same problem. i fixed it. i was using Codeblocks and i save my .cpp file on desktop instead of saving it in Codeblocks file where MinGW is located. So i copied all dll files from MinGW>>bin folder to where my .cpp file was saved.
You can also copy the dll files in the directory of your exe file
I had this problem too. I was compiling in command prompt and used the flag -static.
My command before:
"g++ test.cpp -o test.exe"
and afterwards:
"g++ test.cpp -o test.exe -static"
I had the same problem and I solved it by running the compiled exe as an administrator.
I have been working on a project (a game to be specific) and I feel that I should start over with different libraries. So when doing this I reinstalled Code::Blocks and setup my new libraries and includes.
But as of now Im having a problem starting u[ my new project to test if all of the includes work. This problem is: libstdc++-6.dll was not found. At first i wondered if I could just find this file online, but its nowhere to be found(or at least the many places I have searched...) Soon after, I tried loading up my old project, and the same problem happened again(wierd... ._.) I was thinking its maybe my compiler, so I used my older compiler and it did the same thing! At this moment I held the problem off for tomorrow(which is today)
So my question is: If anyone else had this problem, how would you solve it?
Im using Code::Blocks with MinGW as the compiler on Windows Vista 32 bit.
*****EDIT*****
Here are the Build options in my project. Note that these are the settings in the Project, not the global compiler:
In (project name)->Compiler settings->Otehr options:
(I use // to seperate the commands)
-mthreads//
-fmessage-length=0//
-fexceptions//
-fident//
In (project name)->Compiler settings->#define:
WIN32//
_WINDOWS//
In (project name)->Linker settings->Other linker options:
-static-libstdc++//
-static-libgcc//
-Wl,--enable-auto-image-base//
-Wl,--add-stdcall-alias//
-Wl,--enable-auto-import//
In linker->link libraries i have various links to files with a .a extension, these files include Bullet PHysics, Ogre3D, and SFML
In the search directories i have links to the MinGW/bin, and the MinGW/lib directories, along with other links to different libraries.
My Compiler is MinGW, a GNU GCC compiler for windows 32 bit. and the IDE is Codeblocks. Also note that in Debug and Release settings on the project, there is nothing.
Most of these setings are also pieces that i got from the Ogre3D Application setup tutorial if that is of any help.
If you are using MingW to compile C++ code on Windows, you may like to add the options -static-libgcc and -static-libstdc++ to link the C and C++ standard libraries statically and thus remove the need to carry around any separate copies of those. Version management of libraries is a pain in Windows, so I've found this approach the quickest and cleanest solution to creating Windows binaries.
As far as I know, this is the C++ Runtime Library. So it depends on the compiler you use to create your program (A new version will include some C++0x stuff, an older version will probably not for instance. It depends of the compiler and of its version).
If you use MinGW then you should use the libstdc++-6.dll found into the folder of this compiler. MinGW/bin folder should be the place to search for it on your computer.
If you copy this file in the same directory as your executable, it should be OK.
Simply removing libstdc++-6.dll.a \ libstdc++.dll.a from the mingw directory fixes this.
I tried using the flag -static-libstdc++ but this did not work for me.
I found the solution in: http://ghc.haskell.org/trac/ghc/ticket/4468#
This error also occurred when I compiled with MinGW using gcc with the following options:
-lstdc++ -lm, rather than g++
I did not notice these options, and added: -static-libgcc -static-libstdc++
I still got the error, and finally realized I was using gcc, and changed the compiler to g++ and removed -stdc++ and -lm, and everything linked fine.
(I was using LINK.c rather than LINK.cpp... use make -pn | less to see what everything does!)
I don't know why the previous author was using gcc with -stdc++. I don't see any reason not to use g++ which will link with stdc++ automatically... and as far as I know, provide other benefits (it is the c++ compiler after all).
useful to windows users who use eclipse for c/c++ but run *.exe file and get an error: "missing libstdc++6.dll"
4 ways to solve it
Eclipse ->"Project" -> "Properties" -> "C/C++ Build" -> "Settings" -> "Tool Settings" -> "MinGW C++ Linker" -> "Misscellaneous" -> "Linker flags" (add '-static' to it)
Add '{{the path where your MinGW was installed}}/bin' to current user environment variable - "Path" in Windows, then reboot eclipse, and finally recompile.
Add '{{the path where your MinGW was installed}}/bin' to Windows environment variable - "Path", then reboot eclipse, and finally recompile.
Copy the file "libstdc++-6.dll" to the path where the *.exe file is running, then rerun. (this is not a good way)
Note: the file "libstdc++-6.dll" is in the folder '{{the path where your MinGW was installed}}/bin'
I use Eclipse under Fedora 20 with MinGW for cross compile.
Use these settings and the program won't ask for libstdc++-6.dll any more.
Project type - Cross GCC
Cross Settings
Prefix: x86_64-w64-mingw32-
Path: /usr/bin
Cross GCC Compiler
Command: gcc
All Options:
-I/usr/x86_64-w64-mingw32/sys-root/mingw/include -O3
-Wall -c -fmessage-length=0
Includes: /usr/x86_64-w64-mingw32/sys-root/mingw/include
Cross G++ Compiler
Command: g++
All Options: -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -O3
-Wall -c -fmessage-length=0
Includes: /usr/x86_64-w64-mingw32/sys-root/mingw/include
Cross G++ Linker
Command: g++ -static-libstdc++ -static-libgcc
All Options: -L/usr/x86_64-w64-mingw32/sys-root/mingw/lib -L/usr/x86_64-w64-mingw32/sys-root/mingw/bin
Library search path (-L):
/usr/x86_64-w64-mingw32/sys-root/mingw/lib
/usr/x86_64-w64-mingw32/sys-root/mingw/bin
I just had this issue.. I just added the MinGW\bin directory to the path environment variable, and it solved the issue.
I placed the libstdc++-6.dll file in the same folder where exe file is generated.
You only need to add your "mingw-install-directory"/bin/ to your Path in your System environment variables ... that's it !!
I had same problem. i fixed it. i was using Codeblocks and i save my .cpp file on desktop instead of saving it in Codeblocks file where MinGW is located. So i copied all dll files from MinGW>>bin folder to where my .cpp file was saved.
You can also copy the dll files in the directory of your exe file
I had this problem too. I was compiling in command prompt and used the flag -static.
My command before:
"g++ test.cpp -o test.exe"
and afterwards:
"g++ test.cpp -o test.exe -static"
I had the same problem and I solved it by running the compiled exe as an administrator.
I have been working on a project (a game to be specific) and I feel that I should start over with different libraries. So when doing this I reinstalled Code::Blocks and setup my new libraries and includes.
But as of now Im having a problem starting u[ my new project to test if all of the includes work. This problem is: libstdc++-6.dll was not found. At first i wondered if I could just find this file online, but its nowhere to be found(or at least the many places I have searched...) Soon after, I tried loading up my old project, and the same problem happened again(wierd... ._.) I was thinking its maybe my compiler, so I used my older compiler and it did the same thing! At this moment I held the problem off for tomorrow(which is today)
So my question is: If anyone else had this problem, how would you solve it?
Im using Code::Blocks with MinGW as the compiler on Windows Vista 32 bit.
*****EDIT*****
Here are the Build options in my project. Note that these are the settings in the Project, not the global compiler:
In (project name)->Compiler settings->Otehr options:
(I use // to seperate the commands)
-mthreads//
-fmessage-length=0//
-fexceptions//
-fident//
In (project name)->Compiler settings->#define:
WIN32//
_WINDOWS//
In (project name)->Linker settings->Other linker options:
-static-libstdc++//
-static-libgcc//
-Wl,--enable-auto-image-base//
-Wl,--add-stdcall-alias//
-Wl,--enable-auto-import//
In linker->link libraries i have various links to files with a .a extension, these files include Bullet PHysics, Ogre3D, and SFML
In the search directories i have links to the MinGW/bin, and the MinGW/lib directories, along with other links to different libraries.
My Compiler is MinGW, a GNU GCC compiler for windows 32 bit. and the IDE is Codeblocks. Also note that in Debug and Release settings on the project, there is nothing.
Most of these setings are also pieces that i got from the Ogre3D Application setup tutorial if that is of any help.
If you are using MingW to compile C++ code on Windows, you may like to add the options -static-libgcc and -static-libstdc++ to link the C and C++ standard libraries statically and thus remove the need to carry around any separate copies of those. Version management of libraries is a pain in Windows, so I've found this approach the quickest and cleanest solution to creating Windows binaries.
As far as I know, this is the C++ Runtime Library. So it depends on the compiler you use to create your program (A new version will include some C++0x stuff, an older version will probably not for instance. It depends of the compiler and of its version).
If you use MinGW then you should use the libstdc++-6.dll found into the folder of this compiler. MinGW/bin folder should be the place to search for it on your computer.
If you copy this file in the same directory as your executable, it should be OK.
Simply removing libstdc++-6.dll.a \ libstdc++.dll.a from the mingw directory fixes this.
I tried using the flag -static-libstdc++ but this did not work for me.
I found the solution in: http://ghc.haskell.org/trac/ghc/ticket/4468#
This error also occurred when I compiled with MinGW using gcc with the following options:
-lstdc++ -lm, rather than g++
I did not notice these options, and added: -static-libgcc -static-libstdc++
I still got the error, and finally realized I was using gcc, and changed the compiler to g++ and removed -stdc++ and -lm, and everything linked fine.
(I was using LINK.c rather than LINK.cpp... use make -pn | less to see what everything does!)
I don't know why the previous author was using gcc with -stdc++. I don't see any reason not to use g++ which will link with stdc++ automatically... and as far as I know, provide other benefits (it is the c++ compiler after all).
useful to windows users who use eclipse for c/c++ but run *.exe file and get an error: "missing libstdc++6.dll"
4 ways to solve it
Eclipse ->"Project" -> "Properties" -> "C/C++ Build" -> "Settings" -> "Tool Settings" -> "MinGW C++ Linker" -> "Misscellaneous" -> "Linker flags" (add '-static' to it)
Add '{{the path where your MinGW was installed}}/bin' to current user environment variable - "Path" in Windows, then reboot eclipse, and finally recompile.
Add '{{the path where your MinGW was installed}}/bin' to Windows environment variable - "Path", then reboot eclipse, and finally recompile.
Copy the file "libstdc++-6.dll" to the path where the *.exe file is running, then rerun. (this is not a good way)
Note: the file "libstdc++-6.dll" is in the folder '{{the path where your MinGW was installed}}/bin'
I use Eclipse under Fedora 20 with MinGW for cross compile.
Use these settings and the program won't ask for libstdc++-6.dll any more.
Project type - Cross GCC
Cross Settings
Prefix: x86_64-w64-mingw32-
Path: /usr/bin
Cross GCC Compiler
Command: gcc
All Options:
-I/usr/x86_64-w64-mingw32/sys-root/mingw/include -O3
-Wall -c -fmessage-length=0
Includes: /usr/x86_64-w64-mingw32/sys-root/mingw/include
Cross G++ Compiler
Command: g++
All Options: -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -O3
-Wall -c -fmessage-length=0
Includes: /usr/x86_64-w64-mingw32/sys-root/mingw/include
Cross G++ Linker
Command: g++ -static-libstdc++ -static-libgcc
All Options: -L/usr/x86_64-w64-mingw32/sys-root/mingw/lib -L/usr/x86_64-w64-mingw32/sys-root/mingw/bin
Library search path (-L):
/usr/x86_64-w64-mingw32/sys-root/mingw/lib
/usr/x86_64-w64-mingw32/sys-root/mingw/bin
I just had this issue.. I just added the MinGW\bin directory to the path environment variable, and it solved the issue.
I placed the libstdc++-6.dll file in the same folder where exe file is generated.
You only need to add your "mingw-install-directory"/bin/ to your Path in your System environment variables ... that's it !!
I had same problem. i fixed it. i was using Codeblocks and i save my .cpp file on desktop instead of saving it in Codeblocks file where MinGW is located. So i copied all dll files from MinGW>>bin folder to where my .cpp file was saved.
You can also copy the dll files in the directory of your exe file
I had this problem too. I was compiling in command prompt and used the flag -static.
My command before:
"g++ test.cpp -o test.exe"
and afterwards:
"g++ test.cpp -o test.exe -static"
I had the same problem and I solved it by running the compiled exe as an administrator.
I have been trying to use UnitTest++ for unit testing. I am using Eclipse Mars IDE.
I have followed Project->Properties->C/C++ Build->Tool Settings and included the full path "C:\Users\XXX\workspace\unittest-cpp-master\UnitTest++" in GCC C++ Compiler (Includes option) and "C:\Users\XXX\workspace\unittest-cpp-master\UnitTest++\UnitTest++.h" in MinGW C++ Linker (Libraries option)
When I build my source code, it gives the error
cannot find -lC:\Users\XXX\workspace\unittest-cpp-master\UnitTest++\UnitTest++.h
Any suggestions on how to fix it? TIA
You are seeing a linker error that is telling you the linker can
find no library that corresponds to the commandline linker option:
-lC:\Users\XXX\workspace\unittest-cpp-master\UnitTest++\UnitTest++.h
A library that corresponds to linker option -lfoo will called libfoo.a
or libfoo.so, if you are on a unix-like system, or libfoo.a, foo.lib or foo.dll
if you are on Windows.
Of course none of those possibilities yields the name of any file that exists
on your computer, if you substitute C:\Users\XXX\workspace\unittest-cpp-master\UnitTest++\UnitTest++.h
for foo.
You have made one and perhaps two mistakes:
You have added the name of a header file, C:\Users\XXX\workspace\unittest-cpp-master\UnitTest++\UnitTest++.h,
as a linkage library. A header file means nothing to the linker. A linkage library is a binary file
containing compiled code that the linker can combine with other binaries to make a program. The
library you need to link is UnitTest++. This setting will generate the commandline linker option:
-lUnitTest++
when you build, and the linker will search for a matching library file in the directories
where it's supposed to search for libraries.
By default the linker will search for libraries in several default directories, depending on
your unix-like or Windows system. If you haven't installed your UnitTest++ library in one of
those places then you also need to tell the linker the name of the directory where it should search for this library.
So if, just for example, your UnitTest++ library is:
C:\Users\XXX\workspace\unittest-cpp-master\lib\UnitTest++.a
then you need to make a further setting in the IDE. Navigate to your project's Project's Properties -> C++ Build -> Settings -> GCC C++ Linker -> Libraries -> Library search path,
and add C:\Users\XXX\workspace\unittest-cpp-master\UnitTest++. This setting will generate the
commandline linker option:
-LC:\Users\XXX\workspace\unittest-cpp-master\lib
when you build.
If you use an IDE such a Eclipse to control the GNU build tools without basically understanding how
the commandline tools work and what sorts of files they operate on then I'm afraid you are sure to
commit blunders like this: here is very quick cure for that.
If it leads you astray in working with MinGW GCC, then refer to the MinGW documentation and/or the GCC documentation
I've tried more and more time, but I got the same error.
When I use an external lib, for example I'm try to work on openssl and crypto++, I receive the error: "undefined reference to (function)".
I dunno why Eclipse do that neverthless the #include are all correct.
I've tried even to add the path from Properties-C/C++ General-Path & Symbols but nothing.
Can anybody help me?
You must specify the name of the shared libraries which must be linked to the executable.
Assuming you are using the GNU toolchain, you can do it by following these steps:
Right-click on the project, then select Properties
Go under C/C++ Build -> Settings
Select GCC C Linker -> Libraries
In Libraries (-l), add the name of your libraries,
If needed, put the directory where your libraries are hosted in Library search path (-L).
I have the same problem too. I was using Eclipse CDT and trying to build my source code with OpenSSL headers and I got the same "undefined reference" problem.
To those who may be also suffering from this type of errors, try these steps:
Make sure you use the right compiler(for Ubuntu 18.04)
right click your project->preference->C/C++ Build->tool chain editor->use CDT internal Builder / Linux gcc(you can try to run HelloWorld as a test)
C/C++ Build->settings->gcc linker, see right there is a "+", click and type ssl and crypto
Rebuild your project, done.
I strongly recommend you to learn gcc compiler command line. If you have compile problem, always use the terminal and command line to see if you can compile it successfully, then compare the succeeded command with the console log in Eclipse, at where you can see the actual gcc command that used to compile your code.
A good resource for gcc command: https://www.rapidtables.com/code/linux/gcc/gcc-l.html