The program can t start because libgcc s dw2-1 dll is missing

Question

I have created a simple program in C   with Code  Blocks   If I run it from Code  Blocks  it works correctly  but if I run it by doubleclicking on the executable file  a window pops up with this message      The program can t start because libgcc s dw2-1 dll is missing from your computer    Try reinstalling the program to fix this problem    So  what is the problem  What do I have to do to fix it

User · Answer

Including -static-libgcc on the compiling line  solves the issue  g   my cpp -o my exe -static-libgcc   According to   hardmath  You can also  create an alias on your profile    profile   if you re on MSYS2 for example  alias g    g   -static-libgcc    Now your GCC command goes thru too  -      Remeber to restart your Terminal

User · Answer

I was able to overcome this by using  gcc  instead of  g    for my compiler   I know this isn t an option for most people  but thought I d mention it as a workaround option

User · Answer

Go to the MinGW http sourceforge net tree   Under Home MinGW Base gcc Version4 or whatever version use are using  gcc-4 version   you ll find a file like gcc-core-4 8 1-4-mingw32-dll tar lzma   Extract it and go into the bin folder where you ll find your libgcc s dw2-1 dll and other dll s   Copy and paste what you need into your bin directory

User · Answer

Add  -static  to other linker options solves this problem   I was just having the same issue after I tested this on another system  but not on my own  so even if you haven t noticed this on your development system  you should check that you have this set if you re statically linking   Another note  copying the DLL into the same folder as the executable is not a solution as it defeats the idea of statically linking   Another option is to use the TDM version of MinGW which solves this problem   Update edit  this may not solve the problem for everyone   Another reason I recently discovered for this is when you use a library compiled by someone else  in my case it was SFML which was improperly compiled and so required a DLL that did not exist as it was compiled with a different version of MinGW than what I use   I use a dwarf build  this used another one  so I didn t have the DLL anywhere and of course  I didn t want it as it was a static build   The solution may be to find another build of the library  or build it yourself

User · Answer

I believe this is a MinGW gcc compiler issue  rather than a Microsoft Visual Studio setup   The libgcc s dw2-1 dll should be in the compiler s bin directory   You can add this directory to your PATH environment variable for runtime linking  or you can avoid the problem by adding  -static-libgcc -static-libstdc    to your compiler flags   If you plan to distribute the executable  the latter probably makes the most sense   If you only plan to run it on your own machine  the changing the PATH environment variable is an attractive option  keeps down the size of the executable    Updated   Based on feedback from Greg Treleaven  see comments below   I m adding links to     Screenshot of Code  Blocks  Project build options      GNU gcc link options   The latter discussion includes -static-libgcc and -static-libstdc   linker options

User · Answer

In CodeBlocks you can go to Settings   Compiler    and choose either 1  the two items in the blue box or  2  the one item in the green box

User · Answer

See also  It solved my problem   By the way  is it definitely compiler flag  Maybe linker is the more suitable term here

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Can t you put it in system32 or something like you do with others dll files  so that every program you try to run won t have that problem on your machine   I just need the path where to put it   It is kinda annoying to put it in the directory every time I run a program I just built     Edit  I found the solution      Extract libgcc s dw2-1 dll to a location on your computer  We   recommend you to unzip it to the directory of the program that is   requesting libgcc s dw2-1 dll       If that doesn t work  you will have to extract libgcc s dw2-1 dll to   your system directory  By default  this is          C  Windows System  Windows 95 98 Me      C  WINNT System32  Windows NT 2000      C  Windows System32  Windows XP  Vista  7            If you use a 64-bit version of Windows  you should also place   libgcc s dw2-1 dll in C  Windows SysWOW64       Make sure overwrite any existing files  but make a backup copy of the   original file   Reboot your computer       If the problem still occurs  try the following          Open Windows Start menu and select  Run        Type CMD and press Enter  or if you use Windows ME  type COMMAND      Type regsvr32 libgcc s dw2-1 dll and press Enter

User · Answer

If you are wondering where you can download the shared library  although this will not work on your client s devices unless you include the dll  here is the link  https   de osdn net projects mingw downloads 72215 libgcc-9 2 0-1-mingw32-dll-1 tar xz

User · Answer

In Eclipse  you will find it under the project properties   C C   Build   Settings   MinGW C   Linker   Misc  You must add it to the  linker flags  at the top  nowhere else  Then just rebuild     I have found that linking those statically explodes the size up to 1 400kb even with optimizations  It s 277kb larger compared to just copying over the shared DLLs  It s 388kb larger as well after UPXing everything  Very lose lose here  Just include the DLLs as the end-user can decide to delete them or not if they have them installed elsewhere

User · Answer

Copy  libgcc s dw2-1 dll  to were make exe is    If you are using Msys  copy it to  msys bin  Make sure that the path to make exe is set in the env  PATH   if make exe is in a folder  bin   most likely  and you have msys  it s  msys bin  Compile  rund  debug  etc  happy

User · Answer

Just go to Settings  Compiler and Debugger  then click the Linker Settings tab and go over to the  Other linker options  edit control and paste   -static-libgcc -static-libstdc    to it  there is no compiler flag option in the Compiler Flags options for Code  Blocks so that s the way to solve that problem  I came here looking for a solution also and the one guy that posted about  -static-libgcc -static-libstdc    gave the right idea  and I sort of figured the rest out by accident but it worked  the file is clickable now from outside Code  Blocks  works right from the desktop

User · Answer

Code  Blocks  add  -static  in settings- compiler- Linker settings- Other linker options

User · Answer

Find that dll on your PC  and copy it into the same directory your executable is in

User · Answer

Add path to that dll into PATH environment variable

User · Answer

Working with msys2 I have obtained the same error trying to execute release version of my project in a debug environment  The solution for my problem is obvious  use executable with debug symbols

[c++] The program can't start because libgcc_s_dw2-1.dll is missing

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