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How to search for cygwin dll in gcc?


Asked by Aurelia Leal on Dec 01, 2021 FAQ



In the case of cygwin, the standard gcc spec file includes -dll-search-prefix=cyg, so in effect we actually search for cygxxx.dll. NOTE: If you have ever built Boost with MinGW, you probably recall that the naming of Boost libraries exactly obeys the pattern described in the link above.
Also,
This error message means that Windows isn't able to find "cygwin1.dll". The Programs that the Cygwin gcc create depend on this DLL. The file is part of cygwin , so most likely it's located in C:\cygwin\bin.
In addition, Just open a Command Prompt (in Windows), navigate to the folder where the Cygwin installer is located, and run the following command: C:[&cygwin64&]>setup-x86_64.exe -q -P wget -P gcc-g++ -P make -P diffutils -P libmpfr-devel -P libgmp-devel -P libmpc-devel A window will pop up and download all the required packages along with their dependencies.
Additionally,
Linking against the .lib file in Cygwin or MinGW is possible. Example: This links against Shlwapi.lib. (The library must be in the local directory or in the library path of the linker.) Linking against import libraries of DLLs works the same way. Note 1: Keep in mind the different ABIs and name mangeling.
Likewise,
Cygwin DLLs use the cyg prefix to differentiate them from native-Windows MinGW DLLs, see the MinGW website for more details. $ {old_libs} are all your object files, bundled together in static libs or single object files and the $ {dependency_libs} are import libs you need to link against, e.g '-lpng -lz -L/usr/local/special -lmyspeciallib' .