https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79867
--- Comment #1 from Daniel Santos <daniel.santos at pobox dot com> --- Minor correction: LD_LIBRARY_PATH is used to resolve lib names when dlopen() is called, but not for load-time linking. There are also a few other complications on Cygwin. DLLs (including libgcc) are stored in /usr/bin and not /usr/lib. Windows searches the PATH to find dlls, and you can't remove /usr/bin from the PATH and have anything work. So any type of real solution will likely require Cygwin to change the install location of gcc's libs, otherwise there is no assurance that we've loaded the correct library (should something be amiss in the build tree). Finally, there is no ldconfig on Cygwin at this time.
