Mirko Vukovic wrote: > But on cygwin, ld does not have the -h option, and following the > suggested command thus: > ld -shared -s -o libgsl.so -whole-archive libgsl.a > gives a long listing of undefined references. And of course, no .so > library at the end of the exercise. I would take that entire page with a huge grain of salt. Anyone that advocates the practice of putting non-PIC objects into a shared library needs their head examined. Also, directly invoking ld to link is almost always a bad idea. The proper way is to rebuild the library. Forget this conversion nonsense. With most things that use standard tools it's simply a matter of using --enable-shared when configuring. Cygwin is similar to linux here, each .c file gets compiled to an .o and then linked to a .dll with "gcc -shared". There is no 'ld' invocation anywhere. Note that calling a DLL a .so is possible but it doesn't make much sense, it's not anything close to the same as a ELF .so. Also note that Cygwin (really, PE) does not have a notion of PIC, however it does have a notion of dllimport/dllexport and often times this means that code that will be made into a DLL must be compiled with different options than code in a static library, just as on ELF you must recompile with -fPIC. Brian
