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From: Tobias Burnus on 31 Mar 2010 08:47
On 03/30/2010 12:53 PM, Pedro567 wrote:
> We are having a problem to match properly a C struct exported as dll
> using GNU g++ 4.4.0 with
> a COMMON block in Fortran using GNU gfortran 4.4.0. Tt works properly
> in Linux version, but not with
> Mingw. Probably we are missing something in this platform. Any help
> will be welcomme.

I ask Kai Tietz, who is MinGW64 expert, and he said that you are missing
a __declspec(dllexport) for "extern":

> Code in C++ (compiled as a dll):
> extern "C"
> {
> extern struct {

As better? alternative he suggest to use the linker option
--enable-runtime-pseudo-reloc-v2 (as pass-on option for the compiler:
-Wl,--enable-runtime-pseudo-reloc-v2); however, that requires a rather
new MinGW runtime and binutils.

Tobias
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