I've searched on google for some references to interfacing cygwin with win32
dll's. I've made a little progress but am kind of stuck creating DLL's
inside cygwin. The method I am using is the following:
/* foo.c */
#include <windows.h>
int WINAPI foobar() { return 1234; }
gcc -mno-cygwin foo.c -c
gcc -Wl,--out-implib,libfoo.import.a -mno-cygwin -shared -o foo.dll foo.o
When I look at the DLL file with MSVC's "depends.exe" I see the symbol is
"foobar@0" -- and I guess the @0 refers to how many bytes the function args
take (I get @4 with a pointer to double, etc.). The only way I can make the
symbols available to excel's visual basic interface is to cheat and hexedit
foo.dll to change "foobar@0" to "foobarX0". Then I can put a few lines in my
excel modules like
Declare Function foobarX0 Lib "e:\dlltest\foo.dll" () As Integer
Function MattVersion()
Dim i As Integer
i = foobarX0()
MattVersion = "MW 0.0.1.0.1." + Str(i)
End Function
Surely there is a better way. Can anyone suggest a better technique?
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