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You may if you prefer use Visual C++ to make the DLLs (unless they use
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You may if you prefer use Visual C++ to make the DLLs (unless they use
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Fortran source!). The notes here were tested with VC++6.
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Fortran source!). The notes here were tested with VC++6.
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First build the import library Rdll.lib by
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First build the import library Rdll.lib by (from the sources)
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	make R.exp
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	make R.exp
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	lib /def:R.exp /out:Rdll.lib
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	lib /def:R.exp /out:Rdll.lib
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or, depending on your version of VC++
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or, depending on your version of VC++
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	link /lib /def:R.exp /machine:x86 /out:Rdll.lib
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	link /lib /def:R.exp /machine:x86 /out:Rdll.lib
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(Another, less reliable, way to make R.exp is to use pexports.exe from
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Another way to make R.exp is to use pexports.exe from mingw-utils,
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mingw-utils.)
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e.g. pexports R.dll > R.exp.
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Then you can compile the objects and build the DLL by
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Then you can compile the objects and build the DLL by
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	cl /MT /Ox /D "WIN32"  /c *.c
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	cl /MT /Ox /D "WIN32"  /c *.c
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	link /dll /def:mypkg.def /out:mypkg.dll *.obj Rdll.lib
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	link /dll /def:mypkg.def /out:mypkg.dll *.obj Rdll.lib