Hello DX's,

Thanks to all those who helped, specifically David Thompson who provided the magic linker switch that created the correct symbol, I now have a loadable version of the FancyRibbon module that "dx on OSX" actually loads!

For anyone who is interested, below I have included the makefile that I cobbled together. It may not be pretty, but it should allow you to build a loadable module on your Mac. It is different from the example makefiles included with dx in a couple of ways that I though I should mention, in case anyone else is interested.

-bundle : A bundle is Apple's name for a dynamically loaded piece of code, among other things. Loadable DX modules are built for OS X as bundles.  -flat_namespace is a bundle option.

-Wl,-iDXEntry:_DXEntry : This is the switch that creates the correct symbol in the module that DX is looking for.

-bundle_loader $(BASE)/bin_macos/dxexec :  This switch tells gcc that dxexec is the executable that will be dynamically loading the code you are compiling.  This allows gcc to treat dxexec as if it were a shared library for the purposes of resolving library functions. Most of the other makefiles that I have seen for building bundles use "-undefined suppress" instead. This causes the compiler to ignore ALL unresolved externals. Depending on how many non-DX related libraries you are using, -bundle_loader may be a better switch to use.

In the example makefiles, the last step is to call the linker, ld, directly. Under OS X, it is cleaner to call gcc again and let it call ld. Specifically it gets around the need to link to the /usr/lib/bundle1.o object file manually. All of this is handled automatically.

Cheers and thanks again for all the help,
Norm

********** Makefile *********

BASE = /Applications/OpenDX/OpenDX.app/Contents/dx
DXARCH = macos

DXCC = gcc
INCLUDES = -I$(BASE)/include
DXCFLAGS = -no-cpp-precomp -dynamic -Wall -fno-common -fPIC

CHECK   = -bundle_loader $(BASE)/bin_macos/dxexec
LDFLAGS = -bundle -flat_namespace $(CHECK) -Wl,-iDXEntry:_DXEntry -e DXEntry
LIBS    = -L$(BASE)/lib_macos -lm

FancyRibbon:	FancyRibbon.c userFancyRibbon.c
	$(DXCC) $(INCLUDES) $(DXCFLAGS) -c FancyRibbon.c
	$(DXCC) $(INCLUDES) $(DXCFLAGS) -c userFancyRibbon.c
	$(DXCC) $(LDFLAGS) $(LIBS) FancyRibbon.o userFancyRibbon.o -o FancyRibbon

userFancyRibbon.c:	FancyRibbon.mdf
			$(BASE)/bin/mdf2c -m FancyRibbon.mdf > userFancyRibbon.c