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b6590b7f83
The LinkDemo program calls dlopen/dlsym/dlclose to try and load a dyanmic library from /usr/lib. It read a global variable and calls a global function (extern "C" of course :) ). There a few hacks left in the LinkLib dynamic library, however. In order to get the linker to stop complaining, we have to use -nostartfiles -ffreestanding otherwise it will link crt0.o to our shared object, which is definitely not right as the _init function for a main program (that calls main) is not suitable for our lib
21 lines
501 B
Makefile
21 lines
501 B
Makefile
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include ../../../Makefile.common
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DYNLIBRARY = libDynamicLib.so
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.PHONY: clean all
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all: $(DYNLIBRARY)
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DynamicLib.o: DynamicLib.cpp
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$(CXX) -DDEBUG -fPIC -isystem../../../ -o $@ -c $<
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# FIXME: Why do I need -nostartfiles and -nofreestanding?
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# GCC isn't smart enough to not link crt0 against this dynamic lib
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# which is clearly wrong. Isn't it? We don't want _start...
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$(DYNLIBRARY): DynamicLib.o
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$(CXX) -shared -nostartfiles -ffreestanding -o $(DYNLIBRARY) $<
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clean:
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rm -f *.o *.d *.so
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