Hello all, Thanks for all the hard work. I am building the rtest.c example, and I encountered a linking error. Perhaps the error is mine, but the makefile did not seem to be able to find graphapp.dll. C:\R-2.8.0\R-2.8.0\src\gnuwin32\front-ends>make -f make.rtest gcc -std=gnu99 -Wall -O2 -pedantic -I.. -I../../include -I../../extra -c rtest.c -o rtest.o gcc -std=gnu99 -Wl,--stack=0xA00000 -s -o Rtest.exe rtest.o -L../../../bin -lR -lgraphapp c:/rtools/mingw/bin/../lib/gcc/mingw32/4.2.1-sjlj/../../../../mingw32/bin/ld .exe: cannot find -lgraphapp collect2: ld returned 1 exit status make: *** [Rtest.exe] Error 1 Changing the relevant line of make.rtest to $(CC) $(LINKFLAGS) -o $@ rtest.o -L../../../bin -lR -lRgraphapp resolved the issue. I searched and could not find any reference to this problem on the lists. Cheers, Ian Fellows