Attempting to use the static lib with g++ seems to cause issues w/o -fPIC.

boost/Makefile

@@ -20,7 +20,7 @@ impl:
 	mkdir -p target && \
 	CXX=$$(which c++) ./bootstrap.sh --prefix=$$PWD/target/ --with-toolset=clang && \
 	./b2 clean && \
-	./b2 --prefix=$$PWD/target/ toolset=clang cxxflags="-std=c++17 -stdlib=libstdc++" linkflags="-stdlib=libstdc++" --with-program_options \
+	./b2 --prefix=$$PWD/target/ toolset=clang cxxflags="-std=c++17 -stdlib=libstdc++ -fPIC" linkflags="-stdlib=libstdc++" --with-program_options \
 		--with-system \
 		--with-date_time \
 		--with-thread \