Makefile fixes for MacOS. It builds on my machine™ now. :-D

server/Makefile

@@ -25,7 +25,6 @@ CFLAGS+=-std=c14 -fvisibility=hidden
 CXXFLAGS+= -I$(PEP_INCLUDE) -std=c++14 -fvisibility=hidden
 LDFLAGS+=-std=c++14 -L$(PEP_LIB_PATH) -L$(LIBRARY_PATH)
 LDLIBS+= -lpEpEngine -lpEpAdapter -lpEpwebserver -lasn1 \
-	 -lboost_filesystem -lboost_program_options -lboost_system -lboost_thread -lboost_regex \
 	 -lsequoia_openpgp_ffi -lhogweed -lnettle -lgmp \
 	 -lz -lsqlite3
 
@@ -35,14 +34,19 @@ BUILD_FOR=$(BUILD_ON)
 ifeq ($(BUILD_ON),Darwin)
     ifeq ($(BUILD_FOR),Darwin)
         LDLIBS+= -liconv -lobjc -framework Foundation -framework Security
+        LDLIBS+= -lboost_filesystem-mt -lboost_program_options-mt -lboost_system-mt -lboost_thread-mt -lboost_regex-mt
+
         # ASAN is not strictly a MacOS/clang feature, but won't work with musl.
         CXXFLAGS+= -fsanitize=address
+        LDFLAGS+=  -fsanitize=address
     else
         $(error I do not know how to make for $(BUILD_FOR) on $(BUILD_ON))
     endif
 else ifeq ($(BUILD_ON),Linux)
     ifeq ($(BUILD_FOR),Linux)
-        LDLIBS+= -luuid
+        LDLIBS+= -luuid \
+         -lboost_filesystem -lboost_program_options -lboost_system -lboost_thread -lboost_regex
+
     else
         $(error I do not know how to make for $(BUILD_FOR) on $(BUILD_ON))
     endif