--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,7 @@ VERSION   := $(VER_MAJOR).$(VER_MINOR).$
 MODULES	  := binding auth turn stat status
 MODULES	  += $(EXTRA_MODULES)
 
+ifndef LIBRE_MK
 LIBRE_MK  := $(shell [ -f ../re/mk/re.mk ] && \
 	echo "../re/mk/re.mk")
 ifeq ($(LIBRE_MK),)
@@ -28,19 +29,27 @@ ifeq ($(LIBRE_MK),)
 LIBRE_MK  := $(shell [ -f /usr/local/share/re/re.mk ] && \
 	echo "/usr/local/share/re/re.mk")
 endif
+endif
 
 include $(LIBRE_MK)
 
 # Optional syslog module
+ifndef USE_SYSLOG
 ifneq ($(OS),win32)
+USE_SYSLOG := 1
+endif
+endif
+ifneq ($(USE_SYSLOG),)
 MODULES   += syslog
 endif
 
 # Optional MySQL client module
+ifndef USE_MYSQL
 USE_MYSQL := $(shell [ -f $(SYSROOT)/include/mysql/mysql.h ] || \
 		[ -f $(SYSROOT)/local/include/mysql/mysql.h ] || \
 		[ -f $(SYSROOT_ALT)/include/mysql/mysql.h ] || \
 		[ -f $(SYSROOT_ALT)/include/mysql5/mysql/mysql.h ] && echo "1")
+endif
 ifneq ($(USE_MYSQL),)
 MODULES += mysql_ser
 endif