diff --git a/Makefile b/Makefile
index 39fa4d5..c5c262e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,10 @@
 # This makefile supports different OS and CPU setups.
 # You should use it this way :
 #   make TARGET=os CPU=cpu REGEX=lib
-
+#
+# Some external components may be build with it, such dlmalloc :
+#
+#   make DLMALLOC_SRC=/usr/local/src/dlmalloc.c
 
 # Select target OS. TARGET must match a system for which COPTS and LIBS are
 # correctly defined below.
@@ -180,6 +183,12 @@ ifneq ($(USE_REGPARM),)
 OPTIONS += -DCONFIG_HAP_USE_REGPARM
 endif
 
+ifneq ($(DLMALLOC_SRC),)
+# May be changed to patch PAGE_SIZE on every platform
+DLMALLOC_THRES=4096
+OPT_OBJS += src/dlmalloc.o
+endif
+
 ifneq ($(VERSION),)
 OPTIONS += -DCONFIG_HAPROXY_VERSION=\"$(VERSION)$(SUBVERS)\"
 endif
@@ -228,6 +237,9 @@ objsize: haproxy
 %.o:	%.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 
+src/dlmalloc.o: $(DLMALLOC_SRC)
+	$(CC) $(CFLAGS) -DDEFAULT_MMAP_THRESHOLD=$(DLMALLOC_THRES) -c -o $@ $<
+
 clean:
 	rm -f *.[oas] src/*.[oas] core haproxy test
 	for dir in . src include/* doc; do rm -f $$dir/*~ $$dir/*.rej;done
diff --git a/Makefile.bsd b/Makefile.bsd
index 14e70f4..025bc45 100644
--- a/Makefile.bsd
+++ b/Makefile.bsd
@@ -1,6 +1,11 @@
 # This makefile is dedicated to OpenBSD (and possibly other BSDs)
 # You should use it this way :
 #   make TARGET=os CPU=cpu
+#
+# Some optional components may be added, such as DLMALLOC :
+#
+#   make TARGET=freebsd CPU=i686 DLMALLOC_SRC=/usr/local/src/dlmalloc.c \
+#        OPT_OBJS=src/dlmalloc.o
 
 VERSION := 1.3.12
 
@@ -66,11 +71,17 @@ SMALL_OPTS = -DBUFSIZE=8030 -DMAXREWRITE=1030 -DSYSTEM_MAXCONN=1024
 ADDINC =
 ADDLIB =
 
+# redefine this if you want to add some special .o files
+OPT_OBJS =
+
 # set some defines when needed.
 # Known ones are -DENABLE_POLL
 # - use -DTPROXY to compile with transparent proxy support.
 DEFINE = -DTPROXY
 
+# May be changed to patch PAGE_SIZE on every platform when using dlmalloc
+DLMALLOC_THRES=4096
+
 # global options
 TARGET_OPTS=$(COPTS.$(TARGET))
 REGEX_OPTS=$(COPTS.$(REGEX))
@@ -92,7 +103,7 @@ OBJS = src/haproxy.o src/list.o src/chtbl.o src/hashpjw.o src/base64.o \
 
 all: haproxy
 
-haproxy: $(OBJS)
+haproxy: $(OBJS) $(OPT_OBJS)
 	$(LD) $(LDFLAGS) -o $@ $> $(LIBS)
 
 .SUFFIXES: .c.o
@@ -100,6 +111,9 @@ haproxy: $(OBJS)
 .c.o:
 	$(CC) $(CFLAGS) -c -o $@ $>
 
+src/dlmalloc.o: $(DLMALLOC_SRC)
+	$(CC) $(CFLAGS) -DDEFAULT_MMAP_THRESHOLD=$(DLMALLOC_THRES) -c -o $@ $>
+
 clean:
 	rm -f *.[oas] src/*.[oas] core haproxy test
 	for dir in . src include/* doc; do rm -f $$dir/*~ $$dir/*.rej;done
diff --git a/Makefile.osx b/Makefile.osx
index 0a2aa74..f588478 100644
--- a/Makefile.osx
+++ b/Makefile.osx
@@ -1,6 +1,11 @@
 # This makefile is dedicated to darwin (and possibly other BSDs)
 # You should use it this way :
 #   make TARGET=os CPU=cpu
+#
+# Some optional components may be added, such as DLMALLOC :
+#
+#   make DLMALLOC_SRC=/usr/local/src/dlmalloc.c \
+#        OPT_OBJS=src/dlmalloc.o
 
 VERSION := 1.3.12
 
@@ -71,6 +76,9 @@ ADDLIB =
 # - use -DTPROXY to compile with transparent proxy support.
 DEFINE = -DTPROXY 
 
+# May be changed to patch PAGE_SIZE on every platform when using dlmalloc
+DLMALLOC_THRES=4096
+
 # global options
 TARGET_OPTS=$(COPTS.$(TARGET))
 REGEX_OPTS=$(COPTS.$(REGEX))
@@ -100,6 +108,9 @@ haproxy: $(OBJS)
 .c.o:
 	$(CC) $(CFLAGS) -c -o $@ $<
 
+src/dlmalloc.o: $(DLMALLOC_SRC)
+	$(CC) $(CFLAGS) -DDEFAULT_MMAP_THRESHOLD=$(DLMALLOC_THRES) -c -o $@ $<
+
 clean:
 	rm -f *.[oas] src/*.[oas] core haproxy test
 	for dir in . src include/* doc; do rm -f $$dir/*~ $$dir/*.rej;done