@@ -, +, @@ 
 Makefile |   15 ++++++++-------
 1 files changed, 8 insertions(+), 7 deletions(-)
--- a/Makefile	
+++ a/Makefile	
@@ -11,7 +11,8 @@ INSTALL = install
 # APIVERSION is used in soname
 APIVERSION = 1
 #LDFLAGS = -Wl,--no-undefined
-CFLAGS = -O -fPIC -Wall -DENABLE_STRNATPMPERR
+CFLAGS := -O -fPIC -Wall -DENABLE_STRNATPMPERR $(CFLAGS)
+LIBDIR ?= lib
 
 LIBOBJS = natpmp.o getgateway.o
 
@@ -29,11 +30,11 @@ endif
 
 HEADERS = natpmp.h
 
-EXECUTABLES = testgetgateway natpmpc-shared natpmpc-static
+EXECUTABLES = testgetgateway natpmpc-shared
 
 INSTALLPREFIX ?= $(PREFIX)/usr
 INSTALLDIRINC = $(INSTALLPREFIX)/include
-INSTALLDIRLIB = $(INSTALLPREFIX)/lib
+INSTALLDIRLIB = $(INSTALLPREFIX)/$(LIBDIR)
 INSTALLDIRBIN = $(INSTALLPREFIX)/bin
 
 .PHONY:	all clean depend install cleaninstall installpythonmodule
@@ -74,19 +75,19 @@ cleaninstall:
 testgetgateway:	testgetgateway.o getgateway.o
 
 natpmpc-static:	natpmpc.o $(STATICLIB)
-	$(CC) $(LDFLAGS) -o $@ $^
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
 
 natpmpc-shared:	natpmpc.o $(SHAREDLIB)
-	$(CC) $(LDFLAGS) -o $@ $^
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
 
 $(STATICLIB):	$(LIBOBJS)
 	$(AR) crs $@ $?
 
 $(SHAREDLIB):	$(LIBOBJS)
 ifeq ($(OS), Darwin)
-	$(CC) -dynamiclib -Wl,-install_name,$(SONAME) -o $@ $^
+	$(CC) $(LDFLAGS) -dynamiclib -Wl,-install_name,$(SONAME) -o $@ $^
 else
-	$(CC) -shared -Wl,-soname,$(SONAME) -o $@ $^
+	$(CC) $(LDFLAGS) -shared -Wl,-soname,$(SONAME) -o $@ $^
 endif
 
 # DO NOT DELETE