diff --git a/Include.make b/Include.make
index 3f85e61..c34ba28 100644
--- a/Include.make
+++ b/Include.make
@@ -1,7 +1,5 @@
-CC              := gcc
 INSTALL         := install
 SBINDIR         := /sbin
 USRSBINDIR      := /usr/sbin
 USRLIBDIR       := /usr/lib
 MAN8            := /usr/share/man/man8
-CFLAGS          := -Wall -O2
diff --git a/kernel_test/Makefile b/kernel_test/Makefile
index 2559b4b..ef599a2 100644
--- a/kernel_test/Makefile
+++ b/kernel_test/Makefile
@@ -10,16 +10,14 @@ all: $(ALL_FILES)
 
 $(ALL_FILES): include.h
 
-CC=gcc
-
-CFLAGS=-Wall -O2
+CFLAGS += -Wall -O2
 
 #
 # Tools for kernel testing.
 #
 
 .c:
-	$(CC) $(CFLAGS) -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
 
 #
 # Delete all test programs.
diff --git a/sbin/Makefile b/sbin/Makefile
index 0f53bc6..0e8e42e 100644
--- a/sbin/Makefile
+++ b/sbin/Makefile
@@ -9,7 +9,7 @@ install: all
 	$(INSTALL) -m 0700 $(BUILD_FILES) $(INSTALLDIR)$(SBINDIR)
 
 .c:
-	$(CC) $(CFLAGS) -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
 
 clean:
 	rm -f -- $(BUILD_FILES)
diff --git a/usr_lib_tomoyo/Makefile b/usr_lib_tomoyo/Makefile
index 94020ee..f20ae40 100644
--- a/usr_lib_tomoyo/Makefile
+++ b/usr_lib_tomoyo/Makefile
@@ -11,7 +11,7 @@ install: all
 	$(INSTALL) -m 0644 ../README.tomoyo ../COPYING.tomoyo $(INSTALLDIR)/$(USRLIBDIR)/tomoyo/
 
 .c:
-	$(CC) $(CFLAGS) -o $@ $<
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
 
 clean:
 	rm -f -- $(BUILD_FILES)
diff --git a/usr_sbin/Makefile b/usr_sbin/Makefile
index fa715b0..5b991db 100644
--- a/usr_sbin/Makefile
+++ b/usr_sbin/Makefile
@@ -15,17 +15,17 @@ $(BUILD_FILES): libtomoyotools.so
 	sleep 10
 
 libtomoyotools.so: tomoyotools.c tomoyotools.h
-	$(CC) $(CFLAGS) -fPIC tomoyotools.c -shared -Wl,-soname,libtomoyotools.so.3 -o libtomoyotools.so.3.0.1
+	$(CC) $(CFLAGS) $(LDFLAGS) -fPIC tomoyotools.c -shared -Wl,-soname,libtomoyotools.so.3 -o libtomoyotools.so.3.0.1
 	ln -sf libtomoyotools.so.3.0.1 libtomoyotools.so
 
 .c:
-	$(CC) $(CFLAGS) -o $@ $< -ltomoyotools -L. 
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -ltomoyotools -L. 
 
 tomoyo-editpolicy: tomoyotools.h editpolicy*.c readline.h /usr/include/curses.h libtomoyotools.so
-	$(CC) $(CFLAGS) -o tomoyo-editpolicy editpolicy*.c -lncurses -ltomoyotools -L. -DCOLOR_ON
+	$(CC) $(CFLAGS) $(LDFLAGS) -o tomoyo-editpolicy editpolicy*.c -lncurses -ltomoyotools -L. -DCOLOR_ON
 
 tomoyo-queryd: tomoyotools.h tomoyo-queryd.c readline.h /usr/include/curses.h libtomoyotools.so
-	$(CC) $(CFLAGS) -o tomoyo-queryd tomoyo-queryd.c -lncurses -ltomoyotools -L.
+	$(CC) $(CFLAGS) $(LDFLAGS) -o tomoyo-queryd tomoyo-queryd.c -lncurses -ltomoyotools -L.
 
 install: all
 	mkdir -p -m 0755 $(INSTALLDIR)$(USRLIBDIR)