+HAS_SHADOW=y
+#USE_PAM=y
+
+INCLUDE_DIRS= -I../include
+
+COMPILE_FLAGS= -D_linux_=1 -DHAVE_PATHS_H -DIPX_CHANGE
+
+CFLAGS= $(COPTS) $(COMPILE_FLAGS) $(INCLUDE_DIRS)
+
+ifdef CHAPMS
+CFLAGS += -DCHAPMS=1
+ifndef USE_CRYPT
+LIBS := -ldes $(LIBS)
+else
+CFLAGS += -DUSE_CRYPT=1
+ifneq ($(wildcard /usr/include/crypt.h),)
+CFLAGS += -DHAVE_CRYPT_H=1
+endif
+endif
+PPPDOBJS += md4.o chap_ms.o
+ifdef MSLANMAN
+CFLAGS += -DMSLANMAN=1
+endif
+endif
+
+ifdef HAS_SHADOW
+CFLAGS += -DHAS_SHADOW
+#LIBS := -lshadow $(LIBS)
+endif
+
+# For "Pluggable Authentication Modules", see ftp.redhat.com:/pub/pam/.
+ifdef USE_PAM
+CFLAGS += -DUSE_PAM
+LIBS := -lpam -ldl $(LIBS)
+endif
+
+# Lock library binary for Linux is included in 'linux' subdirectory.
+ifdef LOCKLIB
+LIBS := -llock $(LIBS)
+CFLAGS += -DLOCKLIB=1
+endif