--- ./Makefile.orig	2012-01-25 20:40:01.000000000 +0100
+++ ./Makefile	2014-08-22 10:44:57.000000000 +0200
@@ -16,11 +16,11 @@
 ASTERISK_SRC_DIR =
 
 # asterisk release or subversion working copy
-ASTERISK_SRC_VERSION = $(shell if [ -e $(ASTERISK_SRC_DIR)/.version ] ; then echo release; elif [ -e $(ASTERISK_SRC_DIR)/.svn ] ; then echo subversion; else echo unknown; fi)
+ASTERISK_SRC_VERSION = release
 
 # asterisk release version or subversion branch
 ifeq ($(ASTERISK_SRC_VERSION),release)
- ASTERISK = $(shell cat $(ASTERISK_SRC_DIR)/.version | cut -d "." -f1,2 | sed -e 's/\.//')
+ ASTERISK = 18
 else
  ifeq ($(ASTERISK_SRC_VERSION),subversion)
   ASTERISK = $(shell svn info $(ASTERISK_SRC_DIR) | grep URL | sed -e 's:^.*/::' | cut -d "." -f 1,2 | sed -e 's/\.//')
@@ -31,10 +31,10 @@
 endif
 
 # asterisk include directory
-ASTERISK_INCLUDE_DIR = $(ASTERISK_SRC_DIR)/include
+ASTERISK_INCLUDE_DIR = ${LOCALBASE}/include
 
 # asterisk module directory
-INSTALL_MODULES_DIR = /usr/lib/asterisk/modules
+INSTALL_MODULES_DIR = ${LOCALBASE}/lib/asterisk/modules
 
 # module release
 RELEASE = 2.1
@@ -86,7 +86,7 @@
 # compiler flags
 #
 
-CFLAGS = -pipe -Wall -Wmissing-prototypes -Wmissing-declarations -MD -MP $(DEBUG)
+CFLAGS += -pipe -Wall -Wmissing-prototypes -Wmissing-declarations -MD -MP $(DEBUG)
 #CFLAGS += -O3 -march=pentium3 -msse -mfpmath=sse,387 -ffast-math
 # PERF: below is 10% faster than -O2 or -O3 alone.
 #CFLAGS += -O3 -ffast-math -funroll-loops
@@ -103,7 +103,7 @@
 # preprocessor flags
 #
 
-CPPFLAGS = $(INCLUDE) -D_REENTRANT -D_GNU_SOURCE
+CPPFLAGS += $(INCLUDE) -D_REENTRANT -D_GNU_SOURCE
 CPPFLAGS += -DRELEASE=\"$(RELEASE)\"
 CPPFLAGS += -DASTERISK=$(ASTERISK)
 CPPFLAGS += -DCHANNEL_TABLE_SIZE=$(CHANNEL_TABLE_SIZE)
@@ -182,7 +182,8 @@
 $(OBJS): $(INCS)
 
 $(TARGET): $(OBJS)
-	$(CC) $(SOLINK) -o $@ $(OBJS)
+	$(CC) $(LDFLAGS) $(SOLINK) -o $@ $(OBJS)
 
 install:
-	$(INSTALL) -m 755 $(TARGET) $(INSTALL_MODULES_DIR)
+	mkdir -p $(DESTDIR)$(INSTALL_MODULES_DIR)
+	$(INSTALL) -m 755 $(TARGET) $(DESTDIR)$(INSTALL_MODULES_DIR)