--- Makefile.orig	2016-01-05 16:43:05 UTC
+++ Makefile
@@ -13,7 +13,7 @@
 #
 
 # asterisk source directory
-ASTERISK_SRC_DIR =
+ASTERISK_SRC_DIR = ${LOCALBASE}
 
 ifndef	ASTERISK_SRC_DIR
   $(warning Asterisk source directory is not set)
@@ -21,7 +21,7 @@ ifndef	ASTERISK_SRC_DIR
 endif
 
 # asterisk version
-ASTERISK_SRC_VERSION = $(shell if [ -e $(ASTERISK_SRC_DIR)/.version ] ; then cat $(ASTERISK_SRC_DIR)/.version | awk -F. '{printf "%01d%02d",$$1,$$2}' ; fi)
+ASTERISK_SRC_VERSION = 18
 
 ifeq	($(ASTERISK_SRC_VERSION),)
   $(warning Asterisk version is not set)
@@ -32,7 +32,7 @@ endif
 ASTERISK_INCLUDE_DIR = $(ASTERISK_SRC_DIR)/include
 
 # asterisk module directory
-INSTALL_MODULES_DIR = /usr/lib/asterisk/modules
+INSTALL_MODULES_DIR = ${PREFIX}/lib/asterisk/modules
 
 # module release
 RELEASE = 2.7
@@ -84,12 +84,12 @@ INCLUDE = -I$(ASTERISK_INCLUDE_DIR)
 # 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
 # below is another 5% faster or so.
-CFLAGS += -O3 -ffast-math -funroll-all-loops -fsingle-precision-constant
+#CFLAGS += -O3 -ffast-math -funroll-all-loops -fsingle-precision-constant
 #CFLAGS += -mcpu=7450 -faltivec -mabi=altivec -mdynamic-no-pic
 # adding -msse -mfpmath=sse has little effect.
 #CFLAGS += -O3 -msse -mfpmath=sse
@@ -102,7 +102,7 @@ CFLAGS += -fPIC
 # preprocessor flags
 #
 
-CPPFLAGS = $(INCLUDE) -D_REENTRANT -D_GNU_SOURCE
+CPPFLAGS += $(INCLUDE) -D_REENTRANT -D_GNU_SOURCE
 CPPFLAGS += -DRELEASE=\"$(RELEASE)\"
 CPPFLAGS += -DASTERISK_SRC_VERSION=$(ASTERISK_SRC_VERSION)
 CPPFLAGS += -DCHANNEL_TABLE_SIZE=$(CHANNEL_TABLE_SIZE)
@@ -127,7 +127,7 @@ CPPFLAGS += -DAC_USE_ULAW
 #
 # Uncomment this if you want to use *bsd kqueue for timing
 #
-# CPPFLAGS += -DKQUEUE
+CPPFLAGS += -DKQUEUE
 #
 
 #
@@ -207,7 +207,8 @@ clean:
 $(OBJS): $(INCS)
 
 $(TARGET): $(OBJS)
-	$(CC) $(SOLINK) -o $@ $(OBJS)
+	$(CC) $(LDFLAGS) $(SOLINK) -o $@ $(OBJS)
 
 install:
-	if [ -f $(TARGET) ]; then $(INSTALL) -m 755 $(TARGET) $(INSTALL_MODULES_DIR); fi
+	mkdir -p $(DESTDIR)$(INSTALL_MODULES_DIR)
+	${BSD_INSTALL_LIB} $(TARGET) $(DESTDIR)$(INSTALL_MODULES_DIR)