# HG changeset patch
# User Guido Berhoerster <guido+pwm@berhoerster.name>
# Date 1505944671 -7200
# Node ID 616385fa1fd9e19a76f07f6734e3bbd5d0ca5c99
# Parent  eb5ce870eb162581a6d26c74cdd044450f3e91a2
Build common functions as a library that can be reused

diff -r eb5ce870eb16 -r 616385fa1fd9 Makefile
--- a/Makefile	Wed Sep 20 23:49:31 2017 +0200
+++ b/Makefile	Wed Sep 20 23:57:51 2017 +0200
@@ -145,6 +145,10 @@
 LIBCOMPAT_LIB =		compat/libcompat.a
 LIBCOMPAT_LIB_MEMBERS =	$(LIBCOMPAT_OBJS:%.o=$(LIBCOMPAT_LIB)(%.o))
 
+LIBPWM_OBJS =		util.o
+LIBPWM_LIB =		libpwm.a
+LIBPWM_LIB_MEMBERS =	$(LIBPWM_OBJS:%.o=$(LIBPWM_LIB)(%.o))
+
 PWM_OBJS =		cmd.o \
 			io.o \
 			pager.o \
@@ -152,11 +156,10 @@
 			pw.o \
 			pwfile.o \
 			pwm.o \
-			tok.o \
-			util.o
+			tok.o
 PWM_BIN =		$(PACKAGE)
 
-OBJS = $(LIBCOMPAT_OBJS) $(PWM_OBJS)
+OBJS = $(LIBCOMPAT_OBJS) $(LIBPWM_OBJS) $(PWM_OBJS)
 
 MANPAGES = pwm.1
 
@@ -176,12 +179,12 @@
 endif
 ifeq ($(HAVE_ARC4RANDOM),1)
   XCPPFLAGS +=		-DHAVE_ARC4RANDOM
-  PWM_OBJS +=		rand-arc4random.o
+  LIBPWM_OBJS +=	rand-arc4random.o
 else ifeq ($(HAVE_GETRANDOM),1)
   XCPPFLAGS +=		-DHAVE_GETRANDOM
-  PWM_OBJS +=		rand-getrandom.o
+  LIBPWM_OBJS +=	rand-getrandom.o
 else
-  PWM_OBJS +=		rand-dev-random.o
+  LIBPWM_OBJS +=	rand-dev-random.o
 endif
 ifeq ($(HAVE_CLOSEFROM),1)
   XCPPFLAGS +=		-DHAVE_CLOSEFROM
@@ -218,7 +221,9 @@
 
 $(LIBCOMPAT_LIB): $(LIBCOMPAT_LIB_MEMBERS)
 
-$(PWM_BIN): $(PWM_OBJS) $(LIBCOMPAT_LIB)
+$(LIBPWM_LIB): $(LIBPWM_LIB_MEMBERS)
+
+$(PWM_BIN): $(PWM_OBJS) $(LIBPWM_LIB) $(LIBCOMPAT_LIB)
 	$(LINK.o) $^ $(LDLIBS) -o $@
 
 $(eval $(call generate-manpage-rule,$(MANPAGES)))
@@ -244,7 +249,7 @@
 	done
 
 clean:
-	rm -f $(LIBCOMPAT_LIB) $(PWM_BIN) $(OBJS) $(MANPAGES)
+	rm -f $(LIBCOMPAT_LIB) $(LIBPWM_LIB) $(PWM_BIN) $(OBJS) $(MANPAGES)
 
 clobber: clean
 	rm -f $(patsubst %.o,%.d,$(OBJS))