moved installation back to /usr/local, added post and postun

Author: Kareem Zidane

Makefile

@@ -97,11 +97,13 @@ rpm: $(LIBS) $(MANS)
 	rm -rf build/rpm
 
 	# temporary fpm source
-	mkdir -p build/rpm/libcs50/usr
-	cp -r $(addprefix build/, include lib src) build/rpm/libcs50/usr
+	mkdir -p build/rpm/libcs50/usr/local
+	cp -r $(addprefix build/, include lib src) build/rpm/libcs50/usr/local
 	mkdir -p build/rpm/libcs50/usr/local/share/man/man3
 	cp -r $(MANS) build/rpm/libcs50/usr/local/share/man/man3
 	fpm \
+	    --after-install post \
+	    --after-remove postun \
 	    --category libs \
 	    --chdir build/rpm/libcs50 \
 	    --description "CS50 library for C" \

post

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+case "$1" in
+    # initial installation or upgrade
+    1|2)
+        ldconfig /usr/local/lib
+    ;;
+esac

postun

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+case "$1" in
+	# uninstallation
+	0)
+		ldconfig /usr/local/lib
+	;;
+
+	# upgrade
+	1)
+	;;
+esac