ensure we can make on debian or redhat

Makefile

@@ -1,14 +1,25 @@
+# Define the Red Hat paths
+APACHE_INCLUDES := -I/usr/include/httpd/
+APR_INCLUDES := -I/usr/include/apr-1/
+
+# Check for Debian/Ubuntu paths
+ifneq (, $(shell test -d /usr/include/apache2 && echo "true"))
+    APACHE_INCLUDES := -I/usr/include/apache2
+    APR_INCLUDES := -I/usr/include/apr-1.0/
+endif
+
+CPPFLAGS := $(APACHE_INCLUDES) $(APR_INCLUDES) -fPIC
 
 all: mod_vhost_limit.so
 
 shm.o : shm.cpp
-	g++ -c -I/usr/include/httpd/ -I/usr/include/apr-1/ -fPIC shm.cpp
+	g++ -c $(CPPFLAGS) -fPIC shm.cpp
 
 mod_vhost_limit.o : mod_vhost_limit.cpp
-	g++ -c -I/usr/include/httpd/ -I/usr/include/apr-1/ -fPIC mod_vhost_limit.cpp
+	g++ -c $(CPPFLAGS) -fPIC mod_vhost_limit.cpp
 
 mod_vhost_limit.so : mod_vhost_limit.o shm.o
-	g++ -shared -o mod_vhost_limit.so mod_vhost_limit.o shm.o 
+	g++ -shared -o mod_vhost_limit.so mod_vhost_limit.o shm.o
 
 clean:
 	rm -rf mod_vhost_limit.o mod_vhost_limit.so shm.o

README.md

@@ -41,14 +41,26 @@ total 72
  4 -rw-r--r-- 1 root root  3368 Aug 14 10:41 shm.o
 ```
 
-mod_vhost_limit.so is your module. That's it. Now you have to install it.
-This is different for each system, so i will show how to install it in a Fedora install :
+`mod_vhost_limit.so` is your module. That's it. Now you have to install it.
+This is different for each system, so i will show how to install it in...
+
+## Fedora/Redhat:
 
 ```bash
 $ cp -f mod_vhost_limit.so /etc/httpd/modules/
 $ echo -e "\nLoadModule vhost_limit_module modules/mod_vhost_limit.so" >> /etc/httpd/conf.modules.d/00-base.conf
 $ systemctl restart httpd
 ```
+
+## Debian/Ubuntu:
+
+```bash
+$ cp -f mod_vhost_limit.so //usr/lib/apache2/modules/
+$ echo -e "\nLoadModule vhost_limit_module modules/mod_vhost_limit.so" >> /etc/apache2/mods-available/vhost_limit.load
+$ a2enmod vhost_limit
+$ systemctl restart apache2
+```
+
 <pre>
 $ tail /var/log/httpd/error_log
 
@@ -77,8 +89,6 @@ To make it DO something, you need to use the only directive supported (for now)
 And restart httpd/apache.
 <b>MaxVhostClients</b> will set a maximum number of connections to be accepted for that vhost.
 
-Everytime you get a visit, a per-vhost counter will increment. When that connection is finished, the counter will decrement. In this case, we are limiting the vhost to 3 simultaneous connections, and every excess visit will receive a HTTP_SERVICE_UNAVAILABLE response.
+Everytime you get a visit, a per-vhost counter will increment. When that connection is finished, the counter will decrement. In this case, we are limiting the vhost to 3 simultaneous connections, and every excess visit will receive a `HTTP_SERVICE_UNAVAILABLE` response.
 
 > Please note : Using a fastcgi script (e.g. mod_fcgi/php-fpm) might not close the connection immediately after finished. It might take a little longer. So if you are testing, have this in mind before thinking something broke.
-
-