consolidate hints/instructions about using APR (and maybe APR-util) with httpd

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1389060 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 60 insertions, 11 deletions

diff --git a/INSTALL b/INSTALL
index 82c5acfd01..63a43d696e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -17,17 +17,7 @@
               might use "/usr/local/apache2" for PREFIX (without the
               quotes).
 
-            * Consider if you want to use a previously installed APR and
-              APR-Util (such as those provided with many OSes) or if
-              you need to use the APR and APR-Util from the
-              httpd-2.5.x-deps.tar.gz tarball via ./configure's
-              --with-included-apr option. This is required if you don't
-              have the compiler which the system APR was built with.  It
-              can also be advantageous if you are a developer who will be
-              linking your code with Apache or using a debugger to step
-              through server code, as it removes the possibility of
-              version or compile-option mismatches with APR and APR-util
-              code.
+            * Read the section "APR - Unix" below.
 
             * If you are a developer building Apache directly from
               Subversion, you will need to run ./buildconf before running
@@ -63,6 +53,65 @@
   The easiest way to find all of the configuration flags for Apache 2.5
   is to run ./configure --help.
 
+  APR - Unix
+  ----------
+
+  httpd trunk (httpd development version 2.5) can use APR trunk (future
+  APR version 2.0) or the combination of the current APR 1.x branch and
+  the current APR-util 1.x branch.  (APR trunk bundles the features in
+  APR-util 1.x.)
+
+  The httpd buildconf step, required when building httpd from Subversion,
+  must have access to the APR source.  The httpd configure step, always
+  required, can configure the APR source in srclib or use a previously-
+  built APR.
+
+  APR (and APR-util if using APR 1.x) can be built with httpd from httpd's
+  srclib directory or can be built separately, prior to building httpd.
+ 
+  Building APR with httpd from httpd's srclib directory is required if
+  you don't have the compiler which the system APR was built with, and it
+  can also be advantageous if you are a developer who will be linking your
+  code with httpd or using a debugger to step through server code, as it
+  removes the possibility of version or compile-option mismatches with
+  APR and APR-util code.
+
+  To use APR trunk in srclib:
+
+    Check out APR trunk in srclib/apr with the following command:
+
+    svn co http://svn.apache.org/repos/asf/apr/apr/trunk srclib/apr
+
+    buildconf will find it automaticaly.  Use the --with-included-apr
+    argument to httpd configure.
+
+  To use APR 1.x and APR-util 1.x in srclib:
+
+    Check out the current branches as srclib/apr and srclib/apr-util with
+    the following commands:
+
+    svn co http://svn.apache.org/repos/asf/apr/apr/branches/1.4.x srclib/apr
+    svn co http://svn.apache.org/repos/asf/apr/apr-util/branches/1.5.x srclib/apr-util
+
+    buildconf will find them automaticaly.  Use the --with-included-apr
+    argument to httpd configure.
+
+  To use existing checkouts of APR (and APR-util if using APR 1.x):
+
+    httpd buildconf must have access to the source trees.  Use these arguments
+    to httpd buildconf:
+
+    --with-apr=[path to apr source] --with-apr-util=[path to apr-util source]
+  
+    (Omit --with-apr-util if using APR trunk.)
+
+    httpd configure must have access to a previously build apr.  Use these
+    arguments to httpd configure:
+
+    --with-apr=[path to apr install] --with-apr-util=[path to apr-util install]
+  
+    (Omit --with-apr-util if using APR trunk.)
+
 
   Quick Start - Windows
   ---------------------