# 
# 
# patch "ChangeLog"
#  from [518ee172d4c0c6af3292370c557874c534731681]
#    to [799d62f415fe212cd15ceaa5b33fdc95200df61a]
# 
# patch "HACKING"
#  from [54335ea1fe81e8117366e5a82c5e56d86ba951cc]
#    to [9192838166bf96f1f7d8369bc1ac8fcc8dc74be7]
# 
# patch "INSTALL"
#  from [54295f34283c38aee1a57864548eceeeae69f4c3]
#    to [e8c5a114eb284a7163393b4721179147dbc165ac]
# 
============================================================
--- ChangeLog	518ee172d4c0c6af3292370c557874c534731681
+++ ChangeLog	799d62f415fe212cd15ceaa5b33fdc95200df61a
@@ -1,3 +1,9 @@
+2005-01-25  Matt Johnston  <address@hidden>
+
+	* HACKING: add some notes about compiling - precompiled headers,
+	-O0, and ccache.
+	* INSTALL: mention --enable-pch
+
 2005-01-24  Timothy Brownawell  <address@hidden>
 
 	Make a netsync client crash not hang the testsuite.
============================================================
--- HACKING	54335ea1fe81e8117366e5a82c5e56d86ba951cc
+++ HACKING	9192838166bf96f1f7d8369bc1ac8fcc8dc74be7
@@ -259,3 +259,20 @@
 third-party code may not make sense to send upstream.  In this case, make a
 note of this in the file you're changing and in the ChangeLog so that this
 permanent deviation is documented.
+
+
+Compiling Hints
+---------------
+
+  - monotone's compilation time can be improved significantly by compiling
+  with 'CXXFLAGS=-O0'. Note that disabling optimisation makes the resultant
+  binary significantly slower - don't bother using it for performance
+  profiling.
+
+  - precompiled headers can be enabled by running 'configure' with --enable-pch
+  This should give shorter compile times, given boost's extensive use of
+  templates.  Some versions of gcc have issues with precompiled headers, so if
+  you get strange compilation errors, try disabling them.
+
+  - ccache (http://ccache.samba.org/) is quite effective for speeding up
+  repeated compiles of the same source.
============================================================
--- INSTALL	54295f34283c38aee1a57864548eceeeae69f4c3
+++ INSTALL	e8c5a114eb284a7163393b4721179147dbc165ac
@@ -136,6 +136,12 @@
        note that, sometimes, the configure script will be able to guess
        the correct suffix by itself.
 
+     --enable-pch
+
+       this will enable precompiled headers, which should improve compile
+       time. some versions of gcc have problems with this option, so
+       try disabling it if you run into trouble.
+
 3. building monotone
 
   * type "make". this should produce a monotone binary in your current