+= Build notes

documentation/README.hpux

@@ -48,6 +48,25 @@ suite, set the environment variable EPICS_HOST_ARCH=hpux-parisc-gnu
 before starting to compile base.
 
 
+Building
+--------
+
+Should be quite normal. Edit the CONFIG_SITE files and "make". (Be sure
+that GNU make is in your path or call it explicitly as the standard make
+on HP is _not_ GNU.)
+
+When compiling with aCC, you will see quite a few warning messages. Most
+of these warnings - if not all - will be in system header files. There
+is no decent way to suppress these warnings without suppressing the
+warnings in the EPICS code. So close your eyes and stand it.
+You may also note an unusual compile line that filters stuff through a
+perl script. This is part of a mechanism that allows to selectively
+block bogus warnings (using special comment lines) that are generated by
+the HP compiler. Without this treatment you would see zillions of
+warning messages. Feel free to try this by setting COMPILE_FILTER.cpp
+empty on the compile line ... ;-)
+
+
 Shared Libraries
 ----------------