********>Bugfix 1:
Author: Dave Case
Date: 3/6/02

Programs: sander, nmode

Severity: with some compliers (notably ifc and pgf77,pgf90), sander can
          "hang" in targetted MD, and nmode can generally "hang".

Description: the LAPACK routine dlamch.f does not work correctly with
          optimized compilation.  The fix is to compile witout optimization.

Fix:  apply the following patch to amber7/src/lapack/Makefile:

------------------------------------------------------------------------------

*** Makefile    2000/02/23 04:01:11     1.6
--- Makefile    2002/03/06 17:47:43
***************
*** 37,39 ****
--- 37,41 ----
  .f.o: $<
        $(SRCDIR)/Compile L3 $<
  
+ dlamch.o:  dlamch.f
+       ../Compile L0 dlamch.f

------------------------------------------------------------------------------

Also apply the following patch to amber7/src/Machines/Machine.ifc (if you
use the ifc compiler):

*** Machine.ifc 2002/01/25 01:52:08     1.4
--- Machine.ifc 2002/03/06 17:55:28
***************
*** 53,59 ****
  setenv LOADLIB " -lPEPCF90"
  
  # little or no optimization:
! setenv L0 "ifc -c -w  -O2 "
  
  # modest optimization (local scalar):
  setenv L1 "ifc -c -w  -O2 "
--- 53,59 ----
  setenv LOADLIB " -lPEPCF90"
  
  # little or no optimization:
! setenv L0 "ifc -c -w -g -O0 "
  
  # modest optimization (local scalar):
  setenv L1 "ifc -c -w  -O2 "

------------------------------------------------------------------------------

Temporary workarounds:  none

Files affected:  amber7/src/lapack/Makefile, amber7/src/Machines/Machine.ifc