[Rd] R-devel CHTML problem

[Prof Brian Ripley]

It's due to a change in the way dlltool is called.  Easy to fix (I've just 
done so): add -k to the DLLTOOL line in MkChmDll.

On Thu, 27 Oct 2005 apjaworski at mmm.com wrote:

> Hi,
>
> I encountered this problem just before the 2.2.0 release.  Then it went
> away for a while and came back at the beginning of this week.  Here is what
> is happening (I am on Win2000 machine with all the necessary tools
> installed).
>
> I compile R-devel and R-patched trees every couple of days and install them
> in separate directories.  Everything seems to work fine for R-patched.
> Compilation of R-devel also goes without a problem, but when I try to use
> help with the chmhelp=TRUE I get two errors:
> 1.  A separate error windows pops up saying: "The procedure entry point
> HtmlHelpA at 16 could not be located in the dynamic link library hhctrl.ocx"
> 2.  I get the following on the R console
>      Error in dyn.load(x, as.logical(local), as.logical(now)) :
>                 unable to load shared library
> 'C:/local/R/rw230/bin/Rchtml.dll':
>       LoadLibrary failure:  The specified procedure could not be found.
>
> I tried to track down the problem but I do not know much about CHTML.  Here
> is what I discovered:
> 1.  The problem is with the Rchtml.dll (as 2 above suggests).  If I simply
> replace the Rchtml.dll in the bin directory of version 2.3 with Rchtml.dll
> from version 2.2 everything works fine!!
> 2.  Rchtml.dll is being built in the .../R-devel/src/gnuwin32/help folder.
> The contents of this folder is:
>      Makefile  libhhctrl.a  Rchtml.c  hhctrl.def   Rchtml.o
>      MkChmDll  logo.bmp     Rchm.css  Rchtml.dll*  R.stp
>     This is identical to the corresponding help folder in R-patched.
> 3.  All files in the help folders in both versions are identical (under
> diff) except: libhhctrl.a and Rchtml.dll
> 4.  Doing ar -t  libhhctrl.a produces:
>      dclact.o
>      dclach.o
>      dclacs00000.o
>      in R-dvel but
>      dquxbt.o
>      dquxbh.o
>      dquxbs00000.o
>      in R-patched.
> 5.  The make process output for building  libhhctrl.a and Rchtml.dll is
> identical:
>      ...
>      echo EXPORTS > hhctrl.def
>      echo HtmlHelpA at 16 >> hhctrl.def
>      dlltool --as as -k --dllname hhctrl.ocx  --def hhctrl.def
> --output-lib libhhctrl.a
>      gcc   -I "C:/Program Files/HTML Help Workshop/include" -c Rchtml.c -o
> Rchtml.o
>      gcc  --shared  -s -o Rchtml.dll Rchtml.def Rchtml.o -L.  -lhhctrl
>      cp Rchtml.dll ../../../bin/Rchtml.dll
>      ...
>
> I am not sure if this is a problem with my particular setup (version of
> hhctrl.ocx perhaps, which BTW is 5.2.3790.309) or a bug in R-devel.  Again,
> I do not understand the CHTML building process at all, so it is hard for me
> to figure out what is going on.
>
> Any help will be appreciated,
>
> Andy
>
>
> __________________________________
> Andy Jaworski
> 518-1-01
> Process Laboratory
> 3M Corporate Research Laboratory
> -----
> E-mail: apjaworski at mmm.com
> Tel:  (651) 733-6092
> Fax:  (651) 736-3122
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595