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20030804: udunits on cygwin

Connor,

>Date: Fri, 01 Aug 2003 17:00:09 -0700
>From: "Flynn, Connor J" <address@hidden>
>Organization: NOAA/PNL
>To: Steve Emmerson <address@hidden>
>Subject: RE: 20030731: udunits on cygwin

The above message contained the following:

> I've attached a small shell script (cygwin_setup.sh) that sets the
> required environmental variables and also echos the necessary configure
> changes to the screen.
> 
> If you don't like attachments, then here is the text of cygwin_setup.sh:
> 
> #/bin/sh
> echo
> echo
> echo This script sets up the environment to compile udunits under Cygwin
> 
> #Set the following environment variables:
> CPPFLAGS=3D-Df2cFortran  # Most important!
> CXX=3Dg++                # Also important!
> CC=3Dgcc                 # Not really a big deal.
> CFLAGS=3D-O              # Capital O for optimize.
> FC=3Dg77                 # Fortran compiler
> FFLAGS=3D-O              # Capital O for optimize.
>
> echo It sets:
> echo CPPFLAGS=3D$CPPFLAGS   Important!
> echo CXX=3D$CXX             Important!
> echo CC=3D$CC               Not really important
> echo CFLAGS=3D$CFLAGS
> echo FC=3D$FC
> echo FFLAGS=3D$FFLAGS
> echo
> 
> #Don't forget to export:
> export CPPFLAGS
> export CC
> export CXX
> export CFLAGS
> export FC
> export FFLAGS
> 
> # The configure file also needs minor modification.  In the block of sed
> 
> # substitutions containing the string "s%@CPPFLAGS@%$CPPFLAGS%g" similar
> # lines are necessary for the CXX and FC flags. =20
> # Specifically, add the following:
> #   s%@CXX@%$CXX%g
> #   s%@FC@%$FC%g
> #
> 
> echo You will also need to modify the configure file as follows:
> echo After line 5219 containing s%@CPPFLAGS@%\$CPPFLAGS%g
> echo also add the following lines:
> echo=20
> echo   s%@CXX@%\$CXX%g
> echo   s%@FC@%\$FC%g
> echo
> echo That should do it... =20
> echo Now run ./configure and make!

Why is it important to define a Fortran and C++ compiler (environment
variables FC and CXX)?  The UDUNITS package doesn't use them.

> I'm not experienced with sed or I might have included the modifications
> to the configure file as part of the shell script, but I hope this is
> clear enough.
> 
> Best regards,
> Connor Flynn

Regards,
Steve Emmerson