[MITgcm-support] IBM

[Ed Hill]

On Fri, 2004-05-07 at 10:50, Patrick Heimbach wrote:
> Martin,
> 
> not sure whether this helps.
> On blackforest we have
> /usr/bin/cc -> /usr/vac/bin/xlc
> and also
> /usr/local/bin/gcc -> /usr/vac/bin/xlc
> So I'm guessing your machine doesn't have the cc softlink.
> 
> Re. CC in optfile, there seems to be a problem
> indeed with genmake2
> (e.g. no line similar to
> CC = ${CC}
> )


Hi folks,

Our handling of the C compiler within genmake2 could use some
improvement and I'll get right on it.

In the mean time, you can specify the C compiler by setting the
environment variable "CC" and heres an example (in bash):

  [amos ~]: mkdir MITgcm/verification/exp0/build
  [amos build]: cd MITgcm/verification/exp0/build
  [amos build]: ../../../tools/genmake2 -mods=../code
  ...
  [amos build]: make depend
  ...
  [amos build]: make tim.o
  cc  -c tim.c
  [amos build]: rm -f tim.o
  [amos build]: export CC=gcc
  [amos build]: make tim.o
  gcc  -c tim.c

that shows how both the default "cc" and the "gcc" compilers are used. 
For the [t]csh shell, just substitute

  $ setenv CC gcc

for the "export..." statement.

Ed

-- 
Edward H. Hill III, PhD
office:  MIT Dept. of EAPS;  Rm 54-1424;  77 Massachusetts Ave.
             Cambridge, MA 02139-4307
emails:  eh3 at mit.edu                ed at eh3.com
URLs:    http://web.mit.edu/eh3/    http://eh3.com/
phone:   617-253-0098
fax:     617-253-4464
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