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Specifying non-standard options

To install in a different location than /usr/local, use the -prefix= option to configure in step 2. For example,

./configure -prefix=/home/joe

will install the McStas programs in /home/joe/bin/ and the library files needed by McStas in /home/joe/lib/mcstas/.

On 64-bits systems, you may have to use: ./configure -with-pic before installing PGPLOT with: make install-pgplot

To enable NeXus format in mcformat, you need the NeXus and HDF libraries, and have to use: ./configure -with-nexus

To specify a non standard C compiler (e.g. gcc-4.2 or icc that support OpenMP), you may use e.g.: ./configure -with-cc=gcc-4.2

To enable a non standard C compiler to be used with MPI, you may have to edit your mpicc shell script to set e.g.: CC="icc", or redefine the 'cc' to point to your prefered compiler, e.g.: ln -s /usr/bin/gcc-4.2 /usr/bin/cc

In case ./configure makes an incorrect guess, some environment variables can be set to override the defaults:

The CC environment variable may be set to the name of the C compiler to use (this must be an ANSI C compiler). This will also be used for the automatic compilation of McStas simulations in mcgui and mcrun.
CFLAGS may be set to any options needed by the compiler (eg. for optimization or ANSI C conformance). Also used by mcgui/mcrun.
PERL may be set to the path of the Perl interpreter to use.

To use these options, set the variables before running ./configure. Eg.

setenv PERL /pub/bin/perl5

./configure

It may be necessary to remove configure's cache of old choices first:

rm -f config.cache

If you experience any problems, or have some questions or ideas concerning McStas, please contact peter.willendup@risoe.dk or the McStas mailing list at neutron-mc@risoe.dk.

root 2011-06-03

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Last Modified: Friday, 03-Jun-2011 20:19:51 CEST