[GRASS-dev] Re: [GRASS GIS] #657: add --with-openmp support to ./configure

GRASS GIS trac at osgeo.org
Sun Dec 11 20:56:00 EST 2011

#657: add --with-openmp support to ./configure
 Reporter:  hamish     |       Owner:  grass-dev@…              
     Type:  task       |      Status:  new                      
 Priority:  normal     |   Milestone:  7.0.0                    
Component:  Compiling  |     Version:  svn-trunk                
 Keywords:  openmp     |    Platform:  All                      
      Cpu:  All        |  

Comment(by hamish):

 added in trunk with r49652 with support for: gcc (>=4.2.1), Intel's C
 compiler, AMD's x86 Open64 compiler, and PGI's compiler. Additional
 support for Solaris cc, AIX xlc, and SGI IRIX 6.5 MIPSpro C is known but
 left commented out for now.

 # try to build a test program with "$CC $OMPCLFAGS" to confirm it works
 #echo "int main() {return 0;}" > test.c
 #$CC $OMPCLFAGS test.c -o test

 I think the test compile is better than explicitly checking the gcc
 GCC_VERSION=`${CC} -dumpversion`
 GCC_VERSION_MAJOR=$(echo $GCC_VERSION | cut -d'.' -f1)
 GCC_VERSION_MINOR=$(echo $GCC_VERSION | cut -d'.' -f2)
 GCC_VERSION_PATCH=$(echo $GCC_VERSION | cut -d'.' -f3)

 for a gcc version test, see also:

 a positive but reasonably inefficient speedup for v.surf.rst has been
 added in r49653.


Ticket URL: <https://trac.osgeo.org/grass/ticket/657#comment:6>
GRASS GIS <http://grass.osgeo.org>

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