Hi Jim,
On Wed, Mar 24, 2010 at 4:59 PM, Robert Osfield
<[email protected]> wrote:
> The other possible solution might be to use the compilation of local
> source to see if the method is there. I will now look into this...
I have just tested out the following:
CHECK_FUNCTION_EXISTS(pthread_setaffinity_np HAVE_PTHREAD_SETAFFINITY_NP)
IF(HAVE_PTHREAD_SETAFFINITY_NP)
# double check that pthread_setaffinity_np is available as FreeBSD
header doesn't contain required function
CHECK_CXX_SOURCE_COMPILES("
#include <pthread.h>
int main() {
cpu_set_t cpumask;
CPU_ZERO( &cpumask );
CPU_SET( 0, &cpumask );
pthread_setaffinity_np( pthread_self(), sizeof(cpumask), &cpumask);
return 0;
}" COMPILES_PTHREAD_SETAFFINITY_NP)
IF (NOT COMPILES_PTHREAD_SETAFFINITY_NP)
SET(HAVE_PTHREAD_SETAFFINITY_NP OFF)
ENDIF()
ENDIF()
I tried out tweaking the source to compile/not compile and made sure
that the appropriate code paths are selected in the build of the
library. I've only attempted to recreate what I expect you'll find
under FreeBSD, but my guess is that it should work as there is other
similar bits of script used in this CMakeLists.txt. While this is
obviously a lot more long winded than a if FreeBSD check, it should at
least be a portable solution and if there comes a time when FreeBSD
does include the required functions in the main header it'll then
start working.
Could you do update to svn/trunk, remove your CMakeCache.txt and then
re-run "./configure" or "cmake ." and let me know how you get on.
Thanks,
Robert.
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