# # Copyright (c) 2009-2012 Mellanox Technologies. All rights reserved. # Copyright (c) 2009-2012 Oak Ridge National Laboratory. All rights reserved. # $COPYRIGHT$ # # Additional copyrights may follow # # $HEADER$ # # A word of explanation... # # This library is linked against various MCA components because all # shared-memory based components (e.g., mpool, ptl, etc.) need to # share some common code and data. There's two cases: # # 1. libmca_common_netpatterns.la is a shared library. By linking that shared # library to all components that need it, the OS linker will # automatically load it into the process as necessary, and there will # only be one copy (i.e., all the components will share *one* copy of # the code and data). # # 2. libmca_common_netpatterns.la is a static library. In this case, it will # be rolled up into the top-level libmpi.la. It will also be rolled # into each component, but then the component will also be rolled up # into the upper-level libmpi.la. Linkers universally know how to # "figure this out" so that we end up with only one copy of the code # and data. # # Note that building this common component statically and linking # against other dynamic components is *not* supported! EXTRA_DIST = .windows # Header files headers = \ common_netpatterns.h \ common_netpatterns_knomial_tree.h \ common_coll_ops.h # Source files sources = \ common_netpatterns_base.c \ common_netpatterns_multinomial_tree.c \ common_netpatterns_nary_tree.c \ common_netpatterns_knomial_tree.c # common_allreduce.c # the allredeace is broken # As per above, we'll either have an installable or noinst result. # The installable one should follow the same MCA prefix naming rules # (i.e., libmca__.la). The noinst one can be named # whatever it wants, although libmca___noinst.la is # recommended. # To simplify components that link to this library, we will *always* # have an output libtool library named libmca__.la -- even # for case 2) described above (i.e., so there's no conditional logic # necessary in component Makefile.am's that link to this library). # Hence, if we're creating a noinst version of this library (i.e., # case 2), we sym link it to the libmca__.la name # (libtool will do the Right Things under the covers). See the # all-local and clean-local rules, below, for how this is effected. lib_LTLIBRARIES = noinst_LTLIBRARIES = comp_inst = libmca_common_netpatterns.la comp_noinst = libmca_common_netpatterns_noinst.la if MCA_BUILD_ompi_common_netpatterns_DSO lib_LTLIBRARIES += $(comp_inst) else noinst_LTLIBRARIES += $(comp_noinst) endif libmca_common_netpatterns_la_SOURCES = $(headers) $(sources) libmca_common_netpatterns_noinst_la_SOURCES = $(libmca_common_netpatterns_la_SOURCES) # These two rules will sym link the "noinst" libtool library filename # to the installable libtool library filename in the case where we are # compiling this component statically (case 2), described above). all-local: if test -z "$(lib_LTLIBRARIES)"; then \ rm -f "$(comp_inst)"; \ $(LN_S) "$(comp_noinst)" "$(comp_inst)"; \ fi clean-local: if test -z "$(lib_LTLIBRARIES)"; then \ rm -f "$(comp_inst)"; \ fi