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openmpi/opal/mca/common/sm/Makefile.am
Jeff Squyres 9334abc474 Makefile: fix problems with static linking
Avoid a problem with double-derefence of a variable macro name (i.e.,
a macro with part of its name from an AC_SUBST, such as
```$(foo@BAR@baz)```.

In what might be a bug in Automake 1.14.1, if you do a pattern like
this:

```makefile
lib_LTLIBRARIES = lib@A_PREFIX@a_lib.la
noinst_LTLIBRARIES = lib@A_PREFIX@a_noinst.la

lib@A_PREFIX@a_lib_la_SOURCES = a.c

lib@A_PREFIX@a_noinst_la_SOURCES = $(lib@A_PREFIX@a_lib_la_SOURCES)
```

Then in the resulting Makefile, the value of
```$(lib@A_PREFIX@a_lib_la_OBJECTS)``` will be *blank* (when it really
should be ```a.o```).

To workaround this potential bug, I've simply avoided doing
double-derefences like this, and effectively set the second
```_SOURCES``` line equal to ```a.c``` (just like the first
```_SOURCES``` line).

Fixes #250.
2014-10-24 16:27:54 -07:00

118 строки
4.1 KiB
Makefile

#
# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
# University Research and Technology
# Corporation. All rights reserved.
# Copyright (c) 2004-2005 The University of Tennessee and The University
# of Tennessee Research Foundation. All rights
# reserved.
# Copyright (c) 2004-2009 High Performance Computing Center Stuttgart,
# University of Stuttgart. All rights reserved.
# Copyright (c) 2004-2005 The Regents of the University of California.
# All rights reserved.
# Copyright (c) 2010-2014 Cisco Systems, Inc. All rights reserved.
# Copyright (c) 2010-2013 Los Alamos National Security, LLC.
# 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_sm.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_sm.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!
# Header files
headers = \
common_sm.h
# Source files
sources = \
common_sm.c
# Help file
dist_opaldata_DATA = help-mpi-common-sm.txt
# 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_<type>_<name>.la). The noinst one can be named
# whatever it wants, although libmca_<type>_<name>_noinst.la is
# recommended.
# To simplify components that link to this library, we will *always*
# have an output libtool library named libmca_<type>_<name>.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_<type>_<name>.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 = lib@OPAL_LIB_PREFIX@mca_common_sm.la
comp_noinst = lib@OPAL_LIB_PREFIX@mca_common_sm_noinst.la
if MCA_BUILD_opal_common_sm_DSO
lib_LTLIBRARIES += $(comp_inst)
else
noinst_LTLIBRARIES += $(comp_noinst)
endif
lib@OPAL_LIB_PREFIX@mca_common_sm_la_SOURCES = \
$(headers) $(sources)
lib@OPAL_LIB_PREFIX@mca_common_sm_la_LDFLAGS = \
-version-info $(libmca_common_sm_so_version)
lib@OPAL_LIB_PREFIX@mca_common_sm_noinst_la_SOURCES = \
$(headers) $(sources)
# Conditionally install the header files
if WANT_INSTALL_HEADERS
opaldir = $(opalincludedir)/$(subdir)
opal_HEADERS = $(headers)
endif
# 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).
# See Makefile.ompi-rules for an explanation of the "V" macros, below
V=0
OMPI_V_LN_SCOMP = $(ompi__v_LN_SCOMP_$V)
ompi__v_LN_SCOMP_ = $(ompi__v_LN_SCOMP_$AM_DEFAULT_VERBOSITY)
ompi__v_LN_SCOMP_0 = @echo " LN_S " `basename $(comp_inst)`;
all-local:
$(OMPI_V_LN_SCOMP) if test -z "$(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