194 строки
7.9 KiB
Plaintext
194 строки
7.9 KiB
Plaintext
dnl
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dnl Copyright (c) 2004-2009 The Trustees of Indiana University and Indiana
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dnl University Research and Technology
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dnl Corporation. All rights reserved.
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dnl Copyright (c) 2004-2005 The University of Tennessee and The University
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dnl of Tennessee Research Foundation. All rights
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dnl reserved.
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dnl Copyright (c) 2004-2007 High Performance Computing Center Stuttgart,
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dnl University of Stuttgart. All rights reserved.
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dnl Copyright (c) 2004-2005 The Regents of the University of California.
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dnl All rights reserved.
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dnl Copyright (c) 2006-2013 Cisco Systems, Inc. All rights reserved.
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dnl Copyright (c) 2006-2008 Sun Microsystems, Inc. All rights reserved.
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dnl Copyright (c) 2006-2007 Los Alamos National Security, LLC. All rights
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dnl reserved.
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dnl Copyright (c) 2009 Oak Ridge National Labs. All rights reserved.
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dnl $COPYRIGHT$
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dnl
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dnl Additional copyrights may follow
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dnl
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dnl $HEADER$
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dnl
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AC_DEFUN([OPAL_SETUP_LIBLTDL],[
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OPAL_VAR_SCOPE_PUSH([HAPPY])
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opal_show_subtitle "GNU libltdl setup"
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# AC_CONFIG_SUBDIRS appears to be broken for non-gcc compilers (i.e.,
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# passing precious variables down to the sub-configure).
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#
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# Finally, make ltdl follow the same shared/static convention that was
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# user for the main OMPI libraries. So manually examine
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# $enable_shared and $enable_static and pass down the corresponding
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# flags.
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LIBLTDL_SUBDIR=
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OPAL_HAVE_LTDL_ADVISE=0
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OPAL_LIBLTDL_INTERNAL=0
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AS_IF([test "$OPAL_ENABLE_DLOPEN_SUPPORT" = "0"],
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[AC_MSG_WARN([libltdl support disabled (by --disable-dlopen)])
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LIBLTDL=
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LDTLINCL=
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OPAL_WRAPPER_FLAGS_ADD(LIBS, "$LIBS")],
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[
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# Default to building the internal copy. After this,
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# paffinity_hwloc_location is guaranteed to be set to one of:
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# "internal", a directory name (i.e., whatever the user
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# supplied), or "no".
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libltdl_location=$with_libltdl
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AS_IF([test -z "$libltdl_location" -o "$libltdl_location" = "yes"],
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[libltdl_location=internal])
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AC_MSG_CHECKING([location of libltdl])
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case $libltdl_location in
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no)
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AC_MSG_WARN([--without-libltdl specified in conjunction with])
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AC_MSG_WARN([--enable-dlopen (or --disable-dlopen was not specified)])
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AC_MSG_WARN([Cannot have dlopen without libltdl])
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AC_MSG_ERROR([Cannot continue])
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;;
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internal)
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AC_MSG_RESULT([internal copy])
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_OPAL_SETUP_LIBLTDL_INTERNAL
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;;
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external)
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AC_MSG_RESULT([external copy (unspecified)])
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# If we're using an extern libltdl, then reset the
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# LTDLINCL that was set earlier (ie., there's no need to
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# -I into our internal libltdl tree).
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LIBLTDL=
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LDTLINCL=
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libltdl_location=
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libltdl_need_external=1
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;;
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*)
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AC_MSG_RESULT([external copy ($libltdl_location)])
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OPAL_CHECK_WITHDIR([libltdl], [$libltdl_location],
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[include/ltdl.h])
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# If we're using an extern libltdl, then reset the
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# LTDLINCL that was set earlier (ie., there's no need to
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# -I into our internal libltdl tree).
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LIBLTDL=
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LDTLINCL=
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libltdl_need_external=1
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;;
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esac
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AS_IF([test "$libltdl_need_external" = "1"],
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[OPAL_CHECK_PACKAGE([libltdl],
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[ltdl.h],
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[ltdl],
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[lt_dlopen],
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[],
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[$libltdl_location],
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[],
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[],
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[AC_MSG_WARN([External libltdl installation not found])
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AC_MSG_WARN([or not usable.])
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AC_MSG_ERROR([Cannot continue.])])
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CPPFLAGS="$CPPFLAGS $libltdl_CPPFLAGS"
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LDFLAGS="$LDFLAGS $libltdl_LDFLAGS"
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LIBS="$LIBS $libltdl_LIBS"
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# Check for lt_dladvise_init; warn if we don't have
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# it
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AC_CHECK_FUNC([lt_dladvise_init],
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[OPAL_HAVE_LTDL_ADVISE=1],
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[AC_MSG_WARN([*********************************************])
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AC_MSG_WARN([Could not find lt_dladvise_init in the])
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AC_MSG_WARN([external libltdl installation.])
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AC_MSG_WARN([This could mean that your libltdl version])
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AC_MSG_WARN([is old. We recommend that you re-configure])
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AC_MSG_WARN([Open MPI with --with-libltdl=internal to])
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AC_MSG_WARN([use the internal libltdl copy in Open MPI.])
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AC_MSG_WARN([])
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AC_MSG_WARN([Sleeping 10 seconds to give you a])
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AC_MSG_WARN([chance to read this message.])
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AC_MSG_WARN([*********************************************])
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sleep 10
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])
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])
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])
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AC_SUBST(LTDLINCL)
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AC_SUBST(LIBLTDL)
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AC_SUBST(LIBLTDL_SUBDIR)
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AC_DEFINE_UNQUOTED(OPAL_HAVE_LTDL_ADVISE, $OPAL_HAVE_LTDL_ADVISE,
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[Whether libltdl appears to have the lt_dladvise interface])
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AC_DEFINE_UNQUOTED(OPAL_WANT_LIBLTDL, $OPAL_ENABLE_DLOPEN_SUPPORT,
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[Whether to include support for libltdl or not])
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AC_DEFINE_UNQUOTED(OPAL_LIBLTDL_INTERNAL, $OPAL_LIBLTDL_INTERNAL,
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[Whether we are using the internal libltdl or not])
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AM_CONDITIONAL(OPAL_HAVE_DLOPEN,
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[test "$OPAL_ENABLE_DLOPEN_SUPPORT" = "1"])
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OPAL_VAR_SCOPE_POP([HAPPY])
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])dnl
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#
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# Setup to build the internal copy of libltdl
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#
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AC_DEFUN([_OPAL_SETUP_LIBLTDL_INTERNAL],[
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OPAL_VAR_SCOPE_PUSH([CFLAGS_save CPPFLAGS_save])
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opal_subdir_args="$opal_subdir_args --enable-ltdl-convenience --disable-ltdl-install"
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if test "$enable_shared" = "yes"; then
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opal_subdir_args="$opal_subdir_args --enable-shared"
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else
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opal_subdir_args="$opal_subdir_args --disable-shared"
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fi
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if test "$enable_static" = "yes"; then
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opal_subdir_args="$opal_subdir_args --enable-static"
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else
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opal_subdir_args="$opal_subdir_args --disable-static"
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fi
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CFLAGS_save="$CFLAGS"
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CFLAGS="$OPAL_CFLAGS_BEFORE_PICKY $OPAL_VISIBILITY_CFLAGS"
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# VPATH support will be included by default in CONFIG_SUBDIR
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OPAL_CONFIG_SUBDIR(opal/libltdl, [$opal_subdir_args],
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[HAPPY=1], [HAPPY=0])
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if test "$HAPPY" = "1"; then
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LIBLTDL_SUBDIR=libltdl
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OPAL_LIBLTDL_INTERNAL=1
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CPPFLAGS_save="$CPPFLAGS"
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CPPFLAGS="-I$srcdir/opal/libltdl/"
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# Must specifically mention $srcdir here for VPATH builds
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# (this file is in the src tree).
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AC_EGREP_HEADER([lt_dladvise_init], [$srcdir/opal/libltdl/ltdl.h],
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[OPAL_HAVE_LTDL_ADVISE=1])
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CPPFLAGS="$CPPFLAGS_save"
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# --export-dynamic allows exported symbols to be resolved via
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# --dlsym and friends.
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LDFLAGS="-export-dynamic $LDFLAGS"
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else
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AC_MSG_WARN([Failed to build GNU libltdl. This usually means that something])
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AC_MSG_WARN([is incorrectly setup with your environment. There may be useful information in])
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AC_MSG_WARN([opal/libltdl/config.log. You can also disable GNU libltdl, which will disable])
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AC_MSG_WARN([dynamic shared object loading, by configuring with --disable-dlopen.])
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AC_MSG_ERROR([Cannot continue])
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fi
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CFLAGS="$CFLAGS_save"
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OPAL_VAR_SCOPE_POP
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])dnl
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