e81c070ef0
Embedding libltdl without the use of Libtool bootstrapping has proven... difficult. Instead, create a new simple "dl" framework. It only provides 4 functions: - open a DSO (very similar to lt_dlopenadvise()) - lookup a symbol in a previously-opened DSO (very similar to lt_dlsym()) - close a previously-opened DSO (very similar to lt_dlclose()) - iterate over all files in a directory (very similar to ld_dlforeachfile()) There will be follow-on commits with a simple dlopen-based component (nowhere near as complete/functional as libltdl, but good enough for Linux and OS X), and a libltdl-based component for all other platforms. The intent is that the dlopen-based component can be built by default in almost all cases. But if libltdl is available, that component will be built. End result: we still get DSO-based functionality by default in (almost?) all cases. Without embedding libltdl. Which is what we want.
53 строки
1.4 KiB
C
53 строки
1.4 KiB
C
/*
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* Copyright (c) 2004-2010 The Trustees of Indiana University.
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* All rights reserved.
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*
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* Copyright (c) 2015 Cisco Systems, Inc. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "opal_config.h"
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#ifdef HAVE_UNISTD_H
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#include "unistd.h"
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#endif
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#include "opal/include/opal/constants.h"
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#include "opal/util/output.h"
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#include "opal/mca/mca.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/dl/dl.h"
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#include "opal/mca/dl/base/base.h"
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int opal_dl_base_select(void)
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{
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int exit_status = OPAL_SUCCESS;
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opal_dl_base_component_t *best_component = NULL;
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opal_dl_base_module_t *best_module = NULL;
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/*
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* Select the best component
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*/
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if (OPAL_SUCCESS != mca_base_select("dl",
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opal_dl_base_framework.framework_output,
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&opal_dl_base_framework.framework_components,
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(mca_base_module_t **) &best_module,
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(mca_base_component_t **) &best_component) ) {
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/* This will only happen if no component was selected */
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exit_status = OPAL_ERROR;
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goto cleanup;
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}
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/* Save the winner */
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opal_dl_base_selected_component = best_component;
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opal_dl = best_module;
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cleanup:
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return exit_status;
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}
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