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114d07fd9a
DT_RUNPATH is only used to find the immediate dependencies of the executable or shared object containing the DT_RUNPATH entry: 1. Define link-test-modules-rpath-link if $(build-hardcoded-path-in-tests) is yes. 2. Use $(link-test-modules-rpath-link) in build-module-helper so that test modules can dlopen modules with DT_RUNPATH. 3. Add a test to show why link-test-modules-rpath-link is needed. This partially fixes BZ #28455.
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* Test BZ #28455.
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Copyright (C) 2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* In glibc configured with --enable-hardcoded-path-in-tests, a test
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program built with -Wl,--enable-new-dtags, which adds DT_RUNPATH,
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instead of DT_RPATH, can call a function in a shared library, which
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dlopens another shared library. */
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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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extern int test (void);
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int
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test (void)
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{
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(void) dlopen ("reldepmod4.so", RTLD_LAZY | RTLD_GLOBAL);
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if (dlsym (RTLD_DEFAULT, "call_me") != NULL)
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{
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puts ("found \"call_me\"");
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return EXIT_SUCCESS;
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}
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puts ("didn't find \"call_me\"");
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return EXIT_FAILURE;
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}
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