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3e2be87832
If C++ support is not available, links-dso-program-c is used instead of the C++ version. The C version was not linked against libgcc_s, which meant that thread cancellation and the backtrace function did not work in containers tests in that situation. Reviewed-by: Sam James <sam@gentoo.org>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
#include <stdio.h>
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#include <dlfcn.h>
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/* makedb needs selinux dso's. */
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#ifdef HAVE_SELINUX
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# include <selinux/selinux.h>
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#endif
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/* The purpose of this file is to indicate to the build system which
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shared objects need to be copied into the testroot, such as gcc or
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selinux support libraries. This program is never executed, only
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scanned for dependencies on shared objects, so the code below may
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seem weird - it's written to survive gcc optimization and force
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such dependencies.
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*/
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/* Use attribute cleanup to force linking against libgcc_s. */
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static void
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cleanup_function (int *ignored)
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{
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puts ("cleanup performed");
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}
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void
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invoke_callback (void (*callback) (int *))
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{
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__attribute__ ((cleanup (cleanup_function))) int i = 0;
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callback (&i);
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}
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int
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main (int argc, char **argv)
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{
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/* Complexity to keep gcc from optimizing this away. */
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printf ("This is a test %s.\n", argc > 1 ? argv[1] : "null");
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#ifdef HAVE_SELINUX
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/* This exists to force libselinux.so to be required. */
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printf ("selinux %d\n", is_selinux_enabled ());
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#endif
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/* Prevent invoke_callback from being optimized away. */
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{
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Dl_info dli;
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dladdr (invoke_callback, &dli);
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}
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return 0;
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}
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