mirror of
https://codeberg.org/tenacityteam/tenacity
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c8a799abdb
Adds a workaround that allows to use as much system libraries as possible.
* A list of libraries, that preferred is added
* Such libraries are moved to a different location
* When AppImage starts - we check, if user has the library installed and if not - we adjust LD_LIBRARY_PATH accordingly.
===============================================================================
Cherry picked from Audacity commit b630259884. Modified to work with Saucedacity.
Signed-off-by: Avery King <avery98@pm.me>
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
// SPDX-License-Identifier: MIT
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/* findlib.c
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* Dynamically load a shared object file and print its full path.
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* Part of library-utls - https://github.com/shoogle/library-utils
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* Copyright (c) 2020 Peter Jonas
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*/
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#define _GNU_SOURCE
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#include <link.h>
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#include <dlfcn.h>
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#include <libgen.h>
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#include <string.h>
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#include <stdio.h>
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char *help =
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"Usage: %s LIBRARY\n"
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"Print the full path to LIBRARY if it is dynamically loadable by this program.\n"
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"\n"
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"Exit status codes:\n"
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" 0 - Success!\n"
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" 1 - Failed to load LIBRARY (or one of its dependencies).\n"
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" 2 - Other error(s) occurred.\n"
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"\n"
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"LIBRARY will fail to load if any of the following are true:\n"
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" - The file is corrupt.\n"
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" - It is not found in any of the library search paths (see `man ld.so`).\n"
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" - It was compiled for a different architecture to that of this program.\n"
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" - It depends (via DT_NEEDED) on another library that fails to load.\n"
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"\n"
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"Hint: You can use the `file` command to show the processor architecture that\n"
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"any ELF library or executable (including this program) was compiled for.\n";
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int main(int argc, char *argv[])
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{
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if (argc != 2) {
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fprintf(stderr, help, basename(argv[0]));
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return 2;
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}
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if ((strcmp(argv[1], "-h") == 0) || (strcmp(argv[1], "--help") == 0)) {
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printf(help, basename(argv[0]));
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return 0;
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}
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// dlopen enables us to load shared objects during execution
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void *lib = dlopen(argv[1], RTLD_LAZY);
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if (lib == NULL) {
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fprintf(stderr, "%s: %s\n", basename(argv[0]), dlerror());
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return 1;
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}
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struct link_map * map;
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// dlinfo can return information about objects loaded with dlopen
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if (dlinfo(lib, RTLD_DI_LINKMAP, &map) == -1) {
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fprintf(lib, "%s: %s\n", basename(argv[0]), dlerror());
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return 2;
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}
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printf("%s\n", map->l_name);
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return 0;
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}
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