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libgimpbase: support multiarch folders for binary relocability on Linux. 

This is not seen on all distributions (mostly on Debian-based ones in my
experience), but some distributions install libraries in a second-level
directory under prefix (e.g. lib/x86_64-linux-gnu/ instead of lib/ or lib64/)
whereas our prefix-guessing code for relocatable builds harcoded moving up from
1 level.

This new heuristic will assume that if the leaf directory is neither bin/ nor
starting with `lib`, then it's likely a multiarch folder and we must move up
once more to find the prefix folder.

This should also fix the problem encountered by Bruno for the current work on a
potential official AppImage.
This commit is contained in:
Jehan 2024-04-04 19:49:30 +02:00
parent 1387d4d081
commit 1c2472a092
1 changed files with 19 additions and 0 deletions
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19
libgimpbase/gimpreloc.c
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@ -452,6 +452,7 @@ gchar *
_gimp_reloc_find_prefix (const gchar *default_prefix)
{
gchar *dir1, *dir2;
gchar *exe_dir;
if (exe == NULL)
{
@ -464,6 +465,24 @@ _gimp_reloc_find_prefix (const gchar *default_prefix)
dir1 = g_path_get_dirname (exe);
dir2 = g_path_get_dirname (dir1);
exe_dir = g_path_get_basename (dir1);
if (g_strcmp0 (exe_dir, "bin") != 0 && ! g_str_has_prefix (exe_dir, "lib"))
{
g_free (exe_dir);
exe_dir = g_path_get_basename (dir2);
if (g_str_has_prefix (exe_dir, "lib"))
{
/* Supporting multiarch folders, such as lib/x86_64-linux-gnu/ */
gchar *dir3 = g_path_get_dirname (dir2);
g_free (dir2);
dir2 = dir3;
}
}
g_free (dir1);
g_free (exe_dir);
return dir2;
}