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Workaround to cope with the dl crowd and the libc crowd

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This commit is contained in:
Miguel de Icaza
2018-02-23 23:16:16 -05:00
parent c3e45f7cbb
commit 6edcc8240b
1 changed files with 27 additions and 5 deletions
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32
Terminal.Gui/MonoCurses/binding.cs
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@@ -52,10 +52,23 @@ namespace Unix.Terminal {
static void FindNCurses ()
{
if (File.Exists ("/usr/lib/libncurses.dylib"))
curses_handle = dlopen ("libncurses.dylib", 1);
else
curses_handle = dlopen ("libncurses.so", 1);
try {
if (File.Exists ("/usr/lib/libncurses.dylib"))
curses_handle = dlopen ("libncurses.dylib", 1);
else
curses_handle = dlopen ("libncurses.so", 1);
} catch (DllNotFoundException) {
uselibc = true;
if (File.Exists ("/usr/lib/libncurses.dylib"))
curses_handle = libc_dlopen ("libncurses.dylib", 1);
else {
curses_handle = libc_dlopen ("libncurses.so", 1);
if (curses_handle == IntPtr.Zero) {
Console.WriteLine ("It is not possible to open libncurses.so, you might need to symlink libncurses.so.5 to libncurses.so");
Environment.Exit (1);
}
}
}
if (curses_handle == IntPtr.Zero)
throw new Exception ("Could not dlopen ncurses");
@@ -320,11 +333,20 @@ namespace Unix.Terminal {
[DllImport ("dl")]
extern static IntPtr dlsym (IntPtr handle, string symbol);
[DllImport ("libc", EntryPoint="dlopen")]
extern static IntPtr libc_dlopen (string file, int mode);
[DllImport ("libc", EntryPoint ="dlsym")]
extern static IntPtr libc_dlsym (IntPtr handle, string symbol);
static bool uselibc;
static IntPtr stdscr;
static IntPtr get_ptr (string key)
{
var ptr = dlsym (curses_handle, key);
var ptr = uselibc ? libc_dlsym (curses_handle, key) : dlsym (curses_handle, key);
if (ptr == IntPtr.Zero)
throw new Exception ("Could not load the key " + key);
return ptr;