ltmain.in: Fix mistaking a directory as an executable

find_executable() can return a directory of the same name as the target
executable if the directory is found earlier in the PATH, which causes
check_executable() to fail.

Reported: https://savannah.gnu.org/support/?111191

* build-aux/ltmain.in: Check if directory is found before executable
  in the PATH.

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index c59459d05b96fb699a0d2f7a52eb235d2490ec64..36a85b9e1257ef5db182a072452199455d9a9105 100644 (file)
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -4241,7 +4241,7 @@ check_executable (const char *path)
   if ((!path) || (!*path))
     return 0;
 
-  if ((stat (path, &st) >= 0)
+  if ((stat (path, &st) >= 0) && !S_ISDIR (st.st_mode)
       && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
     return 1;
   else