[PATCH] avocado: Fix BUILD_DIR if it's equal to SOURCE_DIR

[Peter Delevoryas <peter@pjd.dev>]

I like to build QEMU from the root source directory, rather than cd'ing
into the build directory. This code may as well include a search path
for that, so that you can run avocado tests individually without
specifying "-p qemu_bin=build/qemu-system-arm" manually.

Signed-off-by: Peter Delevoryas <peter@pjd.dev>
---
 tests/avocado/avocado_qemu/__init__.py | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/tests/avocado/avocado_qemu/__init__.py b/tests/avocado/avocado_qemu/__init__.py
index b656a70c55..ed4853c805 100644
--- a/tests/avocado/avocado_qemu/__init__.py
+++ b/tests/avocado/avocado_qemu/__init__.py
@@ -120,14 +120,15 @@ def pick_default_qemu_bin(bin_prefix='qemu-system-', arch=None):
     # qemu binary path does not match arch for powerpc, handle it
     if 'ppc64le' in arch:
         arch = 'ppc64'
-    qemu_bin_relative_path = os.path.join(".", bin_prefix + arch)
-    if is_readable_executable_file(qemu_bin_relative_path):
-        return qemu_bin_relative_path
-
-    qemu_bin_from_bld_dir_path = os.path.join(BUILD_DIR,
-                                              qemu_bin_relative_path)
-    if is_readable_executable_file(qemu_bin_from_bld_dir_path):
-        return qemu_bin_from_bld_dir_path
+    qemu_bin_name = bin_prefix + arch
+    qemu_bin_paths = [
+        os.path.join(".", qemu_bin_name),
+        os.path.join(BUILD_DIR, qemu_bin_name),
+        os.path.join(BUILD_DIR, "build", qemu_bin_name),
+    ]
+    for path in qemu_bin_paths:
+        if is_readable_executable_file(path):
+            return path
     return None
 
 
-- 
2.37.0