gst-env: Don't put helper binaries in PATH

Check if the executable would be installed into bindir before adding
it to PATH in the uninstalled shell.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-build/issues/67

diff --git a/gst-env.py b/gst-env.py
index 2124c9c..a2e139e 100755 (executable)
--- a/gst-env.py
+++ b/gst-env.py
@@ -13,6 +13,7 @@ import sys
 import tempfile
 import pathlib
 import signal
+from pathlib import PurePath
 
 from distutils.sysconfig import get_python_lib
 from distutils.util import strtobool
@@ -96,6 +97,24 @@ def is_library_target_and_not_plugin(target, filename):
         return False
     return True
 
+def is_binary_target_and_in_path(target, filename, bindir):
+    if target['type'] != 'executable':
+        return False
+    if not target['installed']:
+        return False
+    # Check if this file installed by this target is installed to bindir
+    for install_filename in listify(target['install_filename']):
+        if install_filename.endswith(os.path.basename(filename)):
+            break
+    else:
+        # None of the installed files in the target correspond to the built
+        # filename, so skip
+        return False
+    fpath = PurePath(install_filename)
+    if fpath.parent != bindir:
+        return False
+    return True
+
 
 def get_wine_subprocess_env(options, env):
     with open(os.path.join(options.builddir, 'meson-info', 'intro-buildoptions.json')) as f:
@@ -206,10 +225,14 @@ def get_subprocess_env(options, gst_version):
     build_options_s = subprocess.check_output(meson + ['introspect', options.builddir, '--buildoptions'])
     build_options = json.loads(build_options_s.decode())
     libdir, = [o['value'] for o in build_options if o['name'] == 'libdir']
-    libdir = libdir.replace('\\', '/')
+    libdir = PurePath(libdir)
+    prefix, = [o['value'] for o in build_options if o['name'] == 'prefix']
+    bindir, = [o['value'] for o in build_options if o['name'] == 'bindir']
+    prefix = PurePath(prefix)
+    bindir = prefix / bindir
 
     global GSTPLUGIN_FILEPATH_REG_TEMPLATE
-    GSTPLUGIN_FILEPATH_REG_TEMPLATE = GSTPLUGIN_FILEPATH_REG_TEMPLATE.format(libdir=libdir)
+    GSTPLUGIN_FILEPATH_REG_TEMPLATE = GSTPLUGIN_FILEPATH_REG_TEMPLATE.format(libdir=libdir.as_posix())
 
     for target in targets:
         filenames = listify(target['filename'])
@@ -227,7 +250,7 @@ def get_subprocess_env(options, gst_version):
                 prepend_env_var(env, lib_path_envvar,
                                 os.path.join(options.builddir, root),
                                 options.sysroot)
-            elif target['type'] == 'executable' and target['installed']:
+            elif is_binary_target_and_in_path(target, filename, bindir):
                 paths.add(os.path.join(options.builddir, root))
 
     with open(os.path.join(options.builddir, 'GstPluginsPath.json')) as f: