Pyolian: add support EOLIAN_SO_DIR env var

Thanks goes to @lauromoura for proposing this in D5840

2 files changed, 9 insertions, 2 deletions

diff --git a/src/scripts/pyolian/README.md b/src/scripts/pyolian/README.md
index f803077c01..9ec4f20b82 100644
--- a/src/scripts/pyolian/README.md
+++ b/src/scripts/pyolian/README.md
@@ -25,6 +25,10 @@ tree, usually at efl compilation time (before the install step).
 The only requirement is that **the source tree must be already built** (not
 installed) because pyolian search the eolian .so/.dll inside the source tree.
 
+If you built the efl tree in a custom location (fe, you build out-of-tree) you
+can tell pyolian where to find the built eolian .so files using the
+`EOLIAN_SO_DIR` environment variable.
+
 
 Command line usage
 ==================
diff --git a/src/scripts/pyolian/eolian_lib.py b/src/scripts/pyolian/eolian_lib.py
index 99d862a8de..4b792657d2 100644
--- a/src/scripts/pyolian/eolian_lib.py
+++ b/src/scripts/pyolian/eolian_lib.py
@@ -11,10 +11,13 @@ import os
 script_path = os.path.dirname(os.path.realpath(__file__))
 root_path = os.path.abspath(os.path.join(script_path, '..', '..', '..'))
 
-search_in = (
+search_in = [
     os.path.join(root_path, 'src', 'lib', 'eolian', '.libs'),
     os.path.join(root_path, 'build', 'src', 'lib', 'eolian'),
-)
+]
+
+if 'EOLIAN_SO_DIR' in os.environ:
+    search_in.insert(0, os.environ['EOLIAN_SO_DIR'])
 
 search_names = ('libeolian.so', 'eolian.dll')