From e2f4e926b2f5ef2419dad8a3a5a5fc73fa3b5937 Mon Sep 17 00:00:00 2001
From: Jussi Pakkanen <jpakkane@gmail.com>
Date: Mon, 25 Mar 2019 23:42:58 +0200
Subject: Reduce absolute paths to a deprecation. Closes #5050.

---
 mesonbuild/interpreter.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index 654f6272f..c17298e16 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -612,7 +612,7 @@ class Headers(InterpreterObject):
         self.sources = sources
         self.install_subdir = kwargs.get('subdir', '')
         if os.path.isabs(self.install_subdir):
-            raise InterpreterException('Subdir keyword must not be an absolute path.')
+            mlog.deprecation('Subdir keyword must not be an absolute path. This will be a hard error in the next release.')
         self.custom_install_dir = kwargs.get('install_dir', None)
         self.custom_install_mode = kwargs.get('install_mode', None)
         if self.custom_install_dir is not None:
-- 
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