From a955d2bdeece9a9f4031ea8d52a6e397f66f555e Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Tue, 12 Aug 2025 18:41:48 +0500
Subject: [PATCH] ifcwrap cmake - add hint about missing SWIG_EXECUTABLE

---
 src/ifcwrap/CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ifcwrap/CMakeLists.txt b/src/ifcwrap/CMakeLists.txt
index 3ab27a4e2e..befd8c9ba0 100644
--- a/src/ifcwrap/CMakeLists.txt
+++ b/src/ifcwrap/CMakeLists.txt
@@ -21,7 +21,11 @@ cmake_policy(SET CMP0177 NEW)
 
 FIND_PACKAGE(SWIG)
 IF(NOT SWIG_FOUND)
-	MESSAGE(FATAL_ERROR "BUILD_IFCPYTHON enabled, but unable to find SWIG. Disable BUILD_IFCPYTHON or fix SWIG paths to proceed.")
+	MESSAGE(
+        FATAL_ERROR
+        "BUILD_IFCPYTHON enabled, but unable to find SWIG. Disable BUILD_IFCPYTHON or fix SWIG paths to proceed. "
+        "Likely SWIG_EXECUTABLE is missing (current value - '${SWIG_EXECUTABLE}')."
+    )
 ENDIF()
 include(GNUInstallDirs)
 INCLUDE(${SWIG_USE_FILE})