From d445ef94bea53d97133a44b7ec81818cddde9442 Mon Sep 17 00:00:00 2001
From: Kambiz Darabi <darabi@m-creations.net>
Date: Tue, 25 Jul 2023 10:53:45 +0200
Subject: [PATCH] ENH: allow build of extensions which depend on this one

The unconditional use of find_package leads to an error
during the build process of dependent extensions. See

https://discourse.slicer.org/t/30698
---
 CMakeLists.txt | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2b27cca..494be3d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,8 +24,12 @@ project(SegmentRegistration)
 find_package(Slicer REQUIRED)
 include(${Slicer_USE_FILE})
 
-find_package(SlicerProstate REQUIRED)
-find_package(SlicerRT REQUIRED)
+if (NOT DEFINED Slicer_EXTENSION_SOURCE_DIRS)
+  find_package(SlicerProstate REQUIRED)
+  find_package(SlicerRT REQUIRED)
+else()
+  # Allow usage if dependent extension is bundled
+endif()
 
 set(DEPENDENCY_BUILD_DIRS "")
 if(CMAKE_CONFIGURATION_TYPES)