From d4ebf3f30875ac391bd262dc469933c64dae5ae1 Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Fri, 6 Feb 2026 15:02:31 +0000
Subject: [PATCH] cmake - error if `svgpp` submodule is not initialized

---
 src/svgfill/CMakeLists.txt | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/svgfill/CMakeLists.txt b/src/svgfill/CMakeLists.txt
index f2f8c1a062..0d9764013a 100644
--- a/src/svgfill/CMakeLists.txt
+++ b/src/svgfill/CMakeLists.txt
@@ -36,7 +36,14 @@ message(STATUS "Boost include files found in ${Boost_INCLUDE_DIRS}")
 find_package(LibXml2 REQUIRED)
 find_package(CGAL REQUIRED)
 
-include_directories(${Boost_INCLUDE_DIRS} ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/svgpp/include)
+set(SVGPP_INCLUDE "${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/svgpp/include")
+if(NOT EXISTS ${SVGPP_INCLUDE})
+    message(
+        FATAL_ERROR
+        "Missing svgpp include path, probably you forgot to initialize submodules in git repo. Missing path - '${SVGPP_INCLUDE}'."
+    )
+endif()
+include_directories(${Boost_INCLUDE_DIRS} ${SVGPP_INCLUDE})
 
 file(GLOB LIB_H_FILES src/*.h)
 file(GLOB LIB_CPP_FILES src/svgfill.cpp src/arrange_polygons.cpp)