From 25f71596ec323bfc56d3e5681e749994631f0bef Mon Sep 17 00:00:00 2001
From: Paul-Edouard Sarlin <15985472+sarlinpe@users.noreply.github.com>
Date: Tue, 26 Nov 2024 12:38:34 +0100
Subject: [PATCH] Prevent double initialization of glog for <=0.5 (#59)

---
 _pyceres/logging.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/_pyceres/logging.h b/_pyceres/logging.h
index 3b8d53a..5dd92fa 100644
--- a/_pyceres/logging.h
+++ b/_pyceres/logging.h
@@ -219,9 +219,13 @@ void BindLogging(py::module& m) {
       .value("ERROR", Logging::LogSeverity::GLOG_ERROR)
       .value("FATAL", Logging::LogSeverity::GLOG_FATAL)
       .export_values();
+
 #if defined(GLOG_VERSION_MAJOR) && \
     (GLOG_VERSION_MAJOR > 0 || GLOG_VERSION_MINOR >= 6)
   if (!google::IsGoogleLoggingInitialized())
+#else
+  // Check whether pycolmap has already been imported.
+  if (!py::module_::import("sys").attr("modules").contains("pycolmap"))
 #endif
   {
     google::InitGoogleLogging("");