From 30ebb2169c99fd39806b3565c84f88e62958861e Mon Sep 17 00:00:00 2001
From: Sebastian Hahta <joseha@utu.fi>
Date: Mon, 10 Aug 2020 13:22:23 +0300
Subject: [PATCH] include ceres in cpp

---
 .../calibration/include/ftl/calibration/optimize.hpp      | 8 ++++----
 components/calibration/src/optimize.cpp                   | 2 ++
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/components/calibration/include/ftl/calibration/optimize.hpp b/components/calibration/include/ftl/calibration/optimize.hpp
index 2e694cd9d..b05d9f9d3 100644
--- a/components/calibration/include/ftl/calibration/optimize.hpp
+++ b/components/calibration/include/ftl/calibration/optimize.hpp
@@ -9,10 +9,6 @@
 
 #include <ftl/config.h>
 
-#ifdef HAVE_CERES
-#include <ceres/ceres.h>
-#endif
-
 #include <opencv2/core/core.hpp>
 
 // BundleAdjustment uses Point3d instances via double*
@@ -21,6 +17,10 @@ static_assert(std::is_standard_layout<cv::Point2d>());
 static_assert(sizeof(cv::Point3d) == 3*sizeof(double));
 static_assert(std::is_standard_layout<cv::Point3d>());
 
+namespace ceres {
+	struct Problem;
+}
+
 namespace ftl {
 namespace calibration {
 
diff --git a/components/calibration/src/optimize.cpp b/components/calibration/src/optimize.cpp
index a7ff07623..26a28d5c9 100644
--- a/components/calibration/src/optimize.cpp
+++ b/components/calibration/src/optimize.cpp
@@ -1,6 +1,8 @@
 #include "ftl/calibration/optimize.hpp"
 #include "ftl/calibration/parameters.hpp"
 
+#include <ceres/ceres.h>
+
 #include <loguru.hpp>
 
 #include <ftl/exception.hpp>
-- 
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