From e8cfcc7017f9002a229996232fdb2d03a41d7ea7 Mon Sep 17 00:00:00 2001
From: ROUVREAU Vincent <vincent.rouvreau@inria.fr>
Date: Fri, 21 Aug 2020 15:40:17 +0200
Subject: Fix compilation issues when cgal but no eigen

---
 src/Collapse/include/gudhi/Flag_complex_edge_collapser.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/Collapse/include/gudhi/Flag_complex_edge_collapser.h')

diff --git a/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h b/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h
index b6b7f7c1..d3aead70 100644
--- a/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h
+++ b/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h
@@ -18,6 +18,7 @@
 #include <boost/iterator/iterator_facade.hpp>
 
 #include <Eigen/Sparse>
+#include <Eigen/src/Core/util/Macros.h>  // for EIGEN_VERSION_AT_LEAST
 
 #ifdef GUDHI_USE_TBB
 #include <tbb/parallel_sort.h>
@@ -34,6 +35,11 @@
 #include <iterator>  // for std::inserter
 #include <type_traits>  // for std::decay
 
+// Make compilation fail - required for external projects - https://github.com/GUDHI/gudhi-devel/issues/10
+#if !EIGEN_VERSION_AT_LEAST(3,1,0)
+# error Alpha_complex is only available for Eigen3 >= 3.1.0 installed with CGAL
+#endif
+
 namespace Gudhi {
 
 namespace collapse {
-- 
cgit v1.2.3


From f424715caab7609085cf155abd98c88674ec329d Mon Sep 17 00:00:00 2001
From: ROUVREAU Vincent <vincent.rouvreau@inria.fr>
Date: Mon, 24 Aug 2020 09:20:02 +0200
Subject: code review: really bad copy/paste...

---
 src/Collapse/include/gudhi/Flag_complex_edge_collapser.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/Collapse/include/gudhi/Flag_complex_edge_collapser.h')

diff --git a/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h b/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h
index d3aead70..713c6608 100644
--- a/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h
+++ b/src/Collapse/include/gudhi/Flag_complex_edge_collapser.h
@@ -37,7 +37,7 @@
 
 // Make compilation fail - required for external projects - https://github.com/GUDHI/gudhi-devel/issues/10
 #if !EIGEN_VERSION_AT_LEAST(3,1,0)
-# error Alpha_complex is only available for Eigen3 >= 3.1.0 installed with CGAL
+# error Edge Collapse is only available for Eigen3 >= 3.1.0
 #endif
 
 namespace Gudhi {
-- 
cgit v1.2.3