From e57a1fe02ec0eb6f195803021bcb4ae085c0b8bf Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sat, 24 Feb 2024 19:03:23 +0100
Subject: [PATCH] Fixes #12586: FEM requires OpenMP 5.0 (e.g. GCC >= 9)

---
 src/Mod/Fem/App/FemMesh.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/Mod/Fem/App/FemMesh.cpp b/src/Mod/Fem/App/FemMesh.cpp
index 378291c470..008412acb3 100644
--- a/src/Mod/Fem/App/FemMesh.cpp
+++ b/src/Mod/Fem/App/FemMesh.cpp
@@ -910,7 +910,8 @@ std::set<int> FemMesh::getNodesBySolid(const TopoDS_Solid& solid) const
     }
 
 #pragma omp parallel for schedule(dynamic)
-    for (auto aNode : nodes) {
+    for (size_t i = 0; i < nodes.size(); ++i) {
+        const SMDS_MeshNode* aNode = nodes[i];
         double xyz[3];
         aNode->GetXYZ(xyz);
         Base::Vector3d vec(xyz[0], xyz[1], xyz[2]);
@@ -962,7 +963,8 @@ std::set<int> FemMesh::getNodesByFace(const TopoDS_Face& face) const
     }
 
 #pragma omp parallel for schedule(dynamic)
-    for (auto aNode : nodes) {
+    for (size_t i = 0; i < nodes.size(); ++i) {
+        const SMDS_MeshNode* aNode = nodes[i];
         double xyz[3];
         aNode->GetXYZ(xyz);
         Base::Vector3d vec(xyz[0], xyz[1], xyz[2]);
@@ -1012,7 +1014,8 @@ std::set<int> FemMesh::getNodesByEdge(const TopoDS_Edge& edge) const
     }
 
 #pragma omp parallel for schedule(dynamic)
-    for (auto aNode : nodes) {
+    for (size_t i = 0; i < nodes.size(); ++i) {
+        const SMDS_MeshNode* aNode = nodes[i];
         double xyz[3];
         aNode->GetXYZ(xyz);
         Base::Vector3d vec(xyz[0], xyz[1], xyz[2]);
@@ -1061,7 +1064,8 @@ std::set<int> FemMesh::getNodesByVertex(const TopoDS_Vertex& vertex) const
     }
 
 #pragma omp parallel for schedule(dynamic)
-    for (auto aNode : nodes) {
+    for (size_t i = 0; i < nodes.size(); ++i) {
+        const SMDS_MeshNode* aNode = nodes[i];
         double xyz[3];
         aNode->GetXYZ(xyz);
         Base::Vector3d vec(xyz[0], xyz[1], xyz[2]);