From 1dc8cdaa72b62232a69de8424e488c910ee58d21 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AE=8B=E6=96=87=E6=AD=A6?= <iyzsong@member.fsf.org>
Date: Tue, 29 Aug 2023 22:06:02 +0800
Subject: [PATCH] gnu: vtk-7: Fix build.

* gnu/packages/patches/vtk-7-gcc-11-compat.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/image-processing.scm (vtk-7)[source]: Add patch for gcc-11.
---
 gnu/local.mk                                   |  1 +
 gnu/packages/image-processing.scm              |  3 ++-
 gnu/packages/patches/vtk-7-gcc-11-compat.patch | 11 +++++++++++
 3 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 gnu/packages/patches/vtk-7-gcc-11-compat.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 48187d7e64c..9b493df8d52 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -2085,6 +2085,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/vte-CVE-2012-2738-pt1.patch			\
   %D%/packages/patches/vte-CVE-2012-2738-pt2.patch			\
   %D%/packages/patches/vtk-7-gcc-10-compat.patch		\
+  %D%/packages/patches/vtk-7-gcc-11-compat.patch		\
   %D%/packages/patches/vtk-7-hdf5-compat.patch			\
   %D%/packages/patches/vtk-7-python-compat.patch		\
   %D%/packages/patches/wacomtablet-add-missing-includes.patch	\
diff --git a/gnu/packages/image-processing.scm b/gnu/packages/image-processing.scm
index 4c7e97f85b9..8fc93a8842d 100644
--- a/gnu/packages/image-processing.scm
+++ b/gnu/packages/image-processing.scm
@@ -473,7 +473,8 @@ integrates with various databases on GUI toolkits such as Qt and Tk.")
                 "0nm7xwwj7rnsxjdv2ssviys8nhci4n9iiiqm2y14s520hl2dsp1d"))
               (patches (search-patches "vtk-7-python-compat.patch"
                                        "vtk-7-hdf5-compat.patch"
-                                       "vtk-7-gcc-10-compat.patch"))))
+                                       "vtk-7-gcc-10-compat.patch"
+                                       "vtk-7-gcc-11-compat.patch"))))
     (arguments
      (substitute-keyword-arguments (package-arguments vtk)
        ((#:configure-flags flags)
diff --git a/gnu/packages/patches/vtk-7-gcc-11-compat.patch b/gnu/packages/patches/vtk-7-gcc-11-compat.patch
new file mode 100644
index 00000000000..c7ab3af36e5
--- /dev/null
+++ b/gnu/packages/patches/vtk-7-gcc-11-compat.patch
@@ -0,0 +1,11 @@
+Description: GCC 11 now enforces that comparison objects be invocable as const.
+--- a/Rendering/Label/vtkLabelHierarchy.cxx
++++ b/Rendering/Label/vtkLabelHierarchy.cxx
+@@ -525,1 +525,1 @@
+-                    const vtkHierarchyNode & b)
++                    const vtkHierarchyNode & b) const
+--- a/Rendering/Label/vtkLabelHierarchyPrivate.h
++++ b/Rendering/Label/vtkLabelHierarchyPrivate.h
+@@ -66,1 +66,1 @@
+-    bool operator () ( const vtkIdType& a, const vtkIdType& b )
++    bool operator () ( const vtkIdType& a, const vtkIdType& b ) const