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-rw-r--r--gnu/packages/image-processing.scm3
-rw-r--r--gnu/packages/patches/vtk-fix-freetypetools-build-failure.patch36
2 files changed, 39 insertions, 0 deletions
diff --git a/gnu/packages/image-processing.scm b/gnu/packages/image-processing.scm
index 5dfd18d1bd..6f4576b8b9 100644
--- a/gnu/packages/image-processing.scm
+++ b/gnu/packages/image-processing.scm
@@ -13,6 +13,7 @@
 ;;; Copyright © 2020 Pierre Neidhardt <mail@ambrevar.xyz>
 ;;; Copyright © 2020 Brendan Tildesley <mail@brendan.scot>
 ;;; Copyright © 2021 Oleh Malyi <astroclubzp@gmail.com>
+;;; Copyright © 2021 Felix Gruber <felgru@posteo.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -254,6 +255,8 @@ many popular formats.")
               (sha256
                (base32
                 "1fspgp8k0myr6p2a6wkc21ldcswb4bvmb484m12mxgk1a9vxrhrl"))
+              (patches
+               (search-patches "vtk-fix-freetypetools-build-failure.patch"))
               (modules '((guix build utils)))
               (snippet
                '(begin
diff --git a/gnu/packages/patches/vtk-fix-freetypetools-build-failure.patch b/gnu/packages/patches/vtk-fix-freetypetools-build-failure.patch
new file mode 100644
index 0000000000..6988e65872
--- /dev/null
+++ b/gnu/packages/patches/vtk-fix-freetypetools-build-failure.patch
@@ -0,0 +1,36 @@
+This fixes a build failure in VTK when building against recent versions
+of freetype.
+
+  https://gitlab.kitware.com/vtk/vtk/-/merge_requests/7432
+
+Patch by Ben Boeckel <ben.boeckel@kitware.com>
+
+Subject: [PATCH] vtkFreeTypeTools: avoid using an internal macro
+
+This macro has been removed upstream as it was always intended to be
+private.
+---
+ Rendering/FreeType/vtkFreeTypeTools.cxx | 7 ++-----
+ 1 file changed, 2 insertions(+), 5 deletions(-)
+
+diff --git a/Rendering/FreeType/vtkFreeTypeTools.cxx b/Rendering/FreeType/vtkFreeTypeTools.cxx
+index c54289dc60..03b899c4da 100644
+--- a/Rendering/FreeType/vtkFreeTypeTools.cxx
++++ b/Rendering/FreeType/vtkFreeTypeTools.cxx
+@@ -387,11 +387,8 @@ FTC_CMapCache* vtkFreeTypeTools::GetCMapCache()
+ }
+ 
+ //----------------------------------------------------------------------------
+-FT_CALLBACK_DEF(FT_Error)
+-vtkFreeTypeToolsFaceRequester(FTC_FaceID face_id,
+-                              FT_Library lib,
+-                              FT_Pointer request_data,
+-                              FT_Face* face)
++static FT_Error vtkFreeTypeToolsFaceRequester(
++  FTC_FaceID face_id, FT_Library lib, FT_Pointer request_data, FT_Face* face)
+ {
+ #if VTK_FTFC_DEBUG_CD
+   printf("vtkFreeTypeToolsFaceRequester()\n");
+-- 
+2.30.1
+