libraries/VTK: Patch for gcc >= 10.x.

Signed-off-by: Matteo Bernardini <ponce@slackbuilds.org>

libraries/VTK/VTK.SlackBuild

@@ -105,6 +105,11 @@ else
   proj=""
 fi
 
+# https://github.com/archlinux/svntogit-community/blob/packages/vtk/trunk/PKGBUILD
+( cd ThirdParty/exodusII/vtkexodusII
+  patch -p1 < $CWD/patch-gcc10.diff )
+sed -i 's|REGEX MATCH \"\[3-9\]|REGEX MATCH \"[1-9][0-9]|' CMake/VTKGenerateExportHeader.cmake
+
 mkdir -p build
 cd build
   cmake \

libraries/VTK/patch-gcc10.diff

@@ -0,0 +1,40 @@
+From a9079bdccbb2165583d6773a5ed848427e2a38a8 Mon Sep 17 00:00:00 2001
+From: Seacas Upstream <kwrobot@kitware.com>
+Date: Tue, 28 Jan 2020 09:13:38 -0500
+Subject: [PATCH] exodusII 2020-01-28 (d97eb08d)
+
+Code extracted from:
+
+    https://gitlab.kitware.com/third-party/seacas.git
+
+at commit d97eb08d79e87c82facfae39bc75deb60c0a2d83 (for/vtk-20200128-7.24f-v2019-12-18).
+---
+ src/ex_create_par.c | 2 +-
+ src/ex_open_par.c   | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/ex_create_par.c b/src/ex_create_par.c
+index 8d5d6734f0..ef439618da 100644
+--- a/src/ex_create_par.c
++++ b/src/ex_create_par.c
+@@ -216,5 +216,5 @@ int ex_create_par_int(const char *path, int cmode, int *comp_ws, int *io_ws, MPI
+  * Prevent warning in some versions of ranlib(1) because the object
+  * file has no symbols.
+  */
+-const char exodus_unused_symbol_dummy_1;
++const char exodus_unused_symbol_dummy_ex_create_par;
+ #endif
+diff --git a/src/ex_open_par.c b/src/ex_open_par.c
+index b2faa22c29..9df4818767 100644
+--- a/src/ex_open_par.c
++++ b/src/ex_open_par.c
+@@ -459,5 +459,5 @@ int ex_open_par_int(const char *path, int mode, int *comp_ws, int *io_ws, float
+  * Prevent warning in some versions of ranlib(1) because the object
+  * file has no symbols.
+  */
+-const char exodus_unused_symbol_dummy_1;
++const char exodus_unused_symbol_dummy_ex_open_par;
+ #endif
+-- 
+GitLab
+