python3-matplotlib: Fix build with c++17

Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 59 insertions, 0 deletions

diff --git a/meta-python/recipes-devtools/python/python3-matplotlib/0001-removed-RandomNumberGenerator-class-included-random-.patch b/meta-python/recipes-devtools/python/python3-matplotlib/0001-removed-RandomNumberGenerator-class-included-random-.patch
new file mode 100644
index 0000000000..1f9b8cdeaf
--- /dev/null
+++ b/meta-python/recipes-devtools/python/python3-matplotlib/0001-removed-RandomNumberGenerator-class-included-random-.patch
@@ -0,0 +1,59 @@
+From 3eb9987b02cc10b93e09219ddc86aa6be5f10177 Mon Sep 17 00:00:00 2001
+From: tybeller <ty.c.beller@gmail.com>
+Date: Fri, 30 Sep 2022 16:13:41 -0400
+Subject: [PATCH] removed RandomNumberGenerator class, included <random>,
+ replaced random_shuffle with shuffle and used mersenne twister engine to
+ generate uniform random bit generator for the shuffle.
+
+Upstream-Status: Backport [https://github.com/matplotlib/matplotlib/commit/601d92a8850]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/tri/_tri.cpp | 20 ++++----------------
+ 1 file changed, 4 insertions(+), 16 deletions(-)
+
+diff --git a/src/tri/_tri.cpp b/src/tri/_tri.cpp
+index b7a87783de..6e639eea44 100644
+--- a/src/tri/_tri.cpp
++++ b/src/tri/_tri.cpp
+@@ -12,6 +12,7 @@
+ 
+ #include <algorithm>
+ #include <set>
++#include <random>
+ 
+ 
+ TriEdge::TriEdge()
+@@ -1465,8 +1466,8 @@ TrapezoidMapTriFinder::initialize()
+     _tree->assert_valid(false);
+ 
+     // Randomly shuffle all edges other than first 2.
+-    RandomNumberGenerator rng(1234);
+-    std::random_shuffle(_edges.begin()+2, _edges.end(), rng);
++    std::mt19937 rng(1234);
++    std::shuffle(_edges.begin()+2, _edges.end(), rng);
+ 
+     // Add edges, one at a time, to tree.
+     size_t nedges = _edges.size();
+@@ -2055,17 +2056,4 @@ TrapezoidMapTriFinder::Trapezoid::set_upper_right(Trapezoid* upper_right_)
+     upper_right = upper_right_;
+     if (upper_right != 0)
+         upper_right->upper_left = this;
+-}
+-
+-
+-
+-RandomNumberGenerator::RandomNumberGenerator(unsigned long seed)
+-    : _m(21870), _a(1291), _c(4621), _seed(seed % _m)
+-{}
+-
+-unsigned long
+-RandomNumberGenerator::operator()(unsigned long max_value)
+-{
+-    _seed = (_seed*_a + _c) % _m;
+-    return (_seed*max_value) / _m;
+-}
++}
+\ No newline at end of file
+-- 
+2.39.0
+