fix: compiler error when build with C++23 projects on macOS (#485)

NineKa · web-flow · commit 2ccbb7ff8629 · 2026-04-02T09:07:46.000-05:00
diff --git a/source/matplot/util/popen.cpp b/source/matplot/util/popen.cpp
@@ -3,6 +3,7 @@
 #include <array>
 #include <system_error>
 #include <cstring> // strerror
+#include <cstdlib> // exit
 
 #ifdef _WIN32
 
