From db7e9ca4bdf976ca56c5e83bdabf09d0abbe98b1 Mon Sep 17 00:00:00 2001
From: Francis Dupont <fdupont@isc.org>
Date: Tue, 11 Mar 2025 13:03:00 +0100
Subject: [PATCH] [#3731] Added system vs boost regex.h check

---
 compiler-checks/boost-regex.cc |  8 ++++++++
 meson.build                    | 11 +++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 compiler-checks/boost-regex.cc

diff --git a/compiler-checks/boost-regex.cc b/compiler-checks/boost-regex.cc
new file mode 100644
index 0000000000..0f7eb87b63
--- /dev/null
+++ b/compiler-checks/boost-regex.cc
@@ -0,0 +1,8 @@
+#include <regex.h>
+#ifdef BOOST_RE_REGEX_H
+#error "boost/regex.h"
+#endif
+
+int main() {
+    return 0;
+}
diff --git a/meson.build b/meson.build
index b06443f90f..eb1116a1ff 100644
--- a/meson.build
+++ b/meson.build
@@ -254,6 +254,17 @@ conf_data.set('HAVE_PGSQL', POSTGRESQL_DEP.found())
 
 #### Compiler Checks
 
+if cpp.has_header('boost/regex.h', dependencies: [boost_dep], required: false)
+    result = cpp.run(
+        fs.read('compiler-checks/boost-regex.cc'),
+        dependencies: [boost_dep],
+        name: 'GET_SYSTEM_VS_BOOST_REGEX_HEADER',
+    )
+    if result.returncode() != 0
+        error('boost/regex.h is used in place of system regex.h')
+    endif
+endif
+
 result = cpp.run(
     fs.read('compiler-checks/chrono-same-duration.cc'),
     name: 'CHRONO_SAME_DURATION',