From b91c469103551d9f9c6943a4e4a80a9f85bcf9b1 Mon Sep 17 00:00:00 2001
From: Ivan Mincik <ivan.mincik@gmail.com>
Date: Sun, 7 Jan 2024 18:22:06 +0100
Subject: [PATCH] mapserver: fix build with libxml2 2.12

---
 pkgs/servers/geospatial/mapserver/default.nix |  5 +++
 .../mapserver/fix-build-w-libxml2-12.patch    | 39 +++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 pkgs/servers/geospatial/mapserver/fix-build-w-libxml2-12.patch

diff --git a/pkgs/servers/geospatial/mapserver/default.nix b/pkgs/servers/geospatial/mapserver/default.nix
index c46aa3d48d0d..922f0864b841 100644
--- a/pkgs/servers/geospatial/mapserver/default.nix
+++ b/pkgs/servers/geospatial/mapserver/default.nix
@@ -15,6 +15,11 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-fAf4kOe/6bQW0i46+EZbD/6iWI2Bjkn2no6XeR/+mg4=";
   };
 
+  patches = [
+    # drop this patch for version 8.0.2
+    ./fix-build-w-libxml2-12.patch
+  ];
+
   nativeBuildInputs = [
     cmake
     pkg-config
diff --git a/pkgs/servers/geospatial/mapserver/fix-build-w-libxml2-12.patch b/pkgs/servers/geospatial/mapserver/fix-build-w-libxml2-12.patch
new file mode 100644
index 000000000000..e33a7f7bc44c
--- /dev/null
+++ b/pkgs/servers/geospatial/mapserver/fix-build-w-libxml2-12.patch
@@ -0,0 +1,39 @@
+diff --git a/mapows.c b/mapows.c
+index f141a7b..5a94ecb 100644
+--- a/mapows.c
++++ b/mapows.c
+@@ -168,7 +168,7 @@ static int msOWSPreParseRequest(cgiRequestObj *request,
+ #endif
+     if (ows_request->document == NULL
+         || (root = xmlDocGetRootElement(ows_request->document)) == NULL) {
+-      xmlErrorPtr error = xmlGetLastError();
++      const xmlError *error = xmlGetLastError();
+       msSetError(MS_OWSERR, "XML parsing error: %s",
+                  "msOWSPreParseRequest()", error->message);
+       return MS_FAILURE;
+diff --git a/mapwcs.cpp b/mapwcs.cpp
+index 70e63b8..19afa79 100644
+--- a/mapwcs.cpp
++++ b/mapwcs.cpp
+@@ -362,7 +362,7 @@ static int msWCSParseRequest(cgiRequestObj *request, wcsParamsObj *params, mapOb
+     /* parse to DOM-Structure and get root element */
+     if((doc = xmlParseMemory(request->postrequest, strlen(request->postrequest)))
+         == NULL) {
+-      xmlErrorPtr error = xmlGetLastError();
++      const xmlError *error = xmlGetLastError();
+       msSetError(MS_WCSERR, "XML parsing error: %s",
+                  "msWCSParseRequest()", error->message);
+       return MS_FAILURE;
+diff --git a/mapwcs20.cpp b/mapwcs20.cpp
+index b35e803..2431bdc 100644
+--- a/mapwcs20.cpp
++++ b/mapwcs20.cpp
+@@ -1446,7 +1446,7 @@ int msWCSParseRequest20(mapObj *map,
+ 
+     /* parse to DOM-Structure and get root element */
+     if(doc == NULL) {
+-      xmlErrorPtr error = xmlGetLastError();
++      const xmlError *error = xmlGetLastError();
+       msSetError(MS_WCSERR, "XML parsing error: %s",
+                  "msWCSParseRequest20()", error->message);
+       return MS_FAILURE;