git: 61615e178cbd - main - graphics/mapnik: Fix build with gdal 3.12.0+

The branch main has been updated by sunpoet:

URL: https://cgit.FreeBSD.org/ports/commit/?id=61615e178cbd517ff28d81f04000b6a14a2c600a

commit 61615e178cbd517ff28d81f04000b6a14a2c600a
Author:     Po-Chuan Hsieh <sunpoet@FreeBSD.org>
AuthorDate: 2026-04-05 17:17:10 +0000
Commit:     Po-Chuan Hsieh <sunpoet@FreeBSD.org>
CommitDate: 2026-04-05 17:20:03 +0000

    graphics/mapnik: Fix build with gdal 3.12.0+
    
    Obtained from:  https://github.com/mapnik/mapnik/commit/ca60dda74671cb373419b8a8f91b0f730c16f161
---
 graphics/mapnik/files/patch-gdal | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/graphics/mapnik/files/patch-gdal b/graphics/mapnik/files/patch-gdal
new file mode 100644
index 000000000000..e4bbd30edbdc
--- /dev/null
+++ b/graphics/mapnik/files/patch-gdal
@@ -0,0 +1,16 @@
+Obtained from:	https://github.com/mapnik/mapnik/commit/ca60dda74671cb373419b8a8f91b0f730c16f161
+
+--- plugins/input/ogr/ogr_datasource.cpp.orig	2025-10-01 08:04:52 UTC
++++ plugins/input/ogr/ogr_datasource.cpp
+@@ -378,7 +378,11 @@ void ogr_datasource::init(mapnik::parameters const& pa
+         }
+     }
+     mapnik::parameters& extra_params = desc_.get_extra_parameters();
++#if GDAL_VERSION_NUM >= GDAL_COMPUTE_VERSION(3, 12, 0)
++    const OGRSpatialReference* srs_ref = layer->GetSpatialRef();
++#else
+     OGRSpatialReference* srs_ref = layer->GetSpatialRef();
++#endif
+     char* srs_output = nullptr;
+     if (srs_ref && srs_ref->exportToProj4(&srs_output) == OGRERR_NONE)
+     {