From 63b2caab2f37a7601b26f299df74320794af6fe3 Mon Sep 17 00:00:00 2001
From: "Juergen E. Fischer" <jef@norbit.de>
Date: Sun, 14 Jul 2024 23:08:35 +0200
Subject: [PATCH] install nlohmann/json_fwd.hpp if using
 WITH_INTERNAL_NLOHMANN_JSON (followup
 c268fb14035678c1a61e7793afe8aaee159094b5)

---
 debian/control.in       | 2 ++
 debian/rules            | 1 +
 src/core/CMakeLists.txt | 4 ++++
 3 files changed, 7 insertions(+)

diff --git a/debian/control.in b/debian/control.in
index 1e37feceb4e1..37c9ecb5658f 100644
--- a/debian/control.in
+++ b/debian/control.in
@@ -37,6 +37,7 @@ Build-Depends:
  libsqlite3-dev,
  libsqlite3-mod-spatialite,
  libzip-dev,
+ nlohmann-json3-dev,
  ninja-build,
  ocl-icd-opencl-dev,
  opencl-headers,
@@ -289,6 +290,7 @@ Depends:
  libqt5webkit5-dev,
  libqwt-qt5-dev,
  libsqlite3-dev,
+ nlohmann-json3-dev,
  pyqt5-dev-tools,
  pyqt5.qsci-dev,
  python3-dev,
diff --git a/debian/rules b/debian/rules
index 71d1645447ec..11f3bd6d05d7 100755
--- a/debian/rules
+++ b/debian/rules
@@ -81,6 +81,7 @@ PYTHON_LIBRARY=$(shell python3-config --ldflags --embed | sed -e 's,-L\(.*\) -L[
 CMAKE_OPTS := \
 	-G Ninja \
 	-DBUILDNAME=$(DEB_BUILD_NAME) \
+	-DWITH_INTERNAL_NLOHMANN_JSON=OFF \
 	-DCMAKE_VERBOSE_MAKEFILE=1 \
 	-DCMAKE_INSTALL_PREFIX=/usr \
 	-DBINDINGS_GLOBAL_INSTALL=TRUE \
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index f12cba892e70..eda085e9570c 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -2420,6 +2420,10 @@ endif()
 
 if(NOT APPLE OR NOT QGIS_MACAPP_FRAMEWORK)
   install(FILES ${QGIS_CORE_HDRS} DESTINATION ${QGIS_INCLUDE_DIR})
+
+  if(WITH_INTERNAL_NLOHMANN_JSON)
+    install(FILES ${CMAKE_SOURCE_DIR}/external/nlohmann/json_fwd.hpp DESTINATION ${QGIS_INCLUDE_DIR}/nlohmann)
+  endif()
 else()
 
   set_target_properties(qgis_core PROPERTIES