From 536a581d9eb9067b2c959ca95e98bdef5d740a25 Mon Sep 17 00:00:00 2001
From: Todor Prokopov <koprok@gmail.com>
Date: Mon, 21 Nov 2022 16:56:52 +0200
Subject: [PATCH] Install CMake export

---
 CMakeLists.txt         |  2 ++
 backend/CMakeLists.txt | 19 +++++++++++++++++--
 zint-config.cmake.in   |  5 +++++
 3 files changed, 24 insertions(+), 2 deletions(-)
 create mode 100644 zint-config.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 246dd646..e01905ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -192,6 +192,8 @@ else()
 endif()
 
 install(FILES cmake/modules/FindZint.cmake DESTINATION ${CMAKE_MODULES_INSTALL_PATH} COMPONENT Devel)
+configure_file("zint-config.cmake.in" "zint-config.cmake" @ONLY)
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/zint-config.cmake" DESTINATION "${SHARE_INSTALL_PREFIX}/zint")
 
 # This needs to be run very last so other parts of the scripts can take
 # advantage of this.
diff --git a/backend/CMakeLists.txt b/backend/CMakeLists.txt
index 184e89a0..7a365f69 100644
--- a/backend/CMakeLists.txt
+++ b/backend/CMakeLists.txt
@@ -48,6 +48,15 @@ function(zint_target_compile_definitions scope definition)
     endif()
 endfunction()
 
+function(zint_target_include_directories scope directory)
+    if(ZINT_SHARED)
+        target_include_directories(zint ${scope} ${directory})
+    endif()
+    if(ZINT_STATIC)
+        target_include_directories(zint-static ${scope} ${directory})
+    endif()
+endfunction()
+
 if(ZINT_SHARED)
     set_target_properties(zint PROPERTIES   SOVERSION "${ZINT_VERSION_MAJOR}.${ZINT_VERSION_MINOR}"
                                             VERSION ${ZINT_VERSION})
@@ -76,12 +85,18 @@ if(MSVC)
     target_compile_definitions(zint PRIVATE DLL_EXPORT)
 endif()
 
+zint_target_include_directories(PUBLIC
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+    $<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>
+)
+
 if(ZINT_SHARED)
-    install(TARGETS zint ${INSTALL_TARGETS_DEFAULT_ARGS})
+    install(TARGETS zint EXPORT zint-targets ${INSTALL_TARGETS_DEFAULT_ARGS})
 endif()
 if(ZINT_STATIC)
-    install(TARGETS zint-static ${INSTALL_TARGETS_DEFAULT_ARGS})
+    install(TARGETS zint-static EXPORT zint-targets ${INSTALL_TARGETS_DEFAULT_ARGS})
 endif()
+install(EXPORT zint-targets NAMESPACE zint:: DESTINATION "${SHARE_INSTALL_PREFIX}/zint")
 install(FILES zint.h DESTINATION ${INCLUDE_INSTALL_DIR} COMPONENT Devel)
 
 if(ZINT_TEST)
diff --git a/zint-config.cmake.in b/zint-config.cmake.in
new file mode 100644
index 00000000..0ad7a579
--- /dev/null
+++ b/zint-config.cmake.in
@@ -0,0 +1,5 @@
+if(@ZINT_USE_PNG@)
+    include(CMakeFindDependencyMacro)
+    find_dependency(PNG)
+endif()
+include("${CMAKE_CURRENT_LIST_DIR}/zint-targets.cmake")