From 677e0db63649ad2aeb536783eb745c651f2fd5c2 Mon Sep 17 00:00:00 2001
From: Cristian Morales Vega <cristian@samknows.com>
Date: Wed, 25 Nov 2020 12:56:27 +0000
Subject: [PATCH] Install cmake config file

miniupnpc::miniupnpc becomes an ALIAS for the shared library, if
available, and the static library otherwise.
Users of the installed library can use MINIUPNPC_USE_STATIC_LIBS to
force the use of the static library.
---
 miniupnpc/CMakeLists.txt         | 30 +++++++++++++++++++++++++++++-
 miniupnpc/miniupnpc-config.cmake |  6 ++++++
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 miniupnpc/miniupnpc-config.cmake

diff --git a/miniupnpc/CMakeLists.txt b/miniupnpc/CMakeLists.txt
index 64bbac1..5323862 100644
--- a/miniupnpc/CMakeLists.txt
+++ b/miniupnpc/CMakeLists.txt
@@ -53,7 +53,7 @@ if (MSVC)
 endif()
 
 configure_file (${CMAKE_CURRENT_SOURCE_DIR}/miniupnpcstrings.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/miniupnpcstrings.h)
-target_include_directories(miniupnpc-private INTERFACE ${CMAKE_CURRENT_BINARY_DIR})
+target_include_directories(miniupnpc-private INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
 
 set (MINIUPNPC_SOURCES
   igd_desc_parse.c
@@ -112,19 +112,35 @@ endif ()
 
 if (UPNPC_BUILD_STATIC)
   add_library (libminiupnpc-static STATIC ${MINIUPNPC_SOURCES})
+  if (NOT UPNPC_BUILD_SHARED)
+    add_library (miniupnpc::miniupnpc ALIAS libminiupnpc-static)
+  endif()
+  set_target_properties (libminiupnpc-static PROPERTIES EXPORT_NAME miniupnpc)
   if (WIN32)
     set_target_properties (libminiupnpc-static PROPERTIES OUTPUT_NAME "libminiupnpc")
   else()
     set_target_properties (libminiupnpc-static PROPERTIES OUTPUT_NAME "miniupnpc")
   endif()
   target_link_libraries (libminiupnpc-static PRIVATE miniupnpc-private)
+  target_include_directories(libminiupnpc-static INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
   target_compile_definitions(libminiupnpc-static PUBLIC MINIUPNP_STATICLIB)
 
   if (NOT UPNPC_NO_INSTALL)
+    install (TARGETS miniupnpc-private EXPORT miniupnpc-private)
+
+    install (EXPORT miniupnpc-private
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/miniupnpc"
+      NAMESPACE miniupnpc::)
+
     install (TARGETS libminiupnpc-static
+      EXPORT libminiupnpc-static
       RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
       LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
       ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+    install (EXPORT libminiupnpc-static
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/miniupnpc"
+      NAMESPACE miniupnpc::)
   endif()
 
   if (UPNPC_BUILD_SAMPLE)
@@ -136,21 +152,29 @@ endif ()
 
 if (UPNPC_BUILD_SHARED)
   add_library (libminiupnpc-shared SHARED ${MINIUPNPC_SOURCES})
+  add_library (miniupnpc::miniupnpc ALIAS libminiupnpc-shared)
+  set_target_properties (libminiupnpc-shared PROPERTIES EXPORT_NAME miniupnpc)
   set_target_properties (libminiupnpc-shared PROPERTIES OUTPUT_NAME "miniupnpc")
   set_target_properties (libminiupnpc-shared PROPERTIES VERSION ${MINIUPNPC_VERSION})
   set_target_properties (libminiupnpc-shared PROPERTIES SOVERSION ${MINIUPNPC_API_VERSION})
   target_link_libraries (libminiupnpc-shared PRIVATE miniupnpc-private)
   target_compile_definitions(libminiupnpc-shared PRIVATE MINIUPNP_EXPORTS)
 
+  target_include_directories(libminiupnpc-shared INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
   if (WIN32)
     target_link_libraries(libminiupnpc-shared INTERFACE ws2_32 iphlpapi)
   endif()
 
   if (NOT UPNPC_NO_INSTALL)
     install (TARGETS libminiupnpc-shared
+      EXPORT libminiupnpc-shared
       RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
       LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
       ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+    install (EXPORT libminiupnpc-shared
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/miniupnpc"
+      NAMESPACE miniupnpc::)
   endif()
 
   if (UPNPC_BUILD_SAMPLE)
@@ -215,6 +239,10 @@ if (NOT UPNPC_NO_INSTALL)
     miniupnpc_declspec.h
     DESTINATION include/miniupnpc
   )
+
+  install(FILES miniupnpc-config.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/miniupnpc
+  )
 endif()
 
 # vim: ts=2:sw=2
diff --git a/miniupnpc/miniupnpc-config.cmake b/miniupnpc/miniupnpc-config.cmake
new file mode 100644
index 0000000..116876a
--- /dev/null
+++ b/miniupnpc/miniupnpc-config.cmake
@@ -0,0 +1,6 @@
+if(NOT EXISTS "${CMAKE_CURRENT_LIST_DIR}/libminiupnpc-shared.cmake" OR MINIUPNPC_USE_STATIC_LIBS)
+  include("${CMAKE_CURRENT_LIST_DIR}/miniupnpc-private.cmake")
+  include("${CMAKE_CURRENT_LIST_DIR}/libminiupnpc-static.cmake")
+else()
+  include("${CMAKE_CURRENT_LIST_DIR}/libminiupnpc-shared.cmake")
+endif()