Update IrrlichtMt-related stuff in README

[minetest.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31e914c768801ebcbd86bfe7ac8f397aa140d0da..fe508ffdbecdddf291ad1eb68728ecbc5aeaa0c8 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,5 @@
 cmake_minimum_required(VERSION 3.5)
 
-cmake_policy(SET CMP0025 OLD)
-
 # This can be read from ${PROJECT_NAME} after project() is called
 project(minetest)
 set(PROJECT_NAME_CAPITALIZED "Minetest")
@@ -60,7 +58,37 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
 
 
 # This is done here so that relative search paths are more reasonable
-find_package(Irrlicht)
+if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/lib/irrlichtmt")
+       message(STATUS "Using user-provided IrrlichtMt at subdirectory 'lib/irrlichtmt'")
+       # tell IrrlichtMt to create a static library
+       set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared library" FORCE)
+       add_subdirectory(lib/irrlichtmt EXCLUDE_FROM_ALL)
+       unset(BUILD_SHARED_LIBS CACHE)
+
+       if(NOT TARGET IrrlichtMt)
+               message(FATAL_ERROR "IrrlichtMt project is missing a CMake target?!")
+       endif()
+else()
+       find_package(IrrlichtMt QUIET)
+       if(NOT TARGET IrrlichtMt::IrrlichtMt)
+               string(CONCAT explanation_msg
+                       "The Minetest team has forked Irrlicht to make their own customizations. "
+                       "It can be found here: https://github.com/minetest/irrlicht")
+               if(BUILD_CLIENT)
+                       message(FATAL_ERROR "IrrlichtMt is required to build the client, but it was not found.\n${explanation_msg}")
+               endif()
+
+               include(MinetestFindIrrlichtHeaders)
+               if(NOT IRRLICHT_INCLUDE_DIR)
+                       message(FATAL_ERROR "Irrlicht or IrrlichtMt headers are required to build the server, but none found.\n${explanation_msg}")
+               endif()
+               message(STATUS "Found Irrlicht headers: ${IRRLICHT_INCLUDE_DIR}")
+               add_library(IrrlichtMt::IrrlichtMt INTERFACE IMPORTED)
+               target_include_directories(IrrlichtMt::IrrlichtMt INTERFACE "${IRRLICHT_INCLUDE_DIR}")
+       else()
+               message(STATUS "Found IrrlichtMt ${IrrlichtMt_VERSION}")
+       endif()
+endif()
 
 
 # Installation
@@ -169,7 +197,6 @@ install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/games/devtest" DESTINATION "${SHA
 if(BUILD_CLIENT)
        install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/client/shaders" DESTINATION "${SHAREDIR}/client")
        install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/textures/base/pack" DESTINATION "${SHAREDIR}/textures/base")
-       install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/fonts" DESTINATION "${SHAREDIR}")
        if(RUN_IN_PLACE)
                install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/clientmods" DESTINATION "${SHAREDIR}")
                install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/client/serverlist" DESTINATION "${SHAREDIR}/client")
@@ -214,7 +241,7 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
                message(FATAL_ERROR "Insufficient gcc version, found ${CMAKE_CXX_COMPILER_VERSION}. "
                        "Version ${GCC_MINIMUM_VERSION} or higher is required.")
        endif()
-elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+elseif(CMAKE_CXX_COMPILER_ID MATCHES "(Apple)?Clang")
        if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "${CLANG_MINIMUM_VERSION}")
                message(FATAL_ERROR "Insufficient clang version, found ${CMAKE_CXX_COMPILER_VERSION}. "
                        "Version ${CLANG_MINIMUM_VERSION} or higher is required.")