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Add variable to use existing IrrlichtMt build (#11656) 

Co-authored-by: SmallJoker <SmallJoker@users.noreply.github.com>
This commit is contained in:
JosiahWI 2021-10-31 17:33:11 -05:00 committed by GitHub
parent 0b95da7ad3
commit 38ba813c55
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2 changed files with 25 additions and 8 deletions
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22
CMakeLists.txt
View File

@ -52,7 +52,6 @@ set(BUILD_CLIENT TRUE CACHE BOOL "Build client")
set(BUILD_SERVER FALSE CACHE BOOL "Build server")
set(BUILD_UNITTESTS TRUE CACHE BOOL "Build unittests")
set(WARN_ALL TRUE CACHE BOOL "Enable -Wall for Release build")
if(NOT CMAKE_BUILD_TYPE)
@ -64,8 +63,21 @@ endif()
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
set(IRRLICHTMT_BUILD_DIR "" CACHE PATH "Path to IrrlichtMt build directory.")
if(NOT "${IRRLICHTMT_BUILD_DIR}" STREQUAL "")
find_package(IrrlichtMt QUIET
PATHS "${IRRLICHTMT_BUILD_DIR}"
NO_DEFAULT_PATH
)
if(NOT TARGET IrrlichtMt::IrrlichtMt)
# find_package() searches certain subdirectories. ${PATH}/cmake is not
# the only one, but it is the one where IrrlichtMt is supposed to export
# IrrlichtMtConfig.cmake
message(FATAL_ERROR "Could not find IrrlichtMtConfig.cmake in ${IRRLICHTMT_BUILD_DIR}/cmake.")
endif()
# This is done here so that relative search paths are more reasonable
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/lib/irrlichtmt")
elseif(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/lib/irrlichtmt")
message(STATUS "Using user-provided IrrlichtMt at subdirectory 'lib/irrlichtmt'")
if(BUILD_CLIENT)
# tell IrrlichtMt to create a static library
@ -101,11 +113,13 @@ else()
# Note that we can't use target_include_directories() since that doesn't work for IMPORTED targets before CMake 3.11
set_target_properties(IrrlichtMt::IrrlichtMt PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${IRRLICHT_INCLUDE_DIR}")
else()
message(STATUS "Found IrrlichtMt ${IrrlichtMt_VERSION}")
endif()
endif()
if(TARGET IrrlichtMt::IrrlichtMt)
message(STATUS "Found IrrlichtMt ${IrrlichtMt_VERSION}")
endif()
# Installation

11
README.md
View File

@ -224,10 +224,13 @@ Run it:
- Debug build is slower, but gives much more useful output in a debugger.
- If you build a bare server you don't need to have the Irrlicht or IrrlichtMt library installed.
- In that case use `-DIRRLICHT_INCLUDE_DIR=/some/where/irrlicht/include`.
- IrrlichtMt can also be installed somewhere that is not a standard install path.
- In that case use `-DCMAKE_PREFIX_PATH=/path/to/install_prefix`
- The path must be set so that `$(CMAKE_PREFIX_PATH)/lib/cmake/IrrlichtMt` exists
or that `$(CMAKE_PREFIX_PATH)` is the path of an IrrlichtMt build folder.
- Minetest will use the IrrlichtMt package that is found first, given by the following order:
1. Specified `IRRLICHTMT_BUILD_DIR` CMake variable
2. `${PROJECT_SOURCE_DIR}/lib/irrlichtmt` (if existent)
3. Installation of IrrlichtMt in the system-specific library paths
4. For server builds with disabled `BUILD_CLIENT` variable, the headers from `IRRLICHT_INCLUDE_DIR` will be used.
- NOTE: Changing the IrrlichtMt build directory (includes system installs) requires regenerating the CMake cache (`rm CMakeCache.txt`)
### CMake options