mckaygerhard 4c3adcf77c Fix find_path for newer jsoncpp installations
* Could NOT find JSONCPP (missing: JSON_INCLUDE_DIR)
  fixed https://github.com/minetest/minetest/issues/9119
* imported from https://github.com/minetest/minetest/pull/9120
  The upstream JsonCpp project has renamed the json/features.h file to
  json/json_features.h. This patch fixes the JsonCpp installation search
  by looking for json/allocator.h which has not been renamed on newer
  versions of JsonCpp.
2023-09-12 20:01:56 -04:00

31 lines
1.1 KiB
CMake

# Look for JSONCPP if asked to.
# We use a bundled version by default because some distros ship versions of
# JSONCPP that cause segfaults and other memory errors when we link with them.
# See https://github.com/minetest/minetest/issues/1793
mark_as_advanced(JSON_LIBRARY JSON_INCLUDE_DIR)
option(ENABLE_SYSTEM_JSONCPP "Enable using a system-wide JSONCPP. May cause segfaults and other memory errors!" FALSE)
if(ENABLE_SYSTEM_JSONCPP)
find_library(JSON_LIBRARY NAMES jsoncpp)
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5)
find_path(JSON_INCLUDE_DIR json/features.h PATH_SUFFIXES jsoncpp)
else()
find_path(JSON_INCLUDE_DIR json/allocator.h PATH_SUFFIXES jsoncpp)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Json DEFAULT_MSG JSON_LIBRARY JSON_INCLUDE_DIR)
if(JSON_FOUND)
message(STATUS "Using system JSONCPP library.")
endif()
endif()
if(NOT JSON_FOUND)
message(STATUS "Using bundled JSONCPP library.")
set(JSON_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/jsoncpp)
set(JSON_LIBRARY jsoncpp)
add_subdirectory(lib/jsoncpp)
endif()