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Description: Make boost::system optional, header-only since 1.69, removed in 1.89.
Author: Bas Couwenberg <sebastic@debian.org>
Forwarded: https://github.com/mapnik/mapnik/pull/4550
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -169,7 +169,7 @@ if(CMAKE_CXX_STANDARD VERSION_LESS 17)
set(USE_BOOST_FILESYSTEM ON CACHE BOOL "Use boost::filesystem" FORCE)
endif()
if(USE_BOOST_FILESYSTEM)
- mapnik_find_package(Boost ${BOOST_MIN_VERSION} REQUIRED COMPONENTS filesystem system)
+ mapnik_find_package(Boost ${BOOST_MIN_VERSION} REQUIRED COMPONENTS filesystem OPTIONAL_COMPONENTS system)
endif()
list(APPEND MAPNIK_COMPILE_DEFS BOOST_REGEX_HAS_ICU)
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