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Coroutines not building on Ubuntu 20.04 Focal #196

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#197
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Coroutines not building on Ubuntu 20.04 Focal#196
#197
@doisyg

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@doisyg
doisyg
opened on May 26, 2020

Hi Davide,
Maybe I am the only one using coroutines... but, when building from src on Ubuntu 20.04, the coroutines are not built.
I think it is due to the way Boost_VERSION is recognized there:

BehaviorTree.CPP/CMakeLists.txt

Lines 17 to 30 in 561f4fa

find_package(Boost COMPONENTS coroutine QUIET)
if(Boost_FOUND)
include_directories(${Boost_INCLUDE_DIRS})
if(NOT Boost_VERSION VERSION_LESS 105900)
message(STATUS "Found boost::coroutine2.")
add_definitions(-DBT_BOOST_COROUTINE2)
set(BT_COROUTINES true)
elseif(NOT Boost_VERSION VERSION_LESS 105300)
message(STATUS "Found boost::coroutine.")
include_directories(${Boost_INCLUDE_DIRS})
add_definitions(-DBT_BOOST_COROUTINE)
set(BT_COROUTINES true)
endif()
endif()

if I add message(STATUS "BOOST version: " ${Boost_VERSION}), I get 106501 in ubuntu 18.04 and 1.71.0 in ubuntu 20.04

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