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https://issues.apache.org/jira/browse/PROTON-2355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jiri Daněk reopened PROTON-2355:
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This fix fails on CMake 2.8.12 with
{noformat}
-- Building the epoll proactor
CMake Error at c/CMakeLists.txt:467 (add_library):
Unrecognized generator expression:
$<$<TARGET_EXISTS:qpid-proton-proactor-objects>:$<TARGET_OBJECTS:qpid-proton-proactor-objects>>
{noformat}
I checked first in docs that the generator expression is safe to use, but then
I forgot to recheck when I changed it to TARGET_EXISTS :(
https://cmake.org/cmake/help/v2.8.12/cmake.html#command:add_compile_options
> Build failure with -DPROACTOR=none
> ----------------------------------
>
> Key: PROTON-2355
> URL: https://issues.apache.org/jira/browse/PROTON-2355
> Project: Qpid Proton
> Issue Type: Bug
> Components: build
> Affects Versions: proton-c-0.33.0
> Reporter: Fabrice Fontaine
> Assignee: Jiri Daněk
> Priority: Major
> Fix For: proton-c-0.34.0
>
> Attachments: 0001-Fix-build-with-DPROACTOR-none.patch
>
>
> Building with -DPROACTOR=none fails on:
> {code:java}
> CMake Error at c/CMakeLists.txt:481 (add_library):
> Error evaluating generator expression:
> $<TARGET_OBJECTS:qpid-proton-proactor-objects>
> Objects of target "qpid-proton-proactor-objects" referenced but no such
> target exists.
> {code}
> It should also be noted that libqpid-proton-cpp also assumes that a proactor
> is always available (e.g. pn_connection_wake is unconditionally used in
> ./cpp/src/connection.cpp).
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