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cmake: avoid problems from use of CMAKE_USE_PTHREADS_INIT

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In some CMake integrations, portions of the toolchain may end up
defining CMAKE_USE_PTHREADS_INIT even when EVENT__DISABLE_THREAD_SUPPORT
is set for libevent.  Modify the build to not rely on this side effect
of find_package(Threads, ...) [which could be done elsewhere] but instead
to use EVENT__HAVE_PTHREADS which is defined only on the desired codepath.

Without this change, affected builds fail as a result of event_pthreads source
files being built but with build defines which cause the build to fail.

Signed-off-by: Paul Osborne <paul.osborne@smartthings.com>
(cherry picked from commit 26d5ff457c9e6cf9b84ec9d8fb83d87caf083d96)
This commit is contained in:
Paul Osborne 2020-06-18 15:47:14 +00:00 committed by Azat Khuzhin
parent fb5fa12ac0
commit a62ec76561
1 changed files with 2 additions and 2 deletions
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4
CMakeLists.txt
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@ -960,7 +960,7 @@ if (NOT EVENT__DISABLE_OPENSSL)
SOURCES ${SRC_OPENSSL})
endif()
if (CMAKE_USE_PTHREADS_INIT)
if (EVENT__HAVE_PTHREADS)
set(SRC_PTHREADS evthread_pthread.c)
add_event_library(event_pthreads
INNER_LIBRARIES event_core
@ -1130,7 +1130,7 @@ if (NOT EVENT__DISABLE_TESTS)
if (NOT EVENT__DISABLE_THREAD_SUPPORT)
list(APPEND SRC_REGRESS test/regress_thread.c)
endif()
elseif (CMAKE_USE_PTHREADS_INIT)
elseif (EVENT__HAVE_PTHREADS)
list(APPEND SRC_REGRESS test/regress_thread.c)
endif()