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FindThreads: introduce an imported target to link to 

This not only holds the library, but can also hold compiler flags needed, e.g.
the -pthread flag preferred by gcc on some platforms. There was no clean way
to get that compiler flag from the module until now.
This commit is contained in:
Timo Rothenpieler 2014-10-06 21:36:13 +02:00 committed by Rolf Eike Beer
parent 46368eddfd
commit bcb0e3872b
1 changed files with 18 additions and 0 deletions
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18
Modules/FindThreads.cmake
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@ -14,6 +14,12 @@
# CMAKE_USE_PTHREADS_INIT - are we using pthreads
# CMAKE_HP_PTHREADS_INIT - are we using hp pthreads
#
# The following import target is created
#
# ::
#
# Threads::Threads
#
# For systems with multiple thread libraries, caller can set
#
# ::
@ -178,3 +184,15 @@ endif()
set(CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET_SAVE})
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Threads DEFAULT_MSG Threads_FOUND)
if(THREADS_FOUND AND NOT TARGET Threads::Threads)
add_library(Threads::Threads INTERFACE IMPORTED)
if(THREADS_HAVE_PTHREAD_ARG)
set_property(TARGET Threads::Threads PROPERTY INTERFACE_COMPILE_OPTIONS "-pthread")
endif()
if(CMAKE_THREAD_LIBS_INIT)
set_property(TARGET Threads::Threads PROPERTY INTERFACE_LINK_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
endif()
endif()