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We don't use librt, so don't try and link against it.
Related to: https://github.com/zeromq/libzmq/pull/4702.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 03462271..87ceab3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -564,13 +564,6 @@ else()
check_cxx_symbol_exists(SO_BUSY_POLL sys/socket.h ZMQ_HAVE_BUSY_POLL)
endif()
-if(NOT MINGW)
- find_library(RT_LIBRARY rt)
- if(RT_LIBRARY)
- set(pkg_config_libs_private "${pkg_config_libs_private} -lrt")
- endif()
-endif()
-
find_package(Threads)
if(WIN32 AND NOT CYGWIN)
@@ -588,9 +581,7 @@ if(WIN32 AND NOT CYGWIN)
endif()
if(NOT MSVC)
- set(CMAKE_REQUIRED_LIBRARIES rt)
check_cxx_symbol_exists(clock_gettime time.h HAVE_CLOCK_GETTIME)
- set(CMAKE_REQUIRED_LIBRARIES)
check_cxx_symbol_exists(fork unistd.h HAVE_FORK)
check_cxx_symbol_exists(gethrtime sys/time.h HAVE_GETHRTIME)
@@ -1503,10 +1494,6 @@ if(BUILD_SHARED)
target_link_libraries(libzmq iphlpapi)
endif()
- if(RT_LIBRARY)
- target_link_libraries(libzmq -lrt)
- endif()
-
if(norm_FOUND)
target_link_libraries(libzmq norm::norm)
endif()
@@ -1553,10 +1540,6 @@ if(BUILD_STATIC)
target_link_libraries(libzmq-static iphlpapi)
endif()
- if(RT_LIBRARY)
- target_link_libraries(libzmq-static -lrt)
- endif()
-
if(CMAKE_SYSTEM_NAME MATCHES "QNX")
add_definitions(-DUNITY_EXCLUDE_MATH_H)
endif()
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