diff --git a/cmake/os/Linux.cmake b/cmake/os/Linux.cmake index 10d3a719609cce78b5b6b5c826138aff377aec77..13fa1c3f14805eb135dabd21ce5ee2e378b5135f 100644 --- a/cmake/os/Linux.cmake +++ b/cmake/os/Linux.cmake @@ -22,6 +22,7 @@ INCLUDE(CheckSymbolExists) SET(TARGET_OS_LINUX 1) SET(HAVE_NPTL 1) SET(_GNU_SOURCE 1) +SET(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} -D_GNU_SOURCE=1) # Fix CMake (< 2.8) flags. -rdynamic exports too many symbols. FOREACH(LANG C CXX)