On cygwin, define _GNU_SOURCE in pthreads-based OpenThreads

pthread_{yield,getconcurrency,setconcurrency} are not declared in pthread.h on cygwin with gcc 7.3.0 unless _GNU_SOURCE is defined.
ananace · Aug 5, 2018 · b4889a8 · b4889a8
1 parent cd5c75a
commit b4889a8
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/OpenThreads/pthreads/CMakeLists.txt b/src/OpenThreads/pthreads/CMakeLists.txt
@@ -20,6 +20,11 @@ SET(TARGET_SRC
     ../common/Version.cpp
     ../common/Atomic.cpp
 )
+
+IF(CYGWIN)  # define for pthread_{yield,getconcurrency,setconcurrency}
+    ADD_DEFINITIONS(-D_GNU_SOURCE)
+ENDIF()
+
 IF(ANDROID)
       ADD_DEFINITIONS(-D_GNU_SOURCE)
       SET(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_GNU_SOURCE")