Tentatively fix the detection of ucontext.h in Darwin

[simgrid.git] / buildtools / Cmake / CompleteInFiles.cmake

diff --git a/buildtools/Cmake/CompleteInFiles.cmake b/buildtools/Cmake/CompleteInFiles.cmake
index ff67e27..7ced0a7 100644 (file)
--- a/buildtools/Cmake/CompleteInFiles.cmake
+++ b/buildtools/Cmake/CompleteInFiles.cmake
@@ -130,6 +130,10 @@ CHECK_LIBRARY_EXISTS(pthread sem_timedwait           "" HAVE_SEM_TIMEDWAIT_LIB)
 CHECK_LIBRARY_EXISTS(pthread pthread_mutex_timedlock "" HAVE_MUTEX_TIMEDLOCK_LIB)
 CHECK_LIBRARY_EXISTS(rt      clock_gettime           "" HAVE_POSIX_GETTIME)
 
+if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+  set(CMAKE_REQUIRED_DEFINITIONS -D_XOPEN_SOURCE")
+endif()
+
 CHECK_INCLUDE_FILES("time.h;sys/time.h" TIME_WITH_SYS_TIME)
 CHECK_INCLUDE_FILES("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
 CHECK_INCLUDE_FILE("pthread.h" HAVE_PTHREAD_H)
@@ -447,7 +451,8 @@ IF(CMAKE_CROSSCOMPILING)
 ELSE()
   file(REMOVE "${CMAKE_BINARY_DIR}/testprog*")
   file(REMOVE ${CMAKE_BINARY_DIR}/conftestval)
-  execute_process(COMMAND ${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/buildtools/Cmake/test_prog/prog_AC_CHECK_MCSC.c ${mcsc_flags} -o testprog
+  set(MCSC_buildcmd ${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/buildtools/Cmake/test_prog/prog_AC_CHECK_MCSC.c ${mcsc_flags} -o testprog)
+  execute_process(COMMAND ${MCSC_buildcmd}
   WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/
   OUTPUT_VARIABLE COMPILE_mcsc_VAR ERROR_VARIABLE COMPILE_mcsc_VAR)
 
@@ -457,7 +462,7 @@ ELSE()
     WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/
     OUTPUT_VARIABLE var_compil)
   else()
-    message(STATUS "prog_AC_CHECK_MCSC.c is not compilable:\n${COMPILE_mcsc_VAR}")
+    message(STATUS "prog_AC_CHECK_MCSC.c is not compilable. \nBuild command: ${MCSC_buildcmd}\nOutput\n${COMPILE_mcsc_VAR}")
   endif()
   file(REMOVE "${CMAKE_BINARY_DIR}/testprog*")