[build] Fix detection of libev

cmake/FindLibEV.cmake

@@ -27,7 +27,7 @@ IF(NOT LIBEV_FOUND)
 		CHECK_INCLUDE_FILES(ev.h HAVE_EV_H)
 		IF(HAVE_EV_H)
 # 			MESSAGE(STATUS "Looking for lib ev in ${LIBEV_LIBDIR}")
-			CHECK_LIBRARY_EXISTS(ev ev_loop "${LIBEV_LIBDIR}" HAVE_LIBEV)
+			CHECK_LIBRARY_EXISTS(ev ev_time "${LIBEV_LIBDIR}" HAVE_LIBEV)
 			IF(HAVE_LIBEV)
 				SET(LIBEV_LIBRARIES ev CACHE INTERNAL "")
 				SET(LIBEV_CFLAGS "" CACHE INTERNAL "")
@@ -46,7 +46,7 @@ IF(NOT LIBEV_FOUND)
 			CHECK_INCLUDE_FILES(ev.h HAVE_EV_H)
 			IF(HAVE_EV_H)
 # 				MESSAGE(STATUS "Looking for lib ev")
-				CHECK_LIBRARY_EXISTS(ev ev_loop "" HAVE_LIBEV)
+				CHECK_LIBRARY_EXISTS(ev ev_time "" HAVE_LIBEV)
 				IF(HAVE_LIBEV)
 					SET(LIBEV_CFLAGS "" CACHE INTERNAL "")
 					SET(LIBEV_LDFLAGS "-lev" CACHE INTERNAL "")

configure.ac

@@ -74,7 +74,7 @@ PKG_CHECK_MODULES([LIBEV], [libev], [], [
 		LIBEV_LIBS="-L$WITH_LIBEV/lib -lev"
 	else
 		AC_CHECK_HEADERS([ev.h],[
-			AC_CHECK_LIB([ev], [ev_loop], [
+			AC_CHECK_LIB([ev], [ev_time], [
 					LIBEV_LIBS="-lev"
 				],[
 				AC_MSG_ERROR([libev not found])