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-rw-r--r--src/template/linux1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/template/linux b/src/template/linux
index f820bf7280..e39290845a 100644
--- a/src/template/linux
+++ b/src/template/linux
@@ -6,6 +6,7 @@ if test x"$PREFERRED_SEMAPHORES" = x"" ; then
fi
# Force _GNU_SOURCE on; plperl is broken with Perl 5.8.0 otherwise
+# This is also required for ppoll(2), and perhaps other things
CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
# If --enable-profiling is specified, we need -DLINUX_PROFILE