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-rw-r--r--configure.ac5
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 77b71a7..e2f230f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -94,6 +94,11 @@ case $host in
;;
esac
+# Check for optional GNU libc features.
+# Will probably only be found on Linux.
+AC_CHECK_HEADERS([malloc.h])
+AC_CHECK_FUNCS([malloc_trim])
+
#
# Config options
#