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-rw-r--r--configure.ac3
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 491a9b5bf..5bab06144 100644
--- a/configure.ac
+++ b/configure.ac
@@ -424,6 +424,9 @@ AC_CHECK_FUNCS(setrlimit)
saved_cflags="$CFLAGS"
saved_ldflags="$LDFLAGS"
+AC_CHECK_LIB(m,round,)
+AC_CHECK_LIB(m,lrint,)
+AC_CHECK_FUNCS(round lrint)
# Checks for header files.
AC_HEADER_STDC