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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 3ec28d2..ab68cba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,7 +41,7 @@ AC_PROG_INSTALL
# Checks for header files.
AC_HEADER_STDC
-AC_CHECK_HEADERS([string.h sys/types.h unistd.h locale.h])
+AC_CHECK_HEADERS([stdlib.h string.h math.h sys/types.h unistd.h locale.h])
# =======================================================================
# Libtool