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-rw-r--r--libstdc++-v3/linkage.m42
1 files changed, 1 insertions, 1 deletions
diff --git a/libstdc++-v3/linkage.m4 b/libstdc++-v3/linkage.m4
index ae8b18f544c..621492dd304 100644
--- a/libstdc++-v3/linkage.m4
+++ b/libstdc++-v3/linkage.m4
@@ -510,7 +510,7 @@ AC_DEFUN(GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT, [
dnl always pass if libm is available, and fail if it isn't. If it is
dnl available, we assume we'll need it later, so add it to LIBS.
AC_CHECK_LIB(m, main)
- AC_REPLACE_MATHFUNCS(nan copysignf)
+ AC_REPLACE_MATHFUNCS(copysignf)
dnl For __signbit to signbit conversions.
AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])