Depends-on:
math
-frexp [test $HAVE_FREXPF = 0]
+extensions
+frexp [test $HAVE_FREXPF = 0 || test $REPLACE_FREXPF = 1]
configure.ac:
gl_FUNC_FREXPF
-if test $HAVE_FREXPF = 0; then
+if test $HAVE_FREXPF = 0 || test $REPLACE_FREXPF = 1; then
AC_LIBOBJ([frexpf])
fi
gl_MATH_MODULE_INDICATOR([frexpf])