iedera sets default flags that override user {C,CXX,LD}FLAGS

--- iedera-1.05/configure.in
+++ iedera-1.05/configure.in
@@ -4,11 +4,5 @@
 AC_PROG_INSTALL
 AC_PROG_CXX
 AC_HEADER_STDC
-CFLAGS="$CFLAGS $UNAME_DEFS -O3 -pipe -funroll-loops -Wall"
-CXXFLAGS="$CFLAGS"
-LDFLAGS="$LDFLAGS -lm"
-AC_SUBST(CFLAGS)
-AC_SUBST(CXXFLAGS)
-AC_SUBST(LDFLAGS)
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT