dnl Set optimization and debugging for all architectures and systems.
dnl NOTE: Setting the CFLAGS/CXXFLAGS only works before calling AC_PROG_CC/AC_PROG_CXX.
if test x"$CFLAGS" = "x"; then
dnl Set optimization and debugging for all architectures and systems.
dnl NOTE: Setting the CFLAGS/CXXFLAGS only works before calling AC_PROG_CC/AC_PROG_CXX.
if test x"$CFLAGS" = "x"; then