On Mon, 25 Aug 2014, Ralf Baechle wrote: > > >> +cflags-$(CONFIG_CPU_LOONGSON3) += -D_MIPS_ARCH_LOONGSON3A > > > > > > The _MIPS_ARCH_* namespace belongs to GCC. While it seems current GCC > > > does not define this symbol _MIPS_ARCH_LOONGSON3A runs into the danger > > > of causing a conflict when GCC eventually will define the symbol. > > When this symbol will be defined? With option '-march=loongson3a'? > > Well, not currently (at least not in my gcc 4.9.0) - but it might. In > fact, I'm wondering why it doesn't. Maciej? No idea, a _MIPS_ARCH_foo macro gets defined automagically by GCC whenever `-march=foo' is in effect (be it implicitly or with the use of a command-line option), so there should be one. Has support for "loongson3a" been present in 4.9.x (it is in trunk)? If so, then what _MIPS_ARCH_* macro gets defined for `-march=loongson3a'? Maciej
