crosstool-ng/samples/arc-arc700-linux-uclibc/crosstool.config
Alexey Brodkin 409046f91d ARC: Update Linux samples
There's no point in keeping samples which are in its essense
just a sub-set of multilib toolchain.

But still we'd like to cover quite unusual but really existing
case - ARC750, i.e. ARC700 with MMU but without so-called
atomic instructions (LLOCK/SCOND). To support this HW variation
we need:
 1) Compile all target binaries without "-matomics" or even
    better "-mno-atomics" so that's even future-proof
    (as we may decide to enable "-matomics" by default for Linux
     targets which is a recommented setup).
 2) Configure libc such that it uses Linux-kernel-assisted implementation
    of atomic operation via "arc_usr_cmpxchg" syscall,
    see https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=b985fa069187e4c5a7ee84213d9fbead2f219ce5

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-21 15:03:17 +03:00

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CT_ARCH_ARC=y
CT_TARGET_ALIAS="arc-linux"
CT_TARGET_CFLAGS="-mno-atomic"
CT_TARGET_VENDOR="snps"
CT_KERNEL_LINUX=y
CT_LIBC_UCLIBC=y
CT_ARCH_CPU="arc700"