On Wed, Aug 7, 2024 at 8:10 AM Daniel Gomez via B4 Relay <devnull+da.gomez.samsung.com@xxxxxxxxxx> wrote: > > From: Nick Desaulniers <nick.desaulniers@xxxxxxxxx> > > When building the Linux kernel on an aarch64 MacOS based host, if we don't > specify a value for ARCH when invoking make, we default to arm and thus > multi_v7_defconfig rather than the expected arm64 and arm64's defconfig. > > This is because subarch.include invokes `uname -m` which on MacOS hosts > evaluates to `arm64` but on Linux hosts evaluates to `aarch64`, > > This allows us to build ARCH=arm64 natively on MacOS (as in ARCH need > not be specified on an aarch64-based system). > > Utilize a negative lookahead regular expression to avoid matching arm64. Does sed support "negative lookahead regular expression"? > > Add a separate expression to support for armv.* as per error reported by > Nicolas Schier [1]. > > [1] https://lore.kernel.org/all/Y3MRvtwdjIwMHvRo@xxxxxxxxxxxxxxxx/#t > > Signed-off-by: Nick Desaulniers <nick.desaulniers@xxxxxxxxx> > Signed-off-by: Daniel Gomez <da.gomez@xxxxxxxxxxx> > --- > scripts/subarch.include | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/scripts/subarch.include b/scripts/subarch.include > index 4bd327d0ae42..5d84ad8c0dee 100644 > --- a/scripts/subarch.include > +++ b/scripts/subarch.include > @@ -6,7 +6,8 @@ > > SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ > -e s/sun4u/sparc64/ \ > - -e s/arm.*/arm/ -e s/sa110/arm/ \ > + -e s/armv.*/arm/ \ > + -e s/arm\(?:\(?!64\).*\)/arm/ -e s/sa110/arm/ \ s/arm\(?:\(?!64\).*\)/arm/ In sed, this expression does not seem to match anything. (or please give me some matching examples if I miss something) Nocolas already provided correct code: > [1] https://lore.kernel.org/all/Y3MRvtwdjIwMHvRo@xxxxxxxxxxxxxxxx/#t > -e s/s390x/s390/ \ > -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ > -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \ > > -- > Git-146) > > -- Best Regards Masahiro Yamada
