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Date: Wed, 1 Mar 2023 14:24:50 +1100
From: David Gibson <david@gibson.dropbear.id.au>
To: Stefano Brivio <sbrivio@redhat.com>
Subject: Re: [PATCH] Makefile, seccomp.sh: Fix cross-builds, adjust syscalls
list to compiler
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References: <20230228101727.1605503-1-sbrivio@redhat.com>
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On Tue, Feb 28, 2023 at 11:17:27AM +0100, Stefano Brivio wrote:
> Debian cross-building automatic checks:
>=20
> http://crossqa.debian.net/src/passt
>=20
> currently fail because we don't use the right target architecture and
> compiler while building the system call lists and resolving their
> numbers in seccomp.sh. Pass ARCH and CC to seccomp.sh and use them.
>=20
> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> ---
> Makefile | 2 +-
> seccomp.sh | 7 +++++--
> 2 files changed, 6 insertions(+), 3 deletions(-)
>=20
> diff --git a/Makefile b/Makefile
> index 667ddfb..e5723a7 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -105,7 +105,7 @@ static: FLAGS +=3D -static -DGLIBC_NO_STATIC_NSS
> static: clean all
> =20
> seccomp.h: seccomp.sh $(PASST_SRCS) $(PASST_HEADERS)
> - @ EXTRA_SYSCALLS=3D"$(EXTRA_SYSCALLS)" ./seccomp.sh $(PASST_SRCS) $(PAS=
ST_HEADERS)
> + @ EXTRA_SYSCALLS=3D"$(EXTRA_SYSCALLS)" ARCH=3D"$(TARGET_ARCH)" CC=3D"$(=
CC)" ./seccomp.sh $(PASST_SRCS) $(PASST_HEADERS)
> =20
> passt: $(PASST_SRCS) $(HEADERS)
> $(CC) $(FLAGS) $(CFLAGS) $(CPPFLAGS) $(PASST_SRCS) -o passt $(LDFLAGS)
> diff --git a/seccomp.sh b/seccomp.sh
> index 31ea8da..b075efd 100755
> --- a/seccomp.sh
> +++ b/seccomp.sh
> @@ -17,6 +17,9 @@ TMP=3D"$(mktemp)"
> IN=3D"$@"
> OUT=3D"seccomp.h"
> =20
> +[ -z "${ARCH}" ] && ARCH=3D"$(uname -m)"
> +[ -z "${CC}" ] && CC=3D"cc"
> +
> HEADER=3D"/* This file was automatically generated by $(basename ${0}) */
> =20
> #ifndef AUDIT_ARCH_PPC64LE
> @@ -110,7 +113,7 @@ log2() {
> # $1: Name of syscall
> syscall_nr() {
> __in=3D"$(printf "#include <asm-generic/unistd.h>\n#include <sys/syscal=
l.h>\n__NR_%s" ${1})"
> - __out=3D"$(echo "${__in}" | cc -E -xc - -o - | tail -1)"
> + __out=3D"$(echo "${__in}" | ${CC} -E -xc - -o - | tail -1)"
> [ "${__out}" =3D "__NR_$1" ] && return 1
> =20
> # Output might be in the form "(x + y)" (seen on armv6l, armv7l)
> @@ -125,7 +128,7 @@ filter() {
> case ${__c} in
> *:*)
> case ${__c} in
> - $(uname -m):*)
> + ${ARCH}:*)
> __arch_match=3D1
> __c=3D${__c##*:}
> ;;
--=20
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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