nbench-byte: Fix sysinfo generation in parallel build

The project Makefile uses a script (sysinfo.sh) to non-atomically generate
two .c files (sysinfo.c, sysinfoc.c) which are then included in the build.
Since the script always overwrites both .c files, the Makefile should only
invoke it once, not twice in parallel. Otherwise the .c files may be
corrupted and cause random build failures in parallel builds.

Requires at least GNU make 4.3, for Grouped Targets support [1].

[1] https://lists.gnu.org/archive/html/info-gnu/2020-01/msg00004.html

Reviewed-by: Silvio Fricke <silvio.fricke@gin.de>
Signed-off-by: Daniel Klauer <daniel.klauer@gin.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

0 files changed, 0 insertions, 0 deletions