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build: explicitly enable sse4 for meson

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If the compiler does not recognise the specific CPU when building with the
default "native" machine type, sse4.2 instructions can be missing, causing
a build error. Rather than advising the user to change the machine type,
we can just turn on SSE4.2 directly. This can prevent issues with running
automated tests with older compilers/distros on newer hardware.

Cc: stable@dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: David Marchand <david.marchand@redhat.com>
This commit is contained in:
Bruce Richardson 2019-12-23 10:38:40 +00:00 committed by David Marchand
parent 2e088e6f94
commit 10060dba64
1 changed files with 2 additions and 4 deletions
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6
config/x86/meson.build
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@ -15,11 +15,9 @@ if not is_windows
endif
# we require SSE4.2 for DPDK
sse_errormsg = '''SSE4.2 instruction set is required for DPDK.
Please set the machine type to "nehalem" or "corei7" or higher value'''
if cc.get_define('__SSE4_2__', args: machine_args) == ''
error(sse_errormsg)
message('SSE 4.2 not enabled by default, explicitly enabling')
machine_args += '-msse4'
endif
base_flags = ['SSE', 'SSE2', 'SSE3','SSSE3', 'SSE4_1', 'SSE4_2']