<snip> > > > > > > > > > > Switch to generic build on arm Travis machines to avoid > > > > > differences in build configuration caused by different Arm hardware. > > > > > > > > > > Signed-off-by: Juraj Linkeš <juraj.lin...@pantheon.tech> > > > > > --- > > > > > .ci/linux-build.sh | 4 ++++ > > > > > 1 file changed, 4 insertions(+) > > > > > > > > > > diff --git a/.ci/linux-build.sh b/.ci/linux-build.sh index > > > > > d079801d7..7fe0fcfd8 > > > > > 100755 > > > > > --- a/.ci/linux-build.sh > > > > > +++ b/.ci/linux-build.sh > > > > > @@ -33,6 +33,10 @@ if [ "$AARCH64" = "1" ]; then > > > > > OPTS="$OPTS --cross-file config/arm/arm64_armv8_linux_gcc" > > > > > fi > > > > > > > > > > +if [ "$(uname -m)" = "aarch64" ]; then > > > > > + OPTS="$OPTS -Dmachine=generic" > > > > > +fi > > > > > + > > > > I do not think we should change it by default. We would need to > > > > test generic builds as well as the SoC specific build. > > > > > > > > > > I'll drop the patch. Testing without it revealed a failure in clang > > > Graviton2 build (only in that one build, other build are working fine): > > > ../lib/librte_eal/arm/include/rte_atomic_64.h:76:39: error: > > > instruction > > > requires: lse > > > > > > Here's the build with full log: https://travis- > > > ci.com/github/jlinkes/dpdk/jobs/433176503 > > > > > > I think we need to add a commit that fixes the failure but I don't > > > know how to fix it. > > > > Can you try '-mcpu=native' instead of '-march=native -mtune=native' > > for native build? > > Clang doesn't support '-march=native'. > > Reference can be found here: > > https://community.arm.com/developer/tools-software/tools/b/tools- > softw > > are- > > ides-blog/posts/compiler-flags-across-architectures-march-mtune-and-mc > > pu > > > > > Unfortunately, it did not help: > Compiler for C supports arguments -mcpu=native: YES > Message: Using machine args: ['-mcpu=native'] ... > ../lib/librte_eal/arm/include/rte_atomic_64.h:76:39: error: instruction > requires: lse > > Full log here: https://travis-ci.com/github/jlinkes/dpdk/jobs/433414180 > I was able to reproduce this on N1SDP through some hacks. The current code uses the flags " -march=armv8.2-a+crypto -mcpu=neoverse-n1" and the compilation succeeds.
With "-march=native, -mtune=native", the build fails "-march=native" I see the message " Compiler for C supports arguments -march=native: NO (cached)" and the build fails "-mtune=native" I see the message " Compiler for C supports arguments -mtune=native: YES (cached)" and the build fails "-mcpu=native" I see the message "Compiler for C supports arguments -mcpu=native: YES" and the build fails. Looks like a compiler issue to me > > > > > > > > > if [ "$BUILD_DOCS" = "1" ]; then > > > > > OPTS="$OPTS -Denable_docs=true" > > > > > fi > > > > > -- > > > > > 2.20.1
