CI: enable LLVM in Jenkins

[smlng]

this PR enables all tests on native using LLVM toolchain, it depends on #6598 #6609.

[smlng]

@gebart now LLVM fails when compiling tests/unittests/ with:

kernel_init.c:58:18: error: self-comparison always evaluates to true [-Werror,-Wtautological-compare]
    if (LOG_INFO <= LOG_INFO) printf("main(): This is RIOT! (Version: " "buildtest" ")\n");
                 ^
1 error generated.

you see this error too?`

[jnohlgard]

Well it is a tautological comparison, so it should be fixed (LOG_INFO == LOG_INFO)

…

On Feb 15, 2017 1:42 PM, "Sebastian Meiling" ***@***.***> wrote: @gebart <https://github.com/gebart> now LLVM fails when compiling tests/unittests/ with: kernel_init.c:58:18: error: self-comparison always evaluates to true [-Werror,-Wtautological-compare] if (LOG_INFO <= LOG_INFO) printf("main(): This is RIOT! (Version: " "buildtest" ")\n"); ^ 1 error generated. you see this error too?` — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#6600 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AATYQkIBtnr4aR8bwgmpr4gKGUH76vA4ks5rcvKPgaJpZM4MAhV9> .

[jnohlgard]

But no, I did not see the same error. On Feb 15, 2017 1:59 PM, "Joakim Nohlgård" <joakim.nohlgard@eistec.se> wrote:

…

Well it is a tautological comparison, so it should be fixed (LOG_INFO == LOG_INFO) On Feb 15, 2017 1:42 PM, "Sebastian Meiling" ***@***.***> wrote: > @gebart <https://github.com/gebart> now LLVM fails when compiling > tests/unittests/ with: > > kernel_init.c:58:18: error: self-comparison always evaluates to true [-Werror,-Wtautological-compare] > if (LOG_INFO <= LOG_INFO) printf("main(): This is RIOT! (Version: " "buildtest" ")\n"); > ^ > 1 error generated. > > you see this error too?` > > — > You are receiving this because you were mentioned. > Reply to this email directly, view it on GitHub > <#6600 (comment)>, or mute > the thread > <https://github.com/notifications/unsubscribe-auth/AATYQkIBtnr4aR8bwgmpr4gKGUH76vA4ks5rcvKPgaJpZM4MAhV9> > . >

[smlng]

@gebart Jenkins uses clang: clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final), so its a bit older than yours (3.9.x something, IIRC?).

[smlng]

needs #6612 #6744

[smlng]

and #6606 merged

[kYc0o]

Can we try to get this merged before #6673 ?

[smlng]

nope, there are more parts missing.

[smlng]

separated commits into extra PR #6752

[smlng]

closing as memo, as we go for Murdock 2 instead Jenkins - at least for the time being