Build Failed Ubuntu 14.04 about lab HOT 6 CLOSED

Can you try adding -lm to the relevant linkopts?

from lab.

Thanks that helped some.

This command now works.

lab$ bazel run :random_agent --define headless=false -- \
               --length=10000 --width=640 --height=480

But this command results in an error.

lab$ bazel run :game -- --level_script tests/demo_map

What I did.
I added -lm to bspc as below, which resulted in the following error.

I tried both

linkopts = ["-pthread", "-lm"],

and

linkopts = ["-lm", "-pthread"],

with bazel cleans.

Thanks

cc_binary(
    name = "bspc",
    srcs = glob([
        CODE_DIR + "/botlib/*.h",
        CODE_DIR + "/qcommon/*.h",
    ]) + [
        CODE_DIR + "/botlib/be_aas_bspq3.c",
        CODE_DIR + "/botlib/be_aas_cluster.c",

        . . .

       "-DQDECL=",
        "-pthread",
    ],
    linkopts = ["-pthread", "-lm"],
    visibility = ["//deepmind/level_generation:__subpackages__"],
    deps = ["@zlib_archive//:zlib"],
)

ERROR: /home/nburn42/Projects/deeprobotics/lab/BUILD:899:1: Linking of rule '//:game' failed: namespace-sandbox failed: error executing command /home/nburn42/.cache/bazel/_bazel_nburn42/8ac04bba4272ff63a5f54d73f1af83e1/lab/_bin/namespace-sandbox ... (remaining 19 argument(s) skipped).
/usr/bin/ld: bazel-out/local-fastbuild/bin/libgame_lib_sdl.a(cl_input.pic.o): undefined reference to symbol 'powf@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libm.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
Target //:game failed to build
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 193.349s, Critical Path: 178.77s
ERROR: Build failed. Not running target.

from lab.

Interesting. Can you remove the linker script from the DSO build rule? We were trying to isolate the DSO as much as possible, since we don't have a lot of control over all the external names in it, but it may be interfering here. Alternatively, try adding -lm also to the DSO build rule.

from lab.

Sorry about the delay.

I found that linking the math library into :game fixed my second issue.
It fixed the problems on both ubuntu 16.04 and 14.04.

All the bazel commands on the instructions now work.
I submitted a pull request with the change.

Thanks for the help.

from lab.

We will make a change similar to the one proposed in #12 in the future, which should address this. Thanks for raising!

from lab.

Fixed by d6b1afc.

from lab.