Docker: update to Ubuntu Bionic #9405
Description
EDIT: changed the title to make more clear the breadth of the proposed change, so that it can be used as an in-project proxy for RIOT-OS/riotdocker#42 with the release milestone.
Description
avr-libc 1.8.x does not implement the full C standard library. It is missing at least code related to time.h. Thus things related to RTC work on the ATmegas cannot be linked (they can be compiled due to cpu/atmega_common/avr-libc-extra providing time.h, but an implementation is not provided). avr-libc 2.0.x is required for an implementation for time. Unfortunately, the Docker image and build server use the old version (Ubuntu Xenial does not provide 2.0.x).
Steps to reproduce the issue
Attempt to compile code using functions from time.h, such as in #8842
Expected results
Function calls using time.h link correctly.
Actual results
From build server output:
--- build output of app tests/periph_rtc for board mega-xplained (raw, runtime=0.8s):
-- running on worker haw-icc thread 1, build number 84590.
make: Entering directory '/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/tests/periph_rtc'
Building application "tests_periph_rtc" for "mega-xplained" with MCU "atmega1284p".
/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/build/atmega_common_periph.a(rtc.o): In function `rtc_set_time':
rtc.c:(.text.rtc_set_time+0x20): undefined reference to `mk_gmtime'
/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/build/atmega_common_periph.a(rtc.o): In function `rtc_get_time':
rtc.c:(.text.rtc_get_time+0x64): undefined reference to `gmtime_r'
/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/build/atmega_common_periph.a(rtc.o): In function `rtc_set_alarm':
rtc.c:(.text.rtc_set_alarm+0x2a): undefined reference to `mk_gmtime'
/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/build/atmega_common_periph.a(rtc.o): In function `rtc_get_alarm':
rtc.c:(.text.rtc_get_alarm+0x6): undefined reference to `gmtime_r'
collect2: error: ld returned 1 exit status
/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/tests/periph_rtc/../../Makefile.include:356: recipe for target '/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/build/tests_periph_rtc.elf' failed
make: *** [/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/build/tests_periph_rtc.elf] Error 1
make: Leaving directory '/tmp/dwq.0.9010834105496806/82cd9ea90eaac3dd14c6d7f70c0c870c/tests/periph_rtc'
-- build directory size: 692K
Versions
From build server output:
Installed compiler toolchains
-----------------------------
native gcc: gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
arm-none-eabi-gcc: arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 7-2017-q4-major) 7.2.1 20170904 (release) [ARM/embedded-7-branch revision 255204]
avr-gcc: avr-gcc (GCC) 4.9.2
mips-mti-elf-gcc: mips-mti-elf-gcc (Codescape GNU Tools 2016.05-03 for MIPS MTI Bare Metal) 4.9.2
msp430-gcc: msp430-gcc (GCC) 4.6.3 20120301 (mspgcc LTS 20120406 unpatched)
riscv-none-embed-gcc: riscv-none-embed-gcc (GNU MCU Eclipse RISC-V Embedded GCC, 64-bits) 7.2.0
clang: clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
Installed compiler libs
-----------------------
arm-none-eabi-newlib: "2.5.0"
mips-mti-elf-newlib: "2.1.0"
riscv-none-embed-newlib: "2.5.0"
avr-libc: "1.8.0svn" ("20111229")
Installed development tools
---------------------------
cmake: cmake version 3.10.0
cppcheck: Cppcheck 1.72
doxygen: 1.8.11
flake8: missing
git: git version 2.7.4
coccinelle: spatch version 1.0.4 with Python support and with PCRE support