[Bug 1875412] Re: netplan.io: ftbfs with GCC 10

[Lukas Märdian]

** Changed in: netplan
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1875412

Title:
  netplan.io: ftbfs with GCC 10

Status in netplan:
  Fix Released
Status in netplan.io package in Ubuntu:
  Fix Released
Status in netplan.io package in Debian:
  Confirmed

Bug description:
  Netplan fails to link with GCC 10 due to a repeated non-extern
  variable declaration in a header used across multiple source files.

  cc -shared -Wl,-soname,libnetplan.so.0.0 -g -fPIC -std=c99 -D_XOPEN_SOURCE=500 -DSBINDIR=\"/usr/sbin\" -Wall -Werror  -g -O2 -fdebug-prefix-map=/home/andrewsh/projects/netplan.io=. -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -Wl,-z,relro -o libnetplan.so.0.0 parse.o util.o validation.o error.o `pkg-config --libs yaml-0.1`
  /usr/bin/ld: validation.o:./src/parse.h:34: multiple definition of `missing_id'; parse.o:./src/parse.h:34: first defined here
  /usr/bin/ld: validation.o:./src/parse.h:35: multiple definition of `missing_ids_found'; parse.o:./src/parse.h:35: first defined here
  /usr/bin/ld: validation.o:./src/parse.h:28: multiple definition of `current_file'; parse.o:./src/parse.h:28: first defined here
  /usr/bin/ld: error.o:./src/parse.h:28: multiple definition of `current_file'; parse.o:./src/parse.h:28: first defined here
  /usr/bin/ld: error.o:./src/parse.h:35: multiple definition of `missing_ids_found'; parse.o:./src/parse.h:35: first defined here
  /usr/bin/ld: error.o:./src/parse.h:34: multiple definition of `missing_id'; parse.o:./src/parse.h:34: first defined here
  collect2: error: ld returned 1 exit status
  make[1]: *** [Makefile:42: libnetplan.so.0.0] Error 1

  See also: https://bugs.debian.org/957603

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