Error while compiling in ros2 using colcon

[Alexior319]

My configuration:

• docker image: osrf/ros:foxy-desktop
• ros2 version: foxy
• cmake version: 3.16.3
• bison version: 3.5.1
• flex version: 2.6.4
• perl version: v5.30.0

I use the following commands to compile this project:

mkdir -p ~/ws/src
cd ~/ws/src
git clone https://github.com/fmrico/popf.git -b foxy-devel
cd ..
colcon build --symlink-install

Then it always fails with the following information:

Starting >>> popf --- stderr: popf /root/ws/src/popf/src/VALfiles/parsing/pddl+.yacc: warning: 1 shift/reduce conflict [-Wconflicts-sr] /root/ws/src/popf/src/VALfiles/parsing/pddl+.yacc: warning: 4 reduce/reduce conflicts [-Wconflicts-rr] sed: can't read s/yyerror(char/yyerror(const char/: No such file or directory

Finished <<< popf [15.9s]

Summary: 1 package finished [16.0s] 1 package had stderr output: popf

When I checkout at other branches (e.g. humber-devel) and compile, it also reports error as before.

Really get frustrated, looking forward to your reply.

[Alexior319]

My mistake, these warnings do not affect functionality.