BUILD GPU error, **cannot find -lgfortran**

[c-xyli]

I was following the script of run_perception_module on_your_local_computer

After finished all the steps, In step 8 when I run ./apollo.sh build_opt_gpu

ERROR: /apollo/modules/planning/tools/BUILD:5:1: Linking of rule '//modules/planning/tools:planning_stats' failed (Exit 1) /usr/bin/ld: cannot find -lgfortran

collect2: error: ld returned 1 exit status

Can someone help me how to solve it?

[zhxt]

@c-xyli This usually happened when the linker can not find the desire lib(libgfortran.so in this case). So you can:

1. Check if it's installed inside docker with apt-cache policy libgfortran-4.8-dev or dpkg -L libgfortran-4.8-dev (The answer could be yes if you're using the latest docker image)

2. If it's installed, then the reason could be the path of that lib is not in the default search path. Maybe there are something goes wrong with the build env. You can try to clean and rebuild again. Or you can try to add a "linkopts" to the BUILD file to specify the lib path with '-L' option, but normally this is NO NEED to do it manually.

[Xiaoyang-Rebecca]

The libgfortran is located in the folder libgfortran/4.8, rather than libgfortran-4.8, see more https://askubuntu.com/questions/276892/cannot-find-lgfortran

[techoe]

@zhxt, Thank you for answering the question. @c-xyli, please let us know if you still have this issue. Thank you, Tae Eun

[c-xyli]

Problem solved , thx.

From: Tae Eun Choe [mailto:notifications@github.com] Sent: Sunday, July 08, 2018 11:59 PM To: ApolloAuto/apollo apollo@noreply.github.com Cc: Rebecca (Xiaoyang) Li (Intern) c-xyli@ambarella.com; Mention mention@noreply.github.com Subject: Re: [ApolloAuto/apollo] BUILD GPU error, cannot find -lgfortran (#4331)

@zhxthttps://github.com/zhxt, Thank you for answering the question. @c-xylihttps://github.com/c-xyli, please let us know if you still have this issue. Thank you, Tae Eun

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[natashadsouza]

Currently closing this issue as it is resolved.