Not working with WSL

[aidenesco]

I built a binary for GOOS=linux GOARCH=amd64, packed it (compression, random offset, no dependency), and then moved the output to a windows machine running WSL ubuntu 20.04 (same as the machine it was built and packed on).

When it's run the only output is "Segmentation Fault". It runs fine on ubuntu.

[89luca89]

Hi @aidenesco , I did not test on WSL, will test and try to see if I can reproduce the issue

Is it WSL1 or WSL2?

[alfonmga]

@89luca89 Where did you test this on? maybe would be nice to have a Dockerfile to avoid this type of issues. I can't get it to work on MacOS. Thanks a lot for this awesome project BTW.

EDIT: Nevermind, just saw that you did a release for Linux AMD64.

[89luca89]

Reopening the issue, the idea of a Docker image for the packer part is appealing

@alfonmga you were referring to the packer part or to the launcher part?

[89luca89]

Expanding on this, the packer part should work fine in a docker image (and could work in any unix I think, but have not tested)

The launcher part is highly tied to Linux as it runs on specific raw syscalls

[alfonmga]

Reopening the issue, the idea of a Docker image for the packer part is appealing

@alfonmga you were referring to the packer part or to the launcher part?

The launcher part. It fails when I run make on $GOPATH/src/github.com/89luca89/pakkero to build:

> make

go build -i \
		-gcflags="-N" \
		-gcflags="-nolocalimports" \
		-gcflags="-pack" \
		-gcflags="-trimpath=." \
		-asmflags="-trimpath=." \
		-gcflags="-trimpath=$GOPATH/src/" \
		-asmflags="-trimpath=$GOPATH/src/" \
		-ldflags="-X github.com/89luca89/pakkero/internal/pakkero.LauncherStub=$(base64 -w0 data/launcher.go) -s" \
		-o dist/pakkero;
base64: invalid option -- w
Usage:	base64 [-hvDd] [-b num] [-i in_file] [-o out_file]
  -h, --help     display this message
  -Dd, --decode   decodes input
  -b, --break    break encoded string into num character lines
  -i, --input    input file (default: "-" for stdin)
  -o, --output   output file (default: "-" for stdout)
go build: -i flag is deprecated
strip \
		-sxX \
		--remove-section=.bss \
		--remove-section=.comment \
		--remove-section=.eh_frame \
		--remove-section=.eh_frame_hdr \
		--remove-section=.fini \
		--remove-section=.fini_array \
		--remove-section=.gnu.build.attributes \
		--remove-section=.gnu.hash \
		--remove-section=.gnu.version \
		--remove-section=.got \
		--remove-section=.note.ABI-tag \
		--remove-section=.note.gnu.build-id \
		--remove-section=.note.go.buildid \
		--remove-section=.shstrtab \
		--remove-section=.typelink \
		dist/pakkero;
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip: unrecognized option: -sxX
Usage: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip [-AnuSXx] [-] [-d filename] [-s filename] [-R filename] [-o output] file [...]
make: *** [all] Error 1

I'm going to try to use Docker to fix this, if my Dockerfile looks good enough I'll create a PR so you can add it to the repo.

[89luca89]

Seems to be for starters an incompatible flag between base64 from BSD coreutils and GNU Coreutils,
try installing base64 from GNU coreutils using this project:

https://github.com/fabiomaia/linuxify

EDIT: Obviously any PR is welcome :)

EDIT2: the -w flag is the culprit, it's needed to have a one-line base64 string, but it's exclusive to the GNU Version of base64
EDIT3: And the strip flags also, needs the GNU/Linux version for those flags