Cannot find 'wasm' plugin

[Shamaoke]

Hi.

I'm trying to open a WebAssembly binary file (r2 sample.wasm). Every time I open it the program outputs the following.

ERROR: Cannot find 'wasm' asm/arch/anal plugin. See rasm2 -L or -LL
ERROR: Cannot find 'wasm' asm/arch/anal plugin. See rasm2 -L or -LL
ERROR: Cannot find 'wasm' asm/arch/anal plugin. See rasm2 -L or -LL

What do the program want to inform me about in this case?

What actions should I perform in response to that information?

Thanks.

radare2 5.8.4 0 @ linux-x86-64 git.5.8.4
commit: unknown build: 2023-04-28__20:51:49

[trufae]

The wasm plugin is there and its tested in the ci. Which distro or how you build it?

[Shamaoke]

The distribution is Arch. I installed Radare2 from the official repository (community/radare2).

[trufae]

This is not the first issue i receive from bugs in the arch package that are not a problem in r2. Please report it there and install r2 from git or sources

[Shamaoke]

I compiled and installed Radare2 from AUR and still get the same errors.

[trufae]

As expected. There are several things wrong in the aur package. Build r2 from git following the standard steps.

[Shamaoke]

@trufae Could you explain, what the exact problem with the PKGBUILD script? How the script can be improved?

I filed a bug report downstream. One of the commenters pointed out that the problem could be related to building with the Meson system. He also said that this change could be the possible cause of the problem.

[trufae]

The wasm plugin for meson is optional and disabled by default. See libr/meson.build and grep for wasm

[antonio-rojas]

So, as far as I can see, specifying a list of plugins will override the default plugin list. What if one wants to append a plugin to the default list? (ie. build the default list + wasm)

[trufae]

Correct, when i finish the arch refactoring i may spend some time making all plugins optional and having the same defaults for meson and acr. actually i should run the ci with the meson build to catch those differences 👍

[trufae]

Other issues i find is that is linking against cs4 which is like 5 year old and it misses so many instructions that it makes it useless for any modern x64 or arm64 binary

[trufae]

The url must be radareorg not radare.
Openssl is only necessary for the tls support which basically nobody uses.
libuv is totally not necessary and support is not well tested. Same for libmagic.

i dont get the touch libr/config.mk line either

The pkgversion can be just ./configure -qV

[trufae]

The r2.1 manpage should be installed in the latest release. Not sure about the doc, but this should be fixed in my side instead of manually copying the files

[trufae]

Thanks for reporting and taking care of this :) i really hope arch gets better builds of r2

[Shamaoke]

Thank you for your kindly help!

[trufae]

wasm is now included by default in meson builds :) thanks for reporting!