declare-executable can't find libjanet

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/usr/bin/ld: не вдалося знайти /usr/local/lib/libjanet.a: Немає такого файла або каталогу
collect2: error: ld returned 1 exit status

but the correct path is /usr/local/lib/x86_64-linux-gnu/libjanet.a

this is on debian unstable janet installed with meson

[sogaiu]

Just guessing here, but the /usr/local/lib/x86_64-linux-gnu/libjanet.a path seems odd to me.

Was looking at janet's current Makefile and a bit which puts libjanet.a into place looks like:

	cp $(JANET_STATIC_LIBRARY) '$(DESTDIR)$(LIBDIR)/libjanet.a'

Earlier in the file I see:

LIBDIR?=$(PREFIX)/lib

I'm not successfully imagining how $(DESTDIR)$(LIBDIR) ends up as /usr/local/lib/x86_64-linux-gnu...though ofc I may be missing something 😅

How was janet installed?

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it was installed with meson, not make

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here it doesn't override the dir: https://github.com/janet-lang/janet/blob/ddc122958be34a18edd754743851536b5a16a3cc/meson.build#L219
so:

~/Код/janet$ meson introspect --targets _build/ | jq '.[] | select(.type=="shared library") | .install_filename'
[
  "/usr/local/lib/x86_64-linux-gnu/libjanet.so.1.38.0",
  "/usr/local/lib/x86_64-linux-gnu/libjanet.so.1.38",
  "/usr/local/lib/x86_64-linux-gnu/libjanet.so"
]

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i now see in the README there is a --libdir /usr/local/lib, which i probably didn't pass

but on debian, i think i'm not supposed to put libraries in lib/ without the target triple

[sogaiu]

it was installed with meson, not make

Oh right, you did say that originally 😅

[sogaiu]

but on debian, i think i'm not supposed to put libraries in lib/ without the target triple

It seems like this is less a jpm issue and more like a Debian, janet, and/or a configuration issue then?

[sogaiu]

on debian, i think i'm not supposed to put libraries in lib/ without the target triple

Is it possible that under /usr/local things might be a bit different?

According to this document:

Debian GNU/Linux adheres to the Filesystem Hierarchy Standard for directory and file naming.

In FHS 3.0 there is a section about /usr/local, but I don't see anything about /usr/local/lib and target triples. I did see:

If directories /lib<qual> or /usr/lib<qual> exist, the equivalent directories must also exist in /usr/local.

but that doesn't seem relevant to me.

In FHS 2.3 there is this bit of text in the Purpose section of chapter 1:

The FHS document has a limited scope:

Local placement of local files is a local issue, so FHS does not attempt to usurp system administrators.

FHS addresses issues where file placements need to be coordinated between multiple parties such as local sites, distributions, applications, documentation, etc.

May be it's mentioned somewhere else...haven't had luck finding it yet though 😅 Perhaps you have a link to some relevant doc?

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idk but janet's configuration seems to be ok:

$ pkg-config janet --variable=libdir
/usr/local/lib/x86_64-linux-gnu

[sogaiu]

As a data point, I installed Debian 12 in a VM, then janet using meson + ninja [1] and did not get the same results.

$ pkg-config janet --variable=libdir
/usr/local/lib

$ ls /usr/local/lib/libjanet.a
/usr/local/lib/libjanet.a

It's true this is different from the "debian unstable" stated originally.

Perhaps I'll give debian unstable a try as well.

---

[1] For building with meson + ninja I used the commands from Janet's README, namely:

$ meson setup build \
          --buildtype release \
          --optimization 2 \
          --libdir /usr/local/lib \
          -Dgit_hash=$(git log --pretty=format:'%h' -n 1)

and:

$ ninja -C build

For installation I did:

$ sudo ninja -C build install

[sogaiu]

I just tried with Debian unstable (sid) and got the same results:

$ pkg-config janet --variable=libdir
/usr/local/lib

$ ls /usr/local/lib/libjanet.a
/usr/local/lib/libjanet.a

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i found the documentation: https://wiki.debian.org/Multiarch/Implementation

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yes in your installation libdir is changed because you passed --libdir /usr/local/lib to meson setup

[sogaiu]

i found the documentation: https://wiki.debian.org/Multiarch/Implementation

Thanks!

My initial impression of the document is that it is targeted at making packages for Debian. I also don't see any mention of local -- may be I missed it. Do these observations seem correct to you?

In any case, I doubt Janet / jpm accounts for multiarch arrangements directly but I could be wrong.

AFAIU, packaging of Janet / jpm for various distributions isn't something that the creator / maintainer engages in these days. I've seen him help efforts toward that end though if there is someone who is working on packaging.

[sogaiu]

yes in your installation libdir is changed because you passed --libdir /usr/local/lib to meson setup

Yes, because that is what the README specifically mentions to do:

For the impatient, building with Meson is as follows. The options provided to meson setup below emulate Janet's Makefile.

git clone https://github.com/janet-lang/janet.git
cd janet
meson setup build \
          --buildtype release \
          --optimization 2 \
          --libdir /usr/local/lib \
          -Dgit_hash=$(git log --pretty=format:'%h' -n 1)
ninja -C build