AF_PATH for ArchLinux arrayfire package

[nacardin]

Hello,

I am trying to build this crate against the Arrayfire package provided by ArchLinux (https://www.archlinux.org/packages/community/x86_64/arrayfire)

I'm not sure how to set the AF_PATH so that it points to the libs installed by the package. According to the arch package, it looks like it installs the AF libs to /usr/lib, so setting AF_PATH=/usr seems to work. I'm not sure if this the right way to do it.

Ideally, I would like to distribute a rust app which depends on the arrayfire-rust crate but is able to find and load the AF libs from the installed arrayfire package regardless of OS/distro. Is there a recommended way for doing this?

[pavanky]

Hmm. This is going to be tricky because there is no standard way to install arrayfire across all platforms. The windows installer automatically sets AF_PATH. For Linux and OSX, AF_PATH is technically not needed if they can be found on system path.

@9prady9 I am not sure how the rust wrapper implements this. Is it trying to load the libs from system path before falling back to AF_PATH ? Or is it hard coded to require AF_PATH ?

[nacardin]

On linux, if I run cargo build without specifing AF_PATH I receive the following error

error: failed to run custom build command for `arrayfire v3.4.2 (file:///home/nacardin/Sources/arrayfire-rust)`
process didn't exit successfully: `/home/nacardin/Sources/arrayfire-rust/target/debug/build/arrayfire-df26b4be171e7e77/build-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'Error use_lib is defined, but AF_PATH is not defined', build.rs:360
note: Run with `RUST_BACKTRACE=1` for a backtrace.

It would be great if it could fall back to system path.

[9prady9]

Right now, it does look if AF_PATH environment variable has been set.

I shall look into it and try to check & report AF_PATH unavailability only if required libraries are not found in system path.

[pavanky]

@9prady9 may be also try the commonly installed paths /usr/local/, /opt/arrayfire-3

[leonard7e]

Hi.
I run into similar problems. (Using Ubuntu Linux)
Tried following ...

$ echo $AF_PATH 
/opt/arrayfire-3

$ echo $LD_LIBRARY_PATH 
/opt/arrayfire-3/lib

$ ldconfig -p | grep arrayfire
	libforge.so.1 (libc6,x86-64) => /opt/arrayfire-3/lib/libforge.so.1
	libforge.so (libc6,x86-64) => /opt/arrayfire-3/lib/libforge.so
	libafopencl.so.3 (libc6,x86-64) => /opt/arrayfire-3/lib/libafopencl.so.3
	libafopencl.so (libc6,x86-64) => /opt/arrayfire-3/lib/libafopencl.so
	libafcuda.so.3 (libc6,x86-64) => /opt/arrayfire-3/lib/libafcuda.so.3
	libafcuda.so (libc6,x86-64) => /opt/arrayfire-3/lib/libafcuda.so
	libafcpu.so.3 (libc6,x86-64) => /opt/arrayfire-3/lib/libafcpu.so.3
	libafcpu.so (libc6,x86-64) => /opt/arrayfire-3/lib/libafcpu.so
	libaf.so.3 (libc6,x86-64) => /opt/arrayfire-3/lib/libaf.so.3
	libaf.so (libc6,x86-64) => /opt/arrayfire-3/lib/libaf.so

AF_PATH is correct, but my crate wont build. This ...

$ env AF_PATH=/opt/arrayfire-3
did not help.

Thank you,
Leonard

---

Error message I get ...

$ cargo run --verbose
... 
...
error: linking with `cc` failed: exit code: 1
  |
  = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.0.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.1.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.10.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.11.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.12.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.13.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.14.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.15.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.16.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.17.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.18.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.19.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.2.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.20.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.21.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.22.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.23.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.24.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.25.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.26.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.27.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.28.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.29.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.3.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.30.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.31.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.4.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.5.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.6.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.7.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.8.o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.9.o" "-o" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/arrfir_1-16d7956965d562fa.crate.allocator.o" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs" "-L" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps" "-L" "/usr/local/lib" "-L" "/opt/arrayfire-3/lib" "-L" "/usr/lib" "-L" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libarrayfire-1046a576bc6af5bf.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libnum-6ad416498729fda9.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libnum_iter-67fe43b64dfa8b39.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/liblazy_static-9b2c2a78e178f601.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libnum_complex-520247c93e6d5c75.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libnum_rational-13d387c9b1488e5d.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libnum_bigint-a604bca276fb09c5.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libnum_integer-ed395ddcba333c02.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libnum_traits-e51f9e9ba0034552.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/librand-b2034d6177c94f98.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/liblibc-9630f6e3f0bbae14.rlib" "/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/librustc_serialize-171c252dbbc5e430.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-25a16fd8f020a8da.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-186f740258cc9901.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc_jemalloc-6ae0e3c5d48bc6c2.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-c3ac59a59f44dbed.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc_system-f881f45553c93528.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-9fe1e5ed1d2d4fb7.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-0ab687f81f286f6c.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_unicode-eaf9895c9fb043d0.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-4e4e7ef07d497540.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1cf6e8609077a2ea.rlib" "/home/leonard/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-402ea1b4bbc91253.rlib" "-Wl,-Bdynamic" "-l" "util" "-l" "dl" "-l" "rt" "-l" "pthread" "-l" "pthread" "-l" "gcc_s" "-l" "c" "-l" "m" "-l" "rt" "-l" "pthread" "-l" "util"
  = note: /home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libarrayfire-1046a576bc6af5bf.rlib(arrayfire-1046a576bc6af5bf.0.o): In function `arrayfire::array::{{impl}}::new_empty':
          /home/leonard/.cargo/registry/src/github.com-1ecc6299db9ec823/arrayfire-3.5.0/src/array.rs:193: undefined reference to `af_create_handle'
          /home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libarrayfire-1046a576bc6af5bf.rlib(arrayfire-1046a576bc6af5bf.0.o): In function `arrayfire::array::{{impl}}::drop':
          /home/leonard/.cargo/registry/src/github.com-1ecc6299db9ec823/arrayfire-3.5.0/src/array.rs:457: undefined reference to `af_release_array'
          collect2: error: ld returned 1 exit status
          

error: aborting due to previous error

error: Could not compile `arrfir_1`.

Caused by:
  process didn't exit successfully: `rustc --crate-name arrfir_1 src/main.rs --crate-type bin --emit=dep-info,link -C debuginfo=2 -C metadata=16d7956965d562fa -C extra-filename=-16d7956965d562fa --out-dir /home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps -L dependency=/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps --extern arrayfire=/home/leonard/Documents/dev/scratchbook/rust/arrfir_1/target/debug/deps/libarrayfire-1046a576bc6af5bf.rlib -L native=/usr/local/lib -L native=/opt/arrayfire-3/lib -L native=/usr/lib` (exit code: 101)

[pavanky]

You need to use export. Not env

[leonard7e]

Hi Pavanky.
First I used export ( (echo $AF_PATH) gave right response) , but it did not work. Since this didn't work, I tried with env...

Somehow shell variables are used

Caused by:
    process didn't exit successfully: rustc --crate-name arrfir_1 src/main.rs ... -L native=/opt/arrayfire-3/lib ...

rustc gets path right on -L native=/opt/arrayfire-3/lib , but it still fails to link against arrayfire libs?