Error al compilar: mix deps.compile meeseeks_html5ever: symbol LLVMInitializeMSP430TargetInfo version LLVM_7 not defined…
Estoy haciendo alguna cosa con Elixir, necesitaba la librería meeseeks. Primero tuve que instalar rust:
sudo dnf install rust cargo
Sin embargo, al hacer iex -S mix, saltaba el siguiente error:
error: couldn't load codegen backend "/usr/lib/rustlib/x86_64-unknown-linux-gnu/codegen-backends/librustc_codegen_llvm-llvm.so": "/usr/lib/rustlib/x86_64-unknown-linux-gnu/codegen-backends/librustc_codegen_llvm-llvm.so: symbol LLVMInitializeMSP430TargetInfo version LLVM_7 not defined in file libLLVM-7.so with link time reference"
Buscando el fichero libLLVM-7.so lo encuentro en /usr/lib64/libLLVM-7.so. Busco el símbolo que causa el error:
[j@localhost sukui]$ readelf -Ws /usr/lib64/libLLVM-7.so | grep LLVMInitializeMSP430TargetInfo
[j@localhost sukui]$
No devolvía nada. Me encontré este enlace en el que se mencionaba un error parecido, que se solventaba actualizando llvm. Haciendo dnf list installed «*llvm*» comprobé que tenía la versión 7.0.1-3.fc29. Actualizo a la versión 7.0.1-4.fc29 con´sudo dnf update llvm-libs, y ahora va todo bien: el símbolo está y compila:
[j@localhost sukui]$ readelf -Ws /usr/lib64/libLLVM-7.so | grep LLVMInitializeMSP430TargetInfo
4702: 0000000002501b30 56 FUNC GLOBAL DEFAULT 13 LLVMInitializeMSP430TargetInfo@@LLVM_7
[j@localhost sukui]$ mix deps.compile meeseeks_html5ever
==> meeseeks_html5ever
Compiling NIF crate :meeseeks_html5ever_nif (native/meeseeks_html5ever_nif)...
Downloading crates ...
Downloaded markup5ever v0.7.5
Downloaded xml5ever v0.12.1
Downloaded lazy_static v1.2.0
Downloaded tendril v0.4.1
Downloaded rustler v0.20.0
Downloaded scoped-pool v1.0.0
Downloaded html5ever v0.22.5
Downloaded log v0.4.6
Downloaded serde_json v1.0.38
Downloaded phf v0.7.24
Downloaded string_cache v0.7.3
Downloaded serde_derive v1.0.88
Downloaded phf_codegen v0.7.24
Downloaded mac v0.1.1
Downloaded serde v1.0.88
Downloaded string_cache_codegen v0.4.2
Downloaded time v0.1.42
Downloaded phf_shared v0.7.24
Downloaded itoa v0.4.3
Downloaded utf-8 v0.7.5
Downloaded proc-macro2 v0.4.27
Downloaded cfg-if v0.1.6
Downloaded quote v0.6.11
Downloaded scopeguard v0.1.2
Downloaded ryu v0.2.7
Downloaded string_cache_shared v0.3.0
Downloaded which v2.0.1
Downloaded crossbeam v0.2.12
Downloaded new_debug_unreachable v1.0.2
Downloaded erlang_nif-sys v0.6.4
Downloaded syn v0.15.26
Downloaded futf v0.1.4
Downloaded unicode-xid v0.1.0
Downloaded siphasher v0.2.3
Downloaded precomputed-hash v0.1.1
Downloaded phf_generator v0.7.24
Downloaded variance v0.1.3
Downloaded rand v0.6.5
Downloaded rand_xorshift v0.1.1
Downloaded libc v0.2.48
Downloaded unreachable v0.1.1
Downloaded rand_isaac v0.1.1
Downloaded rand_core v0.4.0
Downloaded rand_pcg v0.1.1
Downloaded failure v0.1.5
Downloaded rand_chacha v0.1.1
Downloaded rand_hc v0.1.0
Downloaded rand_os v0.1.2
Downloaded autocfg v0.1.2
Downloaded rand_core v0.3.1
Downloaded rand_jitter v0.1.3
Downloaded void v1.0.2
Downloaded rustc_version v0.2.3
Downloaded backtrace v0.3.14
Downloaded rustc-demangle v0.1.13
Downloaded semver v0.9.0
Downloaded backtrace-sys v0.1.28
Downloaded semver-parser v0.7.0
Downloaded cc v1.0.29
Compiling semver-parser v0.7.0
Compiling autocfg v0.1.2
Compiling libc v0.2.48
Compiling rand_core v0.4.0
Compiling cc v1.0.29
Compiling proc-macro2 v0.4.27
Compiling unicode-xid v0.1.0
Compiling siphasher v0.2.3
Compiling ryu v0.2.7
Compiling serde v1.0.88
Compiling cfg-if v0.1.6
Compiling string_cache_shared v0.3.0
Compiling rustc-demangle v0.1.13
Compiling itoa v0.4.3
Compiling mac v0.1.1
Compiling new_debug_unreachable v1.0.2
Compiling erlang_nif-sys v0.6.4
Compiling lazy_static v1.2.0
Compiling utf-8 v0.7.5
Compiling void v1.0.2
Compiling precomputed-hash v0.1.1
Compiling variance v0.1.3
Compiling scopeguard v0.1.2
Compiling crossbeam v0.2.12
Compiling rand_chacha v0.1.1
Compiling rand v0.6.5
Compiling backtrace v0.3.14
Compiling semver v0.9.0
Compiling rand_core v0.3.1
Compiling rand_jitter v0.1.3
Compiling phf_shared v0.7.24
Compiling backtrace-sys v0.1.28
Compiling log v0.4.6
Compiling futf v0.1.4
Compiling unreachable v0.1.1
Compiling scoped-pool v1.0.0
Compiling rand_hc v0.1.0
Compiling rand_xorshift v0.1.1
Compiling rand_isaac v0.1.1
Compiling rustc_version v0.2.3
Compiling phf v0.7.24
Compiling tendril v0.4.1
Compiling rand_pcg v0.1.1
Compiling rand_os v0.1.2
Compiling time v0.1.42
Compiling quote v0.6.11
Compiling serde_json v1.0.38
Compiling syn v0.15.26
Compiling failure v0.1.5
Compiling which v2.0.1
Compiling phf_generator v0.7.24
Compiling rustler v0.20.0
Compiling string_cache_codegen v0.4.2
Compiling phf_codegen v0.7.24
Compiling string_cache v0.7.3
Compiling serde_derive v1.0.88
Compiling html5ever v0.22.5
Compiling markup5ever v0.7.5
Compiling xml5ever v0.12.1
Compiling meeseeks_html5ever_nif v0.11.0 (/home/j/Documents/sukui/deps/meeseeks_html5ever/native/meeseeks_html5ever_nif)
Finished release [optimized] target(s) in 10m 36s
Compiling 2 files (.ex)
Generated meeseeks_html5ever app
[j@localhost sukui]$
Ahora:
[j@localhost sukui]$ iex -S mix
Erlang/OTP 20 [erts-9.3.3.8] [source][/source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:10] [hipe] [kernel-poll:false]
==> meeseeks
Compiling 1 file (.yrl)
Compiling 1 file (.xrl)
Compiling 2 files (.erl)
Compiling 89 files (.ex)
warning: function :xmerl_xpath_scan.tokens/1 is undefined (module :xmerl_xpath_scan is not available)
lib/meeseeks/selector/xpath/tokenizer.ex:10
Generated meeseeks app
==> sukui
Compiling 3 files (.ex)
Generated sukui app
** (Mix) Could not start application xmerl: could not find application file: xmerl.app
Mirando aquí veo que tengo que instalar erlang-xmerl, que me actualiza varias cosas incluyendo erlang, y ahora sí que puedo hacer:
[j@localhost sukui]$ iex -S mix
2019-05-02 18:12:34 ~s~n
"driver_select(0x00007f43c0700ba8, 0, ERL_DRV_READ ERL_DRV_USE, 1) by tty_sl (tty_sl -c -e) driver #Port<0.505> called before stop_select was called for driver 'tty_sl'\n"
Erlang/OTP 20 [erts-9.3.3.10] [source][/source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:10] [hipe] [kernel-poll:false]
=ERROR REPORT==== 2-May-2019::20:12:34 ===
driver_select(0x00007f43c0700ba8, 0, ERL_DRV_READ ERL_DRV_USE, 1) by tty_sl (tty_sl -c -e) driver #Port<0.505> called before stop_select was called for driver 'tty_sl'
Interactive Elixir (1.7.2) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)>
BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
(v)ersion (k)ill (D)b-tables (d)istribution
^C[j@localhost sukui]$
[j@localhost sukui]$
El error de Erlang que aparece arriba creo que es normal al actualizar. Al ejecutar por segunda vez todo va bien:
[j@localhost sukui]$ iex -S mix
Erlang/OTP 20 [erts-9.3.3.10] [source][/source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:10] [hipe] [kernel-poll:false]
Interactive Elixir (1.7.2) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)>
BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
(v)ersion (k)ill (D)b-tables (d)istribution
^C[j@localhost sukui]$