Rust ffi + wasm (тис -> машина go веб-запуск) -> фатальная ошибка: файл 'math.h' не найден - PullRequest
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Rust ffi + wasm (тис -> машина go веб-запуск) -> фатальная ошибка: файл 'math.h' не найден

2 голосов
/ 12 февраля 2020

Я в настоящее время разрабатываю приложение, используя C и Rust, где у меня нет проблем, когда оно используется любым из следующих способов:

  • C -> Rust -> C (swift)
  • C -> Rust -> examples (console Rust)

, но становится сложнее, когда я хочу получить доступ через wasm в Yew

  • C -> Rust -> Yew / WASM (автомобиль go веб-запуск)

Компоновщик выдает ошибку: отсутствует "math.h"

Цитаты из Википедии: https://en.wikipedia.org/wiki/C_mathematical_functions

В Linux и BSD математические функции (как заявлено в) объединяются в математической библиотеке libm отдельно. Поэтому, если какая-либо из этих функций используется, компоновщик должен получить директиву -lm.

Хотя я добавил флаг, он ничего не меняет ...

Ниже я включил файл build.rs из библиотеки моей привязки файла C -> Rust: 

use std::env;
use std::path::Path;

fn main() {
    let dir = env::var("CARGO_MANIFEST_DIR").unwrap();
    cc::Build::new()
        .flag("-g")
        //        .flag("-09")
       .flag("-lm") // math.h for wasm (dosen't work or without)
       .flag("-Wall")
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swecl.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swedate.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swehel.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swehouse.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swejpl.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swemmoon.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swemplan.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swepcalc.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/sweph.c"))
       .file(Path::new(&dir).join("src/swisseph/2.08/src/swephlib.c"))
       .compile("swe")
  }

Вот журнал ошибок моей компиляции в тисе (car go web start) 

Compiling libswe-sys v0.1.4
Compiling stdweb v0.4.20
error: failed to run custom build command for libswe-sys v0.1.4

--- stdout
TARGET = Some("wasm32-unknown-unknown")
OPT_LEVEL = Some("0")
HOST = Some("x86_64-apple-darwin")
CC_wasm32-unknown-unknown = None
CC_wasm32_unknown_unknown = None
TARGET_CC = None
CC = None
CFLAGS_wasm32-unknown-unknown = None
CFLAGS_wasm32_unknown_unknown = None
TARGET_CFLAGS = None
CFLAGS = None
CRATE_CC_NO_DEFAULTS = None
DEBUG = Some("true")
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-lm" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-2679bddccf8cd805/out/swedate.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swedate.c"
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-lm" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-2679bddccf8cd805/out/swecl.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swecl.c"
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-lm" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-2679bddccf8cd805/out/swehel.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swehel.c"
cargo:warning=clang: warning: -lm: 'linker' input unused [-Wunused-command-line-argument]
cargo:warning=clang: warning: -lm: 'linker' input unused [-Wunused-command-line-argument]
cargo:warning=clang: warning: -lm: 'linker' input unused [-Wunused-command-line-argument]
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swedate.c:86:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/sweodef.h:167:10: fatal error: 'math.h' file not found
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swecl.c:62:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swejpl.h:67:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/sweodef.h:167:10: fatal error: 'math.h' file not found
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swehel.c:68:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/sweodef.h:167:10: fatal error: 'math.h' file not found
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~`
cargo:warning=1 error generated.
exit code: 1
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-lm" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-2679bddccf8cd805/out/swehouse.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swehouse.c"
cargo:warning=1 error generated.
exit code: 1
cargo:warning=clang: warning: -lm: 'linker' input unused [-Wunused-command-line-argument]
cargo:warning=1 error generated.
exit code: 1
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swehouse.c:63:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/sweodef.h:167:10: fatal error: 'math.h' file not found
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=1 error generated.
exit code: 1

--- stderr


error occurred: Command "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-lm" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-2679bddccf8cd805/out/swecl.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.4/src/swisseph/2.08/src/swecl.c" with args "clang" did not execute successfully (status code exit code: 1).



warning: build failed, waiting for other jobs to finish...

Что бы вы предложили?

  • Найдите файл math.c / math.h и включите его в мою библиотеку c -> rust
  • Другие предложения ???

Редактировать:

Я пробовал два способа, которые не работали:

  • Добавить вручную math.h из / Библиотека / Разработчик / CommandLineTools / SDKs / MacOSX10.15.sdk / usr / include / math.h на моей ма c
  • Добавьте .include ("/ usr / include") в build.rs моей библиотека

Два способа компилирования моего libswe-sys (0.1.5 и 0.1.6)

И вот журнал тисовых сообщений для wasm:

  • с 0.1.5 (добавьте вручную math.h) 
error: failed to run custom build command for `libswe-sys v0.1.5`

--- stdout
TARGET = Some("wasm32-unknown-unknown")
OPT_LEVEL = Some("0")
HOST = Some("x86_64-apple-darwin")
CC_wasm32-unknown-unknown = None
CC_wasm32_unknown_unknown = None
TARGET_CC = None
CC = None
CFLAGS_wasm32-unknown-unknown = None
CFLAGS_wasm32_unknown_unknown = None
TARGET_CFLAGS = None
CFLAGS = None
CRATE_CC_NO_DEFAULTS = None
DEBUG = Some("true")
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-b52a4354b3363d0b/out/swedate.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swedate.c"
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-b52a4354b3363d0b/out/swecl.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swecl.c"
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swedate.c:86:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/sweodef.h:167:10: error: 'math.h' file not found with <angled> include; use "quotes" instead
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=         "math.h"
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swecl.c:62:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swejpl.h:67:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/sweodef.h:167:10: error: 'math.h' file not found with <angled> include; use "quotes" instead
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=         "math.h"
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swedate.c:86:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swecl.c:62:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swejpl.h:67:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/sweodef.h:167:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/sweodef.h:167:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/math.h:295:10: fatal error: '__config' file not found
cargo:warning=#include <__config>
cargo:warning=         ^~~~~~~~~~
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/math.h:295:10: fatal error: '__config' file not found
cargo:warning=#include <__config>
cargo:warning=         ^~~~~~~~~~
cargo:warning=2 errors generated.
exit code: 1
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-b52a4354b3363d0b/out/swehel.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swehel.c"
cargo:warning=2 errors generated.
exit code: 1
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swehel.c:68:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/sweodef.h:167:10: error: 'math.h' file not found with <angled> include; use "quotes" instead
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=         "math.h"
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swehel.c:68:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/sweodef.h:167:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/math.h:295:10: fatal error: '__config' file not found
cargo:warning=#include <__config>
cargo:warning=         ^~~~~~~~~~
cargo:warning=2 errors generated.
exit code: 1

--- stderr


error occurred: Command "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-b52a4354b3363d0b/out/swecl.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.5/src/swisseph/2.08/src/swecl.c" with args "clang" did not execute successfully (status code exit code: 1).



warning: build failed, waiting for other jobs to finish...
error: build failed
error: build failed

error: failed to run custom build command for `libswe-sys v0.1.6`

--- stdout
TARGET = Some("wasm32-unknown-unknown")
OPT_LEVEL = Some("0")
HOST = Some("x86_64-apple-darwin")
CC_wasm32-unknown-unknown = None
CC_wasm32_unknown_unknown = None
TARGET_CC = None
CC = None
CFLAGS_wasm32-unknown-unknown = None
CFLAGS_wasm32_unknown_unknown = None
TARGET_CFLAGS = None
CFLAGS = None
CRATE_CC_NO_DEFAULTS = None
DEBUG = Some("true")
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-I" "/usr/include" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-08f220b2455dd53e/out/swecl.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swecl.c"
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-I" "/usr/include" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-08f220b2455dd53e/out/swedate.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swedate.c"
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swedate.c:86:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/sweodef.h:167:10: fatal error: 'math.h' file not found
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swecl.c:62:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swejpl.h:67:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/sweodef.h:167:10: fatal error: 'math.h' file not found
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
cargo:warning=1 error generated.
exit code: 1
running: "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-I" "/usr/include" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-08f220b2455dd53e/out/swehel.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swehel.c"
cargo:warning=1 error generated.
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swehel.c:68:
cargo:warning=In file included from /Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swephexp.h:83:
cargo:warning=/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/sweodef.h:167:10: fatal error: 'math.h' file not found
cargo:warning=#include <math.h>
cargo:warning=         ^~~~~~~~
exit code: 1
cargo:warning=1 error generated.
exit code: 1

--- stderr


error occurred: Command "clang" "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=wasm32-unknown-unknown" "-I" "/usr/include" "-Wall" "-Wextra" "-g" "-Wall" "-o" "/Users/stephanebressani/Code/Rust/yewastrology/target/wasm32-unknown-unknown/debug/build/libswe-sys-08f220b2455dd53e/out/swecl.o" "-c" "/Users/stephanebressani/.cargo/registry/src/github.com-1ecc6299db9ec823/libswe-sys-0.1.6/src/swisseph/2.08/src/swecl.c" with args "clang" did not execute successfully (status code exit code: 1).



warning: build failed, waiting for other jobs to finish...
error: build failed
error: build failed

Это моя установка для тиса (очень маленькая, она как мир приветствия) проект):

Автомобиль go .томл 

[package]
name = "yewastrology"
version = "0.1.0"
authors = ["stephaneworkspace <s.bressani@bluewin.ch>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
yew = "0.11.0"
astrology = "0.1.24"

src / main.rs 

use astrology::{WorkingStorageYew, YewAction, YewAstro};
use yew::{
    html, Callback, ClickEvent, Component, ComponentLink, Html, ShouldRender,
};

struct App {
    clicked: bool,
    onclick: Callback<ClickEvent>,
}

enum Msg {
    Click,
}

impl Component for App {
    type Message = Msg;
    type Properties = ();

    fn create(_: Self::Properties, link: ComponentLink<Self>) -> Self {
        App {
            clicked: false,
            onclick: link.callback(|_| Msg::Click),
        }
    }

    fn update(&mut self, msg: Self::Message) -> ShouldRender {
        match msg {
            Msg::Click => {
                self.clicked = true;
                true // Indicate that the Component should re-render
            },
        }
    }

    fn view(&self) -> Html {
        let button_text: String = if self.clicked {
            // Ephem file and better path todo later !
            let ws = WorkingStorageYew::new(
                "/Users/stephanebressani/Code/Rust/yewastrology/data.json",
                "",
                550,
            );
            let ok = ws.yew_draw_chart(YewAction::Chart);
            let result = ok.0;
            result
        } else {
            "Click me!".to_string()
        };

        if !self.clicked {
            html! {
                <button onclick=&self.onclick>{ button_text }</button>
            }
        } else {
            html! {
                <h1>{ button_text }</h1>
            }
        }
    }
}

fn main() {
    yew::start_app::<App>();
}

и данные. json

{
        "year": 1999,
        "month": 12,
        "day": 31,
        "hourf64": 23.59,
        "hour": 23,
        "min": 59,
        "sec": 0.0,
        "lat": 46.0222,
        "lng": 6.14569
}

Для 0.1.5 (добавьте вручную math.h) источник не совместим, у вас есть совместимый?

Я только что попробовал первый в моем поиске на моей книге ma c (7 в результате поиска по другому пути)

Редактировать 2:

Я нашел это:

https://github.com/rust-lang/libc/issues/858

По определению, wasm32-unknown-unknown не имеет lib c. Если вы хотите использовать emscripten или wasi, вы можете использовать wasm32-unknown-emscripten или wasm32-wasi, оба из которых уже поддерживаются в ящике lib c.

Я пробовал с emscripter (проблема компилировать, потому что библиотека lib, ansi_term в моей машине go несовместима) и была той же проблемой, что и wasm32-unknown-unknown, проблема с math.h

1 Ответ

1 голос
/ 12 февраля 2020

Вы связали две вещи: -lm - флаг компоновщику для ссылки libm.so.6, библиотеки; math.h не найдена ошибка для заголовочного файла.

Скорее всего, вам не хватает пакета libc6-dev в вашей коробке Linux.

Поскольку вы не предоставили минимальную воспроизводимость Например, вот тот, который я попробовал, и он работает, как ожидалось. Макет проекта: 

├── build.rs
├── Cargo.toml
└── src
    ├── cmath.c
    └── main.rs

Автомобиль go Томл файл: 

[package]
name = "math-ffi"
version = "0.1.0"
authors = ["rustacean"]
edition = "2018"

[dependencies]
libc = "0.2"

[build-dependencies]
cc = "1.0"

Файл build.rs: 

fn main() {
    cc::Build::new()
        .include("/usr/include")  // standard location, YMMV
        .flag("-g")
        .flag("-Wall")
        .file("src/cmath.c")
        .compile("math_ffi");
}

Файл C: 

#include <math.h>

#define PI 3.14159265

double cos_radian(double x) {
    return cos(x * PI / 180);
}

И точка входа Rust: 

use libc::c_double;

extern "C"  {
    fn cos_radian(_: c_double) -> c_double;
}

fn main() {
    let res = unsafe {
        cos_radian(180.0)
    };
    println!("{}", res);
}

Он успешно строится и возвращает -1 правильно. И ldd показывает, что он связан с libm как следует: 

$ ldd target/debug/math-ffi
    linux-vdso.so.1 (0x00007ffc60db1000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8e889e3000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8e889c0000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8e889a6000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8e887b5000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f8e88a43000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8e88666000)
...