Yocto构建静态库失败，并显示错误“找不到匹配项". [英] Yocto build for a static library fails with error "No Match Found"

问题描述

我正在尝试在为静态库编写的图像中包含Yocto食谱.

I am trying to include a Yocto recipe in the image which I wrote for static library.

1. 在我自己的图层中创建了recipes-test/static文件夹.
2. 在此文件夹中创建了"static_0.1.bb"文件
3. 在"recipes-test/static"文件夹中创建的文件"文件夹
4. 复制了以下文件.

hello.c

char * hello (void)
{
  return "Hello";
}

world.c

char *world(void)
{
  return "World";
}

helloworld.h

helloworld.h

#ifndef HELLOWORLD_H
#define HELLOWORLD_H
char * hello (void);
char * world (void);
#endif

1. 创建的配方具有以下内容:

DESCRIPTION =简单的helloworld示例静态库"许可="MIT"LIC_FILES_CHKSUM =文件://$ {COMMON_LICENSE_DIR}/MIT; md5 = 0835ade698e0bcf8506ecda2f7b4f302"
SRC_URI ="file://hello.c \file://world.c \file://helloworld.h"

DESCRIPTION = "Simple helloworld example static library" LICENSE = "MIT" LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
SRC_URI = " file://hello.c \ file://world.c \ file://helloworld.h "

S = "${WORKDIR}"

do_compile() {
        ${CC} -c hello.c world.c
        ${AR} -cvq libhelloworld.a hello.o world.o
}

do_install() {
        install -d ${D}${includedir}
        install -d ${D}${libdir}
        install -m 0755 helloworld.h ${D}${includedir}
        install -m 0755 libhelloworld.a ${D}${libdir}
}

当我说 bitbake static 时，会在tmp/work文件夹中创建静态库

When i say bitbake static , static library is created in the tmp/work folder

当我将其包含在conf/local.conf文件中时，其内容如下:IMAGE_INSTALL_append =静态"

When i included it in conf/local.conf file with the following line: IMAGE_INSTALL_append = " static"

在根文件创建阶段构建失败，出现以下错误:

The build fails at the root file creating stage with the following error:

not found other for: 
not found modules for: 
not found deltainfo for: 
not found updateinfo for: 
oe-repo: using metadata from Tue 02 Jul 2019 03:54:50 AM UTC.
No module defaults found
No match for argument: static
Error: Unable to find a match

能帮我解决错误吗?

更新:更改IMAGE_INSTALL_append ="static-staticdev"后，出现以下错误:

Update: After changing IMAGE_INSTALL_append = " static-staticdev", i get the following error:

No module defaults found
--> Starting dependency resolution
--> Finished dependency resolution
Error: 
 Problem: package static-staticdev-0.1-r0.cortexa7t2hf_neon_vfpv4 requires static-dev = 0.1-r0, but none of the providers can be installed
  - conflicting requests
  - nothing provides static = 0.1-r0 needed by static-dev-0.1-r0.cortexa7t2hf_neon_vfpv4
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

推荐答案

Yocto会自动将安装在 $ {D} 中的文件拆分为不同的软件包.在您的情况下，helloworld.h将进入 $ {PN} -dev (在您的情况下， $ {PN} 等于静态，但是我写$ {PN}以避免混淆)和libhelloworld.a将进入 $ {PN} -staticdev ，但是由于没有其他文件，因此将没有名为 $ {PN} 的软件包为空.

Yocto will automatically split up the files installed in ${D} into different packages. In your case the helloworld.h will go into ${PN}-dev (${PN} equals static in your case, but I write ${PN} to avoid confusion) and libhelloworld.a will go into ${PN}-staticdev, but since there's no other files there will not be a package called ${PN} since it would be empty.

如果您确实希望静态库最终出现在图像中，请使用 IMAGE_INSTALL_append ="static-staticdev"

If you really want the static library to end up in the image, use IMAGE_INSTALL_append = "static-staticdev"

还有一个问题，普通的 $ {PN} 包中没有文件，这是默认设置，意味着不会创建此类文件.这是一个问题，因为 $ {PN} -dev 软件包对 $ {PN} 具有运行时依赖性.可以通过允许创建 $ {PN} (即使它为空)来解决此问题，方法是添加 ALLOW_EMPTY _ $ {PN} ="1"

There's also a problem that there is no file that will be included in the plain ${PN} package, which with the default settings means that no such package will be created. This is a problem since the ${PN}-dev package has a runtime dependency on ${PN}. This can be solved by allowing the creation of ${PN} even if it's empty, enable this by adding ALLOW_EMPTY_${PN} = "1"

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