Yocto构建gnu-config-native时出现URL获取失败错误求解决

执行bitbake gnu-config-native时出现Git资源拉取失败，对应的配方代码如下：

SUMMARY = "gnu-configize"
DESCRIPTION = "Tool that installs the GNU config.guess / config.sub into a directory tree"
HOMEPAGE = "https://git.savannah.gnu.org/cgit/config.git"
SECTION = "devel"
LICENSE = "GPL-3.0-with-autoconf-exception"
LIC_FILES_CHKSUM = "file://config.guess;beginline=7;endline=27;md5=b75d42f59f706ea56d6a8e00216fca6a"

DEPENDS_class-native = "hostperl-runtime-native"

INHIBIT_DEFAULT_DEPS = "1"

SRCREV = "5256817ace8493502ec88501a19e4051c2e220b0"
PV = "20200117+git${SRCPV}"

SRC_URI = "git://git.savannah.gnu.org/git/config.git;protocol=https;branch=master \
           file://gnu-configize.in \
          "

S = "${WORKDIR}/git"
UPSTREAM_CHECK_COMMITS = "1"

CLEANBROKEN = "1"

do_compile[noexec] = "1"

do_install () {
    install -d ${D}${datadir}/gnu-config \
           ${D}${bindir}
    cat ${WORKDIR}/gnu-configize.in | \
        sed -e 's,@gnu-configdir@,${datadir}/gnu-config,g' \
            -e 's,@autom4te_perllibdir@,${datadir}/autoconf,g' > ${D}${bindir}/gnu-configize
    # In the native case we want the system perl as perl-native can't have built yet
    if [ "${PN}" != "gnu-config-native" -a "${PN}" != "nativesdk-gnu-config" ]; then
        sed -i -e 's,/usr/bin/env,${bindir}/env,g' ${D}${bindir}/gnu-configize
    fi
    chmod 755 ${D}${bindir}/gnu-configize
    install -m 0644 config.guess config.sub ${D}${datadir}/gnu-config/
}

PACKAGES = "${PN}"
FILES_${PN} = "${bindir} ${datadir}/gnu-config"

BBCLASSEXTEND = "native nativesdk"

抛出的错误与警告：

WARNING: gnu-config-native-20200117+gitAUTOINC+5256817ace-r0 do_fetch: Failed to fetch URL git://git.savannah.gnu.org/git/config.git;protocol=https;branch=master, attempting MIRRORS if available
ERROR: gnu-config-native-20200117+gitAUTOINC+5256817ace-r0 do_fetch: Bitbake Fetcher Error: FetchError('Unable to fetch URL from any source.', 'git://git.savannah.gnu.org/git/config.git;protocol=https;branch=master')

以下是具体解决思路：

• 网络连通性校验
  手动执行git clone https://git.savannah.gnu.org/git/config.git，确认能否正常克隆仓库。如果失败：

  • 检查防火墙、代理是否拦截了HTTPS请求；
  • 若使用代理，在conf/local.conf中添加代理配置：

    HTTP_PROXY="http://your-proxy-addr:port"
    HTTPS_PROXY="http://your-proxy-addr:port"
    

• 调整Git源URL格式
  将配方中SRC_URI的Git地址直接修改为纯HTTPS格式，避免协议转换的潜在问题：

  SRC_URI = "https://git.savannah.gnu.org/git/config.git;branch=master \
             file://gnu-configize.in \
            "
  

• 本地预克隆仓库供BitBake调用

  1. 手动克隆仓库到本地指定路径并切换到目标提交：

     git clone https://git.savannah.gnu.org/git/config.git /home/your-user/local-config-repo
     cd /home/your-user/local-config-repo
     git checkout 5256817ace8493502ec88501a19e4051c2e220b0
     

  2. 在conf/local.conf中添加覆盖配置，让BitBake直接使用本地仓库：

     SRC_URI_OVERRIDES="git://git.savannah.gnu.org/git/config.git=file:///home/your-user/local-config-repo"
     

• 校验BitBake Fetcher配置
  执行bitbake -e gnu-config-native | grep FETCHCMD_git，确认FETCHCMD_git指向系统正常的Git命令；同时确保BB_FETCHERS包含git，可在local.conf中添加BB_FETCHERS += "git"确保启用。

• 确认SRCREV有效性
  检查5256817ace8493502ec88501a19e4051c2e220b0这个提交ID是否存在于远程仓库的master分支。如果提交已被移除，需更新SRCREV为当前分支的有效提交哈希。

内容的提问来源于stack exchange，提问作者Manu Mamman