【Buildroot】记一次编译出错gzip: popt-1.16.tar.gz: not in gzip format--更改br里面的默认下载地址

我在一次正常的编译过程中遇到了，如下的错误：

root@ubuntu:/home/liefyuan/Linux/rk356x_linux/buildroot# make -j16
make: Circular /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/iproute2-4.14.1/.stamp_configured <- busybox dependency dropped.
>>> popt 1.16 Extracting
gzip -d -c /home/liefyuan/Linux/rk356x_linux/buildroot/dl/popt-1.16.tar.gz | tar --strip-components=1 -C /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16   -xf -

gzip: /home/liefyuan/Linux/rk356x_linux/buildroot/dl/popt-1.16.tar.gz: not in gzip format
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors
package/pkg-generic.mk:159: recipe for target '/home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_extracted' failed
make: *** [/home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_extracted] Error 2


....


root@ubuntu:/home/liefyuan/Linux/rk356x_linux/buildroot# make popt-rebuild
rm -f /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_staging_installed
rm -f /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_target_installed
rm -f /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_images_installed
rm -f /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_host_installed
touch /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_built || true
rm -f /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_built
>>> popt 1.16 Extracting
gzip -d -c /home/liefyuan/Linux/rk356x_linux/buildroot/dl/popt-1.16.tar.gz | tar --strip-components=1 -C /home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16   -xf -

gzip: /home/liefyuan/Linux/rk356x_linux/buildroot/dl/popt-1.16.tar.gz: not in gzip format
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors
package/pkg-generic.mk:159: recipe for target '/home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_extracted' failed
make: *** [/home/liefyuan/Linux/rk356x_linux/buildroot/output/build/popt-1.16/.stamp_extracted] Error 2

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总结来说就是：在解压 buildroot/dl/popt-1.16.tar.gz 这个文件的时候，解压命令不好使了，没法解压，不像是gzip的格式！

好，那我拷贝出来直接解压看看：

liefyuan@ubuntu:~/work$ tar -xf popt-1.16.tar.gz 

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
liefyuan@ubuntu:~/work$ tar -zxf popt-1.16.tar.gz 

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now

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使用file命令看一下文件格式：

liefyuan@ubuntu:~/work$ file popt-1.16.tar.gz 
popt-1.16.tar.gz: HTML document, UTF-8 Unicode text, with very long lines
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哦豁，这居然是个HTML文档！

我看看其他正常的压缩文件是咋样的

liefyuan@ubuntu:~/work$ file buildroot-2022.05.tar.gz 
buildroot-2022.05.tar.gz: gzip compressed data, last modified: Mon Jun  6 20:21:50 2022, max compression, from Unix
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没问题，说明就是那个压缩文件有问题！
去源地址下载
通过在buildroot/package/popt/popt.mk文件可以知道：

################################################################################
#
# popt
#
################################################################################

POPT_VERSION = 1.16
POPT_SITE = http://rpm5.org/files/popt
POPT_INSTALL_STAGING = YES
POPT_LICENSE = MIT
POPT_LICENSE_FILES = COPYING
POPT_AUTORECONF = YES
POPT_GETTEXTIZE = YES
POPT_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)

POPT_CONF_ENV = ac_cv_va_copy=yes

ifeq ($(BR2_PACKAGE_LIBICONV),y)
POPT_CONF_ENV += am_cv_lib_iconv=yes
POPT_CONF_OPTS += --with-libiconv-prefix=$(STAGING_DIR)/usr
POPT_DEPENDENCIES += libiconv
endif

$(eval $(autotools-package))
$(eval $(host-autotools-package))
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文件地址在：http://rpm5.org/files/popt
文件2010年就在这里了，那应该文件没有问题！
我直接下载替换，看看情况

卧槽！直接下载的文件也不行啊！

liefyuan@ubuntu:~/work/qt-work$ tar -xvf popt-1.16.tar.gz 

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
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重新找到一个地址：http://ftp.rpm.org/popt/releases/historical/

这个网站下载的这个文件是没有问题的！

liefyuan@ubuntu:~/work/qt-work$ file popt-1.16.tar_2.gz 
popt-1.16.tar_2.gz: gzip compressed data, last modified: Tue May  4 20:56:51 2010, max compression, from Unix
liefyuan@ubuntu:~/work/qt-work$ tar -xvf popt-1.16.tar.gz 
popt-1.16/
popt-1.16/depcomp
popt-1.16/COPYING
popt-1.16/README
popt-1.16/popt.pc.in
....
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直接替换进去试试

make popt-rebuild
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没有问题！
估计是那个地址是有问题的！

把这个地址替换进去：http://ftp.rpm.org/popt/releases/historical/popt-1.16.tar.gz
替换：buildroot/package/popt/popt.mk文件里面的下载地址！