为 arm 交叉编译 iptables 的问题
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【中文标题】为 arm 交叉编译 iptables 的问题【英文标题】：Issues cross compiling iptables for arm 【发布时间】：2020-08-17 17:22:20 【问题描述】：我正在尝试为 ARM 交叉编译 iptables。我尝试过 1.6.1 和 1.8.5 版本，都有类似的问题。 iptables 具有三个依赖项，libmnl、libnftnl 和 libnfnetlink。我已确保所有这些都经过交叉编译并在这些位置可用 -
/home/badri/arm_libs/nftnl2
/home/badri/arm_libs/mnl
/home/badri/arm_libs/nfnetlink
我昨天有一个类似的问题，它与配置有关。但是现在我觉得配置是正确的，但不知道问题是什么。这个类似的问题可以在这里看到 -
Issues cross compiling libnftnl for arm
我对 iptables 的配置如下 -
./configure --build=x86_64-pc-linux-gnu --host=aarch64-linux-gnu --enable-static=no --prefix=/home/badri/arm_libs/iptables2 libmnl_LIBS=-L/home/badri/arm_libs/mnl/lib libmnl_CFLAGS=-I/home/badri/arm_libs/mnl/include/ libnftnl_LIBS=-L/home/badri/arm_libs/nftnl2/lib/ libnftnl_CFLAGS=-I/home/badri/arm_libs/nftnl2/include libnfnetlink_LIBS=-L/home/badri/arm_libs/nfnetlink/lib libnfnetlink_CFLAGS=-I/home/badri/arm_libs/nfnetlink/include
配置成功并导致这些错误。有人遇到过这个问题吗？
/home/badri/Downloads/iptables-1.8.5/utils/nfnl_osf.c:381: undefined reference to `nfnl_fill_hdr'
/home/badri/Downloads/iptables-1.8.5/utils/nfnl_osf.c:387: undefined reference to `nfnl_addattr_l'
/home/badri/Downloads/iptables-1.8.5/utils/nfnl_osf.c:389: undefined reference to `nfnl_query'
/home/badri/Downloads/iptables-1.8.5/utils/nfnl_osf.c:384: undefined reference to `nfnl_fill_hdr'
/home/badri/Downloads/iptables-1.8.5/utils/nfnl_osf.c:387: undefined reference to `nfnl_addattr_l'
/home/badri/Downloads/iptables-1.8.5/utils/nfnl_osf.c:389: undefined reference to `nfnl_query'
./configure --help 看起来像这样。
badri@badri-All-Series:~/Downloads/iptables-1.6.1$ ./configure --help
`configure' configures iptables 1.6.1 to adapt to many kinds of systems.
Usage: ./configure [OPTION]... [VAR=VALUE]...
To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE. See below for descriptions of some of the useful variables.
Defaults for the options are specified in brackets.
Configuration:
-h, --help display this help and exit
--help=short display options specific to this package
--help=recursive display the short help of all the included packages
-V, --version display version information and exit
-q, --quiet, --silent do not print `checking ...' messages
--cache-file=FILE cache test results in FILE [disabled]
-C, --config-cache alias for `--cache-file=config.cache'
-n, --no-create do not create output files
--srcdir=DIR find the sources in DIR [configure dir or `..']
Installation directories:
--prefix=PREFIX install architecture-independent files in PREFIX
[/usr/local]
--exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
[PREFIX]
By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc. You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.
For better control, use the options below.
Fine tuning of the installation directories:
--bindir=DIR user executables [EPREFIX/bin]
--sbindir=DIR system admin executables [EPREFIX/sbin]
--libexecdir=DIR program executables [EPREFIX/libexec]
--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
--localstatedir=DIR modifiable single-machine data [PREFIX/var]
--libdir=DIR object code libraries [EPREFIX/lib]
--includedir=DIR C header files [PREFIX/include]
--oldincludedir=DIR C header files for non-gcc [/usr/include]
--datarootdir=DIR read-only arch.-independent data root [PREFIX/share]
--datadir=DIR read-only architecture-independent data [DATAROOTDIR]
--infodir=DIR info documentation [DATAROOTDIR/info]
--localedir=DIR locale-dependent data [DATAROOTDIR/locale]
--mandir=DIR man documentation [DATAROOTDIR/man]
--docdir=DIR documentation root [DATAROOTDIR/doc/iptables]
--htmldir=DIR html documentation [DOCDIR]
--dvidir=DIR dvi documentation [DOCDIR]
--pdfdir=DIR pdf documentation [DOCDIR]
--psdir=DIR ps documentation [DOCDIR]
Program names:
--program-prefix=PREFIX prepend PREFIX to installed program names
--program-suffix=SUFFIX append SUFFIX to installed program names
--program-transform-name=PROGRAM run sed PROGRAM on installed program names
System types:
--build=BUILD configure for building on BUILD [guessed]
--host=HOST cross-compile to build programs to run on HOST [BUILD]
Optional Features:
--disable-option-checking ignore unrecognized --enable/--with options
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--enable-silent-rules less verbose build output (undo: "make V=1")
--disable-silent-rules verbose build output (undo: "make V=0")
--enable-dependency-tracking
do not reject slow dependency extractors
--disable-dependency-tracking
speeds up one-time build
--enable-static[=PKGS] build static libraries [default=no]
--enable-shared[=PKGS] build shared libraries [default=yes]
--enable-fast-install[=PKGS]
optimize for fast installation [default=yes]
--disable-libtool-lock avoid locking (might break parallel builds)
--disable-ipv4 Do not build iptables
--disable-ipv6 Do not build ip6tables
--disable-largefile Do not build largefile support
--enable-devel Install Xtables development headers
--enable-libipq Build and install libipq
--enable-bpf-compiler Build bpf compiler
--enable-nfsynproxy Build SYNPROXY configuration tool
--disable-nftables Do not build nftables compat
--disable-connlabel Do not build libnetfilter_conntrack
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
--without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)
--with-pic[=PKGS] try to use only PIC/non-PIC objects [default=use
both]
--with-gnu-ld assume the C compiler uses GNU ld [default=no]
--with-sysroot=DIR Search for dependent libraries within DIR
(or the compiler's sysroot if not specified).
--with-kernel=PATH Path to kernel source/build directory
--with-kbuild=PATH Path to kernel build directory
[[/lib/modules/CURRENT/build]]
--with-ksource=PATH Path to kernel source directory
[[/lib/modules/CURRENT/source]]
--with-xtlibdir=PATH Path where to install Xtables extensions
[[LIBEXECDIR/xtables]]
--with-pkgconfigdir=PATH
Path to the pkgconfig directory [[LIBDIR/pkgconfig]]
Some influential environment variables:
CC C compiler command
CFLAGS C compiler flags
LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries in a
nonstandard directory <lib dir>
LIBS libraries to pass to the linker, e.g. -l<library>
CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
you have headers in a nonstandard directory <include dir>
CPP C preprocessor
PKG_CONFIG path to pkg-config utility
PKG_CONFIG_PATH
directories to add to pkg-config's search path
PKG_CONFIG_LIBDIR
path overriding pkg-config's built-in search path
libnfnetlink_CFLAGS
C compiler flags for libnfnetlink, overriding pkg-config
libnfnetlink_LIBS
linker flags for libnfnetlink, overriding pkg-config
libmnl_CFLAGS
C compiler flags for libmnl, overriding pkg-config
libmnl_LIBS linker flags for libmnl, overriding pkg-config
libnftnl_CFLAGS
C compiler flags for libnftnl, overriding pkg-config
libnftnl_LIBS
linker flags for libnftnl, overriding pkg-config
YACC The `Yet Another Compiler Compiler' implementation to use.
Defaults to the first program found out of: `bison -y', `byacc',
`yacc'.
YFLAGS The list of arguments that will be passed by default to $YACC.
This script will default YFLAGS to the empty string to avoid a
default value of `-d' given by some make applications.
libnetfilter_conntrack_CFLAGS
C compiler flags for libnetfilter_conntrack, overriding
pkg-config
libnetfilter_conntrack_LIBS
linker flags for libnetfilter_conntrack, overriding pkg-config
Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.
Report bugs to the package provider.
badri@badri-All-Series:~/Downloads/iptables-1.6.1$
看起来它也期望 LDFLAGS 不应该是这种情况。如果我与选项一起配置
LDFLAGS=-L/home/badri/arm_libs/nfnetlink/lib LIBS=-lnfnetlink
我可以看到它似乎克服了 nfnl 的链接器错误。现在它卡在 nftnl 上。虽然理想情况下我希望现有的配置选项就足够了。
【问题讨论】：
【参考方案1】：这很难说到底是什么导致了您的问题，但我想说您可能缺少 -lnftnl 链接器选项 - 我的两分钱。
话虽如此，我尝试使用以下脚本交叉编译libmnl-1.0.4.tar.bz2、libnftnl-1.1.7.tar.bz2 和iptables-1.8.5.tar.bz2，所有三个编译都成功了：
build.sh:
#/bin/bash
CROSS_COMPILE=/opt/arm/9/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-
mkdir sysroot
PREFIX=$(pwd)/sysroot
wget https://www.netfilter.org/projects/libmnl/files/libmnl-1.0.4.tar.bz2
wget https://www.netfilter.org/projects/libnftnl/files/libnftnl-1.1.7.tar.bz2
wget https://www.netfilter.org/projects/iptables/files/iptables-1.8.5.tar.bz2
tar jxf libmnl-1.0.4.tar.bz2
tar jxf libnftnl-1.1.7.tar.bz2
tar jxf iptables-1.8.5.tar.bz2
pushd libmnl-1.0.4
CC=$CROSS_COMPILEgcc ./configure --build=x86_64-pc-linux-gnu --host=aarch64-linux-gnu --enable-static=no --prefix=$PREFIX
make install
popd
pushd libnftnl-1.1.7
CC=$CROSS_COMPILEgcc LIBMNL_CFLAGS="-I$PREFIX/include" LIBMNL_LIBS="-L$PREFIX/lib" ./configure --build=x86_64-pc-linux-gnu --host=aarch64-linux-gnu --enable-static=no --prefix=$PREFIX
make install
popd
pushd iptables-1.8.5
CC=$CROSS_COMPILEgcc libnftnl_CFLAGS="-I$PREFIX/include" libnftnl_LIBS="-L$PREFIX/lib -lnftnl" ./configure --build=x86_64-pc-linux-gnu --host=aarch64-linux-gnu --enable-static=no --prefix=$PREFIX
make install
popd
脚本完成后，iptables 在sysroot/sbin 中可用：
ls -gG sysroot/sbin/
total 1424
lrwxrwxrwx 1 17 Aug 17 14:24 arptables -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 arptables-nft -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 arptables-nft-restore -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 arptables-nft-save -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 arptables-restore -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 arptables-save -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ebtables -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ebtables-nft -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ebtables-nft-restore -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ebtables-nft-save -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ebtables-restore -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ebtables-save -> xtables-nft-multi
lrwxrwxrwx 1 20 Aug 17 14:24 ip6tables -> xtables-legacy-multi
lrwxrwxrwx 1 14 Aug 17 14:24 ip6tables-apply -> iptables-apply
lrwxrwxrwx 1 20 Aug 17 14:24 ip6tables-legacy -> xtables-legacy-multi
lrwxrwxrwx 1 20 Aug 17 14:24 ip6tables-legacy-restore -> xtables-legacy-multi
lrwxrwxrwx 1 20 Aug 17 14:24 ip6tables-legacy-save -> xtables-legacy-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ip6tables-nft -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ip6tables-nft-restore -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ip6tables-nft-save -> xtables-nft-multi
lrwxrwxrwx 1 20 Aug 17 14:24 ip6tables-restore -> xtables-legacy-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ip6tables-restore-translate -> xtables-nft-multi
lrwxrwxrwx 1 20 Aug 17 14:24 ip6tables-save -> xtables-legacy-multi
lrwxrwxrwx 1 17 Aug 17 14:24 ip6tables-translate -> xtables-nft-multi
lrwxrwxrwx 1 20 Aug 17 14:24 iptables -> xtables-legacy-multi
lrwxrwxrwx 1 20 Aug 17 14:24 iptables-legacy -> xtables-legacy-multi
lrwxrwxrwx 1 20 Aug 17 14:24 iptables-legacy-restore -> xtables-legacy-multi
lrwxrwxrwx 1 20 Aug 17 14:24 iptables-legacy-save -> xtables-legacy-multi
lrwxrwxrwx 1 17 Aug 17 14:24 iptables-nft -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 iptables-nft-restore -> xtables-nft-multi
lrwxrwxrwx 1 17 Aug 17 14:24 iptables-nft-save -> xtables-nft-multi
lrwxrwxrwx 1 20 Aug 17 14:24 iptables-restore -> xtables-legacy-multi
lrwxrwxrwx 1 17 Aug 17 14:24 iptables-restore-translate -> xtables-nft-multi
lrwxrwxrwx 1 20 Aug 17 14:24 iptables-save -> xtables-legacy-multi
lrwxrwxrwx 1 17 Aug 17 14:24 iptables-translate -> xtables-nft-multi
-rwxr-xr-x 1 373064 Aug 17 14:23 xtables-legacy-multi
lrwxrwxrwx 1 17 Aug 17 14:24 xtables-monitor -> xtables-nft-multi
-rwxr-xr-x 1 1079440 Aug 17 14:23 xtables-nft-multi
file sysroot/sbin/xtables-nft-multi
sysroot/sbin/xtables-nft-multi: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.7.0, not stripped
这可能有助于您调查您的问题或使用上述过程交叉编译 iptables。
【讨论】：
非常感谢弗兰特。它终于奏效了。我从你的剧本中得到了线索。它实际上是 - 包括 -lnftnl 到 libnftnl_LIBS 变量。 libnftnl_LIBS="-L$PREFIX/lib -lnftnl"。我对 lmnl 和 lnfnetlink 也做了同样的事情。 我的荣幸 - 我们幻影迷必须互相帮助。以上是关于为 arm 交叉编译 iptables 的问题的主要内容，如果未能解决你的问题，请参考以下文章