cenos/Red Hat 7.4 编译keepalived，生成rpm包

首先下载keepalived-2.0.7，地址http://www.keepalived.org/download.html

接下来解压keepalived-2.0.7.tar.gz

        tar -xzpvf  keepalived-2.0.7.tar.gz

        cd keepalived-2.0.7

目录中有个INSTALL的文件，我们先打开。可以看到如果是red hat系列的linux，需要安装一些包。对于file-devel、 net-snmp-devel、net-snmp-devel、glib2-devel、json-c-devel、pcre2-devel以及后面说的一些包，都是根据特定的需求需要安装的一些包，根据需要安装。

Library dependencies
====================

  In order to compile Keepalived needs the following libraries :

  * OpenSSL,

Linux flavours
==============

RedHat based systems (RedHat Enterprise/CentOS/Fedora)
------------------------------------------------------
The following libraries need to be installed:
    openssl-devel libnl3-devel ipset-devel iptables-devel libnfnetlink-devel
For magic file identification support:
    file-devel
For SNMP support:
    net-snmp-devel
For DBUS support:
    glib2-devel
For JSON support:
    json-c-devel
For PCRE support
    pcre2-devel

For building the documentation, the following packages need to be installed:
    Fedora: python-sphinx (will pull in: python2-sphinx_rtd_theme)
    CentOS-and-friends: python-sphinx epel-release python-sphinx_rtd_theme
   For latex or pdf files, the following are also needed:
    Fedora: latexmk python-sphinx-latex
    CentOS-and-friends: latexmk texlive texlive-titlesec texlive-framed texlive-threeparttable texlive-wrapfig texlive-multirow
 

主要的，编译过程中需要gcc编译器，我这里gcc的版本是gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC)。如果是较低的版本，可能有问题。打包rpm需要rpmbuild这个工具，也需要安装rpm-build-4.11.3-32.el7.x86_64。

先看看configure有哪些选项，下面这些选项大家根据自己需要选择，通常默认的就可以满足需求了。

需要重点说一下的就是最后的Some influential environment variables的部分，这里是通过设置环境变量来影响configure的过程。主要的可以设置CC这个env。例如export CC=g++ 。

`configure' configures Keepalived 2.0.7 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]
  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
  --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/keepalived]
  --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

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")
  --disable-lvs-syncd     do not use LVS synchronization daemon
  --disable-lvs           do not use the LVS framework
  --disable-lvs-64bit-stats
                          do not use the LVS 64-bit stats
  --disable-vrrp          do not use the VRRP framework
  --enable-bfd            use the BFD framework
  --disable-fwmark        compile without SO_MARK support
  --enable-snmp           compile with SNMP support
  --enable-snmp-vrrp      compile with SNMP vrrp support
  --enable-snmp-keepalived
                          obsolete - use --enable-snmp-vrrp
  --enable-snmp-checker   compile with SNMP checker support
  --enable-snmp-rfc       compile with SNMP RFC2787 (VRRPv2) and SNMP RFC6527
                          (VRRPv3) support
  --enable-snmp-rfcv2     compile with SNMP RFC2787 (VRRPv2) support
  --enable-snmp-rfcv3     compile with SNMP RFC6257 (VRRPv3) support
  --disable-snmp-reply-v3-for-v2
                          disable RFC6257 responses for VRRPv2 instances
  --enable-dbus           compile with dbus support
  --enable-dbus-create-instance
                          compile with dbus support for creating instances
  --enable-sha1           compile with SHA1 support
  --enable-regex          build with HTTP_GET regex checking
  --enable-regex-timers   build with HTTP_GET regex timers
  --enable-json           compile with signal to dump configuration and stats
                          as json
  --disable-vrrp-auth     compile without VRRP authentication
  --disable-checksum-compat
                          compile without v1.3.6 and earlier VRRPv3 unicast
                          checksum compatibility
  --disable-routes        compile without ip rules/routes
  --enable-gnu-std-paths  use GNU standard paths for pid files etc
  --enable-dynamic-linking
                          compile with/without dynamically linked
                          libiptc/libipset
  --enable-libiptc-dynamic
                          compile with libiptc dynamically linked
  --disable-libipset-dynamic
                          compile with libipset statically linked
  --enable-libxtables-dynamic
                          compile with libxtables dynamically linked
  --enable-libnl-dynamic  compile with libnl dynamically linked
  --disable-libiptc       compile without libiptc
  --disable-libipset      compile without libipset
  --disable-libnl         compile without libnl
  --enable-strict-config-checks
                          build with strict configuration checking
  --disable-hardening     do not build with security hardening
  --optimise              compiler optimisation level
  --enable-mem-check      compile with memory alloc checking
  --enable-mem-check-log  compile with memory alloc checking writing to syslog
  --enable-debug          compile with debugging flags
  --enable-netlink-timers compile with netlink command timers
  --enable-smtp-alert-debug
                          compile with smtp-alert debugging
  --enable-stacktrace     compile with stacktrace support
  --enable-dump-threads   compile with thread dumping support
  --enable-select-debug   compile with select debugging support
  --enable-regex-debug    compile with regex debugging support
  --enable-tsm-debug      compile with TSM debugging support
  --enable-timer-debug    compile with timer debugging support
  --enable-profile        compile with profiling flags
  --enable-conversion-checks
                          compile with conversion warnings if sensible
  --enable-force-conversion-checks
                          compile with conversion warnings
  --enable-Werror         compile with warnings being errors
  --enable-dependency-tracking
                          do not reject slow dependency extractors
  --disable-dependency-tracking
                          speeds up one-time build

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-kernel-dir=DIR   path to linux kernel source directory
  --with-init=(upstart|systemd|SYSV|SUSE|openrc)
                          specify init type
  --with-systemdsystemunitdir=DIR
                          Directory for systemd service files

Some influential environment variables:
  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
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS     linker flags, e.g. -L if you have libraries in a
              nonstandard directory
  LIBS        libraries to pass to the linker, e.g. -l
  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I if
              you have headers in a nonstandard directory
  CPP         C preprocessor

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 .
Keepalived home page: .

我这里新建了bld目录，并在其中进行编译。

[root@MYSQL1 keepalived-2.0.7]# pwd
/root/keepalived-2.0.7
[root@MYSQL1 keepalived-2.0.7]# mkdir bld
[root@MYSQL1 keepalived-2.0.7]# cd bld
[root@MYSQL1 bld]# pwd
/root/keepalived-2.0.7/bld

../configure  --enable-snmp-checker --enable-snmp --enable-snmp-vrrp   --enable-bfd --enable-snmp-rfc --enable-snmp-rfcv2 --enable-snmp-rfcv3 --enable-dbus   --enable-sha1     --enable-regex   --enable-regex-timers  --enable-dependency-tracking --enable-json        --enable-stacktrace  --enable-dump-threads   --enable-select-debug  --enable-regex-debug  --enable-tsm-debug      --enable-strict-config-checks

可以看到一些输出，启用和禁用的选项。

没问题的话，就进入打包过程。2.0.7这个tar文件中有一个keepalived.spec.in文件，打rpm包主要就是靠着个文件。

需要注意的是，keepalived.spec.in这个文件有两处错误，如果不修改的话，会造成rpm打包失败。注意下面几行，需要将@WITH_REGEX修改为@WITH_REGEX_TRUE。具体原因，大家可以在上面configure的时候，使用sh -x  ../configure跟踪一下这个执行过程就可以发现：在根据keepalived.spec.in生成keepalived.spec的过程中，是根据我们设置的一些开关，来动态的将BuildRequires前面的前缀设置为#或者空。如果启用，则设置为空；如果禁用，则#就相当于将对应项注释掉了，不起作用。

@WITH_REGEX@BuildRequires: pcre2-devel
@WITH_REGEX@Requires: pcre2

@WITH_REGEX@CONFIG_OPTS="$CONFIG_OPTS --enable-regex"

还需要建几个文件夹，在rpmbuild打包过程中会用到，而且打出来的rpm包也放在其中的RPMS文件夹下：

[root@MYSQL1 rpmbuild]# pwd
/root/rpmbuild
[root@MYSQL1 rpmbuild]# ls -l
total 0
drwxr-xr-x 3 root root 30 Oct 24 11:02 BUILD
drwxr-xr-x 2 root root  6 Oct 24 11:03 BUILDROOT
drwxr-xr-x 3 root root 20 Oct 24 11:03 RPMS
drwxr-xr-x 2 root root 37 Oct 24 10:22 SOURCES
drwxr-xr-x 2 root root  6 Oct 24 10:21 SPECS
drwxr-xr-x 2 root root 40 Oct 24 11:03 SRPMS
[root@MYSQL1 rpmbuild]# 

然后开始打rpm包。等待输出结束，没有报错就可以了。

make rpm

这里值得说一些的地方就是，这里生成的Makefile提供了多个target，具体的选项可以通过grep ':' Makefile查看。