だいぶ久しぶりに postfix の install. (postfixの設定は気が向いたら後日)

参考url

step1: download postfix

$ wget http://mirror.postfix.jp/postfix-release/official/postfix-3.5.2.tar.gz
 or
$ wget https://github.com/vdukhovni/postfix/archive/v3.5.2.tar.gz

$ tar -xvf postfix-3.5.2.tar.gz
$ cd postfix-3.5.2
$ less INSTALL

step2: required software

Oracle Berkeley DB and Cyrus SASL は、次の以前のエントリを参照。

install openldap 2.4.48 from src to centos8 for openam - end0tknr's kipple - 新web写経開発

ICU は、やはり次の以前のエントリを参照。

install php ver.7.3.15 and wordpress ver.5.3.2 - end0tknr's kipple - 新web写経開発

step3: add user and group

$ sudo useradd -c "Postfix User" -M -s /sbin/nologin postfix
$ id postfix
uid=1006(postfix) gid=1008(postfix) groups=1008(postfix)

$ sudo groupadd postdrop
$ cat /etc/group | grep post
postgres:x:1005:
postfix:x:1008:
postdrop:x:1009:

step4: make

$ make makefiles \
  CCARGS="-DUSE_SASL_AUTH -DUSE_CYRUS_SASL -DUSE_TLS -DHAS_MYSQL
          -I/usr/local/include \
      -I/usr/local/BerkeleyDB.5.1/include \ 
      -I/usr/local/cyrus_sasl/include \
      -I/usr/local/openssl_1_1_1/include \
      -I/usr/local/mysql/include" \
  AUXLIBS="-L/usr/local/lib \
       -L/usr/local/BerkeleyDB.5.1/lib \ 
           -L/usr/local/cyrus_sasl/lib \
       -L/usr/local/mysql/lib \
       -lsasl2 -lssl -lcrypto -lmysqlclient -lz -lm"
  :
No <db.h> include file found.
Install the appropriate db*-devel package first.
make: *** [Makefile.in:33: Makefiles] Error 1
make: *** [Makefile:22: makefiles] Error 2

上記のようなerrorが表示される為、DB_README に従い、makedefs を編集後、改めて make makefiles ～実行。

$ less REAAME_FILES/DB_README
    :
Warning: some Linux system libraries use Berkeley DB. If you compile Postfix
with a non-default Berkeley DB implementation, then every Postfix program will
dump core because either the system library or Postfix itself ends up using the
wrong version.

On Linux, you need to edit the makedefs script in order to specify a non-
default DB library. The reason is that the location of the default db.h include
file changes randomly between vendors and between versions, so that Postfix has
to choose the file for you.

$ vi makedefs
 Linux.[345].*) SYSTYPE=LINUX$RELEASE_MAJOR
                case "$CCARGS" in
                 *-DNO_DB*) ;;
                 *-DHAS_DB*) ;;
                 *) if [ -f /usr/include/db.h ]
                    then
                        : we are all set
                    elif [ -f /usr/include/db/db.h ]
                    then
                        CCARGS="$CCARGS -I/usr/include/db"
                    elif [ -f /usr/local/BerkeleyDB.5.1/include/db.h ]            ## ADD
                    then                                                          ## ADD
                        CCARGS="$CCARGS -I/usr/local/BerkeleyDB.5.1/include/db.h" ## ADD
                    else
                        # On a properly installed system, Postfix builds
                        # by including <db.h> and by linking with -ldb
                        echo "No <db.h> include file found." 1>&2
                        echo "Install the appropriate db*-devel package first." 1>&2
                        exit 1
                    fi


$ make makefiles \
  CCARGS="-DUSE_SASL_AUTH -DUSE_CYRUS_SASL -DUSE_TLS -DHAS_MYSQL \
          -I/usr/local/include -I/usr/local/BerkeleyDB.5.1/include \
      -I/usr/local/cyrus_sasl/include/sasl \
      -I/usr/local/openssl_1_1_1/include -I/usr/local/mysql/include" \
  AUXLIBS="-L/usr/local/lib -L/usr/local/BerkeleyDB.5.1/lib \
           -L/usr/local/cyrus_sasl/lib -L/usr/local/mysql/lib \
       -lsasl2 -lssl -lcrypto -lmysqlclient -lz -lm" \
  shared=yes\
  dynamicmaps=yes\
  install_root=/\
  config_directory=/usr/local/postfix/etc/postfix\
  command_directory=/usr/local/postfix/sbin\
  daemon_directory=/usr/local/postfix/libexec\
  data_directory=/usr/local/postfix/var/lib\
  html_directory=no\
  mail_owner=postfix\
  mailq_path=/usr/local/postfix/bin/mailq\
  manpage_directory=/usr/local/postfix/man\
  newaliases_path=/usr/local/postfix/bin/newaliases\
  queue_directory=/var/spool/postfix\
  readme_directory=no\
  sendmail_path=/usr/local/postfix/sbin/sendmail\
  setgid_group=postdrop\
  shlib_directory=/usr/local/postfix/lib\
  meta_directory=/usr/local/postfix/etc/postfix

※視認性の為、CCARGS や AUXLIBS の引数には改行を入れていますが
　make時に失敗しますので、実際には、半角スペース1コで各値を区切って下さい


$ make
  :
Wformat -Wno-comment -fcommon -fPIC -g -O -I. -DLINUX4 -c dict_nis.c
cc1: warning: /usr/local/BerkeleyDB.5.1/include/db.h: not a directory
dict_nis.c:42:10: fatal error: rpcsvc/ypclnt.h: No such file or directory
 #include <rpcsvc/ypclnt.h>
          ^~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:206: dict_nis.o] Error 1
make: *** [Makefile:109: update] Error 1


## centos8 glibc には rpcsvc/ypclnt.h (libnsl)が付属しない為
## 「sudo yum install libnsl2-devel 」を実行.
## (--enablerepo=PowerTools オプションも必要かも)
## refer to https://centosfaq.org/centos/compiling-latest-postfix-fails-on-c8/

$ sudo yum install  libnsl2-devel 

$ make install


bin/postconf: error while loading shared libraries: libmysqlclient.so.21:
   cannot open shared object file: No such file or directory

make installでerrorとなった為、以下を実施

$ sudo ln -s  /usr/local/mysql/lib/libmysqlclient.so.21 /usr/lib64/


## postfix の make install は対話式で
## 様々なパラメータを入力する必要がありますが、詳細は次のurlが分かりやすいです。
## https://qiita.com/kotazuck/items/f13b59771f6241fde39d

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install postfix ver.3.5.2 from source to centos 8

参考url

step1: download postfix

step2: required software

step3: add user and group

step4: make