这里，之所以研究这个问题，是因为我们的生产系统Linux环境下的tomcat日志里面，启动信息的地方有这么一个WARNING。

INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

这个虽然对应有没有什么影响，但是看到这个信息，总是有些不愉快。

关于APR是啥或者有什么好处，请参考这个官方文档介绍Apache Portable Runtime (APR) based Native library for Tomcat

为了将这个警告或者提醒信息去除，其实也很简单，只需要做几步配置就好：

1. 安装apr

2. 安装apr-util

3. 安装tomcat-native

首先，说下，我的环境信息：

1. Linux

[root@localhost bin]# uname -a

Linux localhost.localdomain 3.10.-.el7.x86_64 # SMP Thu Jan  :: EST  x86_64 x86_64 x86_64 GNU/Linux

2. Tomcat

[root@localhost bin]# pwd

/opt/shihuc/apache-tomcat-7.0./bin

[root@localhost bin]# ./version.sh

Using CATALINA_BASE:   /opt/shihuc/apache-tomcat-7.0.

Using CATALINA_HOME:   /opt/shihuc/apache-tomcat-7.0.

Using CATALINA_TMPDIR: /opt/shihuc/apache-tomcat-7.0./temp

Using JRE_HOME:        /usr/java/jdk1..0_144

Using CLASSPATH:       /opt/shihuc/apache-tomcat-7.0./bin/bootstrap.jar:/opt/shihuc/apache-tomcat-7.0./bin/tomcat-juli.jar

Server version: Apache Tomcat/7.0.

Server built:   Aug   :: UTC

Server number:  7.0.64.0

OS Name:        Linux

OS Version:     3.10.-.el7.x86_64

Architecture:   amd64

JVM Version:    1.8.0_144-b01

JVM Vendor:     Oracle Corporation

接下来，进行三步走策略，完成APR的环境配置。

1. 安装apr

在官网下载最新的apr，下载地址为http://mirrors.shu.edu.cn/apache//apr/apr-1.6.3.tar.gz

下载后，进行解压，并进入到根目录进行configure,make以及make install

[root@localhost apr-1.6.]# pwd

/opt/shihuc/apr-1.6.

这个操作，比较简单，不做过多描述。

2.安装apr-util

在官网下载最新的apr-util,下载地址为http://mirrors.shu.edu.cn/apache//apr/apr-util-1.6.1.tar.gz

下载后，进行解压，并进入到根目录进行configure，make以及make install

[root@localhost apr-util-1.6.]# pwd

/opt/shihuc/apr-util-1.6.

[root@localhost apr-util-1.6.]# ./configure

checking build system type... x86_64-pc-linux-gnu

checking host system type... x86_64-pc-linux-gnu

checking target system type... x86_64-pc-linux-gnu

checking for a BSD-compatible install... /usr/bin/install -c

checking for working mkdir -p... yes

APR-util Version: 1.6.

checking for chosen layout... apr-util

checking for gcc... gcc

checking whether the C compiler works... yes

checking for C compiler default output file name... a.out

checking for suffix of executables...

checking whether we are cross compiling... no

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether gcc accepts -g... yes

checking for gcc option to accept ISO C89... none needed

Applying apr-util hints file rules for x86_64-pc-linux-gnu

checking for APR... no

configure: error: APR could not be located. Please use the --with-apr option.

注意，这里报错了，并且提醒了，要加--with-apr选项进行配置。意思是说，告知apr-util配置的时候apr的路径在什么地方。

[root@localhost apr-util-1.6.]# ./configure --with-apr=/usr/local/apr

checking build system type... x86_64-pc-linux-gnu

checking host system type... x86_64-pc-linux-gnu

checking target system type... x86_64-pc-linux-gnu

checking for a BSD-compatible install... /usr/bin/install -c

checking for working mkdir -p... yes

APR-util Version: 1.6.

checking for chosen layout... apr-util

checking for gcc... gcc

checking whether the C compiler works... yes

checking for C compiler default output file name... a.out

checking for suffix of executables...

checking whether we are cross compiling... no

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether gcc accepts -g... yes

checking for gcc option to accept ISO C89... none needed

Applying apr-util hints file rules for x86_64-pc-linux-gnu

checking for APR... yes

  setting CPP to "gcc -E"

  adding "-pthread" to CFLAGS

  setting CPPFLAGS to " -DLINUX -D_REENTRANT -D_GNU_SOURCE"

checking how to run the C preprocessor... gcc -E

checking for grep that handles long lines and -e... /usr/bin/grep

checking for egrep... /usr/bin/grep -E

checking for ANSI C header files... yes

checking for sys/types.h... yes

checking for sys/stat.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for memory.h... yes

checking for strings.h... yes

checking for inttypes.h... yes

checking for stdint.h... yes

checking for unistd.h... yes

checking for ldap support...

checking for default DBM... sdbm (default)

checking for pg_config... /usr/bin/pg_config

  adding "-I/usr/include" to CPPFLAGS

  setting LDFLAGS to "-L/usr/lib64"

checking libpq-fe.h usability... no

checking libpq-fe.h presence... no

checking for libpq-fe.h... no

checking postgresql/libpq-fe.h usability... no

checking postgresql/libpq-fe.h presence... no

checking for postgresql/libpq-fe.h... no

checking sqlite3.h usability... no

checking sqlite3.h presence... no

checking for sqlite3.h... no

checking sqlite.h usability... no

checking sqlite.h presence... no

checking for sqlite.h... no

checking for odbc_config... /home/anaconda2/bin/odbc_config

  adding "-I/home/anaconda2/include" to CPPFLAGS

  setting LDFLAGS to "-L/home/anaconda2/lib"

  setting LIBS to "-L/home/anaconda2/lib -lodbc"

checking sql.h usability... yes

checking sql.h presence... yes

checking for sql.h... yes

checking for SQLAllocHandle in -lodbc... yes

  adding "-I/home/anaconda2/include" to APRUTIL_PRIV_INCLUDES

  setting LDADD_dbd_odbc to "-L/home/anaconda2/lib -lodbc -L/home/anaconda2/lib -lodbc"

checking Expat 1.95.x... yes

  setting APRUTIL_EXPORT_LIBS to "-lexpat"

  setting APRUTIL_LIBS to "-lexpat"

checking iconv.h usability... yes

checking iconv.h presence... yes

checking for iconv.h... yes

checking for type of inbuf parameter to iconv... char **

checking for iconv.h... (cached) yes

checking langinfo.h usability... yes

checking langinfo.h presence... yes

checking for langinfo.h... yes

checking for nl_langinfo... yes

checking for CODESET in langinfo.h... yes

checking whether APR has DSO support... yes

checking for library containing crypt... -lcrypt

checking if system crypt() function is threadsafe... no

checking for crypt_r... yes

checking style of crypt_r... struct_crypt_data

checking whether the compiler handles weak symbols... yes

checking for memset_s support... no

checking for explicit_bzero support... no

  adding "/usr/local/apr/lib/libapr-1.la" to APRUTIL_LIBS

  adding "-lrt" to APRUTIL_LIBS

  adding "-lcrypt" to APRUTIL_LIBS

  adding "-lpthread" to APRUTIL_LIBS

  adding "-ldl" to APRUTIL_LIBS

configure: creating ./config.status

config.status: creating Makefile

config.status: creating export_vars.sh

config.status: creating build/pkg/pkginfo

config.status: creating apr-util.pc

config.status: creating apu--config

config.status: creating include/private/apu_select_dbm.h

config.status: creating include/apr_ldap.h

config.status: creating include/apu.h

config.status: creating include/apu_want.h

config.status: creating test/Makefile

config.status: creating include/private/apu_config.h

config.status: executing default commands

[root@localhost apr-util-1.6.]#

这次OK了，没有再报错。

3. 安装tomcat-native

注意，我们的tomcat是tomcat7了，这个版本以及之后的版本，是不需要单独下载tomcat-native的包的，在tomcat的bin目录下，已经带上了，我们只需要在这个目录下进行解压和安装即可。

[root@localhost apache-tomcat-7.0.]# cd bin/

[root@localhost bin]# ll

总用量

-rw-r--r--.  root root   8月    bootstrap.jar

-rw-r--r--.  root root   8月    catalina.bat

-rwxr-xr-x.  root root   8月    catalina.sh

-rw-r--r--.  root root    8月    catalina-tasks.xml

-rw-r--r--.  root root   8月    commons-daemon.jar

-rw-r--r--.  root root  8月    commons-daemon-native.tar.gz

-rw-r--r--.  root root    8月    configtest.bat

-rwxr-xr-x.  root root    8月    configtest.sh

-rwxr-xr-x.  root root    8月    daemon.sh

-rw-r--r--.  root root    8月    digest.bat

-rwxr-xr-x.  root root    8月    digest.sh

-rw-r--r--.  root root    8月    setclasspath.bat

-rwxr-xr-x.  root root    8月    setclasspath.sh

-rw-r--r--.  root root    8月    shutdown.bat

-rwxr-xr-x.  root root    8月    shutdown.sh

-rw-r--r--.  root root    8月    startup.bat

-rwxr-xr-x.  root root    8月    startup.sh

-rw-r--r--.  root root   8月    tomcat-juli.jar

-rw-r--r--.  root root  8月    tomcat-native.tar.gz

-rw-r--r--.  root root    8月    tool-wrapper.bat

-rwxr-xr-x.  root root    8月    tool-wrapper.sh

-rw-r--r--.  root root    8月    version.bat

-rwxr-xr-x.  root root    8月    version.sh

将这个tomcat-native.tar.gz解压并进入到native目录下，进行configure，make以及make install。因为，我们的tomcat配置中，涉及apr的地方，启用了SSL，所以，我们的环境里面，必须要有SSL的支持能力。

<?xml version='1.0' encoding='utf-8'?>

<!--

  Licensed to the Apache Software Foundation (ASF) under one or more

  contributor license agreements.  See the NOTICE file distributed with

  this work for additional information regarding copyright ownership.

  The ASF licenses this file to You under the Apache License, Version 2.0

  (the "License"); you may not use this file except in compliance with

  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software

  distributed under the License is distributed on an "AS IS" BASIS,

  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  See the License for the specific language governing permissions and

  limitations under the License.

-->

<!-- Note:  A "Server" is not itself a "Container", so you may not

     define subcomponents such as "Valves" at this level.

     Documentation at /docs/config/server.html

 -->

<Server port="" shutdown="SHUTDOWN">

  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />

  <!-- Security listener. Documentation at /docs/config/listeners.html

  <Listener className="org.apache.catalina.security.SecurityListener" />

  -->

  <!--APR library loader. Documentation at /docs/apr.html -->

  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />

  <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->

  <Listener className="org.apache.catalina.core.JasperListener" />

  <!-- Prevent memory leaks due to use of particular java/javax APIs-->

  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />

  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />

  <!-- Global JNDI resources

       Documentation at /docs/jndi-resources-howto.html

  -->

下面的省略了。。。

所以SSL的环境必须要有，检查后发现，我的Linux系统，因为之前其他项目的需要，已经安装了openssl了，通过rpm查看。

[root@localhost native]# rpm -qa|grep openssl

openssl-devel-1.0.2k-.el7.x86_64

openssl098e-0.9.8e-.el7_0..x86_64

openssl-1.0.2k-.el7.x86_64

openssl-libs-1.0.2k-.el7.x86_64

[root@localhost native]#

系统当前已经安装有openssl了，版本为openssl-devel-1.0.2k-8.el7.x86_64。

或者通过这种方式，也可以查看是否安装openssl，直接执行openssl，看是否存在。那么openssl的安装路径是啥呢？

[root@localhost native]# which openssl

/home/anaconda2/bin/openssl

下面检查tomcat-native的JDK环境：

[root@localhost native]# echo $JAVA_HOME

/usr/java/jdk1..0_144

tomcat-native的依赖都有了，接下来，就是直接安装操作了。

[root@localhost native]# ./configure --with-apr=/usr/local/apr --with-ssl=/home/anaconda2/bin --with-java-home=/usr/java/jdk1.8.0_144

checking build system type... x86_64-unknown-linux-gnu

checking host system type... x86_64-unknown-linux-gnu

checking target system type... x86_64-unknown-linux-gnu

checking for a BSD-compatible install... /usr/bin/install -c

checking for working mkdir -p... yes

Tomcat Native Version: 1.1.

checking for chosen layout... tcnative

checking for APR... yes

  setting CC to "gcc"

  setting CPP to "gcc -E"

checking for JDK location (please wait)... /usr/java/jdk1..0_144

checking Java platform... checking Java platform...

checking for sablevm... NONE

  adding "-I/usr/java/jdk1.8.0_144/include" to TCNATIVE_PRIV_INCLUDES

checking os_type directory...  linux

  adding "-I/usr/java/jdk1.8.0_144/include/linux" to TCNATIVE_PRIV_INCLUDES

checking for gcc... gcc

checking whether the C compiler works... yes

checking for C compiler default output file name... a.out

checking for suffix of executables...

checking whether we are cross compiling... no

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether gcc accepts -g... yes

checking for gcc option to accept ISO C89... none needed

checking for OpenSSL library... using openssl from /home/anaconda2/bin/lib and /home/anaconda2/bin/include

checking OpenSSL library version... ok

checking for OpenSSL DSA support... no

  adding "-I/home/anaconda2/bin/include" to TCNATIVE_PRIV_INCLUDES

  setting TCNATIVE_LDFLAGS to "-L/home/anaconda2/bin/lib -Wl,-rpath,/home/anaconda2/bin/lib -lssl -lcrypto"

  adding "-DHAVE_OPENSSL" to CFLAGS

  setting TCNATIVE_LIBS to ""

  setting TCNATIVE_LIBS to " /usr/local/apr/lib/libapr-1.la -lrt -lcrypt  -lpthread -ldl"

configure: creating ./config.status

config.status: creating tcnative.pc

config.status: creating Makefile

config.status: executing default commands

接下来，就执行make以及make install了。

[root@localhost native]# make && make install

make[]: 进入目录“/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native”

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/address.lo -c src/address.c && touch src/address.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/bb.lo -c src/bb.c && touch src/bb.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/dir.lo -c src/dir.c && touch src/dir.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/error.lo -c src/error.c && touch src/error.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/file.lo -c src/file.c && touch src/file.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/info.lo -c src/info.c && touch src/info.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/jnilib.lo -c src/jnilib.c && touch src/jnilib.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/lock.lo -c src/lock.c && touch src/lock.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/misc.lo -c src/misc.c && touch src/misc.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/mmap.lo -c src/mmap.c && touch src/mmap.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/multicast.lo -c src/multicast.c && touch src/multicast.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/network.lo -c src/network.c && touch src/network.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/os.lo -c src/os.c && touch src/os.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/poll.lo -c src/poll.c && touch src/poll.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/pool.lo -c src/pool.c && touch src/pool.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/proc.lo -c src/proc.c && touch src/proc.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/shm.lo -c src/shm.c && touch src/shm.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/ssl.lo -c src/ssl.c && touch src/ssl.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/sslcontext.lo -c src/sslcontext.c && touch src/sslcontext.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/sslinfo.lo -c src/sslinfo.c && touch src/sslinfo.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/sslnetwork.lo -c src/sslnetwork.c && touch src/sslnetwork.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/sslutils.lo -c src/sslutils.c && touch src/sslutils.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/stdlib.lo -c src/stdlib.c && touch src/stdlib.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/thread.lo -c src/thread.c && touch src/thread.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o src/user.lo -c src/user.c && touch src/user.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o os/unix/system.lo -c os/unix/system.c && touch os/unix/system.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -o os/unix/uxpipe.lo -c os/unix/uxpipe.c && touch os/unix/uxpipe.lo

/bin/sh /usr/local/apr/build-/libtool --silent --mode=link  gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -g -O2 -DHAVE_OPENSSL   -I/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native/include -I/usr/java/jdk1..0_144/include -I/usr/java/jdk1..0_144/include/linux -I/home/anaconda2/bin/include  -I/usr/local/apr/include/apr-   -version-info ::    -o libtcnative-.la -rpath /usr/local/apr/lib src/address.lo src/bb.lo src/dir.lo src/error.lo src/file.lo src/info.lo src/jnilib.lo src/lock.lo src/misc.lo src/mmap.lo src/multicast.lo src/network.lo src/os.lo src/poll.lo src/pool.lo src/proc.lo src/shm.lo src/ssl.lo src/sslcontext.lo src/sslinfo.lo src/sslnetwork.lo src/sslutils.lo src/stdlib.lo src/thread.lo src/user.lo os/unix/system.lo os/unix/uxpipe.lo -L/home/anaconda2/bin/lib -Wl,-rpath,/home/anaconda2/bin/lib -lssl -lcrypto  /usr/local/apr/lib/libapr-.la -lrt -lcrypt  -lpthread -ldl

make[]: 离开目录“/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native”

make[]: 进入目录“/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native”

make[]: 对“local-all”无需做任何事。

make[]: 离开目录“/opt/shihuc/apache-tomcat-7.0./bin/tomcat-native-1.1.-src/jni/native”

/usr/local/apr/build-/mkdir.sh /usr/local/apr/include/apr- /usr/local/apr/lib/pkgconfig \

             /usr/local/apr/lib /usr/local/apr/bin

/usr/bin/install -c -m  tcnative.pc /usr/local/apr/lib/pkgconfig/tcnative-.pc

list=''; for i in $list; do \

        ( cd $i ; make DESTDIR= install ); \

done

/bin/sh /usr/local/apr/build-/libtool --mode=install /usr/bin/install -c -m  libtcnative-.la /usr/local/apr/lib

libtool: install: /usr/bin/install -c -m  .libs/libtcnative-.so.0.1. /usr/local/apr/lib/libtcnative-.so.0.1.

libtool: install: (cd /usr/local/apr/lib && { ln -s -f libtcnative-.so.0.1. libtcnative-.so. || { rm -f libtcnative-.so. && ln -s libtcnative-.so.0.1. libtcnative-.so.; }; })

libtool: install: (cd /usr/local/apr/lib && { ln -s -f libtcnative-.so.0.1. libtcnative-.so || { rm -f libtcnative-.so && ln -s libtcnative-.so.0.1. libtcnative-.so; }; })

libtool: install: /usr/bin/install -c -m  .libs/libtcnative-.lai /usr/local/apr/lib/libtcnative-.la

libtool: install: /usr/bin/install -c -m  .libs/libtcnative-.a /usr/local/apr/lib/libtcnative-.a

libtool: install: chmod  /usr/local/apr/lib/libtcnative-.a

libtool: install: ranlib /usr/local/apr/lib/libtcnative-.a

libtool: finish: PATH="/usr/local/cuda-7.5/bin:/home/mongo/mongodb-linux-x86_64-rhel70-3.4.4/bin:/usr/local/cuda-7.5/bin:/home/mongo/mongodb-linux-x86_64-rhel70-3.4.4/bin:/usr/local/cuda-7.5/bin:/home/mongo/mongodb-linux-x86_64-rhel70-3.4.4/bin:/usr/local/cuda-7.5/bin:/home/mongo/mongodb-linux-x86_64-rhel70-3.4.4/bin:/usr/local/cuda-7.5/bin:/home/mongo/mongodb-linux-x86_64-rhel70-3.4.4/bin:/home/cuda-8.0/bin:/home/anaconda2/bin:/usr/local/cuda-7.5/bin:/home/mongo/mongodb-linux-x86_64-rhel70-3.4.4/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/opt/apache-maven-3.3.9/bin:/home/mwwPro/tools/R2017a/bin/:/root/bin:/opt/shihuc/QANLP/idea-IC-172.4574.11/bin:/opt/apache-maven-3.3.9/bin:/opt/apache-maven-3.3.9/bin:/opt/apache-maven-3.3.9/bin:/opt/apache-maven-3.3.9/bin:/opt/apache-maven-3.3.9/bin:/sbin" ldconfig -n /usr/local/apr/lib

----------------------------------------------------------------------

Libraries have been installed in:

   /usr/local/apr/lib

If you ever happen to want to link against installed libraries

in a given directory, LIBDIR, you must either use libtool, and

specify the full pathname of the library, or use the '-LLIBDIR'

flag during linking and do at least one of the following:

   - add LIBDIR to the 'LD_LIBRARY_PATH' environment variable

     during execution

   - add LIBDIR to the 'LD_RUN_PATH' environment variable

     during linking

   - use the '-Wl,-rpath -Wl,LIBDIR' linker flag

   - have your system administrator add LIBDIR to '/etc/ld.so.conf'

See any operating system documentation about shared libraries for

more information, such as the ld() and ld.so() manual pages.

----------------------------------------------------------------------

[root@localhost native]#

所有的安装操作都OK了，接下来，还有一点，注意，不要遗忘了配置环境变量，就是APR的环境变量。

修改/etc/profile,然后做下面的红色内容的新增，写上apr的安装路径：

export LD_LIBRARY_PATH=/usr/local/apr/lib:/usr/local/cuda-7.5/lib64:$LD_LIBRARY_PATH

然后，source一下/etc/profile.启用这个新的环境配置。

所有的操作都结束了，最后就是验证是否APR生效。很简单，只需要将tomcat重启一下，查看catalina.out的日志，看看是否存在开篇提到的APR的那个提醒信息即可。我的环境配置，安装上述步骤，这个APR的提醒信息已经解除，的确不存在了。

下面对比一下，没有做上述APR配置和做了这个配置的启动日志有什么不同：

没有配置APR的日志：

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxProcessors' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'minProcessors' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'useURIValidationHack' to 'false' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Server version:        Apache Tomcat/7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Server built:          Aug   :: UTC

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Server number:         7.0.64.0

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: OS Name:               Linux

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: OS Version:            3.10.-.el7.x86_64

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Architecture:          amd64

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Java Home:             /usr/java/jdk1..0_144/jre

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: JVM Version:           1.8.0_144-b01

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: JVM Vendor:            Oracle Corporation

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: CATALINA_BASE:         /opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: CATALINA_HOME:         /opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.util.logging.config.file=/opt/shihuc/apache-tomcat-7.0./conf/logging.properties

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.endorsed.dirs=/opt/shihuc/apache-tomcat-7.0./endorsed

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Dcatalina.base=/opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Dcatalina.home=/opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.io.tmpdir=/opt/shihuc/apache-tomcat-7.0./temp

五月 ,  :: 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent

信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /home/cuda-8.0/lib64:/home/cuda-8.0/extras/CUPTI/lib64:/home/cudnn/lib64:/usr/local/cuda-7.5/lib64::/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

五月 ,  :: 下午 org.apache.coyote.AbstractProtocol init

信息: Initializing ProtocolHandler ["http-bio-8080"]

五月 ,  :: 下午 org.apache.coyote.AbstractProtocol init

信息: Initializing ProtocolHandler ["ajp-bio-8009"]

五月 ,  :: 下午 org.apache.catalina.startup.Catalina load

信息: Initialization processed in  ms

五月 ,  :: 下午 org.apache.catalina.core.StandardService startInternal

信息: Starting service Catalina

五月 ,  :: 下午 org.apache.catalina.core.StandardEngine startInternal

信息: Starting Servlet Engine: Apache Tomcat/7.0.

下面是做了这个APR配置后的启动日志：

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxProcessors' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'minProcessors' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'useURIValidationHack' to 'false' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Server version:        Apache Tomcat/7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Server built:          Aug   :: UTC

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Server number:         7.0.64.0

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: OS Name:               Linux

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: OS Version:            3.10.-.el7.x86_64

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Architecture:          amd64

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Java Home:             /usr/java/jdk1..0_144/jre

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: JVM Version:           1.8.0_144-b01

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: JVM Vendor:            Oracle Corporation

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: CATALINA_BASE:         /opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: CATALINA_HOME:         /opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.util.logging.config.file=/opt/shihuc/apache-tomcat-7.0./conf/logging.properties

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.endorsed.dirs=/opt/shihuc/apache-tomcat-7.0./endorsed

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Dcatalina.base=/opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Dcatalina.home=/opt/shihuc/apache-tomcat-7.0.

五月 ,  :: 下午 org.apache.catalina.startup.VersionLoggerListener log

信息: Command line argument: -Djava.io.tmpdir=/opt/shihuc/apache-tomcat-7.0./temp

五月 ,  :: 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent

信息: Loaded APR based Apache Tomcat Native library 1.1.33 using APR version 1.6.3.

五月 02, 2018 5:09:09 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent

信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].

五月 02, 2018 5:09:09 下午 org.apache.catalina.core.AprLifecycleListener initializeSSL

信息: OpenSSL successfully initialized (OpenSSL 1.0.2k  26 Jan 2017)

五月 ,  :: 下午 org.apache.coyote.AbstractProtocol init

信息: Initializing ProtocolHandler ["http-apr-8080"]

五月 ,  :: 下午 org.apache.coyote.AbstractProtocol init

信息: Initializing ProtocolHandler ["ajp-apr-8009"]

五月 ,  :: 下午 org.apache.catalina.startup.Catalina load

信息: Initialization processed in  ms

五月 ,  :: 下午 org.apache.catalina.core.StandardService startInternal

信息: Starting service Catalina

五月 ,  :: 下午 org.apache.catalina.core.StandardEngine startInternal

信息: Starting Servlet Engine: Apache Tomcat/7.0.

总结：

1. APR这个就算没有配置，也不影响tomcat的正常使用，无非就是性能稍微差点。

2. 在tomcat-native的configure操作中，若不正确配置--with-ssl这个选项的话，其他的就算都配置好了，依然会出现开篇提到的APR提醒信息。也就是说APR功能不启用。

3.关于tomcat启动日志中，下面的这些警告信息，我没有找到最终的解释，但是个人基于http://tomcat.apache.org/tomcat-7.0-doc/config/http.html#Standard_Implementation的介绍，认为是这些警告的信息涉及到的配置在tomcat7里面已经过期了，也就是说找不到相关的配置，即使有这个警告，也没什么问题。若有高人对这个有确切的了解，还请分享下。

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxProcessors' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'minProcessors' to '' did not find a matching property.

五月 ,  :: 下午 org.apache.catalina.startup.SetAllPropertiesRule begin

警告: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'useURIValidationHack' to 'false' did not find a matching property.

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