Apache HTTP安装故障排除指南合集详解

本文概述

• APR not found
• APR-util not found
• pcre-config for libpcre not found
• OpenSSL version is too old
• xml/apr_xml.c:35:19: fatal error: expat.h: No such file or directory
• configure: error: no acceptable C compiler found in $PATH
• nghttp2 version is too old

安装Apache HTTP总是很有趣。几天前, 我在CentOS VM上安装Apache 2.4, 遇到了多个错误。

我认为将其放在一起作为参考会很有帮助。

错误清单

• APR not found
• APR-util not found
• pcre-config for libpcre not found
• OpenSSL version is too old
• xml/apr_xml.c:35:19: fatal error: expat.h: No such file or directory
• configure: error: no acceptable C compiler found in $PATH
• nghttp2 version is too old

APR not found

[[email protected]handan httpd-2.4.25]# ./configure --enable-ssl
checking for chosen layout... Apache
checking for working mkdir -p... yes
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
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
configure: 
configure: Configuring Apache Portable Runtime library...
configure: 
checking for APR... no
configure: error: APR not found.  Please read the documentation.
[[email protected] httpd-2.4.25]#

APR代表” Apache Portable Runtime”, 需要从源代码进行编译。如果你与我处于同一情况, 那么以下人员将为你提供救助。

首先, 你需要安装APR。

• 使用wget下载最新版本的APR

wget https://www-eu.apache.org/dist/apr/apr-1.6.3.tar.gz .

• 解压缩下载的文件

gunzip -c apr-1.6.3.tar.gz | tar xvf -

• 它将创建一个新文件夹” apr-1.6.3″
• 进入并使用configure命令进行编译

./configure

这将需要几秒钟, 一旦完成, 你将得到提示(确保没有错误)。

• 最后一步是使用make命令进行安装

make
make install

完成后, 我尝试安装Apache并遇到另一个错误。

APR-util not found

[[email protected] httpd-2.4.25]# ./configure --enable-ssl --enable-so
checking for chosen layout... Apache
checking for working mkdir -p... yes
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
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
configure: 
configure: Configuring Apache Portable Runtime library...
configure: 
checking for APR... yes
  setting CC to "gcc"
  setting CPP to "gcc -E"
  setting CFLAGS to " -g -O2 -pthread"
  setting CPPFLAGS to " -DLINUX -D_REENTRANT -D_GNU_SOURCE"
  setting LDFLAGS to " "
configure: 
configure: Configuring Apache Portable Runtime Utility library...
configure: 
checking for APR-util... no
configure: error: APR-util not found.  Please read the documentation.
[[email protected] httpd-2.4.25]#

如果还出现”APR-util not found”错误, 则必须安装以下内容。

• 下载最新的APR-util来源

wget https://www-eu.apache.org/dist/apr/apr-util-1.6.1.tar.gz .

• 解压缩下载的gz文件

gunzip -c apr-util-1.6.1.tar.gz | tar xvf -

• 进入新创建的文件夹” apr-util-1.6.1″, 并使用以下命令进行安装

./configure --with-apr=/usr/local/apr/bin/apr-1-config
make
make install

尝试再次安装Apache, 但出现另一个错误。

pcre-config for libpcre not found

这就是我得到的。

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 how to run the C preprocessor... gcc -E
checking for gcc option to accept ISO C99... -std=gnu99
checking for pcre-config... false
configure: error: pcre-config for libpcre not found. PCRE is required and available from http://pcre.org/

PCRE代表Perl兼容正则表达式, 此错误很容易解决。你只需安装pcre-devel软件包。

yum install pcre-devel

尚未结束, 下一次尝试与OpenSSL相关的问题。

OpenSSL version is too old

checking whether to enable mod_slotmem_plain... no
checking whether to enable mod_ssl... checking dependencies
checking for OpenSSL... checking for user-provided OpenSSL base directory... ./configure: line 25426: cd: /usr/bin/openssl: Not a directory
/root/httpd-2.4.25
  adding "-I/root/httpd-2.4.25/include" to CPPFLAGS
  setting MOD_CFLAGS to "-I/root/httpd-2.4.25/include"
  setting ab_CFLAGS to "-I/root/httpd-2.4.25/include"
  adding "-L/root/httpd-2.4.25/lib" to LDFLAGS
  setting MOD_LDFLAGS to "-L/root/httpd-2.4.25/lib"
checking for OpenSSL version >= 0.9.8a... FAILED
configure: WARNING: OpenSSL version is too old
no
checking whether to enable mod_ssl... configure: error: mod_ssl has been requested but can not be built due to prerequisite failures
[[email protected] httpd-2.4.25]#

首先要确保你拥有的是我所用的最新版本的OpenSSL, 因此我需要安装devel软件包, 一切正常。

yum install openssl-devel

xml/apr_xml.c:35:19: fatal error: expat.h: No such file or directory

编译APR时, 出现此错误。

[[email protected] apr-util-1.6.1]# make
make[1]: Entering directory `/opt/temp/apr-util-1.6.1'
/bin/sh /usr/local/apr/build-1/libtool --silent --mode=compile gcc -g -O2 -pthread   -DHAVE_CONFIG_H  -DLINUX -D_REENTRANT -D_GNU_SOURCE   -I/opt/temp/apr-util-1.6.1/include -I/opt/temp/apr-util-1.6.1/include/private  -I/usr/local/apr/include/apr-1    -o xml/apr_xml.lo -c xml/apr_xml.c && touch xml/apr_xml.lo
xml/apr_xml.c:35:19: fatal error: expat.h: No such file or directory
 #include <expat.h>
                   ^
compilation terminated.
make[1]: *** [xml/apr_xml.lo] Error 1

如果遇到此错误, 则可以通过安装expat-devel软件包来解决。

yum install expat-devel

configure: error: no acceptable C compiler found in $PATH

找不到C编译器对于任何软件版本都是典型的, 你可以通过安装编译器来解决。

yum install gcc

nghttp2 version is too old

这是特定于你尝试使用HTTP / 2安装Apache的。你将收到以下错误。

checking whether to enable mod_http2... checking dependencies
checking for OpenSSL... (cached) yes
  setting MOD_LDFLAGS to "  -lssl -lcrypto -lrt -lcrypt -lpthread"
  setting MOD_CFLAGS to " "
  setting MOD_CPPFLAGS to "-DH2_OPENSSL"
checking for nghttp2... checking for user-provided nghttp2 base directory... none
checking for pkg-config along ... checking for nghttp2 version >= 1.2.1... FAILED
configure: WARNING: nghttp2 version is too old
no
checking whether to enable mod_http2... configure: error: mod_http2 has been requested but can not be built due to prerequisite failures

并且, 如果是这样, 你可以通过以下方式安装nghttp2进行修复。

• 从此处下载最新版本的nghttp2

wget https://github.com/nghttp2/nghttp2/releases/download/v1.37.0/nghttp2-1.37.0.tar.gz

• 解压缩下载的文件

tar -xvf nghttp2-1.37.0.tar.gz

• 它将创建一个新文件夹, 放入其中并运行以下命令

./configure
make
make install

一旦完成, 没有错误, 请再次使用HTTP2运行Apache源代码构建。应该没关系。

最后, 我能够成功安装Apache。如果你对学习Apache HTTP Server管理感兴趣, 请查看此在线课程。