如何安装XML::Xerces？

Question

请参见第2部分，其中列出了安装模块续设员额时的最新错误。

通常，当我尝试使用标准cpan>安装XML::Xercers安装XML::Xerces CPAN模块时，经过一些处理后，我会收到以下错误消息：

XML-Xerces-2.7.0-0/samples/SEnumVal.pl
...
XML-Xerces-2.7.0-0/postSource.pl
XML-Xerces-2.7.0-0/xerces-headers.txt
Removing previously used /home/adoshi/.cpan/build/XML-Xerces-2.7.0-0

  CPAN.pm: Going to build J/JA/JASONS/XML-Xerces-2.7.0-0.tar.gz


   WARNING

You have not defined any of the following environment variables:
   XERCESCROOT
   XERCES_LIB
   XERCES_INCLUDE

These instruct me how to locate the Xerces header files, and the
Xerces dynamic library. If they are installed in a standard system
directory, I will located them without those variables.

However, if they have been installed in a non-standard location
(e.g. '/usr/include/xerces'), then I will need help. See the README
for more info.

Proceeding ...

   WARNING

You have not defined any of the following environment variables:
   XERCESCROOT
   XERCES_CONFIG

Without these I cannot find the config.status file that was used to
build your Xerces-C library. Without that file, I may not be able to properly
build the C++ glue files that come with Xerces.pm.

Proceeding anyway ...
Couldn't find XercesVersion.hpp in your include directory  at Makefile.PL line 1                                                                             88.
Running make test
  Make had some problems, maybe interrupted? Won't test
Running make install
  Make had some problems, maybe interrupted? Won't install

在将环境变量设置为/home/username/XML-Xerces-2.7.0-0/XML-Xerces-2.7.0-0/Xerces.pm后，请注意，这里不确定是否应该将环境变量指向Xerces.pm、Xerces.cpp或Xerces-extra.pm或Xerces.i，但目前正在将环境变量指向/home/username/XML-Xerces-2.7.0-0/XML-Xerces-2.7.0-0/Xerces.pm

在设置了前面提到的环境变量并输入cpan>install XML::Xerces之后，我得到以下消息：

CPAN: Storable loaded ok
Going to read /home/username/.cpan/Metadata
  Database was generated on Fri, 16 Oct 2009 18:27:06 GMT
Running install for module XML::Xerces
Running make for J/JA/JASONS/XML-Xerces-2.7.0-0.tar.gz
CPAN: Digest::MD5 loaded ok
CPAN: Compress::Zlib loaded ok
Checksum for /home/adoshi/.cpan/sources/authors/id/J/JA/JASONS/XML-Xerces-2.7.0-0.tar.gz ok
Scanning cache /home/adoshi/.cpan/build for sizes
XML-Xerces-2.7.0-0/
...
XML-Xerces-2.7.0-0/postSource.pl
XML-Xerces-2.7.0-0/xerces-headers.txt
Removing previously used /home/adoshi/.cpan/build/XML-Xerces-2.7.0-0

  CPAN.pm: Going to build J/JA/JASONS/XML-Xerces-2.7.0-0.tar.gz

Using XERCES_LIB = /home/adoshi/XML-Xerces-2.7.0-0/XML-Xerces-2.7.0-0/Xerces.pm
using XERCES_CONFIG: /home/adoshi/XML-Xerces-2.7.0-0/XML-Xerces-2.7.0-0/Xerces.pm

 - Found CXX      =
 - Found CXXFLAGS =
 - Found LDFLAGS  =

Couldn't find XercesVersion.hpp in your include directory  at Makefile.PL line 188, <CONF> line 6823.
Running make test
  Make had some problems, maybe interrupted? Won't test
Running make install
  Make had some problems, maybe interrupted? Won't install

注意：我已经尝试下载XML::Xerces并尝试再次安装它，无论是手动还是使用CPAN，但是我都收到了上面提到的错误消息。

可能的原因是什么，有什么建议可以反过来来处理这个问题呢？

更新：即使在构建Xerces-C之后，XML::Xerces模块也没有生成，并且正在收到以下错误消息。

[adoshi@upc01.dev XML-Xerces-2.7.0-0]$ perl Makefile.PL
Using XERCES_LIB = /adoshi/lib
Using XERCES_INCLUDE = /adoshi/include/xerces

   WARNING

You have defined the XERCESCROOT variable, but the file:

  XERCESCROOT/src/xercesc/config.status

 does not seem to point to the config.status file that was used to
 build your Xerces-C library. Without that file, I may not be able to
 properly build the C++ glue files that come with Xerces.pm.

Proceeding anyway ...
Couldn't find XercesVersion.hpp in your include directory /adoshi/include/xerces at Makefile.PL line 188.

Update2，这是一个正在发生的错误，它说有某种版本错配。

    Using XERCES_LIB = /home/adoshi/XML-Parser/Parser2/xerces-c_2_8_0-hppa-hpux-acc_3(1)/xerces-c_2_8_0-hppa-hpux-acc_3/lib
Using XERCES_INCLUDE = /home/adoshi/XML-Parser/Parser2/xerces-c_2_8_0-hppa-hpux-acc_3(1)/xerces-c_2_8_0-hppa-hpux-acc_3/include

   WARNING

You have defined the XERCESCROOT variable, but the file:

  XERCESCROOT/src/xercesc/config.status

 does not seem to point to the config.status file that was used to
 build your Xerces-C library. Without that file, I may not be able to
 properly build the C++ glue files that come with Xerces.pm.

Proceeding anyway ...
Using Xerces-C version info from /home/adoshi/XML-Parser/Parser2/xerces-c_2_8_0-hppa-hpux-acc_3(1)/xerces-c_2_8_0-hppa-hpux-acc_3/include/xercesc/util/XercesVersion.hpp
      *** Version Mismatch ***

You are attempt to build XML::Xerces-2.7.0-0 using Xerces-C-2.8.0,
this will most likely fail, so I am aborting.

You must use Xerces-C-2.7.0

Answer 1

这里有一个一般规则:任何命名为"ROOT“的环境变量都是在请求一个目录，而不是一个文件。

但是，似乎还没有安装Xerces库，这在安装perl模块之前是必需的。我将引用您提供的部分输出，作为您忽略了下一步该做什么的提示：

“.这些指示我如何定位Xerces头文件和Xerces动态库.”

“没有这些，我就找不到用于构建Xerces-C库的文件”

那么，你安装了Xerces C吗？在此之后，安装Perl模块将获得更好的结果。

Answer 2

您试过使用PPM安装XML::Xerces吗？