Question

我需要安装perl模块XML-LibXML。我已下载如下，并尝试安装。它表示无法链接libxml2。然后我下载了libxml2并安装然后再次尝试但是它也没有成功所以我应该知道如何链接这个安装的libxml2 我是否需要将libxml2安装目录（/ install / others / lib）添加到文件“/etc/ld.so.conf”中并运行以下命令更新动态加载程序缓存：ldconfig

bash-3.2$ wget http://search.cpan.org/CPAN/authors/id/S/SH/SHLOMIF/XML-LibXML-2.0019.tar.gz
bash-3.2$ tar zxvf XML-LibXML-2.0019.tar.gz
bash-3.2$ pwd
/install/others/XML-LibXML-2.0019

bash-3.2$ perl Makefile.PL LIBS='-L/install/others/lib' INC='-I/install/others/include'
enable native perl UTF8
Checking for ability to link against xml2...no
Checking for ability to link against libxml2...libxml2, zlib, and/or the Math library (-lm) have not been found.
Try setting LIBS and INC values on the command line
Or get libxml2 from
http://xmlsoft.org/
If you install via RPMs, make sure you also install the -devel
RPMs, as this is where the headers (.h files) are.

Also, you may try to run perl Makefile.PL with the DEBUG=1 parameter
to see the exact reason why the detection of libxml2 installation
failed or why Makefile.PL was not able to compile a test program.
bash-3.2$
bash-3.2$
bash-3.2$
bash-3.2$
bash-3.2$ perl Makefile.PL PREFIX=/install/others  LIBS='-L/install/others/lib' INC='-I/install/others/include'
enable native perl UTF8
Checking for ability to link against xml2...no
Checking for ability to link against libxml2...libxml2, zlib, and/or the Math library (-lm) have not been found.
Try setting LIBS and INC values on the command line
Or get libxml2 from
http://xmlsoft.org/
If you install via RPMs, make sure you also install the -devel
RPMs, as this is where the headers (.h files) are.

Also, you may try to run perl Makefile.PL with the DEBUG=1 parameter
to see the exact reason why the detection of libxml2 installation
failed or why Makefile.PL was not able to compile a test program.
bash-3.2$

以下是DEBUG = 1添加的输出

bash-3.2$ pwd
/install/others/XML-LibXML-1.31
bash-3.2$ perl Makefile.PL LIBS='-L/install/others/lib -lxml2 -lz -lm' INC='-I/install/others/include/libxml2' DEBUG=1
running xml2-config... xml2-config --version
failed
*** backticks call to 'xml2-config --version' failed at Makefile.PL line 212.
using fallback values for LIBS and INC
options:
  LIBS='-L/usr/local/lib -L/usr/lib -lxml2 -lz -lm'
  INC='-I/usr/local/include -I/usr/include'
If this is wrong, Re-run as:
  $ /usr/bin/perl Makefile.PL LIBS='-L/path/to/lib' INC='-I/path/to/include'

looking for -lxml2... /usr/bin/perl Makefile.PL 'INC=-I/usr/local/include -I/usr/include' 'LIBS=-L/usr/local/lib -L/usr/lib -lxml2 -lz -lm'
INC = -I/usr/local/include -I/usr/include
LIBS = -L/usr/local/lib -L/usr/lib -lxml2 -lz -lm
Writing Makefile for Conftest
make test 'OTHERLDFLAGS=-lxml2'
cp Conftest.pm blib/lib/Conftest.pm
/usr/bin/perl /usr/lib/perl5/5.8.8/ExtUtils/xsubpp  -typemap /usr/lib/perl5/5.8.8/ExtUtils/typemap  Conftest.xs > Conftest.xsc && mv Conftest.xsc Conftest.c
gcc -c  -I/usr/local/include -I/usr/include -D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -Wdeclaration-after-statement -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic   -DVERSION=\"1\" -DXS_VERSION=\"1\" -fPIC "-I/usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE"   Conftest.c
Conftest.xs:11: warning: return type defaults to âintâ
Running Mkbootstrap for Conftest ()
chmod 644 Conftest.bs
rm -f blib/arch/auto/Conftest/Conftest.so
gcc  -shared -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic Conftest.o -lxml2 -o blib/arch/auto/Conftest/Conftest.so       \
           -L/usr/local/lib -L/usr/lib -lxml2 -lz -lm   \

/usr/bin/ld: cannot find -lxml2
collect2: ld returned 1 exit status
make: *** [blib/arch/auto/Conftest/Conftest.so] Error 1
system call to 'make test 'OTHERLDFLAGS=-lxml2'' failed at Makefile.PL line 188.
no
libxml2 not found
Try setting LIBS and INC values on the command line
Or get libxml2 from
  http://www.libxml.org/
If you install via RPMs, make sure you also install the -devel
RPMs, as this is where the headers (.h files) are.
bash-3.2$

它不是在寻找我的本地目录，它正在寻找

INC = -I/usr/local/include -I/usr/include
LIBS = -L/usr/local/lib -L/usr/lib -lxml2 -lz -lm

注意：我没有超级用户权限，我的操作系统是Linux RedHat。

提前致谢

Answer 1

你需要头文件。

它们作为libxml源代码分发的一部分提供，例如： here。将libxml.../include目录解压缩到文件系统的某个位置，并将目录包含在make调用的-I标志中。错误消息还表明在您的系统上找不到zlib和libm。它们可能位于非标准/usr/lib...目录中，但将存在。在make调用的-L选项中包含找到的库。

Answer 2

如果您没有root访问权限，请尝试使用perlbrew：http://perlbrew.pl/

然后你可以轻松安装Alien :: XML :: LibXML（http://corion.net/perl-dev/Alien-XML-LibXML.html）

仅为您的本地Perl安装libxml。

在此之后，应成功安装XML-LibXML。

步骤：

1）使用perlbrew安装本地perl以保持系统perl干净

2）使用perlbrew的cpanm安装Alien :: XML :: LibXML

3）安装XML-LibXML

Answer 3

为您的Linux发行版安装Alien :: LibXML或下载LibXML二进制文件，

"export XMLPREFIX=$YOURLIBXMLPREFIX" $$ YOURLIBXMLPREFIX / bin / xml2-config没问题。

然后通过cpan

安装XML :: LibXML

无法链接libxml2

3 个答案: