在 Centos 6.2 上使用 RVM 1.9.3 安装 nokogiri 时遇到问题答案

【问题标题】：Trouble installing nokogiri with RVM 1.9.3 on Centos 6.2在 Centos 6.2 上使用 RVM 1.9.3 安装 nokogiri 时遇到问题
【发布时间】：2012-07-06 10:56:14
【问题描述】：

/usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': 
The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.

我已经在我的 CentOS 6.2 服务器上使用 RVM 安装了 ruby 1.9.3。当我尝试运行gem install nokogiri 时，它会产生以下输出。我已经访问过 nokogiri 网站并使用 yum 安装了 libxml2 和 libxslt 依赖项：

sudo yum install -y gcc ruby-devel libxml2 libxml2-devel libxslt libxslt-devel

我还使用rvm pkg install 安装了 libxml2 和 libxslt 软件包，然后重新安装了 ruby。

我一直在寻找解决方案，但还没有找到任何东西。任何想法将不胜感激:)

Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
        ERROR: Failed to build gem native extension.

        /usr/local/rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
checking for libxml/parser.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/local/rvm/rubies/ruby-1.9.3-p194/bin/ruby
        --with-zlib-dir
        --without-zlib-dir
        --with-zlib-include
        --without-zlib-include=${zlib-dir}/include
        --with-zlib-lib
        --without-zlib-lib=${zlib-dir}/lib
        --with-iconv-dir
        --without-iconv-dir
        --with-iconv-include
        --without-iconv-include=${iconv-dir}/include
        --with-iconv-lib
        --without-iconv-lib=${iconv-dir}/lib
        --with-xml2-dir
        --without-xml2-dir
        --with-xml2-include
        --without-xml2-include=${xml2-dir}/include
        --with-xml2-lib
        --without-xml2-lib=${xml2-dir}/lib
        --with-xslt-dir
        --without-xslt-dir
        --with-xslt-include
        --without-xslt-include=${xslt-dir}/include
        --with-xslt-lib
        --without-xslt-lib=${xslt-dir}/lib
        --with-libxslt-config
        --without-libxslt-config
        --with-pkg-config
        --without-pkg-config
        --with-libxml-2.0-config
        --without-libxml-2.0-config
        --with-libiconv-config
        --without-libiconv-config
/usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:506:in `try_cpp'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:970:in `block in find_header'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:790:in `block in checking_for'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:284:in `block (2 levels) in postpone'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:284:in `block in postpone'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:280:in `postpone'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:789:in `checking_for'
        from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:969:in `find_header'
        from extconf.rb:114:in `<main>'


Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p194/gems/nokogiri-1.5.5 for inspection.
Results logged to /usr/local/rvm/gems/ruby-1.9.3-p194/gems/nokogiri-1.5.5/ext/nokogiri/gem_make.out

这里是 mkmf.log 中所要求的内容：

package configuration for libxslt
cflags: -I/usr/include/libxml2
ldflags:
libs: -lxslt -lz -lm -lxml2

package configuration for libxml-2.0
cflags: -I/usr/include/libxml2
ldflags:
libs: -lxml2

package configuration for libiconv is not found
"gcc -o conftest -I/usr/local/rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/x86_64-linux -I/usr/local/rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1/ruby/backward -I/usr/local/rvm/rubies/ruby-1.9.3-p194/include/ruby-1.9.1 -I. -I/opt/local/include/libxml2 -I/usr/local/include/libxml2 -I/usr/local/rvm/rubies/ruby-1.9.3-p194/include/libxml2 -I/opt/local/include -I/usr/local/include -I/usr/local/rvm/rubies/ruby-1.9.3-p194/include -I/usr/include -I/usr/include/libxml2 -I/usr/local/rvm/usr/include     -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration  -fPIC  -g -DXP_UNIX -O3 -Wall -Wcast-qual -Wwrite-strings -Wconversion -Wmissing-noreturn -Winline -I/usr/include/libxml2   -I/usr/include/libxml2   conftest.c  -L. -L/usr/local/rvm/rubies/ruby-1.9.3-p194/lib -Wl,-R/usr/local/rvm/rubies/ruby-1.9.3-p194/lib -L/opt/local/lib -Wl,-R/opt/local/lib -L/usr/local/lib -Wl,-R/usr/local/lib -L/usr/local/rvm/rubies/ruby-1.9.3-p194/lib -Wl,-R/usr/local/rvm/rubies/ruby-1.9.3-p194/lib -L/usr/lib -Wl,-R/usr/lib -L/usr/local/rvm/usr/lib -Wl,-R/usr/local/rvm/usr/lib -L.  -rdynamic -Wl,-export-dynamic       -lxslt -lz -lm -lxml2   -lxml2   -Wl,-R -Wl,/usr/local/rvm/rubies/ruby-1.9.3-p194/lib -L/usr/local/rvm/rubies/ruby-1.9.3-p194/lib -lruby  -lpthread -lrt -ldl -lcrypt -lm   -lc "
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetLineNo@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlIsExtenderGroup@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathFreeContext@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlMalloc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathIsNodeType@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrchr@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeDtd@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathCtxtCompile@LIBXML2_2.6.5'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlSplitQName2@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashUpdateEntry@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathEvalPredicate@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlRealloc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathContextSetCache@LIBXML2_2.6.25'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeURI@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlAddPrevSibling@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFindCharEncodingHandler@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashFree@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlSetProp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `valuePop@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathIsNaN@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeIDTable@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashRemoveEntry2@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPtrEval@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNextAncestor@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathInit@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashScan@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlOutputBufferCreateFd@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathCompiledEval@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashAddEntry3@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathFreeParserContext@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathErr@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDictCreateSub@LIBXML2_2.6.5'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDocSetRootElement@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathObjectCopy@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDictReference@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPtrNewContext@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewText@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewComment@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlOutputBufferClose@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBufferCat@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNodeDumpOutput@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashLookup3@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHasNsProp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlIsDigitGroup@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `htmlDocContentDumpOutput@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathRegisterFunc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrPrintf@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrndup@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlSearchNs@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewDocNode@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlValidateQName@LIBXML2_2.5.4'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlMutexLock@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNodeSetAddUnique@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlValidateNCName@LIBXML2_2.5.4'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNodeAddContent@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetID@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathRegisterFuncLookup@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeRefTable@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrdup@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlModuleSymbol@LIBXML2_2.6.17'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashUpdateEntry2@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBufferFree@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewDocText@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlUnlinkNode@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewChild@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNodeGetBase@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNodeSetMerge@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlMutexUnlock@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeNode@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrstr@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDictLookup@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGenericError@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBufferWriteQuotedString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewDocPI@LIBXML2_2.6.15'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDocGetRootElement@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNumberFunction@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlIsBaseCharGroup@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNewContext@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathWrapNodeSet@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNodeSetContent@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetIntSubset@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlParseURI@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetDtdAttrDesc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBufferAdd@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlParseDocument@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathFreeNodeSet@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashCreate@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathCastToString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlCheckFilename@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `htmlDocContentDumpFormatOutput@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewMutex@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlLoadExternalEntity@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlModuleOpen@LIBXML2_2.6.17'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathCompile@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `htmlNewDoc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathStringFunction@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDocCopyNode@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlAddID@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewNs@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewParserCtxt@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathConvertString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewNsProp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetDocEntity@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNodeGetSpacePreserve@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathOrderDocElems@LIBXML2_2.5.6'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNewParserContext@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDictCreate@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFree@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathRegisterFuncNS@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathDebugDumpObject@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDictQLookup@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGenericErrorContext@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathEvalExpression@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `htmlNewDocNoDtD@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashLookup2@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlOutputBufferWriteString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlOutputBufferCreateFilename@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrncat@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrlen@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlCharInRange@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewDoc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlAddChild@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetCharEncodingName@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathRegisterVariableLookup@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathFreeCompExpr@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNewCString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrncasecmp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXIncludeProcessFlags@LIBXML2_2.6.3'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlIsCombiningGroup@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNodeSetCreate@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashScanFull@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `inputPush@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrEqual@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `valuePush@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetNsList@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlIsBlankNode@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlURIEscapeStr@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathCmpNodes@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlCreateURI@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNextPrecedingSibling@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathIsInf@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDictFree@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBufferCCat@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathCompiledEvalToBoolean@LIBXML2_2.6.27'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlOutputBufferCreateFile@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlSaveUri@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewDocProp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeParserCtxt@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeMutex@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewDocNodeEatName@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNodeSetAdd@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStringTextNoenc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlSearchNsByHref@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathStringEvalNumber@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewCDataBlock@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNewValueTree@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBufferCreate@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashAddEntry2@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeNodeList@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNewString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStringText@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathEval@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlOutputBufferFlush@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBufferContent@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNsLookup@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetProp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlParserGetDirectory@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlUTF8Strloc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashRemoveEntry@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathFreeObject@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNewBoolean@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlUTF8Strpos@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrncmp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlIsID@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathFunctionLookupNS@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlCtxtUseOptions@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlGetNsProp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathCastNodeToString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNewTextLen@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNodeListGetString@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashAddEntry@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlAllocOutputBuffer@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlModuleClose@LIBXML2_2.6.17'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlSetNsProp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathConvertNumber@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrcasecmp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlNodeGetContent@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrcmp@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlCreateIntSubset@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlFreeDoc@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlCopyCharMultiByte@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashUpdateEntry3@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlDictOwns@LIBXML2_2.6.0'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStrcat@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlStringCurrentChar@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlXPathNewNodeSet@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `htmlSetMetaEncoding@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlHashLookup@LIBXML2_2.4.30'
/usr/local/rvm/usr/lib/libxslt.so: undefined reference to `xmlBuildURI@LIBXML2_2.4.30'
collect2: ld returned 1 exit status
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main() {return 0;}
/* end */

【问题讨论】：

你能粘贴mkmg.log的内容吗
您需要提供 mkmf.log 文件的内容，以便任何人给您建议。

标签： ruby centos rvm nokogiri libxml2

【解决方案1】：

不知何故，我解决了这个问题。我使用 rvm pkg uninstall <package> 删除了除 zlib 之外的所有 rvm 包（libxml2、iconv、libxslt 等），然后我使用 rvm reinstall 1.9.3 重新安装了 1.9.3

然后我做了一个gem install nokogiri，它工作得很好......

我不完全明白为什么它现在可以工作，也许是 libxml2、iconv、libxslt rvm 包不好？

【讨论】：

我在我的环境中做了一些与这些库相关的更改，因为我的 Ruby 安装被破坏了。重新安装后，nokogiri 安装就好了，谢谢。
有没有办法一次性卸载除zlib 之外的所有rvm 包？谢谢

【解决方案2】：

原因是gem install nokogiri调用path/to/your/gems/ruby-1.9.3-p194/gems/nokogiri-1.5.5/ext/nokogiri/extconf.rb，并在extconf.rb文件中，

LIB_DIRS = [ # 首先在 /opt/local 中搜索 macports '/opt/local/lib',
# Then search /usr/local for people that installed from source
'/usr/local/lib',

# Check the ruby install locations
LIBDIR,

# Finally fall back to /usr
'/usr/lib',   

但您的 libxml2 库可能不在上述路径中。因此您必须确保 extconf.rb 可以找到您的 libxml2 库 我的解决方案： 我的centos是64位的，libxml2安装在/usr/lib64，我把usr/lib64/libxml2.so复制到/usr/lib/libxml2.so修复。

【讨论】：

【解决方案3】：

核心问题似乎是为 Lion 编译的 rvm/brew/port/whatever 二进制文件将具有一些过时/删除的库依赖项，从而导致更高级别软件的编译和运行时问题。我在我的系统上修复了这个问题，方法是对我所有的 brew 和端口管理的包进行核对，重新编译/重新安装我的所有依赖项，重新编译我的 RVM 管理的 ruby 1.9.3-p194，最后“gem install nokogiri”没有问题。

我浪费了很多时间试图说服我过时的编译包工作。相反，只需重新安装上述内容（确保您实际上是在重新编译/链接），就可以了。

【讨论】：

你的意思是重新安装 ruby 1.9.3-p194 吗？我已经尝试通过 rvm 执行此操作，但还没有解决问题？这可能是因为它没有重新编译/链接，如果是这样，我如何确保它正在重新编译/链接？
您还必须卸载您可能已经随 RVM 安装的所有依赖包（libxml2、libiconv 等）

【解决方案4】：

sudo yum groupinstall "Development tools"

（在 CentOS 7.0.1406 内核上）

【讨论】：