5 
/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它时，它会产生下面的输出。我已经访问了 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并重新安装了 ruby​​ 安装了 libxml2 和 libxslt 软件包。

我一直在寻找解决方案，但我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

以下是请求的 mkmf.log 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 */
4

4 回答 4

4

我以某种方式解决了这个问题。我删除了除 zlib 之外的所有 rvm 包（libxml2、iconv、libxslt 等），rvm pkg uninstall <package>然后使用重新安装了 1.9.3rvm reinstall 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 libxml2、iconv、libxslt rvm 包不好？

于 2012-07-06T19:10:34.547 回答
3

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，并且在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',

但是你的 libxml2 库可能不在上面的路径中。所以你必须确保 extconf.rb 可以找到你的 libxml2 库 我的解决方案： 我的 centos 是 64 位，libxml2 安装在 /usr/lib64，我复制usr/lib64/libxml2.so到/usr/lib/libxml2.so 修复它。

于 2012-11-21T03:36:25.660 回答
0

核心问题似乎是您为 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 和端口管理的软件包进行核对，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”工作没有问题。

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。

于 2012-07-23T23:56:34.187 回答
0 
sudo yum groupinstall "Development tools"

（在 CentOS 7.0.1406 核心上）

于 2015-04-26T03:31:04.670 回答