使用wxWebConnect的Linux动态链接错误
使用wxWebConnect的Linux动态链接错误
提问于 2010-12-03 15:28:43
我使用并开发了wxWebConnect和Python绑定(参见http://github.com/jonmmorgan/wxwebconnect/和http://github.com/jonmmorgan/pywebconnect/)。它们以前都是建立在Linux上的。但是，当添加对XRC处理程序的支持时，Python程序会在加载带有错误的.so文件时崩溃：
undefined symbol: _ZN22wxWebControlXmlHandlerC1Ev这个库是在Mac和Windows上构建并正确运行的，因为修改是为了支持XRC。
造成此问题的原因似乎是类wxWebControlXmlHandler (请参阅https://github.com/jonmmorgan/wxwebconnect/blob/master/xh_webcontrol.cpp)的构造函数未包含在构建的共享对象文件中。在xh_webcontrol.o上运行nm显示，符号位于该对象文件的文本部分，而该对象文件是链接到共享对象的对象文件之一。但是，在共享对象文件上运行nm显示它是未定义的，这就是造成崩溃的原因。
我不明白为什么没有将构造函数包含在共享对象文件中，因为它显然是必需的(而且我知道构造函数是在webcontrol.cpp中调用的)。这有什么好的理由吗？我是否可以或应该做什么来强制将构造函数包括在共享对象文件中并导出？
用于构建(生成的setuptools)的命令：
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/gtk/wc_wrap.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/gtk/wc_wrap.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/dom.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/dom.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/nsimpl.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/nsimpl.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/promptservice.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/promptservice.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/protocolhandler.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/protocolhandler.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/webcontrol.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/webcontrol.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/webframe.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/webframe.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/webprefs.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/webprefs.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/webconnect/xh_webcontrol.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/xh_webcontrol.o -pthread -O3 -pthread
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DSWIG_TYPE_TABLE=_wxPython_table -DSWIG_PYTHON_OUTPUT_TUPLE -DWXP_USE_THREAD=1 -UNDEBUG -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -Iinclude -Isrc -I/usr/lib/wx/include/gtk2-unicode-release-2.8 -I/usr/include/wx-2.8 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -Icontrib/wc -Icontrib/wc/webconnect -I/usr/include/xulrunner-1.9.2.11 -I/usr/include/python2.6 -c contrib/wc/pyprotocolhandler.cpp -o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/pyprotocolhandler.o -pthread -O3 -pthread
g++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/gtk/wc_wrap.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/dom.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/nsimpl.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/promptservice.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/protocolhandler.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/webcontrol.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/webframe.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/webprefs.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/webconnect/xh_webcontrol.o build-gtk2.unicode/temp.linux-i686-2.6/contrib/wc/pyprotocolhandler.o -L/usr/X11R6/lib -lwx_gtk2u_richtext-2.8 -lwx_gtk2u_aui-2.8 -lwx_gtk2u_xrc-2.8 -lwx_gtk2u_qa-2.8 -lwx_gtk2u_html-2.8 -lwx_gtk2u_adv-2.8 -lwx_gtk2u_core-2.8 -lwx_baseu_xml-2.8 -lwx_baseu_net-2.8 -lwx_baseu-2.8 -lwx_gtk2u_xrc-2.8 -o /home/jmmorgan/wxwebconnect/wxPython-src-2.8.11.0/wxPython/wx/_wc.so -pthread -Wl,-Bsymbolic-functions回答 1
Stack Overflow用户
发布于 2010-12-03 16:23:08
尝试将您的对象文件放入-Wl,--whole-archive -Wl,--no-whole-archive部分。
man ld
--whole-archive
对于命令行中在--整个存档选项之后提到的每个归档，在链接中包含存档中的每个对象文件，而不是搜索所需的目标文件。这通常用于将存档文件转换为共享库，迫使每个对象都包含在结果共享库中。此选项可多次使用。
当使用gcc的这个选项时，有两个注释:第一，gcc不知道这个选项，所以你必须使用-Wl，-完整存档。第二，不要忘记在你的档案列表之后使用-Wl，不完整的存档，因为gcc将自己的档案列表添加到您的链接中，您可能不希望这个标志也影响到这些。。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/4347000
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