log4cxx的链接器错误
log4cxx的链接器错误
提问于 2016-07-07 12:43:14
我想使用Apache log4cxx，但遇到了一个问题。我在Debian8上运行并安装了log4cxx using
apt-get install liblog4cxx10-dev我已经将Documentation Page中的一个代码片段嵌入到以下代码中：
#include <log4cxx/logger.h>
#include <math.h>
int main(int argc, char* argv[]) {
log4cxx::LoggerPtr logger(log4cxx::Logger::getLogger("com.foo"));
int i = 10;
const char* region = "World";
LOG4CXX_INFO(logger, "Simple message text.")
LOG4CXX_INFO(logger, "Hello, " << region)
LOG4CXX_DEBUG(logger, L"Iteration " << i)
LOG4CXX_DEBUG(logger, "e^10 = " << std::scientific << exp(10.0))
LOG4CXX_WARN(logger, L"" << i << L" is the number of the iteration.")
return 0;
}当使用Eclipse CDT (从源代码构建的gcc 5.3.0 )编译时，我得到以下链接器错误：
make all
Building file: ../src/tester.cxx
Invoking: GCC C++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/tester.d" -MT"src/tester.o" -o "src/tester.o" "../src/tester.cxx"
Finished building: ../src/tester.cxx
Building target: logtest
Invoking: GCC C++ Linker
g++ -L/usr/lib/x86_64-linux-gnu -o "logtest" ./src/tester.o -llog4cxx
./src/tester.o: In function `main':
/home/andand/workspace/logtest/Debug/../src/tester.cxx:9: undefined reference to `log4cxx::helpers::MessageBuffer::str[abi:cxx11](log4cxx::helpers::CharMessageBuffer&)'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:9: undefined reference to `log4cxx::Logger::forcedLog(log4cxx::helpers::ObjectPtrT<log4cxx::Level> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, log4cxx::spi::LocationInfo const&) const'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:10: undefined reference to `log4cxx::helpers::MessageBuffer::str[abi:cxx11](log4cxx::helpers::CharMessageBuffer&)'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:10: undefined reference to `log4cxx::Logger::forcedLog(log4cxx::helpers::ObjectPtrT<log4cxx::Level> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, log4cxx::spi::LocationInfo const&) const'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:11: undefined reference to `log4cxx::helpers::MessageBuffer::str[abi:cxx11](std::basic_ostream<wchar_t, std::char_traits<wchar_t> >&)'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:11: undefined reference to `log4cxx::Logger::forcedLog(log4cxx::helpers::ObjectPtrT<log4cxx::Level> const&, std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, log4cxx::spi::LocationInfo const&) const'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:12: undefined reference to `log4cxx::helpers::MessageBuffer::str[abi:cxx11](std::ostream&)'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:12: undefined reference to `log4cxx::Logger::forcedLog(log4cxx::helpers::ObjectPtrT<log4cxx::Level> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, log4cxx::spi::LocationInfo const&) const'
/home/andand/workspace/logtest/Debug/../src/tester.cxx:13: undefined reference to `log4cxx::helpers::MessageBuffer::str[abi:cxx11](std::basic_ostream<wchar_t, std::char_traits<wchar_t> >&)'
makefile:45: recipe for target 'logtest' failed
/home/andand/workspace/logtest/Debug/../src/tester.cxx:13: undefined reference to `log4cxx::Logger::forcedLog(log4cxx::helpers::ObjectPtrT<log4cxx::Level> const&, std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, log4cxx::spi::LocationInfo const&) const'
collect2: error: ld returned 1 exit status
make: *** [logtest] Error 1我仔细检查了apt安装库的位置：
root@starsim-dev:/home/andand# find / -name *log4cxx*
/usr/lib/x86_64-linux-gnu/liblog4cxx.a
/usr/lib/x86_64-linux-gnu/liblog4cxx.so.10.0.0
/usr/lib/x86_64-linux-gnu/liblog4cxx.so.10
/usr/lib/x86_64-linux-gnu/liblog4cxx.so
/usr/lib/x86_64-linux-gnu/pkgconfig/liblog4cxx.pc
/usr/include/log4cxx
/usr/include/log4cxx/private/log4cxx_private.h
/usr/include/log4cxx/log4cxx.h
/usr/share/doc/liblog4cxx10
/usr/share/doc/liblog4cxx10-dev
/usr/share/lintian/overrides/liblog4cxx10
/usr/share/lintian/overrides/liblog4cxx10-dev
/var/cache/apt/archives/liblog4cxx10-dev_0.10.0-4_amd64.deb
/var/cache/apt/archives/liblog4cxx10_0.10.0-4_amd64.deb
/var/lib/dpkg/info/liblog4cxx10:amd64.postinst
/var/lib/dpkg/info/liblog4cxx10:amd64.shlibs
/var/lib/dpkg/info/liblog4cxx10-dev.list
/var/lib/dpkg/info/liblog4cxx10:amd64.list
/var/lib/dpkg/info/liblog4cxx10:amd64.md5sums
/var/lib/dpkg/info/liblog4cxx10:amd64.postrm
/var/lib/dpkg/info/liblog4cxx10-dev.md5sumsApache网站上的文档并不完全清楚还存在哪些库依赖项。有人知道我错过了什么吗？
回答 1
Stack Overflow用户
发布于 2019-08-25 06:10:53
我在Ubuntu18.04上使用log4cxx时遇到了同样的链接器错误。通过将以下附加Apache库添加到我的MakeFile中，我能够让他们的代码片段工作起来--包括上面的代码片段
LIBS+= -llog4cxx -laprutil-1 -lapr-1请确保按上述顺序列出它们。
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/38237657
复制相关文章
相似问题
腾讯云开发者
