Re: [Log4cplus-devel] Failed to compile with flag "-std=c++11" in projects

[Václav Z. <vha...@gm...>]

What was the configure script  command line? You have to compile
log4cplus with C++11 support enabled. Add CXXFLAGS="-std=c++11" to its
command line.

On 06/10/2013, Delian Xu <del...@gm...> wrote:
> Hello,
>
> How to make log4cplus work with compile-flag "-std=c++11" ?
>
> It seems that log4cplus can work with c++11, but I failed to try it, please
> help to have a look, thanks!
>
>
> $ g++ -Wall* -std=c++11* main_trader.cpp liblog4cplus.a -lpthread
>
> /tmp/ccrHnjIt.o: In function
> `log4cplus::detail::macros_get_logger(log4cplus::Logger&&)':
> main_trader.cpp:(.text._ZN9log4cplus6detail17macros_get_loggerEONS_6LoggerE[_ZN9log4cplus6detail17macros_get_loggerEONS_6LoggerE]+0x2a):
> *undefined reference to `log4cplus::Logger::Logger(log4cplus::Logger&&)*'
> collect2: error: ld returned 1 exit status
>
>
> I use macros like "LOG4CPLUS_ERROR(Logger::getRoot(), p)" in my code.
>
> I'm using Ubuntu13.04, x64.  with g++ 4.7
> $   g++ --version
> g++ (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3
>
>
>
> ----------------------------------------------------------------------------------------------------------------------
> I compiled log4cplus myself, with 'default' option or flags.
>
> (In log4cplus-1.1.2-rc3:)  $ cat ./config.log |grep "c++11"
>
> configure:5755: checking CXXFLAGS for gcc -Wc++11-compat
> configure:5782: g++ -c -g -O2 -Wall -Wextra -pedantic -Wstrict-aliasing
> -Wstrict-overflow -Woverloaded-virtual -Wold-style-cast -Wc++0x-compat
> -pedantic -Werror  -Wc++11-compat  -D_GNU_SOURCE=1 conftest.cpp >&5
> configure:5796: result: -Wc++11-compat
>


-- 
VZ