Il 6/30/2013 12:00 AM, Lewis Sternberg ha scritto:
first off, I'm getting "cygcheck: Wrong architecture. Only ix86
executables supported." when running cygcheck.
That said, ...
The attached multithread.cpp ought to run as far as I can tell from
Cygwin, Boost, & the web.
(There is a posting from 2010 regarding problems with building
boost::thread on Cygwin, but I'm able to build, and anyway, the Cygwin
package already includes an up-to-date version of boost::thread.
If I try to compile the attached code thus:
$ g++ -D THREADED multithread.cpp
no libraries link instruction, so of course "undefined reference"
I get:
/tmp/ccpBRr49.o:multithread.cpp:(.text+0x259): undefined reference to
`boost::system::generic_category()'
/tmp/ccpBRr49.o:multithread.cpp:(.text+0x263): undefined reference to
`boost::system::generic_category()'
/tmp/ccpBRr49.o:multithread.cpp:(.text+0x26d): undefined reference to
`boost::system::system_category()'
/usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../i686-pc-cygwin/bin/ld:
/tmp/ccpBRr49.o: bad reloc address 0xb in
section`.text$_ZN5boost6system14error_categoryD1Ev[boost::system::error_category::~error_category()]'
collect2: ld returned 1 exit status
If I add the option to load libbost_system (as suggested by some threads
on the web):
$ g++ -D THREADED -llibboost_system multithread.cpp
on MS the linking order is important...
$ g++ -D THREADED multithread.cpp -l boost_system-mt -l boost_thread-mt
$ ./a.exe
0, 0, 0, 0
0, 3.93049e-06, 0, 0
thank you for your attention and (hopefully) help,
Lewis
Regards
Marco
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