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cygwin, g++ and boost? Do I need dll.a?
- From: adam99 <adamquestion at gmail dot com>
- To: cygwin at cygwin dot com
- Date: Tue, 8 Jan 2008 20:57:07 -0800 (PST)
- Subject: cygwin, g++ and boost? Do I need dll.a?
I downloaded boost packages under cygwin (both boost and boost-devel). My
first problem is unit test framework was not installed through this
installation. I have tried to create it through bjam and created a library
file at
/usr/src/boost-1.33.1-3/boost_1_33_1/bin/boost/libs/test/build/libboost_unit_tes
t_framework.a/gcc/boost_unit_test_framework/libboost_unit_test_framework-gcc-1_3
3_1.a
I copied it from there to my /lib directory. Then while trying to build
quantlib I figured out that quantlib was not able to find any of the boost
libraries. They are in my /lib directory as below.
After several trials with an hello world code an trying to link library, I
realized that I can not link anything in /lib without dll.a extension
g++ -o hello -L/lib hello.cpp -llibcrypt
this works, since
ls /lib/libcrypt*
/lib/libcrypt.a /lib/libcrypt.dll.a
g++ -o hello -L/lib hello.cpp -llibbfd
/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld: cannot
find -llibbfd
collect2: ld returned 1 exit status
fails as libbfd.dll.a does not exist;
ls /lib/libbfd*
/lib/libbfd.a /lib/libbfd.la
none of the libboost have dll.a file;
ls libboost*
libboost_date_time-gcc-mt-1_33_1.a
libboost_program_options-gcc-mt-s.a libboost_signals-gcc-mt-s.a
libboost_date_time-gcc-mt-s-1_33_1.a
libboost_program_options-gcc-mt.a libboost_signals-gcc-mt.a
libboost_date_time-gcc-mt-s.a libboost_python-gcc-mt-1_33_1.a
libboost_thread-gcc-mt-1_33_1.a
libboost_date_time-gcc-mt.a libboost_python-gcc-mt.a
libboost_thread-gcc-mt-s-1_33_1.a
libboost_filesystem-gcc-mt-1_33_1.a libboost_regex-gcc-mt-1_33_1.a
libboost_thread-gcc-mt-s.a
libboost_filesystem-gcc-mt-s-1_33_1.a libboost_regex-gcc-mt-s-1_33_1.a
libboost_thread-gcc-mt.a
libboost_filesystem-gcc-mt-s.a libboost_regex-gcc-mt-s.a
libboost_unit_test_framework-gcc-1_33_1.a
libboost_filesystem-gcc-mt.a libboost_regex-gcc-mt.a
libboost_unit_test_framework-gcc-mt.a
libboost_iostreams-gcc-mt-1_33_1.a
libboost_serialization-gcc-mt-1_33_1.a libboost_wave-gcc-mt-1_33_1.a
libboost_iostreams-gcc-mt-s-1_33_1.a
libboost_serialization-gcc-mt-s-1_33_1.a libboost_wave-gcc-mt-s-1_33_1.a
libboost_iostreams-gcc-mt-s.a
libboost_serialization-gcc-mt-s.a libboost_wave-gcc-mt-s.a
libboost_iostreams-gcc-mt.a libboost_serialization-gcc-mt.a
libboost_wave-gcc-mt.a
libboost_program_options-gcc-mt-1_33_1.a libboost_signals-gcc-mt-1_33_1.a
libboost_program_options-gcc-mt-s-1_33_1.a
libboost_signals-gcc-mt-s-1_33_1.a
Could you tell me why I need dll.a files? Also how can I generate them for
the boost installation under cygwin
Thanks
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