Message-ID: <14705301.post@talk.nabble.com>
Date: Tue, 8 Jan 2008 20:57:07 -0800 (PST)
From: adam99 <adamquestion AT gmail DOT com>
To: cygwin AT cygwin DOT com
Subject: cygwin, g++ and boost? Do I need dll.a?
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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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