[CMake] unexpected INSTALL problems

[Michael Hertling]

On 06/15/2011 11:43 PM, Dominik Szczerba wrote:
>> This behavior is really strange and I tested it in the last 10 minutes.
>> CMake says:
>> boost libs: /usr/lib/libboost_system-mt.so
>>
>> Compiling and linking with verbose reveals the link command:
>> /usr/bin/c++      CMakeFiles/test.dir/test.cpp.o  -o test -rdynamic
>> -lboost_system-mt
>>
>> But a ldd on test gives:
>> andreas[515:3]:ldd test
>>        linux-vdso.so.1 =>  (0x00007fff2fb4a000)
>>        libboost_system.so.1.46.1 => /usr/lib/libboost_system.so.1.46.1
>> (0x00007f525e8c7000)
>>        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007f525e5bd000)
>>        libm.so.6 => /lib/libm.so.6 (0x00007f525e33a000)
>>        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007f525e124000)
>>        libc.so.6 => /lib/libc.so.6 (0x00007f525ddc3000)
>>        librt.so.1 => /lib/librt.so.1 (0x00007f525dbba000)
>>        libpthread.so.0 => /lib/libpthread.so.0 (0x00007f525d99e000)
>>        /lib64/ld-linux-x86-64.so.2 (0x00007f525eaf5000)
>>
>> I don't install, only build the executable.
> 
> Installation does not change this picture for me.

This phenomenon is not strange but a very important mechanism on ELF
platforms, refer to [1,2,3], keyword "soname", for more information.

Regards,

Michael

> [1] http://sourceware.org/binutils/docs/ld/Options.html#index-g_t_002dsoname_003d_0040var_007bname_007d-52
> [2] http://www.tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html#AEN46
> [3] http://www.mail-archive.com/cmake@cmake.org/msg33509.html