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List:       boost-build
Subject:    [Boost-build] How to build static python-extension?
From:       Amos Anderson <amos.anderson () protabit ! com>
Date:       2014-10-01 1:05:18
Message-ID: 5655E4E9-32D9-47B2-BBE0-3A9B21D3D34D () protabit ! com
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Hi Boost Build --

I'm trying to figure out how to build a static python extension using boost 1.55. I \
have a setup which can compile shared libraries successfully, so now I'm trying to \
figure out how to modify my Jamroot/Jamfile to do static instead.

It's a large project, but here are the changes I've made. I added <link>static to my \
variant which is defined in my Jamroot:

variant release-myapp :
   <optimization>speed
   <debug-symbols>on
   <inlining>full
   <runtime-debugging>off
   <parallelism>mpi
   <link>static
;

and in the Jamfile with the python extensions, I have this:

python-extension myappCPP : 
    file1.cc
    file2.cc
    ...
    /otherproject1//project1
    /otherproject2//project2
    :
    <link>static
    ;

and for good measure, when I call bjam I add "-d 2 variant=release-myapp link=static" \
to the command line. It *looks* like everything is compiling as expected (i.e. the \
other projects are all resulting in .a files as expected). For example, when file1.cc \
gets compiled, I see:

gcc.compile.c++ pymodule/bin/gcc-4.1.2/release-myapp/threading-multi/file1.o

    "g++"  -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -g -pthread \
-ftemplate-depth-256 -Dmyapp_MPI -Dkiss_fft_scalar=double -Wno-unknown-pragmas \
-Wstrict-aliasing=2 -fno-strict-aliasing -DBOOST_PYTHON_MAX_ARITY=30 \
-DBOOST_PYTHON_STATIC_LIB -DBOOST_SYSTEM_STATIC_LINK=1  -I"../tools/boost" \
-I"../tools/python/include/python2.7" -I"/home/user/myapp3/tools/openmpi/include" -c \
-o "pymodule/bin/gcc-4.1.2/release-myapp/threading-multi/file1.o" "pymodule/file1.cc"


which appears to be correct. Other non-python projects appear to be producing static \
libraries as expected. However, when it tries to build the python extension library, \
it looks like it's trying to build a shared library:


gcc.link.dll pymodule/bin/gcc-4.1.2/release-myapp/threading-multi/myappCPP.so

    "g++" -L"/home/user/myapp3/tools/apbs/lib" -L"/home/user/myapp3/tools/hdf5/lib" \
-L"/home/user/myapp3/tools/kdl/lib" -L"/home/user/myapp3/tools/openmpi/lib"   -o \
"pymodule/bin/gcc-4.1.2/release-myapp/threading-multi/myappCPP.so" -Wl,-h \
-Wl,myappCPP.so -shared -Wl,--start-group \
"pymodule/bin/gcc-4.1.2/release-myapp/threading-multi/file1.o" <snip>   -Wl,-Bstatic \
-lorocos-kdl -lapbs_pmgc -lapbs_mg -lapbs_generic -lmaloc -lhdf5_cpp -lhdf5 -lutil \
-lpthread -ldl -Wl,-Bdynamic -ldl -lm -lmpi -lmpi_cxx -lnsl -lrt -lutil -lutil \
-lpthread -ldl -lrt -Wl,--end-group -g -pthread -Wl,--export-dynamic

/usr/bin/ld: pymodule/bin/gcc-4.1.2/release-myapp/threading-multi/file1.o: relocation \
R_X86_64_32 against `a local symbol' can not be used when making a shared object; \
                recompile with -fPIC
pymodule/bin/gcc-4.1.2/release-myapp/threading-multi/file1.o: could not read symbols: \
                Bad value
collect2: ld returned 1 exit status

where that last g++ line has quite a bit of text that has been snipped out (i.e. all \
the other object files). I can't find any other places where a "static" tag would be \
effective. Is there something I'm doing wrong?

Thanks!
Amos.






p.s. if it matters, I tried runtime-link=static too, but when that compiled it also \
tried to build a file called myappCPP.so, also used the -shared flag, but which \
failed with a different link error:

    "g++" -L"/home/user/myapp3/tools/apbs/lib" -L"/home/user/myapp3/tools/hdf5/lib" \
-L"/home/user/myapp3/tools/kdl/lib" -L"/home/user/myapp3/tools/openmpi/lib"   -o \
"pymodule/bin/gcc-4.1.2/release-myapp/runtime-link-static/threading-multi/myappCPP.so" \
-Wl,-h -Wl,myappCPP.so -shared -Wl,--start-group \
"pymodule/bin/gcc-4.1.2/release-myapp/runtime-link-static/threading-multi/OneD_BP.o" \
<snip>   -lorocos-kdl -lapbs_pmgc -lapbs_mg -lapbs_generic -lmaloc -lhdf5_cpp -lhdf5 \
-lutil -lpthread -ldl  -ldl -lm -lmpi -lmpi_cxx -lnsl -lrt -lutil -lutil -lpthread \
-ldl -lrt -Wl,--end-group -g -static -pthread -Wl,--export-dynamic


/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtbeginT.o: relocation \
R_X86_64_32 against `__DTOR_END__' can not be used when making a shared object; \
                recompile with -fPIC
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/crtbeginT.o: could not read symbols: Bad value



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