Aqui está o comando link. Observe o linker dinâmico especialmente definido perto do começo.
time gcc -Wl,-rpath,/data/data/org.freesoft.Macaulay2/files/lib -Wl,-rpath,/data/data/org.freesoft.Macaulay2/files/lib/Macaulay2/armv7l-Linux-Ubuntu-12.04/lib -L/root/M2/M2/libraries/final/lib -Wl,--dynamic-linker=/data/data/org.freesoft.Macaulay2/files/lib/ld-linux.so.3 -L/usr/lib/gcc/arm-linux-gnueabi/4.6 -L/usr/lib/gcc/arm-linux-gnueabi/4.6/../../../arm-linux-gnueabi -L/usr/lib/gcc/arm-linux-gnueabi/4.6/../../../../lib -L/lib/arm-linux-gnueabi -L/lib/../lib -L/usr/lib/arm-linux-gnueabi -L/usr/lib/../lib -L/usr/lib/gcc/arm-linux-gnueabi/4.6/../../.. timestamp.o ../d/M2inits.o ../d/startup.o ../d/../regex/regex.o ../d/gmp_init.o ../d/gmp_aux.o ../d/main.o ../d/pari-c.o ../d/M2-factory.o ../d/M2types.o ../d/scclib.o ../d/M2lib.o ../d/M2mem.o ../d/gdbm_interface.o ../d/xml-c.o ../d/arithmetic.o ../d/atomic.o ../d/M2.o ../d/system.o ../d/strings.o ../d/varstrin.o ../d/strings1.o ../d/errio.o ../d/vararray.o ../d/ctype.o ../d/nets.o ../d/varnets.o ../d/interrupts.o ../d/pthread0.o ../d/stdiop0.o ../d/gmp.o ../d/engine.o ../d/xml.o ../d/stdio0.o ../d/parse.o ../d/expr.o ../d/stdio.o ../d/stdiop.o ../d/err.o ../d/gmp1.o ../d/tokens.o ../d/getline.o ../d/lex.o ../d/parser.o ../d/binding.o ../d/basic.o ../d/convertr.o ../d/common.o ../d/util.o ../d/struct.o ../d/classes.o ../d/buckets.o ../d/equality.o ../d/hashtables.o ../d/sets.o ../d/version.o ../d/evaluate.o ../d/mysqldummy.o ../d/pthread.o ../d/actors.o ../d/actors2.o ../d/actors3.o ../d/actors4.o ../d/xmlactors.o ../d/actors5.o ../d/threads.o ../d/pari.o ../d/interface.o ../d/interface2.o ../d/texmacs.o ../d/interp.o ../e/error.o ../e/table.o ../e/exptable.o ../e/monordering.o ../e/complex.o ../e/rand.o ../e/matrix-stream.o ../e/cra.o ../e/aring-zz-flint.o ../e/aring-RRR.o ../e/aring-tower.o ../e/aring-m2-gf.o ../e/aring-promoter.o ../e/aring-glue.o ../e/aring-zzp.o ../e/aring-gf.o ../e/aring-ffpack.o ../e/aring.o ../e/schurSn.o ../e/schur2.o ../e/spair-heap.o ../e/dpoly.o ../e/tower.o ../e/interreduce.o ../e/gb-test1.o ../e/finalize.o ../e/NAG.o ../e/overflow.o ../e/memory-status.o ../e/exceptions.o ../e/imonorder.o ../e/sagbi.o ../e/monideal-minprimes.o ../e/dmat-LU.o ../e/lapack.o ../e/LLL.o ../e/fractionfreeLU.o ../e/ntl-interface.o ../e/fplll-interface.o ../e/mat.o ../e/dmat.o ../e/smat.o ../e/coeffrings.o ../e/Eschreyer.o ../e/gbweight.o ../e/qring.o ../e/polyquotient.o ../e/poly.o ../e/debug.o ../e/comp.o ../e/comp-gb.o ../e/comp-gb-proxy.o ../e/comp-gb-declared.o ../e/comp-res.o ../e/res-a0.o ../e/res-a0-poly.o ../e/res-a1.o ../e/res-a1-poly.o ../e/res-a2.o ../e/reducedgb.o ../e/reducedgb-field.o ../e/reducedgb-marked.o ../e/reducedgb-field-local.o ../e/reducedgb-ZZ.o ../e/montable.o ../e/montableZZ.o ../e/schorder.o ../e/GF.o ../e/ZZ.o ../e/QQ.o ../e/RRR.o ../e/CCC.o ../e/assprime.o ../e/buffer.o ../e/comb.o ../e/det.o ../e/frac.o ../e/franzi-brp.o ../e/freemod.o ../e/gb-default.o ../e/gb-homog2.o ../e/gb-sugarless.o ../e/gb-toric.o ../e/gb-walk.o ../e/gbring.o ../e/gauss.o ../e/hermite.o ../e/hilb.o ../e/int-bag.o ../e/intarray.o ../e/matrix.o ../e/matrix-con.o ../e/mem.o ../e/monideal.o ../e/monoid.o ../e/monomial.o ../e/ntuple.o ../e/polyring.o ../e/pfaff.o ../e/relem.o ../e/ring.o ../e/ringmap.o ../e/schur.o ../e/skew.o ../e/skewpoly.o ../e/solvable.o ../e/spair.o ../e/text-io.o ../e/varpower.o ../e/weylalg.o ../e/ZZp.o ../e/interrupted.o ../e/newdelete.o ../e/ntl-internal.o ../e/ntl-debugio.o ../e/matrix-kbasis.o ../e/matrix-symm.o ../e/matrix-sort.o ../e/ring-vecs.o ../e/res-a2-gb.o ../e/engine.o ../e/x-aring.o ../e/x-monom.o ../e/x-monoid.o ../e/x-relem.o ../e/x-free.o ../e/x-mat.o ../e/x-gb.o ../e/x-ringmap.o ../e/x-mutablemat.o ../e/franzi-gb.o ../e/franzi-interface.o ../e/x-monideal.o ../e/x-factor.o ../e/f4/f4.o ../e/f4/f4-syz.o ../e/f4/f4-mem.o ../e/f4/f4-monlookup.o ../e/f4/f4-types.o ../e/f4/f4-computation.o ../e/f4/f4-spairs.o ../e/f4/f4-m2-interface.o ../e/f4/hilb-fcn.o ../e/f4/monhashtable.o ../e/f4/monsort.o ../e/f4/moninfo.o ../e/f4/ntuple-monomial.o ../e/f4/varpower-monomial.o ../e/f4/gausser.o ../system/m2file.o ../system/supervisor.o ../system/tests.o ../kernel/bibasis/bibasis.o ../kernel/bibasis/allocator.o ../kernel/bibasis/launcher.o ../kernel/bibasis/monom.o ../kernel/bibasis/monomDL.o ../kernel/bibasis/monomDRL.o ../kernel/bibasis/monomLex.o ../kernel/bibasis/settings-manager.o -L../d -lM2inits2 -lfac -lcf -lfac -lcfmem -lgc -lpthread -lmpfr -lfrobby -lpari -lmpirxx -lmpir -Wl,-Bstatic -Wl,-Bdynamic -lxml2 -lz -lm -llapack -lblas -lntl -lgdbm -lgc -lreadline -lpthread -ldl -lrt -lstdc++ -lncurses -Wl,-Bstatic -lgfortran -Wl,-Bdynamic -ldl -lrt -lm -lxml2 -lm -lc -o "/root/M2/M2/StagingArea/armv7l-Linux-Ubuntu-12.04/bin/M2".tmp
Veja o que o ldd tem a dizer sobre o executável resultante:
ldd /root/M2/M2/StagingArea/armv7l-Linux-Ubuntu-12.04/bin/M2.tmp
libpthread.so.0 => /data/data/org.freesoft.Macaulay2/files/lib/libpthread.so.0 (0x401b2000)
libxml2.so.2 => /data/data/org.freesoft.Macaulay2/files/lib/libxml2.so.2 (0x401cd000)
libm.so.6 => /data/data/org.freesoft.Macaulay2/files/lib/libm.so.6 (0x40023000)
liblapack.so.3gf => /data/data/org.freesoft.Macaulay2/files/lib/liblapack.so.3gf (0x4029b000)
libntl-5.4.2.so => /data/data/org.freesoft.Macaulay2/files/lib/libntl-5.4.2.so (0x40925000)
libgdbm.so.3 => /data/data/org.freesoft.Macaulay2/files/lib/libgdbm.so.3 (0x4009c000)
libreadline.so.6 => /data/data/org.freesoft.Macaulay2/files/lib/libreadline.so.6 (0x400f0000)
libdl.so.2 => /data/data/org.freesoft.Macaulay2/files/lib/libdl.so.2 (0x4008f000)
librt.so.1 => /data/data/org.freesoft.Macaulay2/files/lib/librt.so.1 (0x400ca000)
libstdc++.so.6 => /data/data/org.freesoft.Macaulay2/files/lib/libstdc++.so.6 (0x40a3f000)
libc.so.6 => /data/data/org.freesoft.Macaulay2/files/lib/libc.so.6 (0x40ae6000)
/data/data/org.freesoft.Macaulay2/files/lib/ld-linux.so.3 => /lib/ld-linux.so.3 (0x400aa000)
libgcc_s.so.1 => /data/data/org.freesoft.Macaulay2/files/lib/libgcc_s.so.1 (0x400d8000)
libz.so.1 => /data/data/org.freesoft.Macaulay2/files/lib/libz.so.1 (0x40120000)
libblas.so.3gf => /data/data/org.freesoft.Macaulay2/files/lib/libblas.so.3gf (0x40138000)
libgfortran.so.3 => /data/data/org.freesoft.Macaulay2/files/lib/libgfortran.so.3 (0x40bc8000)
libgmp.so.10 => /data/data/org.freesoft.Macaulay2/files/lib/libgmp.so.10 (0x40c43000)
libtinfo.so.5 => /data/data/org.freesoft.Macaulay2/files/lib/libtinfo.so.5 (0x40c8d000)
Por que tudo aponta para /data/data/... EXCETO o próprio carregador dinâmico?
Se você quiser reproduzir tudo, é um Macaulay 2 criado no ARM com este comando configure :
./configure --enable-download --enable-build-libraries=pari --prefix=/data/data/org.freesoft.Macaulay2/files LDFLAGS=-Wl,--dynamic-linker=/data/data/org.freesoft.Macaulay2/files/lib/ld-linux.so.3
Isso porque ldd é realmente um script que chama /lib/ld-linux.so.3 com o executável como argumento e LD_TRACE_LOADED_OBJECTS=1 em seu ambiente, portanto
/lib/ld-linux.so.3 relata a si mesmo como o vinculador dinâmico.
Em vez disso, você pode executar
LD_TRACE_LOADED_OBJECTS=1 /root/M2/M2/StagingArea/armv7l-Linux-Ubuntu-12.04/bin/M2.tmp
diretamente, caso em que será o vinculador dinâmico que você especificou que despejará as bibliotecas e ele mesmo.
Os argumentos:
-Wl,-rpath,/data/data/org.freesoft.Macaulay2/files/lib
-Wl,-rpath,/data/data/org.freesoft.Macaulay2/files/lib/Macaulay2/armv7l-Linux-Ubuntu-12.04/lib
estão sendo transmitidos para o vinculador de gcc . Estes são o que está conduzindo o /data/data em sua compilação binária final.
Estas opções:
-Wl,--dynamic-linker=/data/data/org.freesoft.Macaulay2/files/lib/ld-linux.so.3
estão controlando onde encontrar o carregador dinâmico. Verifique novamente este caminho:
/data/data/org.freesoft.Macaulay2/files/lib/ld-linux.so.3
é um arquivo real e não um link para /lib/ld-linux.so.3 . Pelo menos de acordo com o ldd output:
/data/data/org.freesoft.Macaulay2/files/lib/ld-linux.so.3 => /lib/ld-linux.so.3 (0x400aa000)
parece ser um link.
Tags dynamic-linking