No Solaris 10, criei o gcc 4.9.0 para 64 bits. Pelo menos eu pensei que fiz. Estou construindo uma pilha baseada no Apache e outras ferramentas de pré-requisito.
Se eu criar o apache file mostra um httpd de 64 bits:
file apache-test/bin/httpd
apache-test/bin/httpd: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
Portanto, isso sugere que meu GCC é de 64 bits, mas no diretório onde eu construo meus binários eu corro for f in *; do file $f; done para executar o arquivo em todo o diretório que obtenho:
for f in *; do file $f; done
a.out: empty file
addr2line: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
ar: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
as: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
c_rehash: executable /usr/bin/perl script
c++: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
c++filt: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
compile_et: executable shell script
cpp: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
elfedit: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3], dynamically linked, not stripped
g++: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
gcc: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
gcc-ar: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3], dynamically linked, not stripped
gcc-nm: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3], dynamically linked, not stripped
gcc-ranlib: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3], dynamically linked, not stripped
gcov: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS POPC], dynamically linked, not stripped
gprof: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
gss-client: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
k5srvutil: executable shell script
kadmin: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
kdestroy: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
kinit: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
klist: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
kpasswd: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
krb5-config: executable shell script
kswitch: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
ktutil: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
kvno: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
ld: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
ld.bfd: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
nm: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
objcopy: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
objdump: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
openssl: ELF 64-bit MSB executable SPARCV9 Version 1, UltraSPARC1 Extensions Required, dynamically linked, not stripped, no debugging information available
pcre-config: executable shell script
pcregrep: ELF 64-bit MSB executable SPARCV9 Version 1, UltraSPARC3 Extensions Required, dynamically linked, not stripped
pcretest: ELF 64-bit MSB executable SPARCV9 Version 1, UltraSPARC3 Extensions Required, dynamically linked, not stripped
ranlib: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
readelf: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
sclient: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
sim_client: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
size: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
sparc-sun-solaris2.10-c++: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
sparc-sun-solaris2.10-g++: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
sparc-sun-solaris2.10-gcc: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
sparc-sun-solaris2.10-gcc-4.9.0: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 FMAF VIS], dynamically linked, not stripped
sparc-sun-solaris2.10-gcc-ar: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3], dynamically linked, not stripped
sparc-sun-solaris2.10-gcc-nm: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3], dynamically linked, not stripped
sparc-sun-solaris2.10-gcc-ranlib: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3], dynamically linked, not stripped
strings: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
strip: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+ Required, UltraSPARC3 Extensions Required [CBCOND VIS3 VIS], dynamically linked, not stripped
uuclient: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically linked, not stripped, no debugging information available
Por que estou vendo tantas construções de 32 bits? Se eu usei o gcc para construir o apache, como ele pode ser 64 bits quando os arquivos do gcc estão mostrando 32 bits?
O GCC no Solaris tem alguns padrões diferentes, por exemplo, do que o GCC no Linux.
Para compilar 64 binários, você precisa adicionar
-m64
para suas linhas de compilação e link.
Isso torna o GCC compatível com o compilador Solaris Studio C, a esse respeito.
No SPARC, a compilação de programas como 32 bits não tem tantas desvantagens quanto em, e. x86, onde 64 bits também fornecem registros adicionais.
Você deve pensar em um compilador como uma função que gera saída de alguma entrada, ou
output_program = compile_function(input_source, args)
A existência de compile_function como um binário de 32 ou 64 bits afeta como faz seu trabalho, mas não a saída.
Se simplificarmos grosseiramente o papel de 64 bits para simplesmente aumentar a quantidade de memória endereçável, então tecnicamente um compilador de 32 bits só deve ser problemático para situações onde mais de 4GB de memória endereçável é necessária para produzir a saída. Tal situação para os tempos atuais, é principalmente inconcebível (embora eu tenha certeza de que algumas pessoas possam chegar a um exemplo artificial que faça exatamente isso).