On Mon, Jan 21, 2013 at 1:01 AM, horseriver <horseriv...@gmail.com> wrote:
> On Sun, Jan 20, 2013 at 09:07:15AM -0800, Ian Lance Taylor wrote: > > On Sat, Jan 19, 2013 at 1:30 PM, horseriver <horseriv...@gmail.com> > wrote: > > > On Sat, Jan 19, 2013 at 09:47:53PM -0800, Ian Lance Taylor wrote: > > >> On Fri, Jan 18, 2013 at 10:19 PM, horseriver <horseriv...@gmail.com> > wrote: > > >> > hi: > > >> > > > >> > Here are two command for producting one .so file : > > >> > > > >> > 1. gcc -nostdlib -Wl,-T,vsyscall.lds vsyscall-int80.o -o > vsyscall-int80.so > > >> > > > >> > 2. ld -T vsyscall.lds vsyscall-int80.o -o vsyscall-int80.so > > >> > > >> There is no substantive difference between these commands. There are > > >> various minor differences that probably don't matter. Use the -v > > >> option when invoking gcc to see precisely how it invokes the linker. > > >> > > >> In particular, invoking the linker via the gcc driver will cause some > > >> C++-specific operations to occur when needed, but since you aren't > > >> using C++ in this case they won't happen. > > > > > > Thanks! > > > > > > I have a weird problem here! > > > > > > When I type the 1 to make vsyscall-int80.so ,ld report error: Not > enough room for program headers, try linking with -N > > > > > > But,When I type 2 to make vsyscall-int80.so,it works successfully. > > > > > > What is the reason? > > > > I don't know. Run the complete gcc command with the -v option and you > > will see precisely how it invokes the linker. > > gcc -v > Using built-in specs. > Target: i486-linux-gnu > Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.5-8' > --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs > --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr > --program-suffix=-4.4 --enable-shared --enable-multiarch > --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib > --without-included-gettext --enable-threads=posix > --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls > --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc > --enable-targets=all --with-arch-32=i586 --with-tune=generic > --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu > --target=i486-linux-gnu > Thread model: posix > > which option make the two commands different? > I think that question is more suitable for gcc or ld mailing lists. > > Thanks! > > > > > Ian > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- Thank you Warm Regards Anuz
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