https://bugzilla.redhat.com/show_bug.cgi?id=1481324 --- Comment #15 from Tomasz Kłoczko <kloczko.tomasz@xxxxxxxxx> --- > The explanation is I patched perl-XML-LibXSLT's Makefile.PL to use > $Config{perllibs} instead of $Config{libs}. The original upstream code is > still affected. > > You can see <http://grep.cpan.me/?q=%5C%24Config%5C%7Blibs%5C%7D> for all > CPAN distributions that uses the $Config{libs} value. Maybe they are wrong. So look on this. [tkloczko@domek XML-LibXSLT-1.95]$ rm blib/arch/auto/XML/LibXSLT/LibXSLT.so; make "/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- LibXSLT.bs blib/arch/auto/XML/LibXSLT/LibXSLT.bs 644 rm -f blib/arch/auto/XML/LibXSLT/LibXSLT.so gcc -shared -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -L/usr/local/lib -fstack-protector-strong LibXSLT.o perl-libxml-mm.o -o blib/arch/auto/XML/LibXSLT/LibXSLT.so \ -L/usr/lib64 -lxslt -lxml2 -lz -llzma -ldl -lm -lexslt -llzma -lgcrypt -ldl -lgpg-error -lpthread -lresolv -lnsl -ldl -lm -lcrypt -lutil -lc -lperl \ chmod 755 blib/arch/auto/XML/LibXSLT/LibXSLT.so Manifying 1 pod document so you have here all gcc command with all params and this is generating DSO object which according to elf header uses libraries: [tkloczko@domek XML-LibXSLT-1.95]$ objdump -x blib/arch/auto/XML/LibXSLT/LibXSLT.so | grep NEEDED NEEDED libxslt.so.1 NEEDED libxml2.so.2 NEEDED libz.so.1 NEEDED liblzma.so.5 NEEDED libdl.so.2 NEEDED libm.so.6 NEEDED libexslt.so.0 NEEDED libgcrypt.so.20 NEEDED libgpg-error.so.0 NEEDED libpthread.so.0 NEEDED libresolv.so.2 NEEDED libnsl.so.1 NEEDED libcrypt.so.1 NEEDED libutil.so.1 NEEDED libc.so.6 NEEDED libperl.so.5.26 Now I'll try exactly the same gcc command but with -Wl,--as-needed to allow pass gcc to linker --as-needed whic removed from ELF header all SONAME libraries which in reality are not used by this binary: [tkloczko@domek XML-LibXSLT-1.95]$ gcc -shared -Wl,--as-needed -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -L/usr/local/lib -fstack-protector-strong LibXSLT.o perl-libxml-mm.o -o blib/arch/auto/XML/LibXSLT/LibXSLT.so -L/usr/lib64 -lxslt -lxml2 -lz -llzma -ldl -lm -lexslt -llzma -lgcrypt -ldl -lgpg-error -lpthread -lresolv -lnsl -ldl -lm -lcrypt -lutil -lc -lperl; objdump -x blib/arch/auto/XML/LibXSLT/LibXSLT.so | grep NEEDED NEEDED libxslt.so.1 NEEDED libxml2.so.2 NEEDED libexslt.so.0 NEEDED libpthread.so.0 NEEDED libc.so.6 NEEDED libperl.so.5.26 Do you see the difference? Do you see that except libc which is added by standard gcc spec NONE of the perllib libraries are used by this module? -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ perl-devel mailing list -- perl-devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to perl-devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
