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On Sat, 6 Jan 2007, Kevin F. Quinn wrote: |
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[...] |
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> The cases internal to gcc/glibc are exceptions, in that the archives are |
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> used to build shared libraries (which use the lib*_nonshared.a archives |
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> which should always be PIC anyway) and those executables - which if we |
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lib*_nonshared.a does not have anything to do with this |
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libc_nonshared.a is used, because: |
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1. some objects have to go into each binary: |
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- __libc_csu_init/fini |
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- atexit |
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2. because glibc changed the stat interface and to make updates possible |
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they decided to put stat/fstat/lstat/fstatat/mknod/mknodat and their *64 |
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counterparts into all binaries needing them |
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3. __stack_chk_fail_local to get rid of jump relocation on x86[_64] at |
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least (hardened/ssp) |
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haven't checked why __warn_memset_zero_len was added |
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for libpthread_nonshared.a, because: |
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1. pthread_atfork has to go into each binary |
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Note: for gcc libgcc.a is always -fPIC compiled (LIBGCC2_CFLAGS) |
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Peter |
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-- |
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Peter S. Mazinger <ps dot m at gmx dot net> ID: 0xA5F059F2 |
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Key fingerprint = 92A4 31E1 56BC 3D5A 2D08 BB6E C389 975E A5F0 59F2 |
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-- |
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