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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-10-12 13:06:22 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2016-10-12 13:21:08 -0300 |
| commit | 716458049510215451d25ac131858b6bdf30f99f (patch) | |
| tree | 2e4c0c164d4d9e6f52196a22c3c0bbce6676acbf | |
| parent | 6a824767d8948faf10d8d3a602eb4f2a59431601 (diff) | |
| download | glibc-716458049510215451d25ac131858b6bdf30f99f.tar.gz | |
Fix posix_fadvise64 build on mips64n64
Recent binutils versions (at least 2.27) complains about libc.so
when linking sotruss-lib.so with:
libc.so:(*IND*+0x0): multiple definition of `posix_fadvise64@GLIBC_2.2'
libc.so::(.text+0xcf940): first defined here
libc.so:(*IND*+0x0): multiple definition of `posix_fadvise64'
collect2: error: ld returned 1 exit status
Dynamic symbols for libc.so shows (readelf --dyn-syms):
262: 000000000010b950 28 FUNC GLOBAL DEFAULT 12 posix_fadvise64@GLIBC_2.2
417: 000000000010b950 28 FUNC WEAK DEFAULT 12 posix_fadvise64@@GLIBC_2.2
1505: 000000000010b950 28 FUNC GLOBAL DEFAULT 12 posix_fadvise64@@GLIBC_2.3.3
That is, two separate definitions at version GLIBC_2.2. The issue is
sysdeps/unix/sysv/linux/posix_fadvise64.c creates posix_fadvise64 weak_alias,
while sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c then adds
compat_symbol / versioned_symbol calls.
The patch remove the weak_alias definition on mips64 specific version so
direct weak_alias is disabled.
Checked on mips64n64 build with binutils 2.27.51.20161012.
* sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c:
Undefine weak_alias.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c | 5 |
2 files changed, 11 insertions, 0 deletions
@@ -1,3 +1,9 @@ +2016-10-12 Adhemerval Zanela <adhemerval.zanella@linaro.org> + + * sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c: + Undefine weak_alias and add a comment why mips64 require + versioning. + 2016-10-12 H.J. Lu <hongjiu.lu@intel.com> [BZ #20647] diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c index d7aab2545f..bc756e9b84 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/posix_fadvise64.c @@ -15,11 +15,16 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +#undef weak_alias +#define weak_alias(a, b) #undef strong_alias #define strong_alias(a, b) #include <sysdeps/unix/sysv/linux/posix_fadvise64.c> +/* Although both posix_fadvise and posix_fadvise64 has the same semantic + on mips64, there were were releases with both symbol versions (BZ#14044). + So we need to continue export them. */ #if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3) _strong_alias (__posix_fadvise64_l64, __posix_fadvise64_l32); compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2); |