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| author | Stefan Liebler <stli@linux.ibm.com> | 2020-12-15 15:18:03 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2020-12-17 16:18:04 +0100 |
| commit | 844b4d8b4b937fe6943d2c0c80ce7d871cdb1eb5 (patch) | |
| tree | e1b9009fe7c5b66a726fb47369b9da4d054521a9 /manual | |
| parent | 29a4db291b1282f4088e549391d86b6b470f22be (diff) | |
| download | glibc-844b4d8b4b937fe6943d2c0c80ce7d871cdb1eb5.zip glibc-844b4d8b4b937fe6943d2c0c80ce7d871cdb1eb5.tar.gz glibc-844b4d8b4b937fe6943d2c0c80ce7d871cdb1eb5.tar.bz2 | |
s390x: Require GCC 7.1 or later to build glibc.
GCC 6.5 fails to correctly build ldconfig with recent ld.so.cache
commits, e.g.:
785969a047ad2f23f758901c6816422573544453
elf: Implement a string table for ldconfig, with tail merging
If glibc is build with gcc 6.5.0:
__builtin_add_overflow is used in
<glibc>/elf/stringtable.c:stringtable_finalize()
which leads to ldconfig failing with "String table is too large".
This is also recognizable in following tests:
FAIL: elf/tst-glibc-hwcaps-cache
FAIL: elf/tst-glibc-hwcaps-prepend-cache
FAIL: elf/tst-ldconfig-X
FAIL: elf/tst-ldconfig-bad-aux-cache
FAIL: elf/tst-ldconfig-ld_so_conf-update
FAIL: elf/tst-stringtable
See gcc "Bug 98269 - gcc 6.5.0 __builtin_add_overflow() with small
uint32_t values incorrectly detects overflow"
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98269)
Diffstat (limited to 'manual')
| -rw-r--r-- | manual/install.texi | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/manual/install.texi b/manual/install.texi index 2e16447..648f366 100644 --- a/manual/install.texi +++ b/manual/install.texi @@ -509,6 +509,8 @@ Library with support for IEEE long double. For ARC architecture builds, GCC 8.3 or higher is needed. +For s390x architecture builds, GCC 7.1 or higher is needed (See gcc Bug 98269). + For multi-arch support it is recommended to use a GCC which has been built with support for GNU indirect functions. This ensures that correct debugging information is generated for functions selected by IFUNC resolvers. This |