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| author | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2020-03-17 08:38:54 -0500 |
|---|---|---|
| committer | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2020-04-30 08:52:08 -0500 |
| commit | 5c7ccc29830fb59d39d67222caca5b4bd6ca2e0f (patch) | |
| tree | 9079b343178de921de8bfedabd45670c0ade54b5 /INSTALL | |
| parent | 3a0acbdcc51a6a854be6500da325b99cc68754c3 (diff) | |
| download | glibc-5c7ccc29830fb59d39d67222caca5b4bd6ca2e0f.tar.gz glibc-5c7ccc29830fb59d39d67222caca5b4bd6ca2e0f.tar.xz glibc-5c7ccc29830fb59d39d67222caca5b4bd6ca2e0f.zip | |
powerpc64le: blacklist broken GCC compilers (e.g GCC 7.5.0)
GCC 7.5.0 (PR94200) will refuse to compile if both -mabi=% and -mlong-double-128 are passed on the command line. Surprisingly, it will work happily if the latter is not. For the sake of maintaining status quo, test for and blacklist such compilers. Tested with a GCC 8.3.1 and GCC 7.5.0 compiler for ppc64le. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Diffstat (limited to 'INSTALL')
| -rw-r--r-- | INSTALL | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/INSTALL b/INSTALL index 4bf4bd0908..b7676d1c9f 100644 --- a/INSTALL +++ b/INSTALL @@ -469,9 +469,11 @@ build the GNU C Library: For PowerPC 64-bits little-endian (powerpc64le), a GCC version with support for '-mno-gnu-attribute', '-mabi=ieeelongdouble', and - '-mabi=ibmlondouble' is required. These additional features are - required for building the GNU C Library with support for IEEE long - double. + '-mabi=ibmlondouble' is required. Likewise, the compiler must also + support passing '-mlong-double-128' with the preceding options. As + of release, this implies GCC 7.4 and newer (excepting GCC 7.5.0, + see GCC PR94200). These additional features are required for + building the GNU C Library with support for IEEE long double. For multi-arch support it is recommended to use a GCC which has been built with support for GNU indirect functions. This ensures |