diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2025-03-07 08:58:47 +0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2025-03-07 09:34:34 +0800 |
| commit | 9b91484bee8f6f1bf1e2d26a8df461b553784528 (patch) | |
| tree | 964a161290261066dd75d986920d4f04837d71d5 /configure.ac | |
| parent | 4e68a5ca5da468c7e8a710a94455d5b27722f8e6 (diff) | |
| download | glibc-9b91484bee8f6f1bf1e2d26a8df461b553784528.tar.xz glibc-9b91484bee8f6f1bf1e2d26a8df461b553784528.zip | |
elf: Check if __attribute__ ((aligned (65536))) is supported
The BZ #32763 tests fail to build for MicroBlaze (which defines
MAX_OFILE_ALIGNMENT to (32768*8) in GCC, so __attribute__ ((aligned
(65536))) is unsupported). Add a configure-time check to enable BZ #32763
tests only if __attribute__ ((aligned (65536))) is supported.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 7d04b54c98..5f6f0b72bc 100644 --- a/configure.ac +++ b/configure.ac @@ -1824,6 +1824,17 @@ if test $libc_cv_builtin_trap = yes; then AC_DEFINE([HAVE_BUILTIN_TRAP]) fi +dnl Check if +AC_CACHE_CHECK([whether the compiler supports __attribute__ ((aligned (65536)))], + libc_cv_aligned_65536, [ +AC_COMPILE_IFELSE([AC_LANG_SOURCE([ +char bss[0xb5dce8] __attribute__ ((aligned (65536))); +])], + [libc_cv_aligned_65536=yes], + [libc_cv_aligned_65536=no]) +]) +LIBC_CONFIG_VAR([aligned-65536], [$libc_cv_aligned_65536]) + dnl C++ feature tests. AC_LANG_PUSH([C++]) |