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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2020-05-06 20:22:16 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2020-07-08 15:02:37 +0100 |
| commit | 1b0a4f58f5b10cf6d5ad10ee8d81772c5bd29248 (patch) | |
| tree | 1b4e0dcc25815f45d90cc1c2b9def4d42ab9aecc /config.h.in | |
| parent | dbfefbdc3aeec88868cb9d46267f91dc62461226 (diff) | |
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aarch64: configure test for BTI support
Check BTI support in the compiler and linker. The check also
requires READELF that understands the BTI GNU property note.
It is expected to succeed with gcc >=gcc-9 configured with
--enable-standard-branch-protection and binutils >=binutils-2.33.
Note: passing -mbranch-protection=bti in CFLAGS when building glibc
may not be enough to get a glibc that supports BTI because crtbegin*
and crtend* provided by the compiler needs to be BTI compatible too.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'config.h.in')
| -rw-r--r-- | config.h.in | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/config.h.in b/config.h.in index 831eca2fe1..67169e5d01 100644 --- a/config.h.in +++ b/config.h.in @@ -109,6 +109,9 @@ /* AArch64 big endian ABI */ #undef HAVE_AARCH64_BE +/* AArch64 BTI support enabled. */ +#define HAVE_AARCH64_BTI 0 + /* C-SKY ABI version. */ #undef CSKYABI |