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gh-99108: Inform HACL when explicit_bzero is unavailable (GH-123027)

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Inform HACL whether explicit_bzero is available
This commit is contained in:
Malcolm Smith 2024-08-15 10:43:34 +01:00 committed by GitHub
parent b106cf8d97
commit 3950392f48
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GPG Key ID: B5690EEEBB952194
3 changed files with 22 additions and 1 deletions
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2
Makefile.pre.in
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@ -222,6 +222,7 @@ LIBMPDEC_A= Modules/_decimal/libmpdec/libmpdec.a
LIBEXPAT_A= Modules/expat/libexpat.a
LIBHACL_SHA2_A= Modules/_hacl/libHacl_Hash_SHA2.a
LIBHACL_BLAKE2_A= Modules/_hacl/libHacl_Hash_Blake2.a
LIBHACL_CFLAGS=@LIBHACL_CFLAGS@
LIBHACL_SIMD128_FLAGS=@LIBHACL_SIMD128_FLAGS@
LIBHACL_SIMD256_FLAGS=@LIBHACL_SIMD256_FLAGS@
LIBHACL_SIMD128_OBJS=@LIBHACL_SIMD128_OBJS@
@ -1368,7 +1369,6 @@ $(LIBEXPAT_A): $(LIBEXPAT_OBJS)
# Build HACL* static libraries for hashlib: libHacl_Hash_SHA2.a, and
# libHacl_Blake2.a -- the contents of the latter vary depending on whether we
# have the ability to compile vectorized versions
LIBHACL_CFLAGS=-I$(srcdir)/Modules/_hacl -I$(srcdir)/Modules/_hacl/include -D_BSD_SOURCE -D_DEFAULT_SOURCE $(PY_STDMODULE_CFLAGS) $(CCSHARED)
Modules/_hacl/Hacl_Hash_SHA2.o: $(srcdir)/Modules/_hacl/Hacl_Hash_SHA2.c $(LIBHACL_SHA2_HEADERS)
$(CC) -c $(LIBHACL_CFLAGS) -o $@ $(srcdir)/Modules/_hacl/Hacl_Hash_SHA2.c

11
configure generated vendored
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@ -717,6 +717,7 @@ LIBHACL_SIMD256_OBJS
LIBHACL_SIMD256_FLAGS
LIBHACL_SIMD128_OBJS
LIBHACL_SIMD128_FLAGS
LIBHACL_CFLAGS
MODULE__BLAKE2_FALSE
MODULE__BLAKE2_TRUE
MODULE__SHA3_FALSE
@ -30423,6 +30424,16 @@ fi
printf "%s\n" "$py_cv_module__blake2" >&6; }
LIBHACL_CFLAGS='-I$(srcdir)/Modules/_hacl -I$(srcdir)/Modules/_hacl/include -D_BSD_SOURCE -D_DEFAULT_SOURCE $(PY_STDMODULE_CFLAGS) $(CCSHARED)'
case "$ac_sys_system" in
Linux*)
if test "$ac_cv_func_explicit_bzero" = "no"; then
LIBHACL_CFLAGS="$LIBHACL_CFLAGS -DLINUX_NO_EXPLICIT_BZERO"
fi
;;
esac
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -msse -msse2 -msse3 -msse4.1 -msse4.2" >&5
printf %s "checking whether C compiler accepts -msse -msse2 -msse3 -msse4.1 -msse4.2... " >&6; }
if test ${ax_cv_check_cflags__Werror__msse__msse2__msse3__msse4_1__msse4_2+y}

10
configure.ac
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@ -7764,6 +7764,16 @@ PY_STDLIB_MOD([_sha2], [test "$with_builtin_sha2" = yes])
PY_STDLIB_MOD([_sha3], [test "$with_builtin_sha3" = yes])
PY_STDLIB_MOD([_blake2], [test "$with_builtin_blake2" = yes])
LIBHACL_CFLAGS='-I$(srcdir)/Modules/_hacl -I$(srcdir)/Modules/_hacl/include -D_BSD_SOURCE -D_DEFAULT_SOURCE $(PY_STDMODULE_CFLAGS) $(CCSHARED)'
case "$ac_sys_system" in
Linux*)
if test "$ac_cv_func_explicit_bzero" = "no"; then
LIBHACL_CFLAGS="$LIBHACL_CFLAGS -DLINUX_NO_EXPLICIT_BZERO"
fi
;;
esac
AC_SUBST([LIBHACL_CFLAGS])
dnl This can be extended here to detect e.g. Power8, which HACL* should also support.
AX_CHECK_COMPILE_FLAG([-msse -msse2 -msse3 -msse4.1 -msse4.2],[
[LIBHACL_SIMD128_FLAGS="-msse -msse2 -msse3 -msse4.1 -msse4.2"]