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Add support for -fcf-protection

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This commit is contained in:
Xavier Roche
2023-01-14 15:19:12 +01:00
parent 2dc4f2565c
commit a396b12972
2 changed files with 36 additions and 0 deletions
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35
configure vendored
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@@ -13699,6 +13699,41 @@ else
:
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fcf-protection" >&5
$as_echo_n "checking whether C compiler accepts -fcf-protection... " >&6; }
if ${ax_cv_check_cflags___fcf_protection+:} false; then :
$as_echo_n "(cached) " >&6
else
ax_check_save_flags=$CFLAGS
CFLAGS="$CFLAGS -fcf-protection"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
ax_cv_check_cflags___fcf_protection=yes
else
ax_cv_check_cflags___fcf_protection=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
CFLAGS=$ax_check_save_flags
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fcf_protection" >&5
$as_echo "$ax_cv_check_cflags___fcf_protection" >&6; }
if test "x$ax_cv_check_cflags___fcf_protection" = xyes; then :
DEFAULT_CFLAGS="$DEFAULT_CFLAGS -fcf-protection"
else
:
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker accepts -Wl,--discard-all" >&5
$as_echo_n "checking whether the linker accepts -Wl,--discard-all... " >&6; }
if ${ax_cv_check_ldflags___Wl___discard_all+:} false; then :

1
configure.ac
View File

@@ -76,6 +76,7 @@ AX_CHECK_COMPILE_FLAG([-Wignored-qualifiers], [DEFAULT_CFLAGS="$DEFAULT_CFLAGS -
AX_CHECK_COMPILE_FLAG([-fstrict-aliasing -Wstrict-aliasing], [DEFAULT_CFLAGS="$DEFAULT_CFLAGS -fstrict-aliasing -Wstrict-aliasing"])
AX_CHECK_COMPILE_FLAG([-fstack-protector], [DEFAULT_CFLAGS="$DEFAULT_CFLAGS -fstack-protector"])
AX_CHECK_COMPILE_FLAG([-fstack-clash-protection], [DEFAULT_CFLAGS="$DEFAULT_CFLAGS -fstack-clash-protection"])
AX_CHECK_COMPILE_FLAG([-fcf-protection], [DEFAULT_CFLAGS="$DEFAULT_CFLAGS -fcf-protection"])
AX_CHECK_LINK_FLAG([-Wl,--discard-all], [DEFAULT_LDFLAGS="$DEFAULT_LDFLAGS -Wl,--discard-all"])
AX_CHECK_LINK_FLAG([-Wl,--no-undefined], [DEFAULT_LDFLAGS="$DEFAULT_LDFLAGS -Wl,--no-undefined"])
AX_CHECK_LINK_FLAG([-Wl,-z,relro,-z,now], [DEFAULT_LDFLAGS="$DEFAULT_LDFLAGS -Wl,-z,relro,-z,now"])