All 64-bit architectures are supposed to define CONFIG_64BIT to support
the relevant 64-bit MMIO accessors. The sandbox architecture is a bit
of a special case, because barebox uses the toolchain default and
doesn't force a bitness. Add 64BIT as promptless symbol, which reflects
the pointer size of the target platform.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
arch/sandbox/Kconfig | 9 +++++++++
scripts/gcc-64bitptr.sh | 9 +++++++++
2 files changed, 18 insertions(+)
create mode 100755 scripts/gcc-64bitptr.sh
diff --git a/arch/sandbox/Kconfig b/arch/sandbox/Kconfig
index 6ec71a99e53f..46cfe8b4b1c8 100644
--- a/arch/sandbox/Kconfig
+++ b/arch/sandbox/Kconfig
@@ -1,3 +1,5 @@
+source "scripts/Kconfig.include"
+
config SANDBOX
bool
select OFTREE
@@ -20,3 +22,10 @@ config SANDBOX_UNWIND
default y
select ARCH_HAS_STACK_DUMP
depends on UBSAN || KASAN
+
+config CC_IS_64BIT
+ def_bool $(success,$(srctree)/scripts/gcc-64bitptr.sh $(CC))
+
+config 64BIT
+ bool
+ default CC_IS_64BIT
diff --git a/scripts/gcc-64bitptr.sh b/scripts/gcc-64bitptr.sh
new file mode 100755
index 000000000000..7fb05703b813
--- /dev/null
+++ b/scripts/gcc-64bitptr.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+cat << "END" | $@ -x c - -c -o /dev/null
+int main(void)
+{
+ return sizeof(struct { int:-!(sizeof(void *) == 8); });
+}
+END
--
2.27.0
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