From d11705f9d08c06781bf5d93ba4d8d22581c9e0d8 Mon Sep 17 00:00:00 2001
From: t-nojiri <68096132+t-nojiri@users.noreply.github.com>
Date: Wed, 9 Sep 2020 16:01:51 +0900
Subject: r-ff: support for aarch64 (#18585)

---
 var/spack/repos/builtin/packages/r-ff/package.py              |  2 ++
 .../repos/builtin/packages/r-ff/utk_platform_macros.hpp.patch | 11 +++++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 var/spack/repos/builtin/packages/r-ff/utk_platform_macros.hpp.patch

diff --git a/var/spack/repos/builtin/packages/r-ff/package.py b/var/spack/repos/builtin/packages/r-ff/package.py
index 7ff486acaf..72eb021612 100644
--- a/var/spack/repos/builtin/packages/r-ff/package.py
+++ b/var/spack/repos/builtin/packages/r-ff/package.py
@@ -19,3 +19,5 @@ class RFf(RPackage):
 
     depends_on('r@2.10.1:', type=('build', 'run'))
     depends_on('r-bit@1.1-13:', type=('build', 'run'))
+
+    patch('utk_platform_macros.hpp.patch', when='target=aarch64:')
diff --git a/var/spack/repos/builtin/packages/r-ff/utk_platform_macros.hpp.patch b/var/spack/repos/builtin/packages/r-ff/utk_platform_macros.hpp.patch
new file mode 100644
index 0000000000..0bd4592839
--- /dev/null
+++ b/var/spack/repos/builtin/packages/r-ff/utk_platform_macros.hpp.patch
@@ -0,0 +1,11 @@
+--- spack-src/src/utk_platform_macros.hpp.bak	2017-04-09 00:25:51.000000000 +0900
++++ spack-src/src/utk_platform_macros.hpp	2020-08-26 09:43:04.464838833 +0900
+@@ -136,6 +136,8 @@
+     #define UTK__Arch_ARM_THUMB
+   #elif defined(__sh__)
+     #define UTK__Arch_SuperH
++  #elif defined(__aarch64__)
++    #define UTK__Arch_ARM64
+   #else
+     #error Architecture not supported.
+   #endif
-- 
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