[PATCH libevl v2] build: add initial RISC-V support

Provide the basic build infrastructure and VDSO definitions
required to build libevl on RISC-V.

Signed-off-by: Tobias Schaffner <[email protected]>
---
 lib/arch/riscv/include/asm/evl/vdso.h | 14 ++++++++++++++
 meson.build                           |  4 ++++
 meson/riscv64-linux-gnu               | 17 +++++++++++++++++
 3 files changed, 35 insertions(+)
 create mode 100644 lib/arch/riscv/include/asm/evl/vdso.h
 create mode 100644 meson/riscv64-linux-gnu

diff --git a/lib/arch/riscv/include/asm/evl/vdso.h b/lib/arch/riscv/include/asm/evl/vdso.h
new file mode 100644
index 0000000..5e331fb
--- /dev/null
+++ b/lib/arch/riscv/include/asm/evl/vdso.h
@@ -0,0 +1,14 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2021 Philippe Gerum  <[email protected]>
+ */
+
+#ifndef _LIB_EVL_RISCV_VDSO_H
+#define _LIB_EVL_RISCV_VDSO_H
+
+#define __EVL_VDSO_KVERSION "LINUX_4.15"
+
+#define __EVL_VDSO_GETTIME "__vdso_clock_gettime"
+
+#endif /* !_LIB_EVL_RISCV_VDSO_H */
diff --git a/meson.build b/meson.build
index 674c661..4acbc40 100644
--- a/meson.build
+++ b/meson.build
@@ -63,6 +63,10 @@ if libevl_arch == 'aarch64'
     libevl_arch = 'arm64'
 endif
 
+if libevl_arch == 'riscv64'
+    libevl_arch = 'riscv'
+endif
+
 post_install = find_program('post-install.sh',
     dirs : libevl_scripts,
     required : true
diff --git a/meson/riscv64-linux-gnu b/meson/riscv64-linux-gnu
new file mode 100644
index 0000000..b99fc0f
--- /dev/null
+++ b/meson/riscv64-linux-gnu
@@ -0,0 +1,17 @@
+[binaries]
+c = 'riscv64-linux-gnu-gcc'
+cpp = 'riscv64-linux-gnu-g++'
+ar = 'riscv64-linux-gnu-ar'
+strip = 'riscv64-linux-gnu-strip'
+pkgconfig = 'riscv64-linux-gnu-pkg-config'
+pcap-config = ''
+
+[host_machine]
+system = 'linux'
+cpu_family = 'riscv64'
+cpu = 'riscv64'
+endian = 'little'
+
+[properties]
+platform = 'generic_riscv64'
+needs_exe_wrapper = false
-- 
2.43.0