[PATCH] build: add PPC64 Meson build

[Luca Boccassi <bluca@debian.org>]

This has been only build-tested for now, on a native ppc64el POWER8E
machine running Debian sid.

Signed-off-by: Luca Boccassi <bluca@debian.org>
---
The build box cannot be used to run DPDK as it doesn't have supported
NICs and root access. Would be great if someone could run-test it, but
at this point I think build support is enough to get started.

 config/meson.build                               |  8 ++++++++
 config/ppc_64/meson.build                        | 15 +++++++++++++++
 lib/librte_eal/common/arch/ppc_64/meson.build    |  5 +++++
 .../common/include/arch/ppc_64/meson.build       | 16 ++++++++++++++++
 4 files changed, 44 insertions(+)
 create mode 100644 config/ppc_64/meson.build
 create mode 100644 lib/librte_eal/common/arch/ppc_64/meson.build
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/meson.build

diff --git a/config/meson.build b/config/meson.build
index 4d755323f4..8e87b344c2 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -9,7 +9,13 @@ else
 endif
 dpdk_conf.set('RTE_MACHINE', machine)
 machine_args = []
+# ppc64 does not support -march=native
+if host_machine.cpu_family().startswith('ppc') and machine == 'native'
+machine_args += '-mcpu=' + machine
+machine_args += '-mtune=' + machine
+else
 machine_args += '-march=' + machine
+endif
 
 toolchain = cc.get_id()
 dpdk_conf.set_quoted('RTE_TOOLCHAIN', toolchain)
@@ -84,6 +90,8 @@ if host_machine.cpu_family().startswith('x86')
 	arch_subdir = 'x86'
 elif host_machine.cpu_family().startswith('arm') or host_machine.cpu_family().startswith('aarch')
 	arch_subdir = 'arm'
+elif host_machine.cpu_family().startswith('ppc')
+	arch_subdir = 'ppc_64'
 endif
 subdir(arch_subdir)
 dpdk_conf.set('RTE_COMPILE_TIME_CPUFLAGS', ','.join(compile_time_cpuflags))
diff --git a/config/ppc_64/meson.build b/config/ppc_64/meson.build
new file mode 100644
index 0000000000..d6faa7d64f
--- /dev/null
+++ b/config/ppc_64/meson.build
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2018 Luca Boccassi <bluca@debian.org>
+
+# for checking defines we need to use the correct compiler flags
+march_opt = '-march=@0@'.format(machine)
+
+dpdk_conf.set('RTE_ARCH', 'ppc_64')
+dpdk_conf.set('RTE_ARCH_PPC_64', 1)
+dpdk_conf.set('RTE_ARCH_64', 1)
+
+# overrides specific to ppc64
+dpdk_conf.set('RTE_MAX_LCORE', 256)
+dpdk_conf.set('RTE_MAX_NUMA_NODES', 32)
+dpdk_conf.set('RTE_CACHE_LINE_SIZE', 128)
+dpdk_conf.set('RTE_MAX_LCORE', 256)
diff --git a/lib/librte_eal/common/arch/ppc_64/meson.build b/lib/librte_eal/common/arch/ppc_64/meson.build
new file mode 100644
index 0000000000..40b3dc533a
--- /dev/null
+++ b/lib/librte_eal/common/arch/ppc_64/meson.build
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2018 Luca Boccassi <bluca@debian.org>
+
+eal_common_arch_sources = files('rte_cpuflags.c',
+	'rte_cycles.c', 'rte_hypervisor.c')
diff --git a/lib/librte_eal/common/include/arch/ppc_64/meson.build b/lib/librte_eal/common/include/arch/ppc_64/meson.build
new file mode 100644
index 0000000000..00f9611768
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/meson.build
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2018 Luca Boccassi <bluca@debian.org>
+
+install_headers(
+	'rte_atomic.h',
+	'rte_byteorder.h',
+	'rte_cpuflags.h',
+	'rte_cycles.h',
+	'rte_io.h',
+	'rte_memcpy.h',
+	'rte_pause.h',
+	'rte_prefetch.h',
+	'rte_rwlock.h',
+	'rte_spinlock.h',
+	'rte_vect.h',
+	subdir: get_option('include_subdir_arch'))
-- 
2.18.0