[RFC,0/2] Arm build options rework

  The current way of specifying Arm configuration options is insufficient
since we can't identify the SoC we're building for from the MIDR
information.

Instead use user input - the machine meson option to specify the SoC, e.g.:
meson soc_test -Dmachine=thunderx
meson soc_test --cross-file config/arm/thunderx/arm64_thunderx_linux_gcc

We also want to be able to disable which drivers (and possibly
libraries) are built without user input. This is useful when building:
1. on an SoC that is slow and we want to build only what is necessary
without the user having to check which libraries they have installed
2. a cross build on a fast aarch64 machine but with target SoC which
differs in capabilities or libraries.

Juraj Linkeš (2):
  build: rework Arm build options
  build: disable drivers from file

 config/arm/arm64_armv8_linux_gcc              |  28 ----
 .../arm/{ => armada}/arm64_armada_linux_gcc   |   2 +-
 config/arm/armada/meson.build                 |  31 ++++
 config/arm/default/arm64_armv8_linux_gcc      |  23 +++
 config/arm/default/meson.build                |   8 +
 config/arm/meson.build                        | 139 +++++++++++-------
 .../{ => thunderx}/arm64_thunderx_linux_gcc   |   2 +-
 config/arm/thunderx/meson.build               |  18 +++
 .../thunderxt88/arm64_thunderxt88_linux_gcc   |  16 ++
 config/arm/thunderxt88/meson.build            |  18 +++
 config/meson.build                            |   9 +-
 drivers/meson.build                           |  13 +-
 12 files changed, 218 insertions(+), 89 deletions(-)
 delete mode 100644 config/arm/arm64_armv8_linux_gcc
 rename config/arm/{ => armada}/arm64_armada_linux_gcc (93%)
 create mode 100644 config/arm/armada/meson.build
 create mode 100644 config/arm/default/arm64_armv8_linux_gcc
 create mode 100644 config/arm/default/meson.build
 rename config/arm/{ => thunderx}/arm64_thunderx_linux_gcc (92%)
 create mode 100644 config/arm/thunderx/meson.build
 create mode 100644 config/arm/thunderxt88/arm64_thunderxt88_linux_gcc
 create mode 100644 config/arm/thunderxt88/meson.build
  

Adding Ali

> -----Original Message-----
> From: Juraj Linkeš <juraj.linkes@pantheon.tech>
> Sent: Wednesday, September 23, 2020 8:19 AM
> To: bruce.richardson@intel.com; Ruifeng Wang <Ruifeng.Wang@arm.com>;
> Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>; Phil Yang
> <Phil.Yang@arm.com>; vcchunga@amazon.com; Dharmik Thakkar
> <Dharmik.Thakkar@arm.com>; jerinjacobk@gmail.com;
> hemant.agrawal@nxp.com
> Cc: dev@dpdk.org; Juraj Linkeš <juraj.linkes@pantheon.tech>
> Subject: [RFC PATCH 0/2] Arm build options rework
> 
> The current way of specifying Arm configuration options is insufficient since
> we can't identify the SoC we're building for from the MIDR information.
> 
> Instead use user input - the machine meson option to specify the SoC, e.g.:
> meson soc_test -Dmachine=thunderx
> meson soc_test --cross-file
> config/arm/thunderx/arm64_thunderx_linux_gcc
> 
> We also want to be able to disable which drivers (and possibly
> libraries) are built without user input. This is useful when building:
> 1. on an SoC that is slow and we want to build only what is necessary without
> the user having to check which libraries they have installed 2. a cross build on
> a fast aarch64 machine but with target SoC which differs in capabilities or
> libraries.
> 
> Juraj Linkeš (2):
>   build: rework Arm build options
>   build: disable drivers from file
> 
>  config/arm/arm64_armv8_linux_gcc              |  28 ----
>  .../arm/{ => armada}/arm64_armada_linux_gcc   |   2 +-
>  config/arm/armada/meson.build                 |  31 ++++
>  config/arm/default/arm64_armv8_linux_gcc      |  23 +++
>  config/arm/default/meson.build                |   8 +
>  config/arm/meson.build                        | 139 +++++++++++-------
>  .../{ => thunderx}/arm64_thunderx_linux_gcc   |   2 +-
>  config/arm/thunderx/meson.build               |  18 +++
>  .../thunderxt88/arm64_thunderxt88_linux_gcc   |  16 ++
>  config/arm/thunderxt88/meson.build            |  18 +++
>  config/meson.build                            |   9 +-
>  drivers/meson.build                           |  13 +-
>  12 files changed, 218 insertions(+), 89 deletions(-)  delete mode 100644
> config/arm/arm64_armv8_linux_gcc  rename config/arm/{ =>
> armada}/arm64_armada_linux_gcc (93%)  create mode 100644
> config/arm/armada/meson.build  create mode 100644
> config/arm/default/arm64_armv8_linux_gcc
>  create mode 100644 config/arm/default/meson.build  rename
> config/arm/{ => thunderx}/arm64_thunderx_linux_gcc (92%)  create mode
> 100644 config/arm/thunderx/meson.build  create mode 100644
> config/arm/thunderxt88/arm64_thunderxt88_linux_gcc
>  create mode 100644 config/arm/thunderxt88/meson.build
> 
> --
> 2.20.1