From 1db1e31e664c1f613dc964d8519fe75d67b154b6 Mon Sep 17 00:00:00 2001 From: Christian Rauch Date: Thu, 16 Dec 2021 23:53:31 +0000 Subject: meson: reduce required version to 0.53 Building the libcamera Android layer currently makes use of features from meson 0.55. The core libcamera framework in the default configuration without android enabled uses the 'summary' feature available in 0.53, and is the lowest supportable meson version if the Android HAL is excluded. Ubuntu 20.04 LTS currently provides meson 0.53 and represents an acceptable minimum version to support. Platforms utilising the Android component will have full control over their build environment and can ensure that they provide a more recent version of meson. Reduce the supported meson version for the project to 0.53 to facilitate building on more distributions without having to manually update the meson package. Meson will output a warning that features not available in 0.53 are used if the Android HAL is enabled. This is considered as an acceptable middleground to improve the experience on the latest Ubuntu LTS, until 22.04 LTS is released and provides a newer meson version. Signed-off-by: Christian Rauch [Kieran: Add comment about the android meson requirements] Signed-off-by: Kieran Bingham Reviewed-by: Laurent Pinchart --- README.rst | 4 +++- meson.build | 6 +++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/README.rst b/README.rst index 05f0e6f2..ca8a97cb 100644 --- a/README.rst +++ b/README.rst @@ -47,7 +47,9 @@ A C++ toolchain: [required] Either {g++, clang} Meson Build system: [required] - meson (>= 0.55) ninja-build pkg-config + meson (>= 0.53) ninja-build pkg-config + + meson (>= 0.55) is required for building Android (-Dandroid=enabled) If your distribution doesn't provide a recent enough version of meson, you can install or upgrade it using pip3. diff --git a/meson.build b/meson.build index a20cc29e..9684d562 100644 --- a/meson.build +++ b/meson.build @@ -1,7 +1,11 @@ # SPDX-License-Identifier: CC0-1.0 project('libcamera', 'c', 'cpp', - meson_version : '>= 0.55', + # Use of the Android component requires meson 0.55, but Ubuntu 20.04 LTS + # ships meson 0.53. Improve the Ubuntu experience at the expense of + # Android as the former is a much more common use case than the latter at + # this point. This should be fixed after Ubuntu releases 22.04 LTS. + meson_version : '>= 0.53', version : '0.0.0', default_options : [ 'werror=true', -- cgit v1.2.1