From 0b32c33978fbe8772df6d185c9b9d646c442dc5d Mon Sep 17 00:00:00 2001 From: Fabrice Fontaine Date: Sun, 8 Aug 2021 19:00:35 +0200 Subject: [PATCH] meson.build: fix build with gcc < 7 Test if -Wimplicit-fallthrough is available before using it as it has been added only since gcc 7.1 and https://github.com/gcc-mirror/gcc/commit/81fea426da8c4687bb32e6894dc26f00ae211822 and so it will raise the following build failure with gcc < 7: arm-none-linux-gnueabi-gcc: error: unrecognized command line option '-Wimplicit-fallthrough' Fixes: - http://autobuild.buildroot.org/results/0ee6816a7cceebdafd07612677a594bdf68e0790 Signed-off-by: Fabrice Fontaine [Upstream status: https://github.com/kennylevinsen/seatd/pull/1] --- meson.build | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/meson.build b/meson.build index 1131b4b..c366a59 100644 --- a/meson.build +++ b/meson.build @@ -31,7 +31,6 @@ add_project_arguments( '-Wold-style-definition', # nop '-Wpointer-arith', '-Wstrict-prototypes', - '-Wimplicit-fallthrough', '-Wmissing-prototypes', '-Wno-unknown-warning-option', '-Wno-unused-command-line-argument', @@ -45,6 +44,11 @@ add_project_arguments( language: 'c', ) +cc = meson.get_compiler('c') +if cc.has_argument('-Wimplicit-fallthrough') + add_project_arguments('-Wimplicit-fallthrough' , language : 'c') +endif + if ['debugoptimized', 'release', 'minsize'].contains(get_option('buildtype')) add_project_arguments('-D_FORTIFY_SOURCE=2', language: 'c') endif -- 2.30.2