3rdparty/ext_ffmpeg/0003-ffmpeg-Add-options-for-SSP-and-CFGuard.patch

0001 From 7aa8faf667f47e3679928fd415aac91f9a1b4e71 Mon Sep 17 00:00:00 2001
0002 From: Dmitry Kazakov <dimula73@gmail.com>
0003 Date: Tue, 11 Apr 2023 14:55:10 +0200
0004 Subject: [PATCH 3/3] Add options for SSP and CFGuard
0005
0006 ---
0007  meson.build       | 13 +++++++++++++
0008  meson_options.txt |  2 ++
0009  2 files changed, 15 insertions(+)
0010
0011 diff --git a/meson.build b/meson.build
0012 index a14241eb45..8e0d2fa713 100644
0013 --- a/meson.build
0014 +++ b/meson.build
0015 @@ -464,6 +464,19 @@ types_list = [
0016    'struct_v4l2_frmivalenum_discrete',
0017  ]
0018
0019 +option_cfguard = get_option('enable-cfguard').require(cc.has_argument('-mguard=cf'), error_message : 'Compiler does not support cfguard')
0020 +if option_cfguard.allowed()
0021 +  add_global_arguments('-mguard=cf', language : ['c', 'cpp'])
0022 +  add_global_link_arguments('-mguard=cf', language : ['c', 'cpp'])
0023 +  message('Enabled CFGuard')
0024 +endif
0025 +
0026 +if get_option('enable-ssp').require(cc.has_argument('-fstack-protector-strong'), error_message : 'Compiler does not support -fstack-protector-strong').allowed()
0027 +  add_global_arguments('-fstack-protector-strong', language : ['c', 'cpp'])
0028 +  add_global_link_arguments('-fstack-protector-strong', language : ['c', 'cpp'])
0029 +  message('Enabled SSP')
0030 +endif
0031 +
0032  if get_option('no_uninit_ub')
0033    add_global_arguments('-DDISABLE_AV_UNINIT_UB=1', language : 'c')
0034    add_global_arguments('-DDISABLE_AV_UNINIT_UB=1', language : 'cpp')
0035 diff --git a/meson_options.txt b/meson_options.txt
0036 index d02877e76c..4452ddce72 100644
0037 --- a/meson_options.txt
0038 +++ b/meson_options.txt
0039 @@ -2203,3 +2203,5 @@ option('inline_asm', type: 'feature', value: 'enabled', description: 'Enable inl
0040  option('cli', type: 'feature', value: 'disabled')
0041  option('tests', type : 'feature', value : 'auto', description : 'Build tests', yield : true)
0042  option('no_uninit_ub', type: 'boolean', value: false, description: 'Disable UB in av_uninit optimization')
0043 +option('enable-ssp', type: 'feature', value: 'enabled', description: 'Enable -fstack-protector-strong')
0044 +option('enable-cfguard', type: 'feature', value: 'auto', description: 'Enable control flow guard')
0045 --
0046 2.40.1.windows.1
0047