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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f3e4aa1a18
commit 6adfb120ab added this flag to fix
builds with `-Werror`, and afterwards it was changed to use a version
check when newer versions of openexr moved over to C++11.
However, some distros have backported patches to older openexr
versions which make it require C++11, which makes the version check
incorrect and causes an error because we passed `-Werror -std=c++98`.
Instead, directly check when usage of the header requires `-std=c++98`
with `-Werror` and override the `cpp_std` setting on the target.
Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/1117
37 lines
1.6 KiB
Meson
37 lines
1.6 KiB
Meson
openexr_dep = dependency('OpenEXR', required: get_option('openexr'))
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if openexr_dep.found()
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openexr_override_options = []
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# Older versions of openexr fail to build with -Werror when using GCC >= 9.2
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# and Clang >= 6 because it uses deprecated C++98 syntax. Explicitly pass
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# -std=c++98 in those cases. Just checking the openexr version is not enough
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# because distros (such as Ubuntu 18.04) have backported patches due to which
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# older openexr versions now require C++11.
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if openexr_dep.version().version_compare('< 2.4.0')
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# Check whether using the openexr headers with -Werror causes an error
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if cxx.has_argument('-Werror') and cxx.check_header('ImfRgbaFile.h', dependencies: openexr_dep)
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if not cxx.check_header('ImfRgbaFile.h', dependencies: openexr_dep, args: '-Werror')
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# If setting -std to c++98 fixes it, use that! Else, warn.
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if cxx.check_header('ImfRgbaFile.h', dependencies: openexr_dep, args: ['-Werror', '-std=c++98'])
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openexr_override_options = ['cpp_std=c++98']
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else
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warning('openexr headers can\'t be included with \'-Werror\', and no workaround found')
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endif
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endif
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endif
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endif
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gstopenexr = library('gstopenexr',
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'gstopenexr.c',
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'gstopenexrdec.cpp',
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c_args: gst_plugins_bad_args,
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cpp_args: gst_plugins_bad_args,
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link_args: noseh_link_args,
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include_directories: [configinc, libsinc],
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dependencies: [gstvideo_dep, openexr_dep],
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override_options: openexr_override_options,
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install: true,
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install_dir: plugins_install_dir,
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)
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pkgconfig.generate(gstopenexr, install_dir: plugins_pkgconfig_install_dir)
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plugins += [gstopenexr]
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endif
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