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meson: check for libcap via pkg-config

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It's possible that setcap is installed, but the libcap headers/libs aren't (e.g.
during cross compilation, when you have the program installed for the host,
but need the headers of the target). Also removes the need to manually check
for the libcap headers.
This commit is contained in:
Rasmus Thomsen 2019-04-20 22:26:52 +02:00 committed by Rasmus Thomsen
parent f57e79a073
commit cc9c3c3175
1 changed files with 7 additions and 13 deletions
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20
libs/gst/helpers/meson.build
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@ -64,16 +64,8 @@ if have_ptp
description : 'getifaddrs() and AF_LINK is available') description : 'getifaddrs() and AF_LINK is available')
endif endif
gst_ptp_have_cap = false setcap_prog = find_program('setcap', '/usr/sbin/setcap', '/sbin/setcap', required : false)
cap_dep = [] cap_dep = dependency('libcap', required: false)
if cc.has_header('sys/capability.h')
cap_dep = cc.find_library('cap', required : false)
if cap_dep.found() and cc.has_function('cap_init', dependencies : cap_dep)
gst_ptp_have_cap = true
endif
endif
setcap = find_program('setcap', '/usr/sbin/setcap', '/sbin/setcap', required : false)
# user/group to change to in gst-ptp-helper # user/group to change to in gst-ptp-helper
ptp_helper_setuid_user = get_option('ptp-helper-setuid-user') ptp_helper_setuid_user = get_option('ptp-helper-setuid-user')
@ -90,7 +82,7 @@ if have_ptp
# how to install gst-ptp-helper # how to install gst-ptp-helper
with_ptp_helper_permissions = get_option('ptp-helper-permissions') with_ptp_helper_permissions = get_option('ptp-helper-permissions')
if with_ptp_helper_permissions == 'auto' if with_ptp_helper_permissions == 'auto'
if gst_ptp_have_cap and setcap.found() if setcap_prog.found() and cap_dep.found()
with_ptp_helper_permissions = 'capabilities' with_ptp_helper_permissions = 'capabilities'
else else
with_ptp_helper_permissions = 'setuid-root' with_ptp_helper_permissions = 'setuid-root'
@ -104,8 +96,10 @@ if have_ptp
cdata.set('HAVE_PTP_HELPER_SETUID', 1, cdata.set('HAVE_PTP_HELPER_SETUID', 1,
description : 'Use setuid-root for permissions in PTP helper') description : 'Use setuid-root for permissions in PTP helper')
elif with_ptp_helper_permissions == 'capabilities' elif with_ptp_helper_permissions == 'capabilities'
if not setcap.found() if not setcap_prog.found()
error('capabilities-based ptp-helper-permissions requested, but could not find setcap tool.') error('capabilities-based ptp-helper-permissions requested, but could not find setcap tool.')
elif not cap_dep.found()
error('capabilities-based ptp-helper-permissions requested, but could not find libcap.')
endif endif
cdata.set('HAVE_PTP_HELPER_CAPABILITIES', 1, cdata.set('HAVE_PTP_HELPER_CAPABILITIES', 1,
description : 'Use capabilities for permissions in PTP helper') description : 'Use capabilities for permissions in PTP helper')
@ -122,7 +116,7 @@ if have_ptp
meson.add_install_script('ptp_helper_post_install.sh', meson.add_install_script('ptp_helper_post_install.sh',
helpers_install_dir, with_ptp_helper_permissions, helpers_install_dir, with_ptp_helper_permissions,
setcap.found() ? setcap.path() : '') setcap_prog.found() ? setcap_prog.path() : '')
endif endif
install_data(['gst_gdb.py', 'glib_gobject_helper.py'], install_data(['gst_gdb.py', 'glib_gobject_helper.py'],