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meson: Provide default values for nonexistent xenlight pkgconfig vars

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It may happen that xenlight pkgconfig file does not contain
'xenfirmwaredir' and/or 'libexec_bin' variables, which is okay
and we have code that deals with this situation. But that code is
executed when the queried value is an empty string. This may not
always be the case and we should specifically set 'default_value'
so that the empty string is returned if pkgconfig variable
doesn't exist.

Fixes: 968479adcf
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
This commit is contained in:
Michal Privoznik 2022-12-12 12:46:41 +01:00
parent 6a58b9b5ed
commit 03a25597f1
1 changed files with 2 additions and 2 deletions
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meson.build
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@ -1433,8 +1433,8 @@ if not get_option('driver_libxl').disabled() and conf.has('WITH_LIBVIRTD')
libxl_dep = dependency('xenlight', version: '>=' + libxl_version, required: get_option('driver_libxl'))
if libxl_dep.found()
libxl_firmware_dir = libxl_dep.get_variable(pkgconfig : 'xenfirmwaredir')
libxl_execbin = libxl_dep.get_variable(pkgconfig : 'libexec_bin')
libxl_firmware_dir = libxl_dep.get_variable(pkgconfig : 'xenfirmwaredir', default_value: '')
libxl_execbin = libxl_dep.get_variable(pkgconfig : 'libexec_bin', default_value: '')
if libxl_firmware_dir != ''
conf.set_quoted('LIBXL_FIRMWARE_DIR', libxl_firmware_dir)
endif