Recent versions of Meson report WARNING: pkgconfig variable 'cflags' not defined for dependency yajl. which makes sense, because "cflags" is not one of the variables reported by $ pkg-config --print-variables yajl and $ pkg-config --variable=cflags yajl doesn't work either. Use "includedir", which is a proper pkg-config variable, instead. Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt; --- meson.build | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/meson.build b/meson.build index ec7dcffac4..214a3f05eb 100644 --- a/meson.build +++ b/meson.build @@ -1356,17 +1356,18 @@ if yajl_dep.found() # # [1] https://github.com/Homebrew/homebrew-core/pull/74516 if host_machine.system() != 'linux' - cflags = yajl_dep.get_pkgconfig_variable('cflags') - if cflags.contains('include/yajl') + includedir = yajl_dep.get_pkgconfig_variable('includedir') + if includedir.contains('include/yajl') rc = run_command( 'python3', '-c', &#39;print(&quot;@0@&quot;.replace(&quot;@1(a)&quot;, &quot;@2(a)&quot;))&#39;.format( - cflags, 'include/yajl', 'include', + includedir, 'include/yajl', 'include', ), check: true, ) + includedir = rc.stdout().strip() yajl_dep = declare_dependency( - compile_args: rc.stdout().strip().split(), + compile_args: [ '-I' + includedir ], dependencies: [ yajl_dep ], ) endif -- 2.31.1