package/harfbuzz: fix race during compilation

new file mode 100644
index 0000000000..0ad26069dc
@@ -0,0 +1,53 @@
+From: Michael Nosthoff <[email protected]>
+Subject: [PATCH] meson: order GPU compilation after shader header generation
+
+The shader header custom targets are built by default, but their outputs
+are not included in the sources of libharfbuzz-gpu. This allows Ninja to
+compile the GPU sources concurrently with shader header generation.
+
+The generator also copies each generated header into the source directory.
+The GPU sources use quoted includes, which find these source-tree copies
+first. Since the copy truncates its destination before writing, a compiler
+running concurrently can read an empty header and report undeclared shader
+symbols.
+
+Collect the shader header targets and add them to the GPU library sources.
+Meson then orders compilation after those targets have completed, including
+their copies back into the source tree.
+
+Keep the existing build-by-default behavior unchanged.
+
+Fixes: b1ad797 ("[gpu] Commit stringized shader headers; auto-regenerate like ragel")
+
+Signed-off-by: Michael Nosthoff <[email protected]>
+Assisted-by: Copilot <[email protected]>
+
+Upstream: https://github.com/harfbuzz/harfbuzz/pull/6590
+
+---
+ src/meson.build | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/src/meson.build b/src/meson.build
+--- a/src/meson.build
++++ b/src/meson.build
+@@ -851,8 +851,9 @@ hb_gpu_shader_sources = [
+ ]
+ 
+ hb_gpu_shader_helper = find_program('gen-gpu-shader-artifacts.py')
++hb_gpu_shader_headers = []
+ foreach p: hb_gpu_shader_sources
+-  custom_target('@0@'.format(p.get(1)),
++  hb_gpu_shader_headers += custom_target('@0@'.format(p.get(1)),
+     build_by_default: true,
+     input: p.get(0),
+     output: p.get(1),
+@@ -877,6 +878,7 @@ if not get_option('gpu').disabled()
+ 
+   libharfbuzz_gpu = library('harfbuzz-gpu',
+     hb_gpu_sources,
++    hb_gpu_shader_headers,
+     include_directories: incconfig,
+     dependencies: gpu_deps,
+     link_with: [libharfbuzz],
+