From 20ed3ab7c74c75c75ab9640452971693f95e0af1 Mon Sep 17 00:00:00 2001
From: solomocyj <solomoncyj@gmail.com>
Date: Thu, 12 Dec 2024 09:13:33 +0800
Subject: [PATCH] feat: set up macros for buildrequires generation

---
 data/macros.meson        |  5 +++++
 data/mesongenbuildreq.py | 16 ++++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 data/mesongenbuildreq.py

diff --git a/data/macros.meson b/data/macros.meson
index dcac9d98553c..237f583585ad 100644
--- a/data/macros.meson
+++ b/data/macros.meson
@@ -45,3 +45,8 @@
         --num-processes %{_smp_build_ncpus} \
         --print-errorlogs \
         %{nil}}
+
+%meson_buildrequires \
+     %{shrink: mesongenbuildreq %{__meson} \
+    %{nil}}
+    
diff --git a/data/mesongenbuildreq.py b/data/mesongenbuildreq.py
new file mode 100644
index 000000000000..ce9d5d2130d6
--- /dev/null
+++ b/data/mesongenbuildreq.py
@@ -0,0 +1,16 @@
+import subprocess
+import json
+import sys
+deps_json = json.loads(subprocess.run(['sys.argv[0]', "introspect", "--dependencies", "meson.build"], capture_output=True).stdout)
+deps = dict(zip([x['name'] for x in deps_json],[x['version'] for x in deps_json]))
+deps.pop('', None)
+for lib, versions in deps.items() :
+     # Prepare version constraint
+     version_str = ' ' + ' '.join(versions) if versions else ''
+     line = []
+     for prefix in ["cmake", "pkgconfig", "qmake"] :
+         buildreq = (f"{prefix}({lib}){version_str}")
+         if buildreq.split('=')[-1] == '' and '=' in buildreq :
+             buildreq = buildreq.split('=')[0]
+         line.append(buildreq)
+     print(f"BuildRequires: ({' or '.join(line)})")