Fix grpcio-tools with protobuf 30

- Include protobuf source and check version matches protobuf package.
- Add protobuf source location to grpcio_tools GRPC_PYTHON_CFLAGS.
- Fixes #6.

.SRCINFO

@@ -24,8 +24,10 @@ pkgbase = grpc
 	makedepends = re2c
 	source = https://github.com/grpc/grpc/archive/v1.71.0/grpc-1.71.0.tar.gz
 	source = https://github.com/google/googletest/archive/2dd1c131950043a8ad5ab0d2dda0e0970596586a/googletest-2dd1c131950043a8ad5ab0d2dda0e0970596586a.tar.gz
+	source = https://github.com/protocolbuffers/protobuf/archive/v30.0/protobuf-30.0.tar.gz
 	sha256sums = 0d631419e54ec5b29def798623ee3bf5520dac77abeab3284ef7027ec2363f91
 	sha256sums = 31bf78bd91b96dd5e24fab3bb1d7f3f7453ccbaceec9afb86d6e4816a15ab109
+	sha256sums = 9df0e9e8ebe39f4fbbb9cf7db3d811287fe3616b2f191eb2bf5eaa12539c881f
 
 pkgname = grpc
 	depends = glibc

PKGBUILD

@@ -7,6 +7,7 @@ pkgbase='grpc'
 pkgname=('grpc' 'python-grpcio' 'python-grpcio-tools' 'php-grpc' 'php-legacy-grpc' 'grpc-cli')
 pkgver=1.71.0
 _gtestver=2dd1c131950043a8ad5ab0d2dda0e0970596586a
+_protover=30.0
 pkgrel=1
 pkgdesc="High performance, open source, general RPC framework that puts mobile and HTTP/2 first."
 arch=('x86_64')
@@ -32,9 +33,11 @@ makedepends=(
   're2c'
 )
 source=("https://github.com/grpc/grpc/archive/v$pkgver/$pkgbase-$pkgver.tar.gz"
-        "https://github.com/google/googletest/archive/$_gtestver/googletest-$_gtestver.tar.gz")
+        "https://github.com/google/googletest/archive/$_gtestver/googletest-$_gtestver.tar.gz"
+        "https://github.com/protocolbuffers/protobuf/archive/v$_protover/protobuf-$_protover.tar.gz")
 sha256sums=('0d631419e54ec5b29def798623ee3bf5520dac77abeab3284ef7027ec2363f91'
-            '31bf78bd91b96dd5e24fab3bb1d7f3f7453ccbaceec9afb86d6e4816a15ab109')
+            '31bf78bd91b96dd5e24fab3bb1d7f3f7453ccbaceec9afb86d6e4816a15ab109'
+            '9df0e9e8ebe39f4fbbb9cf7db3d811287fe3616b2f191eb2bf5eaa12539c881f')
 
 prepare() {
   cd "$srcdir/$pkgbase-$pkgver"
@@ -55,6 +58,11 @@ prepare() {
       -e '/^PROTOBUF_SUBMODULE_VERSION=/d' \
       tools/distrib/python/grpcio_tools/protoc_lib_deps.py
   ln -s ../../../.. tools/distrib/python/grpcio_tools/grpc_root
+
+  if ! pkgconf protobuf --exact-version=$_protover.0; then
+    echo "protobuf version mismatch"
+    exit 1
+  fi
 }
 
 build() {
@@ -119,7 +127,7 @@ build() {
 
   # grpcio-tools
   cd tools/distrib/python/grpcio_tools
-  GRPC_PYTHON_CFLAGS="-fno-wrapv -frtti $(pkg-config --cflags protobuf)" \
+  GRPC_PYTHON_CFLAGS="-fno-wrapv -frtti $(pkg-config --cflags protobuf) -I$srcdir/protobuf-$_protover/src" \
   GRPC_PYTHON_LDFLAGS="$(pkg-config --libs protobuf) -lprotoc" \
   python -m build --wheel --no-isolation
 }