Add workaround for the wrong detected include path and linkage problems with vcpkg

Author: twistedfall

INSTALL.md

@@ -56,7 +56,7 @@ Installing OpenCV is easy through the following sources:
 * from [vcpkg](https://docs.microsoft.com/en-us/cpp/build/vcpkg), also install `llvm` package,
   necessary for building:
   ```shell script
-  vcpkg install llvm opencv4[contrib,nonfree]
+  vcpkg install llvm opencv4[contrib,nonfree,opencl]
   ```
   You most probably want to set environment variable `VCPKGRS_DYNAMIC` to "1" unless you're specifically
   targeting a static build.

build/library.rs

@@ -387,9 +387,21 @@ impl Library {
 		}
 		let opencv = opencv.ok_or_else(|| errors.join(", "))?;
 
-		let version = Self::version_from_include_paths(&opencv.include_paths);
+		let mut opencv_include_paths = opencv.include_paths;
+
+		let mut version = Self::version_from_include_paths(&opencv_include_paths);
+		// workaround for the wrong detected include path for vcpkg 2024.11.16+: https://github.com/twistedfall/opencv-rust/issues/640
+		if version.is_none() {
+			for include_path in &mut opencv_include_paths {
+				if include_path.ends_with("include") {
+					include_path.push("opencv4");
+					version = Self::version_from_include_paths(&[include_path]);
+					break;
+				}
+			}
+		}
 
-		let include_paths = Self::process_env_var_list(include_paths, opencv.include_paths);
+		let include_paths = Self::process_env_var_list(include_paths, opencv_include_paths);
 
 		let mut cargo_metadata = opencv.cargo_metadata;
 

ci/install-macos-vcpkg.sh

@@ -28,7 +28,7 @@ export VCPKG_DEFAULT_TRIPLET=arm64-osx
 	set +e
 	which cmake
 	cmake --version
-	if ! ./vcpkg install --clean-after-build --recurse "opencv[contrib,nonfree,ade]"; then
+	if ! ./vcpkg install --clean-after-build --recurse "opencv[contrib,nonfree,ade,opencl]"; then
 		for log in "$VCPKG_ROOT/buildtrees"/**/*out.log; do
 			echo "=== $log"
 			cat "$log"

ci/install-ubuntu-vcpkg.sh

@@ -37,7 +37,7 @@ export VCPKG_DEFAULT_TRIPLET=x64-linux
 	set +e
 	which cmake
 	cmake --version
-	if ! ./vcpkg install --clean-after-build --recurse "opencv[contrib,nonfree,ade]"; then
+	if ! ./vcpkg install --clean-after-build --recurse "opencv[contrib,nonfree,ade,opencl]"; then
 		for log in "$VCPKG_ROOT/buildtrees"/**/*out.log; do
 			echo "=== $log"
 			cat "$log"

ci/install-windows-vcpkg.sh

@@ -33,7 +33,7 @@ export VCPKG_DEFAULT_TRIPLET=x64-windows
 	set +e
 	which cmake
 	cmake --version
-	if ! ./vcpkg install --clean-after-build --recurse "opencv[contrib,nonfree,ade]"; then
+	if ! ./vcpkg install --clean-after-build --recurse "opencv[contrib,nonfree,ade,opencl]"; then
 		for log in "$VCPKG_ROOT/buildtrees"/**/*out.log; do
 			echo "=== $log"
 			cat "$log"