Detect os family automatically

Author: twistedfall

.github/workflows/opencv-rust.yml

@@ -47,14 +47,10 @@ jobs:
           key: build-${{ matrix.opencv-version }}-${{ matrix.linkage }}-${{ matrix.os-image }}
 
       - name: Install dependencies
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/install.sh
         shell: bash
 
       - name: Test project
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/script.sh
         shell: bash
 
@@ -83,14 +79,10 @@ jobs:
           key: vcpkg-${{ matrix.vcpkg-version }}-${{ matrix.os-image }}
 
       - name: Install dependencies
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/install.sh
         shell: bash
 
       - name: Test project
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/script.sh
         shell: bash
 
@@ -125,14 +117,10 @@ jobs:
       - uses: mozilla-actions/sccache-action@v0.0.5
 
       - name: Install dependencies
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/install.sh
         shell: bash
 
       - name: Test project
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/script.sh
         shell: bash
 
@@ -177,13 +165,9 @@ jobs:
           toolchain: ${{ steps.metadata.outputs.msrv }}
 
       - name: Install dependencies
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/install.sh
         shell: bash
 
       - name: Check project
-        env:
-          OS_FAMILY: ${{ runner.os }}
         run: ci/msrv.sh
         shell: bash

ci/install.sh

@@ -4,23 +4,35 @@ set -xeu
 
 ci_dir="$(dirname "$0")"
 
-if [[ "$OS_FAMILY" == "Linux" ]]; then
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+	os_family="Linux"
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+	os_family="macOS"
+elif [[ "$OSTYPE" == "cygwin" || "$OSTYPE" == "msys" || "$OSTYPE" == "win32" ]]; then
+	os_family="Windows"
+elif [[ "$OSTYPE" == "freebsd"* ]]; then
+	exit "FreeBSD is not supported"
+else
+	exit "Unknown OS: $OSTYPE"
+fi
+
+if [[ "$os_family" == "Linux" ]]; then
 	# free up disk space in Github Actions image: https://github.com/actions/runner-images/issues/2840
 	sudo rm -rf /usr/share/dotnet /opt/ghc /usr/local/share/boost
 	if [[ "${VCPKG_VERSION:-}" != "" ]]; then # vcpkg build
 		"$ci_dir/install-ubuntu-vcpkg.sh"
 	else
 		"$ci_dir/install-ubuntu.sh"
 	fi
-elif [[ "$OS_FAMILY" == "macOS" ]]; then
+elif [[ "$os_family" == "macOS" ]]; then
 	if [[ "${BREW_OPENCV_VERSION:-}" != "" ]]; then # brew build
 		"$ci_dir/install-macos-brew.sh"
 	elif [[ "${VCPKG_VERSION:-}" != "" ]]; then # vcpkg build
 		"$ci_dir/install-macos-vcpkg.sh"
 	else
 		"$ci_dir/install-macos-framework.sh"
 	fi
-elif [[ "$OS_FAMILY" == "Windows" ]]; then
+elif [[ "$os_family" == "Windows" ]]; then
 	export CHOCO_LLVM_VERSION=18.1.6
 	if [[ "${VCPKG_VERSION:-}" != "" ]]; then # vcpkg build
 		"$ci_dir/install-windows-vcpkg.sh"

ci/script.sh

@@ -2,7 +2,19 @@
 
 set -xeu
 
-if [[ "$OS_FAMILY" == "Windows" ]]; then
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+	os_family="Linux"
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+	os_family="macOS"
+elif [[ "$OSTYPE" == "cygwin" || "$OSTYPE" == "msys" || "$OSTYPE" == "win32" ]]; then
+	os_family="Windows"
+elif [[ "$OSTYPE" == "freebsd"* ]]; then
+	exit "FreeBSD is not supported"
+else
+	exit "Unknown OS: $OSTYPE"
+fi
+
+if [[ "$os_family" == "Windows" ]]; then
 	export PATH="/C/Program Files/LLVM/bin:$PATH"
 	export LIBCLANG_PATH="C:/Program Files/LLVM/bin"
 	if [[ "${VCPKG_VERSION:-}" != "" ]]; then # vcpkg build
@@ -18,7 +30,7 @@ if [[ "$OS_FAMILY" == "Windows" ]]; then
 	fi
 	echo "=== Installed chocolatey packages:"
 	choco list
-elif [[ "$OS_FAMILY" == "macOS" ]]; then
+elif [[ "$os_family" == "macOS" ]]; then
 	xcode_select="xcode-select" # IDEA code highlighting workaround
 	toolchain_path="$($xcode_select --print-path)/Toolchains/XcodeDefault.xctoolchain/"
 	export DYLD_FALLBACK_LIBRARY_PATH="$toolchain_path/usr/lib/"
@@ -37,7 +49,7 @@ elif [[ "$OS_FAMILY" == "macOS" ]]; then
 	fi
 	echo "=== Installed brew packages:"
 	brew list --versions
-elif [[ "$OS_FAMILY" == "Linux" ]]; then
+elif [[ "$os_family" == "Linux" ]]; then
 	if [[ "${VCPKG_VERSION:-}" != "" ]]; then # vcpkg build
 		export VCPKG_ROOT="$HOME/build/vcpkg"
 		echo "=== Installed vcpkg packages:"

tools/test.sh

@@ -5,8 +5,6 @@ set -eu
 script_dir="$(dirname "$(readlink -f "$BASH_SOURCE")")"
 cd "$script_dir/.."
 
-export OS_FAMILY="linux"
-
 (
 	. "$script_dir/env-34.sh"
 	ci/script.sh