feat: Adds compile time feature vendored-unix-odbc

Author: pacman82

.github/workflows/test.yml

@@ -22,12 +22,12 @@ jobs:
       # Extract all files from installer
       - name: Install SQLite drivers
         run: |
-         Invoke-WebRequest http://www.ch-werner.de/sqliteodbc/sqliteodbc_w64.exe -OutFile C:\sqliteodbc.exe
-         7z x C:\sqliteodbc.exe -o"C:\Program Files\SQLite ODBC Driver for Win64"
-         REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\ODBC Drivers" /v "SQLite3 ODBC Driver" /t REG_SZ /d Installed /f
-         REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\SQLite3 ODBC Driver" /v "Driver" /t REG_SZ /d "C:\Program Files\SQLite ODBC Driver for Win64\sqlite3odbc.dll" /f
-         REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\SQLite3 ODBC Driver" /v "Setup" /t REG_SZ /d "C:\Program Files\SQLite ODBC Driver for Win64\sqlite3odbc.dll" /f
-         REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\SQLite3 ODBC Driver" /v "UsageCount" /t REG_DWORD /d 1
+          Invoke-WebRequest http://www.ch-werner.de/sqliteodbc/sqliteodbc_w64.exe -OutFile C:\sqliteodbc.exe
+          7z x C:\sqliteodbc.exe -o"C:\Program Files\SQLite ODBC Driver for Win64"
+          REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\ODBC Drivers" /v "SQLite3 ODBC Driver" /t REG_SZ /d Installed /f
+          REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\SQLite3 ODBC Driver" /v "Driver" /t REG_SZ /d "C:\Program Files\SQLite ODBC Driver for Win64\sqlite3odbc.dll" /f
+          REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\SQLite3 ODBC Driver" /v "Setup" /t REG_SZ /d "C:\Program Files\SQLite ODBC Driver for Win64\sqlite3odbc.dll" /f
+          REG ADD "HKLM\SOFTWARE\ODBC\ODBCINST.INI\SQLite3 ODBC Driver" /v "UsageCount" /t REG_DWORD /d 1
 
       # selecting a toolchain either by action or manual `rustup` calls should happen
       # before the plugin, as the cache uses the current rustc version as its cache key
@@ -117,10 +117,45 @@ jobs:
           cargo new test-compilation
           cd test-compilation
           cargo add odbc-api --path ../odbc-api/odbc-api --no-default-features --features odbc_version_3_5
-          cargo build 
+          cargo build
+
+  vendored_unix_odbc_linux:
+    name: Check build with vendored unixODBC on Linux
+    runs-on: ubuntu-latest
+
+    services:
+      sqlserver:
+        image: mcr.microsoft.com/mssql/server:2019-latest
+        ports:
+          - 1433:1433
+        env:
+          ACCEPT_EULA: Y
+          SA_PASSWORD: My@Test@Password1
+
+      postgres:
+        image: postgres:18
+        ports:
+          - "5432:5432"
+        env:
+          POSTGRES_DB: test
+          POSTGRES_USER: test
+          POSTGRES_PASSWORD: test
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install latests rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          default: true
+          override: true
+      - name: test
+        run: |
+          cargo test --features vendored-unix-odbc -- --skip maria_db
 
   dependabot:
-    needs: [linux,win64,osx,win32]
+    needs: [linux, win64, osx, win32]
     permissions:
       pull-requests: write
       contents: write
@@ -131,4 +166,4 @@ jobs:
         run: gh pr merge --auto --rebase "$PR_URL"
         env:
           PR_URL: ${{github.event.pull_request.html_url}}
-          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

Cargo.lock

@@ -79,6 +79,14 @@ iodbc = ["odbc_version_3_5", "narrow", "odbc-sys/iodbc"]
 # Allows deriving custom implementations of `FetchRow` for row wise bulk fetching.
 derive = ["dep:odbc-api-derive"]
 
+# Use this to build unixODBC as a dependency of odbc-sys and link statically againts it. This can
+# make installation of your artifact easier, because users may not need to install a driver manager.
+# However, please note that unixODBC is published under an LGPL license, so by statically linking
+# you need to take the implications for your artifact into account. `odbc-api` itself is MIT
+# licensed. In order to build unixODBC it draws in an optional dependency containing the unixODBC
+# source code, which is licensed under the same terms as unixODBC itself.
+vendored-unix-odbc = ["odbc-sys/vendored-unix-odbc"]
+
 default = ["odbc_version_3_80", "prompt"]
 
 # ODBC offers an interface to prompt the user for a connection string. This requires passing a
@@ -93,7 +101,7 @@ prompt = ["dep:winit"]
 
 [dependencies]
 # Low level bindings to ODBC API calls into libodbc.so
-odbc-sys = { version = "0.27", default-features = false }
+odbc-sys = { version = "0.27.1", default-features = false }
 # Used to generate code for the error type
 thiserror = "2.0.17"
 # Used as a log frontend to emit log messages for applications