Update .def files for dynamic linking and adjust NDK version in config.toml

- Switched from `staticLibraries` to `linkerOpts` for Android builds across MySQL, PostgreSQL, and SQLite.
- Updated Android NDK version in `config.toml` from 35 to 21 for compatibility.

Author: smyrgeorge

scripts/config.toml

@@ -1,9 +1,11 @@
+# Set this config to your ~/.cargo/config.toml
+# Konan uses NDK 21: https://github.com/JetBrains/kotlin/blob/master/kotlin-native/konan/konan.properties
 [target.aarch64-linux-android]
-linker = "/opt/homebrew/share/android-ndk/toolchains/llvm/prebuilt/darwin-x86_64/bin/aarch64-linux-android35-clang"
+linker = "/opt/homebrew/share/android-ndk/toolchains/llvm/prebuilt/darwin-x86_64/bin/aarch64-linux-android21-clang"
 ar = "/opt/homebrew/share/android-ndk/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-ar"
 
 [target.x86_64-linux-android]
-linker = "/opt/homebrew/share/android-ndk/toolchains/llvm/prebuilt/darwin-x86_64/bin/x86_64-linux-android35-clang"
+linker = "/opt/homebrew/share/android-ndk/toolchains/llvm/prebuilt/darwin-x86_64/bin/x86_64-linux-android21-clang"
 ar = "/opt/homebrew/share/android-ndk/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-ar"
 
 [target.aarch64-unknown-linux-gnu]

sqlx4k-mysql/src/nativeInterop/cinterop/sqlx4k-android.def

@@ -1,6 +1,5 @@
 package = sqlx4k.mysql
 headers = sqlx4k_mysql.h
 compilerOpts = -I./src/rust/target
-staticLibraries = libsqlx4k_mysql.a
-libraryPaths.android_arm64 = ./src/rust/target/aarch64-linux-android/release
-libraryPaths.android_x64 = ./src/rust/target/x86_64-linux-android/release
+linkerOpts.android_arm64 = ./sqlx4k-mysql/src/rust/target/aarch64-linux-android/release/libsqlx4k_mysql.so
+linkerOpts.android_x64 = ./sqlx4k-mysql/src/rust/target/x86_64-linux-android/release/libsqlx4k_mysql.so

sqlx4k-postgres/src/nativeInterop/cinterop/sqlx4k-android.def

@@ -1,6 +1,5 @@
 package = sqlx4k.postgresql
 headers = sqlx4k_postgres.h
 compilerOpts = -I./src/rust/target
-staticLibraries = libsqlx4k_postgres.a
-libraryPaths.android_arm64 = ./src/rust/target/aarch64-linux-android/release
-libraryPaths.android_x64 = ./src/rust/target/x86_64-linux-android/release
+linkerOpts.android_arm64 = ./sqlx4k-postgres/src/rust/target/aarch64-linux-android/release/libsqlx4k_postgres.so
+linkerOpts.android_x64 = ./sqlx4k-postgres/src/rust/target/x86_64-linux-android/release/libsqlx4k_postgres.so

sqlx4k-sqlite/src/nativeInterop/cinterop/sqlx4k-android.def

@@ -1,6 +1,5 @@
 package = sqlx4k.sqlite
 headers = sqlx4k_sqlite.h
 compilerOpts = -I./src/rust/target
-staticLibraries = libsqlx4k_sqlite.a
-libraryPaths.android_arm64 = ./src/rust/target/aarch64-linux-android/release
-libraryPaths.android_x64 = ./src/rust/target/x86_64-linux-android/release
+linkerOpts.android_arm64 = ./sqlx4k-sqlite/src/rust/target/aarch64-linux-android/release/libsqlx4k_sqlite.so
+linkerOpts.android_x64 = ./sqlx4k-sqlite/src/rust/target/x86_64-linux-android/release/libsqlx4k_sqlite.so