[build] extract versions to gradle.properties

Interop/StubGenerator/build.gradle

@@ -37,7 +37,7 @@ dependencies {
     api "org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion"
     api "org.jetbrains.kotlin:kotlin-compiler:$kotlinVersion"
     api "org.jetbrains.kotlin:kotlin-native-shared:$konanVersion"
-    api "org.jetbrains.kotlinx:kotlinx-metadata-klib:0.0.1-dev-10"
+    api "org.jetbrains.kotlinx:kotlinx-metadata-klib:$metadataVersion"
 
     testImplementation "junit:junit:4.12"
     testImplementation "org.jetbrains.kotlin:kotlin-test-junit:$buildKotlinVersion"

build-tools/build.gradle.kts

@@ -30,6 +30,10 @@ val kotlinCompilerRepo: String by rootProperties
 val buildKotlinVersion: String by rootProperties
 val buildKotlinCompilerRepo: String by rootProperties
 val konanVersion: String by rootProperties
+val slackApiVersion: String by rootProperties
+val ktorVersion: String by rootProperties
+val shadowVersion: String by rootProperties
+val metadataVersion: String by rootProperties
 
 group = "org.jetbrains.kotlin"
 version = konanVersion
@@ -50,19 +54,19 @@ dependencies {
     implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
     implementation("org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion")
     implementation("org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion")
-    implementation("com.ullink.slack:simpleslackapi:1.2.0")
+    implementation("com.ullink.slack:simpleslackapi:$slackApiVersion")
 
-    implementation("io.ktor:ktor-client-auth:1.2.1")
-    implementation("io.ktor:ktor-client-core:1.2.1")
-    implementation("io.ktor:ktor-client-cio:1.2.1")
+    implementation("io.ktor:ktor-client-auth:$ktorVersion")
+    implementation("io.ktor:ktor-client-core:$ktorVersion")
+    implementation("io.ktor:ktor-client-cio:$ktorVersion")
 
     api("org.jetbrains.kotlin:kotlin-native-utils:$kotlinVersion")
 
     // Located in <repo root>/shared and always provided by the composite build.
     api("org.jetbrains.kotlin:kotlin-native-shared:$konanVersion")
-    implementation("com.github.jengelman.gradle.plugins:shadow:5.1.0")
+    implementation("com.github.jengelman.gradle.plugins:shadow:$shadowVersion")
 
-    implementation("org.jetbrains.kotlinx:kotlinx-metadata-klib:0.0.1-dev-10")
+    implementation("org.jetbrains.kotlinx:kotlinx-metadata-klib:$metadataVersion")
 }
 
 sourceSets["main"].withConvention(KotlinSourceSet::class) {

gradle.properties

@@ -37,6 +37,10 @@ gtestRevision=07f4869221012b16b7f9ee685d94856e1fc9f361
 
 org.gradle.jvmargs='-Dfile.encoding=UTF-8'
 org.gradle.workers.max=4
+slackApiVersion=1.2.0
+ktorVersion=1.2.1
+shadowVersion=5.1.0
+metadataVersion=0.0.1-dev-10
 
 # Uncomment to enable composite build
 #kotlinProjectPath=<insert the path to Kotlin project root here>