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package ch.jodersky.sbt.jni
package plugins
import build._
import ch.jodersky.jni.{NativeLoader, Platform}
import sbt._
import sbt.Keys._
/** Wraps a native build system in sbt tasks. */
object JniNative extends AutoPlugin {
object autoImport {
//Main task, inspect this first
val nativeCompile = taskKey[File]("Builds a native library (by calling the native build tool).")
val nativePlatform = settingKey[Platform]("Platform of the system this build is running on.")
val nativeBuildTools = taskKey[Seq[BuildTool]](
"A collection of build tools that are tested to determine the current build environment"
)
val nativeBuildTool = taskKey[BuildTool](
"The build tool to be used when building a native library."
)
}
import autoImport._
lazy val settings: Seq[Setting[_]] = Seq(
nativePlatform := Platform.current.getOrElse {
sLog.value.warn("Warning: cannot determine platform! It will be set to 'unknown'.")
Platform.Unknown
},
sourceDirectory in nativeCompile := sourceDirectory.value / "native",
target in nativeCompile := target.value / "native" / (nativePlatform).value.id,
nativeBuildTools := Seq(CMake, Autotools),
nativeBuildTool := {
val tools = nativeBuildTools.value
val src = (sourceDirectory in nativeCompile).value
val tool = if (src.exists && src.isDirectory) {
tools.find(t => t detect src)
} else {
None
}
tool.getOrElse(
sys.error("No supported native build tool detected. " +
s"Check that the setting 'sourceDirectory in nativeCompile' (currently $src) " +
"points to a valid directory. Supported build tools are: " +
tools.map(_.name).mkString(","))
)
},
clean in nativeCompile := {
val log = streams.value.log
log.debug("Cleaning native build")
try {
val tool = nativeBuildTool.value
tool.api.clean(
(sourceDirectory in nativeCompile).value,
log
)
} catch {
case ex: Exception =>
log.debug(s"Native cleaning failed: $ex")
}
},
nativeCompile := {
val tool = nativeBuildTool.value
val src = (sourceDirectory in nativeCompile).value
val buildDir = (target in nativeCompile).value / "build"
val targetDir = (target in nativeCompile).value / "lib"
val log = streams.value.log
IO.createDirectory(buildDir)
IO.createDirectory(targetDir)
tool.api.library(src, buildDir, targetDir, log)
},
// change clean task to also clean native sources
clean := {
(clean in nativeCompile).value
clean.value
}
)
override lazy val projectSettings = inConfig(Compile)(settings)
}
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