Unable to find 'protoc'

[DamienCassou]

$ git clone [email protected]:nviennot/android-checkin.git
$ cd android-checkin/
$ mvn -e install
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Android Checkin Client 1.0
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- protobuf-maven-plugin:0.4:run (default) @ android-checkin ---
[INFO] Protobuf dependency version 2.4.1
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.899 s
[INFO] Finished at: 2015-10-22T15:06:54+02:00
[INFO] Final Memory: 7M/150M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.github.igor-petruk.protobuf:protobuf-maven-plugin:0.4:run (default) on project android-checkin: Unable to find 'protoc' -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.github.igor-petruk.protobuf:protobuf-maven-plugin:0.4:run (default) on project android-checkin: Unable to find 'protoc'
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:355)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:216)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:160)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Unable to find 'protoc'
    at com.github.igor_petruk.protobuf.maven.plugin.MyMojo.execute(MyMojo.java:150)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    ... 19 more
[ERROR] 
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

[phretor]

Same here.

[matlink]

got some news using :

apt-get install maven protobuf-compiler libprotobuf-java

trying again throws :

[ERROR] Failed to execute goal com.github.igor-petruk.protobuf:protobuf-maven-plugin:0.4:run (default) on project android-checkin: Protobuf installation version does not match Protobuf library version -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.github.igor-petruk.protobuf:protobuf-maven-plugin:0.4:run (default) on project android-checkin: Protobuf installation version does not match Protobuf library version

[Attect]

change(pom.xml):

    <dependency>
      <groupId>com.google.protobuf</groupId>
      <artifactId>protobuf-java</artifactId>
      <version>2.4.1</version>
    </dependency>

to:

    <dependency>
      <groupId>com.google.protobuf</groupId>
      <artifactId>protobuf-java</artifactId>
      <version>2.6.1</version>
    </dependency>

[gowtham1984]

Changing the protobuf-java version to 2.6.1 didn't fix this error. Anyone able to fix it ?

[gowtham1984]

Looks like this is related to the protobuf-java version & protobuf-compiler installed version on the machine. Both needs to match. Please run maven with -X you would see something like
[INFO] Protobuf dependency version 2.4.1
[INFO] 'protoc' executable version 2.3.0
Both major versions should match. Make the changes appropriately and that takes care of it.