It may be just that I have a general misunderstanding how gradle build works, but it feels to me that I can not build a maven file inside of a gradle build. Since gradle uses the gradle.build file, and maven uses a pom.xml, it does not seem as though I can do this. I have multiple maven projects that I would like to wrap up with a gradle wrapper. I can not find ANYTHING on whether this is even possible.
Both Maven and Gradle are build tools and you should only use one of them for a given project.
If you have existing Maven projects and like the functionality provided by the Gradle wrapper, there is a similar wrapper for Maven (note that this is currently a third-party plugin but they plan to include it in the upcoming release 3.7 of Maven).
Alternatively you could convert your projects entirely to Gradle.
I'm new to Gradle. I see that Gradle lib already has a file 'groovy-all-2.4.12.jar' in lib folder and I don't seem to have any issues with tasks and or dependencies. Still, is it necessary in any scenario to install Groovy on my system on top of it?
Reason why I ask is that, when I do 'gradle -v' in command prompt, I see few warnings. Please see attached screenshot.
With gradle it is strongly recommended to use the Gradle wrapper committed into the project you are building instead of a system-wide gradle distribution (that is gradlew and not gralde). This guarantees the matching version of Gradle your project has been tested with.
With the Gradle wrapper you do not need to care about any dependencies that Grade itself needs, such as groovy and you really do not need to install anything of Gradle at all as the wrapper in your project will download all it needs on the first run.
The minimum setup for the Gradle wrapper is:
/gradlew - unix shell script
/gradlew.bat - windows batch script
/gradle/wrapper/gradle-wrapper.properties -- the properties file defining the version
/gradle/wrapper/gradle-wrapper.jar -- the minimal jar (50Kb) that takes care about the rest
The above files must be committed into your project and this is what 99% of all gradle projects do. You will find further details here https://docs.gradle.org/current/userguide/gradle_wrapper.html
I'm using windows, and I am having trouble understanding how to compile this source. https://github.com/Maxcloud/Mushy
Please if you can help that would be great :)
I think the Readme expects you to be using ubuntu or a linux.
You can use File | New | Project from Existing Sources to import a maven project in IntelliJ. See also the documentation.
If you are using intelliJ you can use the maven tab located to the right of your IDE and within that you will have access to all the maven commands, specifically install for building your dependencies.
**NOTE*
You will need a valid POM and you will have to tell IntelliJ about it if it doesn't know.
Is it possible to use Gradle to produce a tree of what depends on what?
I have a project and would like to find out all the dependencies so I may be able to prune it a little with forward declarations etc.
Without modules:
gradle dependencies
For Android:
gradle app:dependencies
Using gradle wrapper:
./gradlew app:dependencies
Note: Replace app with the project module name.
Additionally, if you want to check if something is compile vs. testCompile vs androidTestCompile dependency as well as what is pulling it in:
./gradlew :app:dependencyInsight --configuration compile --dependency <name>
./gradlew :app:dependencyInsight --configuration testCompile --dependency <name>
./gradlew :app:dependencyInsight --configuration androidTestCompile --dependency <name>
You can render the dependency tree with the command gradle dependencies. For more information check the section Listing dependencies in a project in the online user guide.
If you find it hard to navigate console output of gradle dependencies, you can add the Project reports plugin:
apply plugin: 'project-report'
And generate a HTML report using:
$ ./gradlew htmlDependencyReport
Report can normally be found in build/reports/project/dependencies/index.html
It looks like this:
In Android Studio (at least since v2.3.3) you can run the command directly from the UI:
Click on the Gradle tab and then double click on :yourmodule -> Tasks -> android -> androidDependencies
The tree will be displayed in the Gradle Console tab
Often the complete testImplementation, implementation, and androidTestImplementation dependency graph is too much to examine together. If you merely want the implementation dependency graph you can use:
./gradlew app:dependencies --configuration implementation
Source: Listing dependencies in a project
Note: compile has been deprecated in more recent versions of Gradle and in more recent versions you are advised to shift all of your compile dependencies to implementation. Please see this answer here
If you want to visualize your dependencies in a graph you can use gradle-dependency-graph-generator plugin.
Generally the output of this plugin can be found in build/reports/dependency-graph directory and it contains three files (.dot|.png|.svg) if you are using the 0.5.0 version of the plugin.
Example of dependences graph in a real app (Chess Clock):
For me, it was simply one command
in build.gradle add plugin
apply plugin: 'project-report'
and then go to cmd and run following command
./gradlew htmlDependencyReport
This gives me an HTML report WOW Html report 💕
Or if you want the report in a text file, to make search easy use following command
gradlew dependencyReport
That's all my lord.
Things have moved forward in Gradle so I believe this question merits another answer.
Since Gradle 4.3, "build scans" were introduced. All relevant info is available in the Gradle docs (1, 2). For me, this seems to now be the easiest way to check your dependencies (and generally your build) in a clear, organized way.
They are very easy to create, just execute:
gradle build --scan
(or ./gradlew build --scan if you use a wrapper)
This produces a randomly generated link where you can see your scan. When opening that link, you enter your email and gain full control of the link: eg. share it or delete it. It has got a lot of info about your build, not just dependencies. You can see your dependencies, their hierarchies, the repository used to obtain them but also a lot of other stuff about your build, namely, its performance (which is of interest in big complex builds), your tests, even your console output and your system configuration, which JDK and JVM was used, max heap size etc.
This is a printscreen from a mock project:
A build scan is a shareable record of a build that provides insights into what happened and why. You can create a build scan at scans.gradle.com for free.
Note however, that info for your build process will be sent to the Gradle servers. You have full control to delete it when you are finished with your inspection.
Finally, you can use build scans with Gradle versions earlier than 4.3 too, you just have to manually add the scans plugin in your buildscript.
Edit:
Incorporating some feedback from the comments some extra notes:
1) It is very difficult to do this by mistake or without understanding that some info for your build will be online (private to you, with the ability to delete it, but still online).
When executing gradle build --scan the following message appears:
Publishing a build scan to scans.gradle.com requires accepting the Gradle
Terms of Service defined at https://gradle.com/terms-of-service. Do you
accept these terms? [yes, no]
You have to explicitly write yes and then the message continues:
Publishing build scan...
https://gradle.com/s/a12en0dasdu
2) In Gradle Enterprise you can host gradle build scans in your own servers. However I have no experience in this and my proposed approach was about the standard Gradle distribution, using Gradle's servers for your build scans.
3) Gradle itself promotes the build scans as the way to deal with most your build problems.
For Android, type this in terminal
gradlew app:dependencies
It will list all the dependencies and the ones with newer versions for you to upgrade like
com.android.support:customtabs:26.1.0 -> 27.1.1 (*)
For recent versions of Gradle (I tested with the 6.4.1 version):
gradle dependencies --configuration compileClasspath
or if you're using the Gradle Wrapper:
gradlew dependencies --configuration compileClasspath
When building for Android with the 'debug' and 'release' compilation profiles, the debugCompileClasspath and releaseCompileClasspath configurations can be used instead of compileClasspath.
I also found useful to run this:
./gradlew dI --dependency <your library>
This shows how are being dependencies resolved (dependencyInsight) and help you debugging into where do you need to force or exclude libraries in your build.gradle
See: https://docs.gradle.org/current/userguide/tutorial_gradle_command_line.html
In Android Studio
1) Open terminal and ensure you are at project's root folder.
2) Run ./gradlew app:dependencies (if not using gradle wrapper, try gradle app:dependencies)
Note that running ./gradle dependencies will only give you dependency tree of project's root folder, so mentioning app in above manner, i.e. ./gradlew app:dependencies is important.
Note that you may need to do something like ./gradlew <module_directory>:<module_name>:dependencies if the module has extra directory before reach its build.gradle. When in doubt, do ./gradlew tasks --all to check the name.
If you want all the dependencies in a single file at the end within two steps.
Add this to your build.gradle.kts in the root of your project:
project.rootProject.allprojects {
apply(plugin="project-report")
this.task("allDependencies", DependencyReportTask::class) {
evaluationDependsOnChildren()
this.setRenderer(AsciiDependencyReportRenderer())
}
}
Then apply:
./gradlew allDependencies | grep '\-\-\-' | grep -Po '\w+.*$' | awk -F ' ' '{ print $1 }' | sort | grep -v '\{' | grep -v '\[' | uniq | grep '.\+:.\+:.\+'
This will give you all the dependencies in your project and sub-projects along with all the 3rd party dependencies.
If you want to get this done in a programmatic way, then you'll need a custom renderer of the dependencies - you can start by extending the AsciiDependencyReportRenderer that prints an ascii graph of the dependencies by default.
double click and run dependency under help in gradle view
Try either this
./gradlew dependencies > ~/dependencies.txt
or
gradle dependencies > ~/dependencies.txt`
which should write the dependencies in text file under user's home directory.
I had created a groovy project. It worked by itself.
After some additions I had to add a new jar of a new library into the imports.
While the whole workspace runs on Gradle, I added the appropriate Maven reference to the gradle.build file.
After running gradle cleanEclipse Eclipse the new library works OK.
But. All project references to the Groovy libraries disappeared. Foolish me, I had to put some references to them into the gradle.build, too.
The list of libraries:
groovy.util.slurpersupport
groovy.xml
org.codehaus.groovy.tools.xml
groovy.lang
But I don't know how to include them into gradle.build. I can't found them in maven repository. And even so, I have them installed in my Eclipse, and I should take these. And I can't google any help, because gradle groovy gives the results on how to call gradle from groovy, not vice versa.
Moving from plain Groovy to Gradle won't help, it is really about gradle support for calling a java library from groovy.
I have nothing against getting dependencies from Maven rep., but I don't know how to do it in my case - The problem is, that I have Eclipse 3.6. And I should use the last version of groovy for Eclipse 3.6. So, I have installed it from http://dist.codehaus.org/groovy/distributions/greclipse/snapshot/e3.6/. And I don't know what is the equivalent version in Maven - there is no info about it.
There was some error in the groovy in Eclipse installation. Now after running gradle cleanEclipse Eclipse while build.gradle has NO dependencies to groovy, almost everything runs OK, I only have to add the groovy nature to the project