On 1 October 2013 16:36, Christopher BROWN <[email protected]> wrote: > Thanks for the link Oleg. Having followed it, and not being an avid Maven > user, I assume that I need to add something like this: > > <properties> > <maven.compiler.source>1.5</maven.compiler.source> > <maven.compiler.target>1.6</maven.compiler.target> > </properties> > > => (changing "maven.compiler.target" to "1.6"), just before the closing > </project> tag in the "pom.xml" file at the top of the "src" package. > Which should in turn cascade (effectively, not physically by copying) into > the POMs in the subfolders, such as "httpcore", "httpcore-nio", I expect. > Is this correct?
That is the correct way to define properties. You can also define them on the command line: mvn -Dmaven.compiler.target=1.6 package Note that those properties only affect the -source and -target options that are passed to the compiler. > Sorry for the "theoretical" answer, I will try it when I can (I can't right > now), was just wondering if I was on the right track... > > -- > Christopher > > > > > On 1 October 2013 16:41, Oleg Kalnichevski <[email protected]> wrote: > >> On Tue, 2013-10-01 at 06:48 +0200, Christopher BROWN wrote: >> > Hi, >> > >> > More of an Ant user, I tried configuring the POM file after downloading >> > http "core" (haven't tried "client" yet) to compile to Java 1.6, for a >> more >> > recent classfile format (it's slightly more efficient). >> > >> > I tried to follow advice here: >> > >> http://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-source-and-target.html >> > >> > ...but couldn't see any references to maven-compiler-plugin in any of the >> > pom.xml files (including those in subdirectories). >> > >> > There seems to be some magic going on, as I tried compiling anyway, and >> > after inspecting the generated classes in the generated jars ("mvn >> install" >> > was successful), it appears that the output classfile version is 49 (as >> in >> > Java 5)... I checked as follows: >> > javap -v org.apache.http.util.VersionInfo >> > >> > I said "magic", because I'm using Mac OS X 10.8 from 2012 with only Java >> 6, >> > 7, and 8 installed... >> > >> > I'm curious to know how Java 5 is specified and used for compilation, and >> > would like to compile with the most recent "javac" version possible. >> > >> > Thanks, >> > Christopher >> >> The usual delights of dealing with complex build systems. I think the >> default compiler target and source levels are defined in the parent POM: >> >> >> http://search.maven.org/remotecontent?filepath=org/apache/httpcomponents/project/7/project-7.pom >> >> One should be able to override them at individual POM level, though. >> >> Oleg >> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> >> --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
