I appreciate all of the replies and comments, but I think a point is being missed.
Let's say my Java app is made up of 9,500 source files (which is actually true!). Let's say I change 20 of them. 1. How could I create a dependency that basically says the 9,500 Java files in an entire source directory tree result in the 9,500 class files in the output directory tree? 2. I need to create a text file to pass a lot of parameters to a single evocation of javac. This file must contain all the updated java files and a pointer (classpath) to the already up-to-date class files. What has been suggested works fine for 20 Java files. But it is impractical for 10,000 files. Make doesn't deal with source trees well. Although I can use 'find' in a recipe, I can't for the target and dependency files. I can't say, all of the class files in one tree is dependent on all of the java files in another - while also only compiling the out-of-date files - all in one javac evocation. Perhaps I am wrong. But I think these are the problems that drove the development of ant, maven, gradle, and others. I intuit that make could be enhanced to deal with these other scenarios if the will existed. Thanks. Blake On Mon, Jan 21, 2019 at 3:24 AM Andrea Venturoli <m...@netfence.it> wrote: > On 1/21/19 3:17 AM, Blake McBride wrote: > > > 1. When building C programs one calls the compiler for each source > > file. This is impractical with Java because of the javac startup time. > > Typically javac is called once with many source files at a time - but > > not the ones that are not out of date. > > This is easy to overcome with a proper rule. > > I've used make a lot in the past for some Java project which didn't > involve complex layouts. > > > > > > 3. Java build tools have the ability to download and cache files from > > remote repositories over the net. > > This is something that make does not do (and does not try to do). > Period. > > If you are doing a complex project which involves a lot of dependencies > and you want them to be fetched and delivered, I guess make is not an > option. > > > > > Just my 2c. > > bye > av. > > _______________________________________________ > Bug-make mailing list > Bug-make@gnu.org > https://lists.gnu.org/mailman/listinfo/bug-make >
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