I am on a mac using the java version that works for that environment e.g. 1.6.0

 

You can see the full log of the terminal here:

https://gist.github.com/lslinnet/3243d53ad082c94d7bbe

 

Additional information:

➜  forge-1.7.2-10.12.0.1024-src  java -version

java version "1.6.0_65"

Java SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)

Java HotSpot 64-Bit Server VM (build 20.65-b04-462, mixed mode)

➜  forge-1.7.2-10.12.0.1024-src  gradle -v

 

------------------------------------------------------------

Gradle 1.10

------------------------------------------------------------

 

Build time:  2013-12-17 09:28:15 UTC

Build number: none

Revision:    36ced393628875ff15575fa03d16c1349ffe8bb6

 

Groovy:      1.8.6

Ant:          Apache Ant version 1.9.2 compiled on July 8 2013

Ivy:          2.2.0

JVM:          1.6.0_65 (Apple Inc. 20.65-b04-462)

OS:          Mac OS X 10.8.5 x86_64

 

 

If you need any additional information please let me know.

 

what commands did you use in terminal?

used "gradle setupDevWorkspace --info --stacktrace"

 

Just tested with the latest #1025 build of forge, getting the same error.

Open gradlew on TextEdit and set the heap space to at least 2Gb

 

Around line 11 you'll see this:

DEFAULT_JVM_OPTS=""

 

write this:

DEFAULT_JVM_OPTS="-Xmx2048m"

 

Save, close it and try running it again.