Building Eclipse from source.

Чего-то не собирается у меня eclipse. Скачал eclipse-sourceBuild-srcIncluded-3.0.1.zip,
делаю как сказано ./build -os linux -ws gtk -arch x86, выдаёт:

.....................
BUILD FAILED
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/build.xml:29: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/build.xml:20: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.sdk/build.xm
l:35: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.sdk/build.xm
l:17: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.platform/bui
ld.xml:404: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.platform/bui
ld.xml:45: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/plugins/org.eclipse.swt.gtk64/bui
ld.xml:152: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/plugins/org.eclipse.swt.gtk64/bui
ld.xml:126: srcdir "/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/plugins/org.eclipse.swt.gtk
64/src/Eclipse SWT Mozilla/gtk" does not exist!

Создал пустую директорию "plugins/org.eclipse.swt.gtk64/src/Eclipse SWT Mozilla/gtk",
выдаёт уже:

.................................
BUILD FAILED
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/build.xml:29: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/build.xml:20: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.sdk/build.xm
l:35: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.sdk/build.xm
l:17: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.platform/bui
ld.xml:404: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/features/org.eclipse.platform/bui
ld.xml:45: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/plugins/org.eclipse.swt.gtk64/bui
ld.xml:150: The following error occurred while executing this line:
/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/plugins/org.eclipse.swt.gtk64/bui
ld.xml:101: srcdir "/usr/src/eclipse-sourceBuild-srcIncluded-3.0.1/plugins/org.eclipse.swt.gtk
64/src/Eclipse SWT PI/gtk" does not exist!

Попробовал указывать вместо "-ws gtk" "-ws motif" - выдает в точности то же самое.