Many HotSpot developers make only the `hotspot` target, and copy the resulting `libjvm.so` into an already-build JDK image.
HotSpot requires `interim-langtools` only when Graal is enabled. When Graal is disabled, we can avoid building `interim-langtools`. This improves the build time of `make hotspot` by about 20 seconds, or about 15%: Old: $ make clean $ time make hotspot .... real 1m57.905s user 42m22.524s sys 3m7.372s New: $ make clean $ time make hotspot .... real 1m39.916s user 41m59.984s sys 3m3.188s ------------- Commit messages: - 8264874: Build interim-langtools for HotSpot only if Graal is enabled Changes: https://git.openjdk.java.net/jdk/pull/3389/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3389&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8264874 Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/3389.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/3389/head:pull/3389 PR: https://git.openjdk.java.net/jdk/pull/3389
