Hi,
I am building OpenJDK 8 for a tight environment and would like to have a very
small JDK (or I should say JRE) footprint....sort of like headless but even
more.
I would like to do this from the configure(1) as much as possible. And then
resort to rm(1).
Here is build result on amd64 Debian 7.3 without any trimming
mmontaseri@griffin:~/work/bug-91383/openjdk8> du -sh *
168K bin # these are all symlinks to jvm/bin
269M jvm
too much...I need to get down to under 30 Meg. So I build again with
configure --disable-headful --disable-debug-symbols --disable-zip-debug-info
and I get the following result
mmontaseri@griffin:~/work/bug-91383/depot2> du -sh *
168K bin
168M jvm # went down from 296M to 168M
That is good, but not good enough....I then looked around and found about 66
Meg of *.diz files. We don't need these.
Q1- is there any configure option to not produce *.diz files (gdb debug info
for .so files). If not, then I have to rm(1) them.
Q2- I see two lib directories under jvm/openjdk-1.8.0-internal
mmontaseri@griffin:~/work/bug-91383/depot2/jvm/openjdk-1.8.0-internal> du -sh
jre/*
4.0K jre/ASSEMBLY_EXCEPTION
272K jre/bin
97M jre/lib
20K jre/LICENSE
180K jre/THIRD_PARTY_README
mmontaseri@griffin:~/work/bug-91383/depot2/jvm/openjdk-1.8.0-internal> du -sh
lib
38M lib
Can you help me understand the difference between lib/* and jre/lib
I see debian has created a set of packages on OpenJDK 7, like so
ii openjdk-7-jdk:amd64 7u25-2.3.10-1~deb7u1
amd64 OpenJDK Development Kit (JDK)
ii openjdk-7-jre:amd64 7u25-2.3.10-1~deb7u1
amd64 OpenJDK Java runtime, using Hotspot JIT
ii openjdk-7-jre-headless:amd64 7u25-2.3.10-1~deb7u1
amd64 OpenJDK Java runtime, using Hotspot JIT (headless)
ii openjdk-7-jre-lib 7u25-2.3.10-1~deb7u1
all OpenJDK Java runtime (architecture
independent libraries)
thanks
Medi
