ccache OpenJ9+JDK11 failures when building OpenSSL

[sxa]

Happening on Linux when openssl is being built from source. Didn't seem to be failing for me outside jenkins with the same build options, so not sure why this is happening. Have put a temporary fix in as #802 to just disable ccache on those builds for now (Also been testing with https://ci.adoptopenjdk.net/view/work%20in%20progress/job/SXA-jdk11j9-ssltest)

Compiling 394 files for BUILD_jdk.compiler.interim

ar: creating apps/libapps.a
ar: creating libssl.a
ar: creating test/libtestutil.a

ar: creating libcrypto.a
/bin/sh: CCACHE_COMPRESS=1: command not found
gmake[5]: *** [test/asn1_internal_test] Error 127
gmake[5]: *** Waiting for unfinished jobs....
gmake[4]: *** [all] Error 2
gmake[3]: *** [build_openssl] Error 1
gmake[2]: *** [openssl-build] Error 2
gmake[2]: *** Waiting for unfinished jobs....

Compiling 299 files for BUILD_jdk.javadoc.interim

ERROR: Build failed for targets 'images test-image' in configuration 'linux-x86_64-normal-server-release' (exit code 2) 

[M-Davies]

@sxa Looking at the build scripts, we are still disabling ccache in most of our jobs, with the exact documentation on why shown in the files. Is this good to close or to be edited as a request for documentation?

[sxa]

As far as I know we don't build openssl on any linux platforms during the build. I would personally like to get ccache working as universally as possible.

[andrew-m-leonard]

This seems to be re-occuring now: https://ci.adoptopenjdk.net/job/build-scripts/job/jobs/job/jdk11u/job/jdk11u-linux-x64-openj9/1002/console