This patch set is to add a test for java symbol.

To allow a shell script to know the installed lib path, we need to
export the environment variable "PREFIX" in the C code.  We use the
first patch for this purpose.  The second patch introduces the java
symbol testing.

The test has been verified on x86_64 machine with mainline kernel, with
the latest commit 62e64c9d2fd1 ("perf test: Add basic core_wide
expression test").

Changes from v1:
- Added Ian's suggested tag;
- Added the search folder for the system lib libperf-jvmti.so;
- Skip the test if fail to find jvmti lib.


Leo Yan (2):
  perf subcmd: Set environment variable "PREFIX"
  perf test: Introduce script for java symbol testing

 tools/lib/subcmd/exec-cmd.c                |  3 +
 tools/perf/tests/shell/test_java_symbol.sh | 69 ++++++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100755 tools/perf/tests/shell/test_java_symbol.sh

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2.34.1