Building the serviceability agent on Linux doesn't offer the reminder we have on Solaris: that JAVA_HOME must be set.

The failure looks like:

[kevin@oldbox make]$ make natives
cd ../src/os/`java -classpath ../build/classes
sun.jvm.hotspot.utilities.PlatformInfo`; make all
make[1]: Entering directory
`/home/kevin/work/7003487.sa/hotspot/agent/src/os/linux'
cc -c -fPIC -g -D_GNU_SOURCE -Damd64 -I/include -I/include/linux -c
-o ps_core.o ps_core.c
ps_core.c:25:17: error: jni.h: No such file or directory
ps_core.c:241: error: expected declaration specifiers or '...' before
'jboolean'
ps_core.c: In function 'read_jboolean':
ps_core.c:242: error: 'jboolean' undeclared (first use in this function)
ps_core.c:242: error: (Each undeclared identifier is reported only once
ps_core.c:242: error: for each function it appears in.)
ps_core.c:242: error: expected ';' before 'i'
ps_core.c:243: error: 'i' undeclared (first use in this function)
ps_core.c:244: error: 'pvalue' undeclared (first use in this function)
ps_core.c: In function 'init_classsharing_workaround':
ps_core.c:298: error: 'jboolean' undeclared (first use in this function)
ps_core.c:298: error: expected ';' before 'useSharedSpaces'
ps_core.c:312: error: 'useSharedSpaces' undeclared (first use in this
function)
ps_core.c:312: error: too many arguments to function 'read_jboolean'
make[1]: *** [ps_core.o] Error 1
make[1]: Leaving directory
`/home/kevin/work/7003487.sa/hotspot/agent/src/os/linux'
make: *** [natives] Error 2