CMake: Update to use boot jdk tools properly

Set appropriate variables from the boot jdk.
Stop using FindJava module

Signed-off-by: Devin Nakamura <[email protected]>

Author: dnakamura

CMakeLists.txt

@@ -35,7 +35,10 @@ find_program(CMAKE_Java_COMPILER NAMES javac PATHS ${BOOT_JDK}/bin NO_DEFAULT_PA
 find_program(CMAKE_Java_RUNTIME  NAMES java  PATHS ${BOOT_JDK}/bin NO_DEFAULT_PATH)
 find_program(CMAKE_Java_AR       NAMES jar   PATHS ${BOOT_JDK}/bin NO_DEFAULT_PATH)
 
+# Variables used by the "UseJava" module (predates "Java" language support)
 set(Java_JAVA_EXECUTABLE ${CMAKE_Java_RUNTIME})
+set(Java_JAVAC_EXECUTABLE ${CMAKE_Java_COMPILER})
+set(Java_JAR_EXECUTABLE ${CMAKE_Java_AR})
 
 # Note: this is a temporary transition variable.
 set(J9VM_IS_NON_STAGING TRUE)

sourcetools/CMakeLists.txt

@@ -23,7 +23,6 @@
 # set JAVA_HOME to guide FindJava
 set(JAVA_HOME ${BOOT_JDK})
 
-include(FindJava)
 include(UseJava)
 
 project(j9_sourcetools VERSION 1.0)