Create an new fregec.jar for target 1.8 using a current JDK 9 javac.
If you use this new fregec.jar to compile your frege code with a JDK 1.8
Then you get the error:
java -Xss1m -jar fregec.jar -d classes src\hello.fr
Error: A JNI error has occurred, please check your installation and try
again
Exception in thread "main" java.lang.UnsupportedClassVersionError:
frege/run8/Lazy has been compiled by a more recent version of the Java
Runtime (class file version 53.0), this version of the Java Runtime only
recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
To fix this problem change the makefile by adding -source 1.8 -target 1.8
in below line:
[ "$(TARGET)" = "1.7" ] || $(JAVAC) -d build -source 1.8 -target 1.8
frege/run8/*.java
Can this be fixed in the github master branch?
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