X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=doc%2Fexamples%2Fjava-log4j%2FMakefile;h=2c629c37efe0fb23f03cf7d0966942319c8c7676;hb=4c7e1bd598f4fc045a246ed81f1510238f6112a1;hp=4b5996422c6f3768f184033fecf8f1f04997ea8c;hpb=be347eb9b64f54c37940f272ba70c74a2f8330a5;p=lttng-ust.git

diff --git a/doc/examples/java-log4j/Makefile b/doc/examples/java-log4j/Makefile
index 4b599642..2c629c37 100644
--- a/doc/examples/java-log4j/Makefile
+++ b/doc/examples/java-log4j/Makefile
@@ -20,7 +20,11 @@ JFLAGS = -g
 
 # Default JUL jar name.
 JARFILE=liblttng-ust-agent.jar
-LOG4J=/usr/share/java/log4j.jar
+
+# If system classpath is empty, try to guess log4j location
+ifeq "$(CLASSPATH)" ""
+	CLASSPATH="/usr/local/share/java/log4j.jar:/usr/share/java/log4j.jar"
+endif
 
 # Check if the top level makefile overrides the JUL Jar file name.
 ifneq "$(JAVA_JARFILE_OVERRIDE)" ""
@@ -29,9 +33,9 @@ endif
 
 # Check if the top level makefile overrides the JUL classpath.
 ifeq "$(JAVA_CLASSPATH_OVERRIDE)" ""
-	CLASSPATH=/usr/local/share/java/$(JARFILE):/usr/share/java/$(JARFILE):$(LOG4J)
+	CLASSPATH:=/usr/local/share/java/$(JARFILE):/usr/share/java/$(JARFILE):$(CLASSPATH)
 else
-	CLASSPATH=$(JAVA_CLASSPATH_OVERRIDE)/$(JARFILE):$(LOG4J)
+	CLASSPATH:=$(JAVA_CLASSPATH_OVERRIDE)/$(JARFILE):$(CLASSPATH)
 endif
 
 JC = javac -classpath "$(CLASSPATH):."