Use discovered java path for compiler and jni include files

Instead of using the discovered java bits just for jni.h, also use
javac from that directory. Add JAVA_VERSION param to set language
version for newer compilers.

Signed-off-by: Keith Packard <keithp@keithp.com>

9 files changed, 34 insertions, 21 deletions

diff --git a/altoslib/Makefile.am b/altoslib/Makefile.am
index 82ad2eab..d16a79d5 100644
--- a/altoslib/Makefile.am
+++ b/altoslib/Makefile.am
@@ -1,4 +1,4 @@
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 JAVAROOT=bin
 
diff --git a/altosui/Makefile.am b/altosui/Makefile.am
index b5fdf0f0..1413de58 100644
--- a/altosui/Makefile.am
+++ b/altosui/Makefile.am
@@ -1,6 +1,6 @@
 
 JAVAROOT=classes
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 man_MANS=altosui.1
 
diff --git a/altosuilib/Makefile.am b/altosuilib/Makefile.am
index 3b2e49d4..10a5b494 100644
--- a/altosuilib/Makefile.am
+++ b/altosuilib/Makefile.am
@@ -1,4 +1,4 @@
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 JAVAROOT=bin
 
diff --git a/configure.ac b/configure.ac
index 0e4b204c..cc6a23d4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -64,27 +64,41 @@ AC_ARG_WITH(jcommon, AS_HELP_STRING([--with-jcommon=PATH],
 
 AC_SUBST(JCOMMON)
 
-AC_ARG_WITH(jvm, AS_HELP_STRING([--with-jvm-include=PATH],
-	[Set jvm include path for jni builds (default searches in /usr/lib/jvm)]),
-	[JVM_INCLUDE=$withval], [JVM_INCLUDE=auto])
-
-if test "x$JVM_INCLUDE" = "xauto"; then
-	AC_MSG_CHECKING([JVM include files])
-	for jvm in default-java java-6-openjdk java-6-sun; do
-		if test "x$JVM_INCLUDE" = "xauto"; then
+AC_ARG_WITH(jvm, AS_HELP_STRING([--with-jvm=PATH],
+	[Set jvm path for java builds (default searches in /usr/lib/jvm)]),
+	[JVM=$withval], [JVM=auto])
+
+if test "x$JVM" = "xauto"; then
+	AC_MSG_CHECKING([JVM])
+	for jvm in default-java java-6-openjdk java-7-openjdk java-8-openjdk java-9-openjdk java-10-openjdk java-11-openjdk java-12-openjdk java-13-openjdk java-6-sun; do
+		if test "x$JVM" = "xauto"; then
 			INCLUDE="/usr/lib/jvm/$jvm/include"
 			if test -f "$INCLUDE"/jni.h; then
-				JVM_INCLUDE="$INCLUDE"
+				JVM=/usr/lib/jvm/"$jvm"
 			fi
 		fi
 	done
-	if test "x$JVM_INCLUDE" = "xauto"; then
-		AC_MSG_ERROR([no JVM include files found])
+	if test "x$JVM" = "xauto"; then
+		AC_MSG_ERROR([no JVM files found])
 	fi
-	AC_MSG_RESULT([$JVM_INCLUDE])
+	AC_MSG_RESULT([$JVM])
 fi
 
+AC_ARG_WITH(java-version, AS_HELP_STRING([--with-java-version=7],
+					 [Set java language compatibility version (default is 7)]),
+	   [JAVA_VERSION=$withval], [JAVA_VERSION=7])
+
+JAVAC="$JVM"/bin/javac
+JAVA="$JVM"/bin/java
+JVM_INCLUDE="$JVM"/include
+JAVAC_VERSION_FLAGS="-target 1.$JAVA_VERSION -source 1.$JAVA_VERSION"
+
+AC_SUBST(JAVAC)
+AC_SUBST(JAVA)
+AC_SUBST(JVM)
 AC_SUBST(JVM_INCLUDE)
+AC_SUBST(JAVAC_VERSION_FLAGS)
+
 
 AC_ARG_WITH(android, AS_HELP_STRING([--with-android=PATH],
 	[Set android SDK path (default searches in a variety of places)]),
diff --git a/libaltos/Makefile.am b/libaltos/Makefile.am
index 69fe7a57..eb5eb677 100644
--- a/libaltos/Makefile.am
+++ b/libaltos/Makefile.am
@@ -1,6 +1,5 @@
-JAVAC=javac
 AM_CFLAGS=-DLINUX -DPOSIX_TTY -I$(JVM_INCLUDE) -I$(JVM_INCLUDE)/linux
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 altoslibdir=$(libdir)/altos
 
diff --git a/map-server/altos-mapd/Makefile.am b/map-server/altos-mapd/Makefile.am
index 315a33d5..bb20dd84 100644
--- a/map-server/altos-mapd/Makefile.am
+++ b/map-server/altos-mapd/Makefile.am
@@ -1,5 +1,5 @@
 JAVAROOT=classes
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 altoslibdir=$(libdir)/altos
 
diff --git a/map-server/altos-mapj/Makefile.am b/map-server/altos-mapj/Makefile.am
index 98d4f170..a8dfffec 100644
--- a/map-server/altos-mapj/Makefile.am
+++ b/map-server/altos-mapj/Makefile.am
@@ -1,5 +1,5 @@
 JAVAROOT=classes
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 altoslibdir=$(libdir)/altos
 
diff --git a/micropeak/Makefile.am b/micropeak/Makefile.am
index 7e9b490d..23ec077e 100644
--- a/micropeak/Makefile.am
+++ b/micropeak/Makefile.am
@@ -1,5 +1,5 @@
 JAVAROOT=classes
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 man_MANS=micropeak.1
 
diff --git a/telegps/Makefile.am b/telegps/Makefile.am
index ae1e83e9..0e75abf1 100644
--- a/telegps/Makefile.am
+++ b/telegps/Makefile.am
@@ -1,5 +1,5 @@
 JAVAROOT=classes
-AM_JAVACFLAGS=-target 1.6 -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked -source 6
+AM_JAVACFLAGS=$(JAVAC_VERSION_FLAGS) -encoding UTF-8 -Xlint:deprecation -Xlint:unchecked
 
 man_MANS=telegps.1