Some changes added to compile and run with Java 6 and Java 7.

  - correction of errors with Javac 6:
    - target 1.5 and source empty.
  - correction of errors with Javadoc 7:
    - strange behavior when duplicate classes are given.

Change-Id: Ib814ede143f7799ef18e0fb1b733547519b8b0e5

core/combo/javac.mk

@@ -10,9 +10,9 @@
 # Whatever compiler is on this system.
 ifeq ($(BUILD_OS), windows)
     COMMON_JAVAC := development/host/windows/prebuilt/javawrap.exe -J-Xmx256m \
-        -target 1.5 -Xmaxerrs 9999999
+        -target 1.5 -source 1.5 -Xmaxerrs 9999999
 else
-    COMMON_JAVAC := javac -J-Xmx512M -target 1.5 -Xmaxerrs 9999999
+    COMMON_JAVAC := javac -J-Xmx512M -target 1.5 -source 1.5 -Xmaxerrs 9999999
 endif
 
 # Eclipse.
@@ -26,7 +26,7 @@ endif
 ifeq ($(CUSTOM_JAVA_COMPILER), openjdk)
     # We set the VM options (like -Xmx) in the javac script.
     COMMON_JAVAC := prebuilt/common/openjdk/bin/javac -target 1.5 \
-        -Xmaxerrs 9999999
+        -source 1.5 -Xmaxerrs 9999999
     $(info CUSTOM_JAVA_COMPILER=openjdk)
 endif
 

core/droiddoc.mk

@@ -159,6 +159,9 @@ $(full_target): $(full_src_files) $(droiddoc_templates) $(droiddoc) $(html_dir_f
 	$(call prepare-doc-source-list,$(PRIVATE_SRC_LIST_FILE),$(PRIVATE_JAVA_FILES), \
 			$(PRIVATE_SOURCE_INTERMEDIATES_DIR) $(PRIVATE_ADDITIONAL_JAVA_DIR))
 	$(hide) ( \
+		head -1 $(PRIVATE_SRC_LIST_FILE) | tr " " "\n" | sort | uniq | tr "\n" " " > $(PRIVATE_SRC_LIST_FILE)_temp; \
+		cat $(PRIVATE_SRC_LIST_FILE) | sed '1 d' >> $(PRIVATE_SRC_LIST_FILE)_temp; \
+		mv $(PRIVATE_SRC_LIST_FILE)_temp $(PRIVATE_SRC_LIST_FILE); \
 		javadoc \
                 \@$(PRIVATE_SRC_LIST_FILE) \
                 -J-Xmx1280m \
@@ -191,6 +194,9 @@ $(full_target): $(full_src_files) $(full_java_lib_deps)
 	$(call prepare-doc-source-list,$(PRIVATE_SRC_LIST_FILE),$(PRIVATE_JAVA_FILES), \
 			$(PRIVATE_SOURCE_INTERMEDIATES_DIR) $(PRIVATE_ADDITIONAL_JAVA_DIR))
 	$(hide) ( \
+		head -1 $(PRIVATE_SRC_LIST_FILE) | tr " " "\n" | sort | uniq | tr "\n" " " > $(PRIVATE_SRC_LIST_FILE)_temp; \
+		cat $(PRIVATE_SRC_LIST_FILE) | sed '1 d' >> $(PRIVATE_SRC_LIST_FILE)_temp; \
+		mv $(PRIVATE_SRC_LIST_FILE)_temp $(PRIVATE_SRC_LIST_FILE); \
 		javadoc \
                 $(PRIVATE_DROIDDOC_OPTIONS) \
                 \@$(PRIVATE_SRC_LIST_FILE) \

core/main.mk

@@ -122,7 +122,7 @@ endif
 
 
 # Check for the correct version of java
-java_version := $(shell java -version 2>&1 | head -n 1 | grep '^java .*[ "]1\.6[\. "$$]')
+java_version := $(shell java -version 2>&1 | head -n 1 | grep '^java .*[ "]1\.[67][\. "$$]')
 ifneq ($(shell java -version 2>&1 | grep -i openjdk),)
 java_version :=
 endif
@@ -132,22 +132,22 @@ $(info You are attempting to build with an unsupported version)
 $(info of java.)
 $(info $(space))
 $(info Your version is: $(shell java -version 2>&1 | head -n 1).)
-$(info The correct version is: Java SE 1.6.)
+$(info The correct version is: Java SE 1.6 or 1.7.)
 $(info $(space))
 $(info Please follow the machine setup instructions at)
 $(info $(space)$(space)$(space)$(space)https://source.android.com/source/download.html)
 $(info ************************************************************)
 endif
 
 # Check for the correct version of javac
-javac_version := $(shell javac -version 2>&1 | head -n 1 | grep '[ "]1\.6[\. "$$]')
+javac_version := $(shell javac -version 2>&1 | head -n 1 | grep '[ "]1\.[67][\. "$$]')
 ifeq ($(strip $(javac_version)),)
 $(info ************************************************************)
 $(info You are attempting to build with the incorrect version)
 $(info of javac.)
 $(info $(space))
 $(info Your version is: $(shell javac -version 2>&1 | head -n 1).)
-$(info The correct version is: 1.6.)
+$(info The correct version is: 1.6 or 1.7.)
 $(info $(space))
 $(info Please follow the machine setup instructions at)
 $(info $(space)$(space)$(space)$(space)https://source.android.com/source/download.html)