Allow customization of Java compiler flags

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@566 632fc199-4ca6-4c93-a231-07263d6284db

BUILDING.txt

@@ -469,6 +469,13 @@ Java front-end classes to support it.  This allows the TurboJPEG/OSS dynamic
 library to be used directly from Java applications.  See java/README for more
 details.
 
+If you are using CMake 2.8, you can set the Java_JAVAC_EXECUTABLE,
+Java_JAVA_EXECUTABLE, and Java_JAR_EXECUTABLE CMake variables to specify
+alternate commands or locations for javac, jar, and java (respectively.)  If
+you are using CMake 2.6, set JAVA_COMPILE, JAVA_RUNTIME, and JAVA_ARCHIVE
+instead.  You can also set the JAVACFLAGS CMake variable to specify arguments
+that should be passed to the Java compiler when building the front-end classes.
+
 
 ========================
 Installing libjpeg-turbo

CMakeLists.txt

@@ -118,6 +118,9 @@ include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
 if(WITH_JAVA)
   find_package(Java)
   find_package(JNI)
+  if(DEFINED JAVACFLAGS)
+    message(STATUS "Java compiler flags = ${JAVACFLAGS}")
+  endif()
 endif()
 
 

java/CMakeLists.txt

@@ -39,8 +39,9 @@ set(JAVA_CLASSES ${JAVA_CLASSES}
 set(JAVA_CLASSES_FULL ${JAVA_CLASSES_FULL}
   ${OBJDIR}/org/libjpegturbo/turbojpeg/TJLoader.class)
 
+string(REGEX REPLACE " " ";" JAVACFLAGS "${JAVACFLAGS}")
 add_custom_command(OUTPUT ${JAVA_CLASSES_FULL} DEPENDS ${JAVA_SOURCES}
-  COMMAND ${JAVA_COMPILE} -d ${OBJDIR} ARGS ${JAVA_SOURCES})
+  COMMAND ${JAVA_COMPILE} ARGS ${JAVACFLAGS} -d ${OBJDIR} ${JAVA_SOURCES})
 
 add_custom_command(OUTPUT ${JAR_FILE} DEPENDS ${JAVA_CLASSES_FULL}
   ${MANIFEST_FILE}