Raspberry Pi上的Sqlite4java

Question

我想在Raspberry Pi上使用我的java项目。这段代码依赖于sqlite4java，它使用许多平台的本机实现，包括arm处理器link。

问题是，Java无法加载所需的ARM处理器的sqlite包装。我是做如下：

1. 复制的所有版本（试图逐个）我改名为libsqlite4java-linux-arm.so预编译库（libsqlite4java-linux-armv5te.so，libsqlite4java-linux-armv7a.so，libsqlite4java-linux-arm.so）的。

2. 命令java -Djava.library.path=. -jar sqlite4java.jar -d给输出：

   140213:092447.509 FINE [sqlite] Internal: loading library 
   140213:092447.536 FINE [sqlite] Internal: java.library.path=. 
   140213:092447.538 FINE [sqlite] Internal: sqlite4java.library.path=null 
   140213:092447.541 FINE [sqlite] Internal: cwd=/home/pi/sqlite4java-282/. 
   140213:092447.544 FINE [sqlite] Internal: default path=/home/pi/sqlite4java-282 
   140213:092447.554 FINE [sqlite] Internal: forced path=null 
   140213:092447.558 FINE [sqlite] Internal: os.name=linux; os=linux 
   140213:092447.562 FINE [sqlite] Internal: os.arch=arm 
   140213:092447.575 FINE [sqlite] Internal: trying to load sqlite4java-linux-arm from /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so 
   140213:092447.596 FINE [sqlite] Internal: cannot load sqlite4java-linux-arm from /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: java.lang.UnsatisfiedLinkError: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: cannot open shared object file: No such file or directory 
   140213:092447.605 FINE [sqlite] Internal: trying to load sqlite4java-linux-arm 
   140213:092447.617 FINE [sqlite] Internal: cannot load sqlite4java-linux-arm: java.lang.UnsatisfiedLinkError: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: cannot open shared object file: No such file or directory 
   140213:092447.622 FINE [sqlite] Internal: trying to load sqlite4java-linux 
   140213:092447.627 FINE [sqlite] Internal: cannot load sqlite4java-linux: java.lang.UnsatisfiedLinkError: no sqlite4java-linux in java.library.path 
   140213:092447.638 FINE [sqlite] Internal: trying to load sqlite4java 
   140213:092447.642 FINE [sqlite] Internal: cannot load sqlite4java: java.lang.UnsatisfiedLinkError: no sqlite4java in java.library.path 
   140213:092447.645 FINE [sqlite] Internal: trying to load sqlite4java-linux-arm-d 
   140213:092447.660 FINE [sqlite] Internal: cannot load sqlite4java-linux-arm-d: java.lang.UnsatisfiedLinkError: no sqlite4java-linux-arm-d in java.library.path 
   140213:092447.676 FINE [sqlite] Internal: trying to load sqlite4java-linux-d 
   140213:092447.680 FINE [sqlite] Internal: cannot load sqlite4java-linux-d: java.lang.UnsatisfiedLinkError: no sqlite4java-linux-d in java.library.path 
   140213:092447.683 FINE [sqlite] Internal: trying to load sqlite4java-d 
   140213:092447.699 FINE [sqlite] Internal: cannot load sqlite4java-d: java.lang.UnsatisfiedLinkError: no sqlite4java-d in java.library.path 
   Error: cannot load SQLite 
   java.lang.UnsatisfiedLinkError: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: /home/pi/sqlite4java-282/libsqlite4java-linux-arm.so: cannot open shared object file: No such file or directory 
   at java.lang.ClassLoader$NativeLibrary.load(Native Method) 
   at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1957) 
   at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1882) 
   at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1843) 
   at java.lang.Runtime.load0(Runtime.java:795) 
   at java.lang.System.load(System.java:1061) 
   at com.almworks.sqlite4java.Internal.tryLoadFromPath(Internal.java:337) 
   at com.almworks.sqlite4java.Internal.loadLibraryX(Internal.java:117) 
   at com.almworks.sqlite4java.SQLite.main(SQLite.java:368) 
   

3. 试图建立LD_LIBRARY_PATH到/usr/lib/arm-linux-gnueabihf和/usr/lib

在给定的路径文件存在。我已经安装了sqlite3和libsqlite3-dev。我使用的是QEMU仿真器的最新raspbian发行：

$ uname -a 
$ Linux raspberrypi 3.10.26+ #2 Fri Jan 17 22:13:59 EST 2014 armv6l GNU/Linux 

任何帮助将是有益的。

谢谢！

Answer 1

最后我找到了解决办法。我必须在Raspbian上构建库文件。 下面是步骤：

1. 获取源从here
2. 获得从here
3. 将sqlite_wrap.c到源目录sqlite_wrap.c文件。您需要native,sqlite目录和sqlite_wrap.c文件。

4. 与内容创建RELEASE文件：

   #gcc 
   gcc -O2 -DNDEBUG -fpic -DARM -DARCH="ARM" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c ./sqlite/sqlite3.c -o sqlite3.o 
   gcc -O2 -DNDEBUG -fpic -DARM -DARCH="ARM" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c sqlite_wrap.c -o sqlite_wrap.o 
   gcc -O2 -DNDEBUG -fpic -Di586 -DARCH="i586" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I./native -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c ./native/sqlite3_wrap_manual.c -o sqlite3_wrap_manual.o 
   gcc -O2 -DNDEBUG -fpic -Di586 -DARCH="i586" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -I./sqlite -I./native -I/usr/lib/jvm/jdk-7-oracle-armhf/include -I/usr/lib/jvm/jdk-7-oracle-armhf/include/linux -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_MEMORY_MANAGEMENT -DSQLITE_ENABLE_STAT2 -DHAVE_READLINE=0 -DSQLITE_THREADSAFE=1 -DSQLITE_THREAD_OVERRIDE_LOCK=-1 -DTEMP_STORE=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_OMIT_DEPRECATED -DSQLITE_OS_UNIX=1 -c ./native/intarray.c -o intarray.o 
   gcc -O2 -DNDEBUG -fpic -Di586 -DARCH="i586" -DLINUX -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_LITTLE_ENDIAN -fno-omit-frame-pointer -fno-strict-aliasing -static-libgcc -shared -mno-cygwin -Wl,-soname=libsqlite4java-linux-arm.so -o libsqlite4java-linux-arm.so sqlite3.o sqlite_wrap.o sqlite3_wrap_manual.o intarray.o 
   

5. chmod +x RELEASE并运行它./RELEASE。

6. libsqlite4java-linux-arm.so将被构建，您需要将它复制到应用程序的正确路径中。