linux sqlite 静态库
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1、在Redhat Linux9 上用arm-linux-gcc编译成功sqlite-3.3.6 静态库版本。
2、在Redhat Linux9 上用arm-linux-gcc编译成功基于sqlite3 静态库的应用程序。
Compile SQLite using the cross-compiler such as arm-linux-gcc
first, get sqlite-3.3.6.tar.gz from www.sqlite.org
unzip it,
#tar -zxvf sqlite-3.3.6.tar.gz
change into the sqlite-3.3.6 directory
cd sqlite-3.3.6
make a new directory such as 'build' under sqlite-3.3.6 directory,
open the configure-script using your favorite text-editor ,such as:
#vi configure
I recomamnd that you make a copy of configure before editing the configure file
cp configure configure.old
and edit the configure.
Comment out the following commands by putting a '#' in front of them(looks like):
#if test "$cross_compiling" = "yes"; then
# { { echo "$as_me:$LINENO:: error: unable to find a compiler for building build tools" >&5
#echo "$as_me: error: unable to find a compiler for building build tools" >&2;}
# { (exit 1); exit 1; }; }
#fi
. . .
#else
# test "$cross_compiling" = yes &&
# { { echo "$as_me:$LINENO:: error: cannot check for file existence when cross compiling" >&5
#echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
# { (exit 1); exit 1; }; }
. . .
#else
# test "$cross_compiling" = yes &&
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# { { echo "$as_me:$LINENO:: error: cannot check for file existence when cross compiling" >&5
#echo "$as_me: error: cannot check for file existence when cross compiling" >&2;}
# { (exit 1); exit 1; }; }
Save the configure script, change into the build directory you created and call the edited configure script from the sqlite
directory by using the following option:
../sqlite/configure --disable-tcl --host=arm-linux
After that configure should have created a Makefile and a libtool script in your build directory.
Open the Makefile using your favorite text editor and find the following lines:
BCC = arm-linux-gcc -g -O2
change to
BCC = gcc -g -O2
The reason for these changes is that the created files have to be executed on the PC during the compilation, so we have to
compile them with the standard gcc and not the arm-linux-gcc.
if you want compile static library version of sqlite3(only one execute file for distribution) on ARM, edit Makefile ,
find
sqlite3$(TEXE): $(TOP)/src/shell.c .libs/libsqlite3.la sqlite3.h
change to
sqlite3$(TEXE): $(TOP)/src/shell.c .libs/libsqlite3.a sqlite3.h
find
-o $@ $(TOP)/src/shell.c .libs/libsqlite3.la /
change to
-o $@ $(TOP)/src/shell.c .libs/libsqlite3.a /
save and quit editor
run 'make' command to create the sqlite3 execute file, after a successful compile,Now you should find a hiden “.libs”
directory in your build directory containing sqlite shared object files, like libsqlite.so or static libray files like
libsqlite3.a .
run 'arm-linux-strip sqlite3' to decrease the execute file size.
upload the sqlite3 to target ARM9 board by any FTP client and make it executive:
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on ARM9 board with terminal or telnet ,run
chmod 775 sqlite3
and then run sqlite3 like this
sqlite3 ex2
,if you see the following messages:
SQLite version 3.3.6
Enter ".help" for instructions
sqlite>
input some commands to do something,
sqlite> create table tbl(one varchar(10),two smallint);
sqlite> insert into tbl values('hello',10);
sqlite> insert into tbl values('goodbye',20);
sqlite> .quit
more commands , please visit www.sqlite.org for details
then use 'ls ex2' to list files in currect directory,
if you see 'ex2' file,
congratulations,you have successfully making a standalone 'sqlite3'.
next step we should compile the example code on www.sqlite.org's quickstart page
make a 'test.c' file in 'build' directory, content as showed:
#include <stdio.h>
#include "sqlite3.h" /* orignal is <sqlite3.h> */
static int callback(void *NotUsed, int argc, char **argv, char **azColName){
int i;
for(i=0; i<argc; i++){
printf("%s = %s/n", azColName[i], argv[i] ? argv[i] : "NULL");
}
printf("/n");
return 0;
}
int main(int argc, char **argv){
sqlite3 *db;
char *zErrMsg = 0;
int rc;
if( argc!=3 ){
fprintf(stderr, "Usage: %s DATABASE SQL-STATEMENT/n", argv[0]);
exit(1);
}
rc = sqlite3_open(argv[1], &db);
if( rc ){
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fprintf(stderr, "Can't open database: %s/n", sqlite3_errmsg(db));
sqlite3_close(db);
exit(1);
}
rc = sqlite3_exec(db, argv[2], callback, 0, &zErrMsg);
if( rc!=SQLITE_OK ){
fprintf(stderr, "SQL error: %s/n", zErrMsg);
sqlite3_free(zErrMsg);
}
sqlite3_close(db);
return 0;
}
save and quit editor,
#arm-linux-gcc test.c -L.libs -lsqlite3 -static
explaination: -L.libs show that the lib searching path is '.libs'
'-lsqlite3 -static' show that the lib name is libsqlite3.a,the 'lib' and '.a' is added by linker.
with the above command ,we can compile a standalone application with sql databse supported.
use arm-linux-strip to decrease its size:
arm-linux-strip a.out
upload to ARM9 board, make it runable and test it:
[root@fa fa]# a.out ex "select * from tbl"
one = hello
two = 10
one = goodbye
two = 20
[root@fa fa]#
if you see the above result , ok you make it.
over.
wish the article is usefull for you!