openwrt sqlite3移植
一、配置支持数据库
1、在工程源码下执行make menuconfig 在界面里面选上数据库支持
Utilities----->
database------>
sqlite2-cli............ sqlite (v2.x)database engine (cli)
二、修改数据库版本
1、Openwrt 支持的数据版本是sqlite2的，sqlite2的接口和sqlite3接口差别很大
2、修改支持sqlite3，vim Feeds/packages/libs/sqlite2/Makefile
PKG_NAME:=sqlite3
PKG_VERSION:=3.6.17
PKG_RELEASE:=3
详细的脚本请参考（注：直接拷贝脚本进去编译有可能会出现语法错误）
include $(TOPDIR)/rules.mk
PKG_NAME:=sqlite3
PKG_VERSION:=3.6.17
PKG_RELEASE:=3
PKG_SOURCE:=sqlite-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=http://www.sqlite.org/
PKG_MD5SUM:=838dbac20b56d2c4292e98848505a05b
PKG_BUILD_DIR:=$(BUILD_DIR)/sqlite-$(PKG_VERSION)
PKG_BUILD_DEPENDS:=libncurses libreadline
PKG_FIXUP:=autoreconf
PKG_INSTALL:=1
include $(INCLUDE_DIR)/package.mk
TARGET_CFLAGS += $(FPIC)
define Package/sqlite2/Default
SUBMENU:=database
TITLE:=sqlite (v2.x) database engine
URL:=http://www.sqlite.org/
endef
define Package/libsqlite2
$(call Package/sqlite2/Default)
SECTION:=libs
CATEGORY:=Libraries
TITLE+= (library)
endef
define Package/libsqlite2/description
sqlite is a small C library that implements a self-contained,embeddable,
zero-configuration sql database engine.
This package contains the sqlite (v2.x) shared library,used by otherprograms.
endef
define Package/sqlite2-cli
$(call Package/sqlite2/Default)
SECTION:=utils
CATEGORY:=Utilities
DEPENDS:=+libncurses +libreadline +libpthread
TITLE+= (cli)
SUBMENU:=database
endef
define Package/sqlite2-cli/description
sqlite is a small C library that implements a self-contained,
zero-configuration sql database engine.
This package contains a terminal-based front-end to the sqlite (v2.x)library
that can evaluate queries interactively and display the results in
multiple formats.
endef
define Build/Configure
$(call Build/Configure/Default,\
--enable-shared \
--enable-static \
,\
config_BUILD_CC="$(HOSTCC)"\
config_BUILD_CFLAGS="-O2" \
config_TARGET_CC="$(TARGET_CC)" \
config_TARGET_CFLAGS="$(TARGET_CFLAGS)" \
config_TARGET_READLINE_INC="$(TARGET_CPPFLAGS)" \
config_TARGET_READLINE_LIBS="$(TARGET_LDFLAGS)-lreadline -lncurses" \
config_TARGET_TCL_INC="-DNO_TCL=1" \
)
endef
define Build/InstallDev
$(INSTALL_DIR) $(1)/usr/include
$(CP) $(PKG_INSTALL_DIR)/usr/include/sqlite3.h $(1)/usr/include/
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/usr/lib/libsqlite3.{a,so*} $(1)/usr/lib/
$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
$(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/sqlite3.pc $(1)/usr/lib/pkgconfig/
endef
define Package/libsqlite2/install
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/usr/lib/libsqlite3.so.* $(1)/usr/lib/
endef
define Package/sqlite2-cli/install
$(INSTALL_DIR) $(1)/usr/bin
endef
#$(CP) $(PKG_INSTALL_DIR)/usr/lib/libsqlite3.so.*$(1)/usr/lib/
#$(INSTALL_BIN)$(PKG_INSTALL_DIR)/usr/bin/sqlite $(1)/usr/bin/
$(eval $(call BuildPackage,libsqlite2))
$(eval $(call BuildPackage,sqlite2-cli))
三、库依赖关系
1、由于sqlite3需要用到线程库，直接编译会出现如下错误
missing dependencies libpthread.so.0
2、需要添加依赖线程库，在Makfile里面的DEPENDS添加libpthread 的支持
define Package/sqlite2-cli
$(call Package/sqlite2/Default)
SECTION:=utils
CATEGORY:=Utilities
DEPENDS:=+libncurses +libreadline +libpthread
TITLE+= (cli)
SUBMENU:=database
endef
3、再次编译，如果还出现错误，说面当前openwrt系统没有编译libpthread进去，需要到执行make menuconfig 配置支持
Basesystem ------->
<*>libthread……………………POSIX thread library
