ODB 下载与安装 （Linux）

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 Installing ODB on UNIX

Introduction

This guide presents step-by-step instructions for installing the ODB system on UNIX-like operating systems, such as GNU/Linux, Mac OS X, Solaris, etc.

Before you can start using ODB in your applications, you will need to install three essential packages: the ODB compiler (odb), the common runtime library (libodb), and the database-specific runtime library (libodb-<database>). The database runtime library is specific to the database system you are planning to use. For example, if you are going to use MySQL, then the the database runtime will be libodb-mysql. If you would like to use several database systems, install the corresponding runtime libraries for each of them.

You may also choose to install optional ODB packages such as ODB profile libraries, the ODB examples (odb-examples) and the test suite (odb-tests). You only need to install a profile library if you are planning to use the corresponding profile in your application. Similarly, you only need the examples and test suite if you are interested in building the examples or running the tests.

Prerequisites

In order to build ODB source packages you will need a C++ compiler. You will also most likely need a client library for the database system of your choice. For example, for MySQL you need the libmysqlclient library. The INSTALL file accompanying each database runtime library has more information on the database-specific prerequisites.

If you plan to build the ODB compiler from source, you will also need the GCC compiler with plugin support enabled. Alternatively, you can use one of the pre-compiled binary packages in which case a private copy of the GCC compiler is included in the ODB compiler distribution.

Installing the ODB Compiler from a Binary Package

If you would like to use the pre-compiled binary package for the ODB compiler, then you have two options: If you are using Debian/Ubuntu or one of the RedHat or derivative distributions (Fedora, RHEL, CentOS, etc.), then the easiest way to install the ODB compiler is to download the .deb or .rpm package for your CPU architecture. For example, for Debian/Ubuntu:

sudo dpkg -i odb_x.y.z-n_<arch>.deb
  

For RedHat:

sudo rpm -i odb-x.y.z-n.<arch>.rpm
  

Otherwise, simply download the plain archive for your operating system and CPU architecture and unpack it into a directory of your choice, for example /opt/. The ODB compiler binary will be in the bin/ directory inside the package directory, for example /opt/odb-x.y.z-<arch>-linux-gnu/bin/. You can run the ODB compiler by either using the absolute path, for example:

/opt/odb-x.y.z-<arch>-linux-gnu/bin/odb --version
  

Or you can add the bin/ directory to the PATH environment variable, for example:

export PATH=/opt/odb-x.y.z-<arch>-linux-gnu/bin:$PATH
odb --version
  

Note also that while you can move the ODB compiler directory around, you cannot move individual sub-directories or files inside it. For example, copying or linking the ODB compiler executable to /usr/local/bin/ will not work.

Installing the ODB Compiler from a Source Package

If you would like to build the ODB compiler yourself, you can download the source package and use the standard autotools build system to compile and install it on your machine. The INSTALL file in the ODB compiler source package contains more information on the prerequisites and the build procedure.

Installing the Common Runtime Library

To install the common runtime library, download the libodb source package and use the standard autotools build system to compile and install it on your machine. Normally, the following commands are sufficient:

./configure
make
make install
  

The INSTALL file in the libodb package contains more detailed build and installation instructions.

Installing the Database Runtime Library

To install the database-specific runtime library, download the libodb-<database>source package and use the standard autotools build system to compile and install it on your machine. Normally, the following commands are sufficient:

./configure
make
make install
  

The INSTALL file in the libodb-<database> package contains information on database-specific prerequisites as well as more detailed build and installation instructions.

Installing Profile Libraries

If you would like to install a profile library, download the corresponding source package (libodb-<profile>) and use the standard autotools build system to compile and install it on your machine. Normally, the following commands are sufficient:

./configure
make
make install
  

The INSTALL file in the libodb-<profile> package contains information on profile-specific prerequisites as well as more detailed build and installation instructions.

Building and Running the Examples

If you would like to build and run the ODB examples, download the odb-examplespackage and use the standard autotools build system to compile it on your machine. Normally, the following commands are sufficient:

./configure --with-database <database>
make
  

Alternatively, you can build each example manually from the command line. The README files accompanying each example contain instructions on how to do this.

Once the build is completed, you can run each example manually from the command line. See the README files accompanying each example for more information on how to do this. Alternatively, you can run all of the examples automatically using the makecheck target, for example:

make check
  

In the default configuration and when run automatically, the examples will try to connect to the database system on the local host and use odb_test as both the login name and the database name. Note that by running the examples you will overwrite any existing data that may be stored in the odb_test database.

The INSTALL file in the odb-examples package contains more detailed information on how to configure, build, and run the examples.

Building and Running the Tests

If you would like to build and run the ODB test suite, download the odb-testspackage and use the standard autotools build system to compile it on your machine. Normally, the following commands are sufficient:

./configure --with-database <database>
make
  

To run the tests use the make check target, for example:

make check
  

In the default configuration the tests will try to connect to the database system on the local host and use odb_test as both the login name and the database name. Note that by running the test suite you will overwrite any existing data that may be stored in the odb_test database.

The INSTALL file in the odb-tests package contains more detailed information on how to configure, build, and run the test suite.