Creating and Using Libraries

Version Control with Shared Libraries

Figure 5-5

During a link, the linker records the file name of the opened library in the shared library list of the output file. However, if the shared library is a file system link to the actual library, the linker does not record the name of the library the file system link points to. Rather it records the name of the file system link.

For example, if /tmp/libmine.sl is a file system link to /X/libapp.sl, the following command records /tmp/libmine.sl in a.out, not /X/libapp.sl as might be expected:

$ ld /opt/langtools/lib/crt0.o main.o -L /tmp -lmine -lc

To use library-level versioning in this situation, you must set up corresponding file system links to make sure older applications linked with the older libraries run with these libraries. Otherwise, older applications could end up running with newer shared libraries. In addition, you must include the absolute path name in the internal name of the new library.

For example, in 32-bit mode, to make the above example work correctly with library-level versioning, first implement library-level versioning with the actual library /X/libapp.sl and include the absolute path in the internal name of the new library:

$ mv /X/libapp.sl /X/libapp.0

Rename old version.

$ ld

-b

-o /X/libapp.1 +h /X/libapp.1 *.o

Create new version.

$ ln

-s

/X/libapp.1 /X/libapp.sl

Set up symbolic link.

Then set up the corresponding file system links:

$ ln -s /X/libapp.0

/tmp/libmine.0

Link to old version.

$ ln -s

/X/libapp.1

/tmp/libmine.1

Link to new version.

$ rm

/tmp/libmine.sl

Remove old link.

$ ln

-s

/X/libapp.sl /tmp/libmine.sl

Link to the link.

Chapter 5

153

Page 153
Image 153
Kenwood HP 9000 manual Then set up the corresponding file system links

HP 9000 specifications

The Kenwood HP 9000 is a cutting-edge home appliance designed for culinary enthusiasts seeking to elevate their cooking experience. This powerful kitchen machine stands out for its multi-functionality, combining the roles of a food processor, blender, and mixer into one sleek unit.

One of the flagship features of the Kenwood HP 9000 is its robust motor, which delivers exceptional performance across various tasks. With a powerful motor that operates at multiple speeds, users can tackle everything from kneading dough to finely chopping vegetables with ease. The variable speed control allows for precision, ensuring that every ingredient is processed to perfection according to individual preferences.

The HP 9000 comes equipped with a variety of attachments that enhance its versatility. Among these are a stainless-steel mixing bowl, a dough hook, a whisk, and multiple cutting blades. This extensive array of accessories means that users can whip up delightful pastries, create homemade pasta, or prepare smoothies with minimal hassle. Each attachment is designed for easy attachment and removal, making the transition between tasks seamless and efficient.

Another key characteristic of the Kenwood HP 9000 is its advanced safety features. The design incorporates mechanisms that prevent the machine from operating unless all components are securely in place. This not only gives users peace of mind while cooking but also ensures longevity for the appliance, reducing the risk of wear and tear over time.

In terms of design, the HP 9000 is both modern and aesthetically pleasing. Its ergonomic shape and compact size make it easy to store and use in various kitchen settings, while the high-quality materials used in its construction guarantee durability and longevity. The user interface is intuitive, with clearly labeled buttons that facilitate operation, ensuring that even novice cooks can navigate the machine effortlessly.

Additionally, the Kenwood HP 9000 features innovative technologies, such as an integrated digital timer and a pulse function for added control during food preparation. These features enhance cooking precision, allowing users to achieve consistent results every time.

In summary, the Kenwood HP 9000 is an exceptional kitchen appliance that combines power, versatility, and safety. With its advanced features and user-friendly design, it is an ideal choice for anyone looking to simplify their cooking process while achieving professional-level results. Whether you're whipping up a quick meal or tackling an elaborate recipe, the HP 9000 is a reliable companion that will inspire culinary creativity.