Using Shared Libraries with cc and ld Options

138

Initializers for Shared Libraries

138

Styles of Initializers

138

Init/Fini Style Initializers

138

HP-UX-10.X Style Initializers

139

Using Init/Fini Initializers

139

Init and Fini Usage Example

139

Ordering Within an Executable or Shared Library

141

Ordering Among Executables and Shared Libraries

142

Using HP-UX 10.X Style Initializers

143

Declaring the Initializer with the +I Option

143

Order of Execution of Multiple Initializers

143

Initializer Syntax

144

Accessing Initializers' Addresses

144

Example: An Initializer for Each Library

144

Example: A Common Initializer for Multiple Libraries

146

The dlopen Shared Library Management Routines

148

The dlopen Routine

148

Syntax

148

Return Values

149

Description

150

Using dlopen to load a shared library

152

The dlsetlibpath Routine

153

Synopsis

153

Description

153

Using dlsetlibpath to set the dynamic search path

154

Multithread Usage

155

Return Value

155

Errors

155

The dlerrno Routine

155

Synopsis

155

Description

155

The dlgetfileinfo Routine

155

Synopsis

155

Description

155

Multithread Usage

157

Return Value

157

Errors

157

The dlerror Routine

157

Syntax

157

Description

157

Using dlerror to get diagnostic information

157

The dlsym Routine

157

Syntax

157

Return Values

158

Description

158

Usage

158

Using dlopen and dlsym to access either function or data objects

158

The dlget Routine

159

Syntax

159

Return Values

159

Description

159

Using dlget to retrieve information about loaded modules

160

The dlmodinfo Routine

160

Syntax

160

8Contents

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HP UX Software Transition Kit (STK) manual Contents