HP-UX 11i September 2001 Release Notes

Chapter 13
191
13 Programming
Changes to the linker/dld Interface
Patches to the linker/dld interface include the following enhancements:
• Added support for the CXperf performance measuring tool in both 32-bit and 64-bit
versions of the ld command. Both versions recognize the +tools option, which
enables CXperf information to be propagated to an executable program; see “CXperf
Performance Monitoring Support” in Chapter 7 for information on CXperf.
• Added support for huge data (.bss > 4GB)
• A defect was repaired whereby +Oprocelim removed more than it should have
causing a runtime error.
• Performance shows a definite improvement:
— 32-bit ld: approximately 30% link time improvement
— 64-bit ld: approximately 8% link time improvement
• Support OBJDEBUG architecture in both 32-bit and 64-bit linker.
• Added support for executable stack.
• Added global symbol table support.
• Added support for object code repository reuse.
Neither functionality nor compatibility are affected by the code changes. However, for
64-bit programs, mixing object files having non-weakorder sections with object files
having weakorder sections might cause the ordering of text sections to change.
The new version of the linker requires 34112 blocks.