RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler Command-line Options
softvfp+vfpv2
Selects a floating-point library with software floating-point linkage that
uses VFP instructions. Select this option if you are interworking Thumb
code with ARM code on a system that implements a VFP unit.
If you select this option:
• Compiling with --thumb behaves in a similar way to --fpu=softvfp
except that it links with floating-point libraries that use VFP
instructions.
• Compiling with --arm behaves in a similar way to --fpu=vfpv2
except that all functions are given software floating-point linkage.
This means that functions pass and return floating-point arguments
and results in the same way as --fpu=softvfp, but use VFP
instructions internally.
Note
If you specify softvfp+vfpv2 with the --arm or --thumb option for C code,
it ensures that your interworking floating-point code is compiled to use
software floating-point linkage.
softvfp+vfpv3
Selects a floating-point library with software floating-point linkage that
uses VFPv3 instructions. Select this option if you are interworking
Thumb code with ARM code on a system that implements a VFPv3 unit.
See also
• --arm on page 2-7
• --cpu=name on page 2-15
• --thumb on page 2-86
• __softfp on page 4-15
• The --fpu option on page 4-32 in the Compiler User Guide
• Using the --fpu option on page 4-34 in the Compiler User Guide.
2.1.56 --[no_]friend_injection
This option controls the visibility of friend declarations in C++.
In C++, it controls whether or not the name of a class or function that is declared only
in friend declarations is visible when using the normal lookup mechanisms.
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