Index

3.17 Hardware Models and Configurations

Earlier we discussed the standard option -b which chooses among different installed compilers for completely different target machines, such as VAX vs. 68000 vs. 80386.

In addition, each of these target machine types can have its own special options, starting with -m, to choose among various hardware models or configurations—for example, 68010 vs 68020, floating coprocessor or none. A single installed version of the compiler can compile for any model or configuration, according to the options specified.

Some configurations of the compiler also support additional special options, usually for compatibility with other compilers on the same platform.

These options are defined by the macro TARGET_SWITCHES in the machine description. The default for the options is also defined by that macro, which enables you to change the defaults.

• ARC Options
• ARM Options
• AVR Options
• CRIS Options
• Darwin Options
• DEC Alpha Options
• DEC Alpha/VMS Options
• FRV Options
• H8/300 Options
• HPPA Options
• i386 and x86-64 Options
• IA-64 Options
• M32R/D Options
• M680x0 Options
• M68hc1x Options
• MCore Options
• MIPS Options
• MMIX Options
• MN10300 Options
• NS32K Options
• PDP-11 Options
• PowerPC Options
• RS/6000 and PowerPC Options
• S/390 and zSeries Options
• SH Options
• SPARC Options
• System V Options
• TMS320C3x/C4x Options
• V850 Options
• VAX Options
• x86-64 Options
• Xstormy16 Options
• Xtensa Options
• zSeries Options

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