Compile-time options

In addition to the configure options listed in the previous section, there are a few things that can be affected at compile-time with C definitions, rather than with configure. Using any of these is unusual.

To specify extra compiler flags (`-Dname' in this case), the simplest thing to do is:

make XCFLAGS="ccoptions"

You can also set the CFLAGS environment variable before running configure. See section `configure environment' in Kpathsea.

Anyway, here are the possibilities:

`-DFIXPT'

`-DNO_MF_ASM'

Use the original WEB fixed-point routines for Metafont and MetaPost arithmetic calculations regarding fractions. By default, assembly-language routines are used on x86 hardware with GNU C (unless `NO_MF_ASM' is defined), and floating-point routines are used otherwise.

`-DIPC_DEBUG'

Report on various interprocess communication activities. See section IPC and TeX.

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