web2c: Compile-time options
2.2 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'. (kpathsea)configure environment.
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. IPC
and TeX IPC and TeX.