Re: header-macros

[Thien-Thi Nguyen]

better living through sed!

    2002-09-17  Thien-Thi Nguyen  <address@hidden>

        * header-macros: Expand omission baseline to usage boundary.

thi

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#!/bin/sh
# usage: header-macros HEADER [CPP-ARGS ...]

header=$1 ; shift

scan="gcc -E -dM"

omit=/tmp/header-macros.$$.sed

$scan -nostdinc "$@" $header 2>&1 1>/dev/null \
    | sed -e '/^In file/d' -e '/^ *from/d' \
          -e 's/.* \([^ ]*\): No such.*/#include <\1>/' \
    | $scan "$@" - \
    | sed 's,^\(#define [^ ]*\).*,/\1 /d,' > $omit

$scan "$@" $header | sed -f $omit -e 's,^[^ ]* \([^ ()]*\).*,\1,'

rm -f $omit

# header-macros ends here