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Diffstat (limited to 'cpp.sh')
-rw-r--r-- | cpp.sh | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -0,0 +1,35 @@ +#!/bin/sh + +# @(#) cpp.sh 1.3 92/01/15 21:53:22 + +# Unprototypeing preprocessor for pre-ANSI C compilers. On some systems, +# this script can be as simple as: +# +# /lib/cpp "$@" | unproto +# +# However, some cc(1) drivers specify output file names on the +# preprocessor command line, so this shell script must be prepared to +# intercept them. Depending on the driver program, the cpp options may +# even go before or after the file name argument(s). The script below +# tries to tackle all these cases. +# +# You may want to add -Ipath_to_stdarg.h_file, -Dvoid=, -Dvolatile=, +# and even -D__STDC__. + +cpp_args="" + +while : +do + case $1 in + "") break;; + -*) cpp_args="$cpp_args $1";; + *) cpp_args="$cpp_args $1" + case $2 in + ""|-*) ;; + *) exec 1> $2 || exit 1; shift;; + esac;; + esac + shift +done + +/lib/cpp $cpp_args | unproto |