diff options
Diffstat (limited to 'unproto/cpp.sh')
| -rw-r--r-- | unproto/cpp.sh | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/unproto/cpp.sh b/unproto/cpp.sh index 8122b68..a039146 100644 --- a/unproto/cpp.sh +++ b/unproto/cpp.sh @@ -1,9 +1,35 @@ #!/bin/sh -# @(#) cpp.sh 1.2 91/09/22 21:21:43 +# @(#) cpp.sh 1.3 92/01/15 21:53:22 -# Unprototypeing preprocessor for non-ANSI C compilers. Define __STDC__ -# if you have enough courage. You will have to modify this script if -# your cc(1) command specifies output file names to the preprocessor. +# Unprototypeing preprocessor for pre-ANSI C compilers. On some systems, +# this script can be as simple as: +# +# /lib/cpp "$@" | unproto +# +# However, some cc(1) drivers specify output file names on the +# preprocessor command line, so this shell script must be prepared to +# intercept them. Depending on the driver program, the cpp options may +# even go before or after the file name argument(s). The script below +# tries to tackle all these cases. +# +# You may want to add -Ipath_to_stdarg.h_file, -Dvoid=, -Dvolatile=, +# and even -D__STDC__. -exec /lib/cpp "$@" -Dconst= -Dvolatile= | unproto +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 |