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|
#!/bin/sh
#
# List specified macros
#
set -e
: ${CC:=cc}
: ${CPPFLAGS:=}
: ${MACRO:=.}
: ${VENDOR:=}
: ${INCLUDE:=}
: ${TMPFILE:=.$(basename $0).c}
: ${PREPEND:=}
: ${EXPAND:=no}
NL="
"
usage() {
cat <<-EOF
usage: $(basename $0) -m:v:i:t:xh
-i INCLUDE include file (e.g. <errno.h>)
-m REGEX regular expression macro name filter
-s PATH path to supplemental list, one per line
-t TMPFILE compiler intermediate tmp file
-v VENDOR compiler vendor name (e.g. gcc, clang, sunpro)
-x expand macros
-h print this usage message
Report bugs to <william@25thandClement.com>
EOF
}
while getopts i:m:s:t:v:xh OPT; do
case "${OPT}" in
i)
case "${OPTARG}" in
\<*)
INCLUDE="${INCLUDE}#include ${OPTARG}${NL}"
;;
\"*)
INCLUDE="${INCLUDE}#include ${OPTARG}${NL}"
;;
*)
INCLUDE="${INCLUDE}#include <${OPTARG}>${NL}"
;;
esac
;;
m)
MACRO="${OPTARG}"
;;
s)
PREPEND="${OPTARG}"
;;
t)
TMPFILE="${OPTARG}"
;;
v)
VENDOR="${OPTARG}"
;;
x)
EXPAND=yes
;;
h)
usage
exit 0
;;
*)
usage >&2
exit 1
;;
esac
done
vendor() {
SCRIPT="$(dirname $0)/vendor.cc"
if [ -n "${SCRIPT}" -a -x "${SCRIPT}" ]; then
env CC="${CC}" ${SCRIPT}
else
${CC} -E - <<-EOF | awk '/sunpro/||/clang/||/gcc/||/other/{ print $1; exit; }'
#if defined __SUNPRO_C
sunpro
#elif defined __clang__
clang
#elif defined __GNUC__
gcc
#else
other
#endif
EOF
fi
}
filter() {
awk "\$1~/^#define/ && \$2~/${MACRO}/{ print \$2 }"
}
macros() {
if [ -n "${PREPEND}" ]; then
cat "${PREPEND}"
fi
case "${VENDOR:-$(vendor)}" in
*sunpro*)
trap "rm -f ${TMPFILE}" EXIT
echo "${INCLUDE}" >| ${TMPFILE}
${CC} ${CPPFLAGS} -xM ${TMPFILE} | awk '/\.h$/{ print $2 }' | sort -u | xargs cat | filter
rm ${TMPFILE}
;;
*)
echo "${INCLUDE}" | ${CC} ${CPPFLAGS} -dM -E - | filter
;;
esac
}
expand() {
if [ "${EXPAND}" = "yes" ]; then
(echo "${INCLUDE}"; awk '{ print "\"<<<< "$1" >>>>\" "$1 }') | ${CC} ${CPPFLAGS} -E - | awk '$1~/^"<<<</{ print $2""substr($0, index($0, ">>>>") + 5) }'
else
cat
fi
}
macros | sort -u | expand
|
