:#!/bin/sh# The above : is necessary on some buggy systems.# configure: Guess values for system-dependent variables# Output the flag definitions to stdout.# You can invoke 'configure' interactively to see the results.# When invoked with a file argument, the flags are written to this file.# To construct zip automatically using this file, type "make generic".# If this fails, then type "make list" to get a list of special targets.trap "rm -f conftest* core; exit 1" 1 2 3 15CFLAGS=""echo Check for the C compiler# Check which compiler we have and if it supports -O or -O2CC=ccOPT=""echo 'int foo() {return 0;}' > conftest.cif test -z "`(gcc -c -O2 conftest.c) 2>&1`" ; then  CC=gcc OPT="-O2"elif test -z "`(gcc -c -O conftest.c) 2>&1`" ; then  CC=gcc  OPT="-O"elif test -z "`cc -c -O  conftest.c 2>&1`" ; then  OPT="-O"fiCFLAGS="${CFLAGS} ${OPT}"echo Check for the C preprocessor# on SVR4, cc -E does not produce correct assembler files. Need /lib/cpp.CPP="${CC} -E"[ -f /usr/lib/cpp ] && CPP=/usr/lib/cpp[ -f /lib/cpp ] && CPP=/lib/cppecho Check if we can use asm codeOBJA=""if eval "$CPP match.s > _match.s 2>/dev/null"; then  if test ! -s _match.s || grep error < _match.s > /dev/null; then    :  elif eval "$CC -c _match.s >/dev/null 2>&1" && test -f _match.o; then    CFLAGS="${CFLAGS} -DASMV"    OBJA=match.o  fifirm -f _match.s _match.oecho Check if compiler generates underlinesif nm conftest.o | grep _foo > /dev/null 2>&1 ; then  :else  CPP="${CPP} -DNO_UNDERLINE"firm -f conftest.c conftest.oecho Check for BSD/SYSVOPT=""[ -f /usr/include/sys/dir.h ]    && OPT="-DSYSDIR"[ -f /usr/include/sys/ndir.h ]   && OPT="-DSYSNDIR"[ -f /usr/include/sys/dirent.h ] && OPT="-DDIRENT"[ -f /usr/include/sys/termio.h ] && OPT="-DSYSV"CFLAGS="${CFLAGS} ${OPT}"echo Check for /usr/local/bin and /usr/local/manBINDIR=$HOME/bin[ -d /usr/local/bin ] && BINDIR=/usr/local/binMANDIR=manl[ -d /usr/man/manl ]       && MANDIR=/usr/man/manl[ -d /usr/local/man/manl ] && MANDIR=/usr/local/man/manl[ -d /usr/local/man/man1 ] && MANDIR=/usr/local/man/man1LFLAGS2="-s"echo Check for NeXTif test -f /usr/bin/hostinfo; then  if /usr/bin/hostinfo | grep NeXT > /dev/null; then    if /usr/bin/hostinfo | grep -s "Mach 1"; then       CFLAGS="-O" LFLAGS2="-s -lsys_s"    elif /usr/bin/hostinfo | grep -s "Mach 2"; then       CFLAGS="-O" LFLAGS2="-s -object"    else       CFLAGS="-O2" LFLAGS2="-s -object"    fi  fifiif test $# = 0; then  echo CC=${CC} CFLAGS=\"${CFLAGS}\"  CPP=\"${CPP}\" OBJA=${OBJA}  echo BINDIR=${BINDIR} MANDIR=${MANDIR} LFLAGS2=\"${LFLAGS2}\"else  echo CC=${CC} CFLAGS=\"${CFLAGS}\"  CPP=\"${CPP}\" OBJA=${OBJA} \       BINDIR=${BINDIR} MANDIR=${MANDIR} LFLAGS2=\"${LFLAGS2}\" > $1fi