#!/bin/sh

# Extra warnings, used e.g. for gcc.
warn=" -Wall -ansi -W -Wextra -Wdeclaration-after-statement -Wendif-labels -Wc++-compat"
# Extra standardness.
stdflags=" -std=c89"
# Extra extra.
extra=""
# what do executables look like?
_exe=""

case $PERL_CONFIG_SH in
'')
	if test -f config.sh; then TOP=.;
	elif test -f ../config.sh; then TOP=..;
	elif test -f ../../config.sh; then TOP=../..;
	elif test -f ../../../config.sh; then TOP=../../..;
	elif test -f ../../../../config.sh; then TOP=../../../..;
	else
		echo "Can't find config.sh."; exit 1
	fi
	. $TOP/config.sh
	;;
esac

: syntax: cflags [optimize=XXX] [file[.suffix]]
: displays the compiler command line for file

case "X$1" in
Xoptimize=*|X"optimize=*")
	eval "$1"
	shift
	;;
esac

also=': '
case $# in
1) also='echo 1>&2 "	  CCCMD = "'
esac

case $# in
0) set *.c; echo "The current C flags are:" ;;
esac

set `echo "$* " | sed -e 's/\.[oc] / /g' -e 's/\.obj / /g' -e "s/\\$obj_ext / /g"`

for file do

    case "$#" in
    1) ;;
    *) echo $n "    $file.c	$c" ;;
    esac

    : allow variables like toke_cflags to be evaluated

    if echo $file | grep -v / >/dev/null
    then
      eval 'eval ${'"${file}_cflags"'-""}'
    fi

    : or customize here

    case "$file" in
    DB_File) ;;
    GDBM_File) ;;
    NDBM_File) ;;
    ODBM_File) ;;
    POSIX) ;;
    SDBM_File) ;;
    av) ;;
    byterun) ;;
    deb) ;;
    dl) ;;
    doio) ;;
    doop) ;;
    dump) ;;
    globals) ;;
    gv) ;;
    hv) ;;
    locale) ;;
    madly) ;;
    main) ;;
    malloc) ;;
    mg) ;;
    miniperlmain) ;;
    numeric) ;;
    op) ;;
    opmini) ;;
    pad) ;;
    perl) ;;
    perlapi) ;;
    perlmain) ;;
    perly) ;;
    pp) ;;
    pp_ctl) ;;
    pp_hot) ;;
    pp_pack) ;;
    pp_sort) ;;
    pp_sys) ;;
    regcomp) ;;
    regexec) ;;
    run) ;;
    scope) ;;
    sv) ;;
    taint) ;;
    toke) ;;
    universal) ;;
    usersub) ;;
    utf8) ;;
    util) ;;
    *) ;;
    esac

    case "$cc" in
    *g++*)
      # Extra paranoia in case people have bad canned ccflags:
      # bad in the sense that the flags are accepted by g++,
      # but then whined about.
      for f in -Wdeclaration-after-statement -std=c89
      do
        ccflags=`echo $ccflags|sed 's/$f/ /'`
      done
      ;;
    esac
    cppflags=`echo $cppflags|sed 's/-Wdeclaration-after-statement/ /'`

    case "$cc" in
    *g++*)
      # Without -Wno-unused-variable g++ 4.x compiles are rather unwatchable
      # because of all the warnings about Perl___notused, and g++ doesn't do
      # __attribute__((unused)) (and even if at some stage it may, people do
      # have older gcc installations), and ((void)x) isn't enough to silence
      # the noises about XS functions not using their cv parameter, so we need
      # the -Wno-unused-parameter too.
      # Yes, we lose some valid warnings, but hopefully other compilers
      # (like gcc) will still pick up those warnings.
      for o in -Wno-unused-variable -Wno-unused-parameter
      do
        case "$warn" in
        *$o*) ;;
        *) warn="$warn $o" ;;
        esac
      done
      ;;
    esac


    : Can we perhaps use $ansi2knr here
    echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
    eval "$also "'"$cc -DPERL_CORE -c $ccflags $stdflags $optimize $warn $extra"'

    . $TOP/config.sh

    # end per file behaviour
done
