source: vendor/perl/5.8.8/writemain.SH

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
: This forces SH files to create target in same directory as SH file.
: This is so that make depend always knows where to find SH derivatives.
case "$0" in
*/*) cd `expr X$0 : 'X\(.*\)/'` ;;
esac
echo "Extracting writemain (with variable substitutions)"
: This section of the file will have variable substitutions done on it.
: Move anything that needs config subs from !NO!SUBS! section to !GROK!THIS!.
: Protect any dollar signs and backticks that you do not want interpreted
: by putting a backslash in front.  You may delete these comments.
rm -f writemain
$spitshell >writemain <<!GROK!THIS!
$startsh
!GROK!THIS!

: In the following dollars and backticks do not need the extra backslash.
$spitshell >>writemain <<'!NO!SUBS!'
# This script takes the plain miniperlmain.c and writes out perlmain.c
# which includes all the extensions.
# The command line arguments name extensions to be used.
#  E.g.:  sh writemain SDBM_File POSIX > perlmain.c
#

orig="$*"
args=''
: Remove any .a suffixes and any leading path components
for file in $orig ; do
        case "$file" in
           *.a)  file=`echo $file | sed 's/\.a//g'`
                 ;;
        esac
        case "$file" in
        ext/*)  file=`echo $file | sed 's:ext/\(.*\)/[^/]*:\1:'`
                ;;
        lib/auto/*)     file=`echo $file | sed 's:lib/auto/\(.*\)/[^/]*:\1:'`
                ;;
        */*)
                file=`expr X$file : 'X.*/\(.*\)'`
                ;;
        esac
        args="$args $file"
done


sed '/Do not delete this line--writemain depends on it/q' miniperlmain.c


if test X"$args" != "X" ; then
    for ext in $args ; do
: $ext will either be 'Name' or 'Name1/Name2' etc
: convert ext into cname and mname
mname=`echo $ext   | sed 's!/!::!g'`
cname=`echo $mname | sed 's!:!_!g'`

echo "EXTERN_C void boot_${cname} (pTHX_ CV* cv);"
    done
fi

cat << 'EOP'

static void
xs_init(pTHX)
{
EOP

if test X"$args" != "X" ; then
    echo "    const char file[] = __FILE__;"
    echo "    dXSUB_SYS;"

    ai=''

    for ext in $args ; do

        : $ext will either be 'Name' or 'Name1/Name2' etc
        : convert ext into cname and mname
        mname=`echo $ext   | sed 's!/!::!g'`
        cname=`echo $mname | sed 's!:!_!g'`

        if test "$ext" = "DynaLoader"; then
            : Must NOT install 'DynaLoader::boot_DynaLoader' as 'bootstrap'!
            : boot_DynaLoader is called directly in DynaLoader.pm
            echo "        newXS(\"${mname}::boot_${ext}\", boot_${cname}, (char *)file);"
        else
            echo "        newXS(\"${mname}::bootstrap\", boot_${cname}, (char *)file);"
        fi
    done
fi

cat << 'EOP'
}
EOP

!NO!SUBS!
chmod 755 writemain
$eunicefix writemain