#!/bin/sh

# 22.07.2006 Volker Quetschke
# Verifies that $(nil expression) expand expression but returns "".
# (issue 67585)

: ${DMAKEPROG:=dmake}
file1="makefile.mk"
tmpfiles="$file1"
STARTDIR="`pwd`"; WORKDIR="$0-OUTPUT"
CLEANUP="eval (cd $STARTDIR; rm -rf $WORKDIR)"
$CLEANUP # Zap remnants of any failed run
mkdir "$WORKDIR"; cd "$WORKDIR"

trap "{ echo 'trapped signal - removing temporary files' ; $CLEANUP ; }" 1 2 3 15

# Remember to quote variables in generated makefiles( $ -> \$ ).
cat > $file1 <<EOT
# Testing nil function macro
SHELL*:=/bin/sh 
SHELLFLAGS*:=-ce

all : dep
	@+echo "X\$(AAA)X"

dep :
	\$(nil \$(assign AAA := OK))

EOT

output1=`eval ../${DMAKEPROG} -rf $file1 2>&1 `
result1=$?

if test $output1 = "XOKX" ; then
  dummy=1
  # OK
else
  echo "Wrong result: $output1"
  result1=1
fi

test $result1 -eq 0 && echo "Success - Cleaning up" && $CLEANUP
test $result1 -ne 0 && echo "Failure!"
exit $result1
