#!/bin/sh

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

: ${DMAKEPROG:=dmake}
file1="makefile.mk"
tmpfiles="$file1"

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

trap 'rm -rf $tmpfiles' 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" && rm -f ${tmpfiles}
test $result1 -ne 0 && echo "Failure!"
exit $result1