# This example shows the most common most confusing aspect -- new shells
# are created for each command line.  Operations that work on the environment
# don't work as you might expect.

# The leading '@' means "don't print this command".
# Note: You can invoke make with the -s switch (for "silent running"), or
#       you can use the .SILENT: pseudo-target (deprecated), or you can
#       use '@'.

bug0:
	@export MYVAR="Setting MYVAR"
	echo MYVAR is \'$$MYVAR\'

bug1:
	@pwd
	@cd subdir
	@pwd

unbug0:
	export MYVAR="Setting MYVAR"; echo $$MYVAR

unbug1:
	pwd; cd subdir; pwd

# I want the recursive invocation that follows to work, no matter
# what this file is called.

THISFILE=$(word $(words ${MAKEFILE_LIST}),${MAKEFILE_LIST})

bugless0:
	export MYVAR="Invoked make recursively"; ${MAKE} -f ${THISFILE} bug0

clean:
	rm -f *~ *.o *.exe