testing if a file exists

[Kris Thielemans]

Hi,

I have a makefile which tests if a certain file exists. If so, it will
compile more files. Could anyone recommended me a way of doing this? Maybe
with $(wildcard..) or so? At the moment I do it as follows

__TEST_LLN:=$(shell if [ -r matrix.h ]; then echo 1;  fi)
ifeq ($(__TEST_LLN),1)
  SOURCES += ifheaders_for_ecat7.cxx
endif

This would break though if somebody changed SHELL.

Thanks,

Kris Thielemans
(kris.thielemans <at> ic.ac.uk)
Imaging Research Solutions Ltd
Cyclotron Building
Hammersmith Hospital
Du Cane Road
London W12 ONN, United Kingdom

web site address: http://www.irsl.org/~kris