source: PSPA/madxPSPA/make/make.lib @ 447

# |
# o---------------------------------------------------------------------o
# |
# | MAD makefile - utilities
# |
# o---------------------------------------------------------------------o
# |
# | Methodical Accelerator Design
# |
# | Copyright (c) 2011+ CERN, mad@cern.ch
# |
# | For more information, see http://cern.ch/mad
# |
# o---------------------------------------------------------------------o
# |
# | $Id$
# |

# some useful variables
EMPTY :=
SPACE := 
SPACE +=

# some useful functions
eq     = $(if $(patsubst $1,,$2),,t)
neq    = $(if $(patsubst $1,,$2),t,)

escsp  = $(subst $(SPACE),\ ,$1)

first  = $(word 1,$1)
last   = $(word $(words $1),$1)
rest   = $(wordlist 2,$(words $1),$1)
chop   = $(wordlist 2,$(words $1),_ $1)
uniq   = $(strip $(if $1,$(call uniq,$(call chop,$1)) \
            $(if $(filter $(call last,$1),$(call chop,$1)),,$(call last,$1))))
trans  = $(if $1,$(call trans,$(call rest,$1),$(call rest,$2)\
                    ,$(patsubst $(firstword $1),$(firstword $2),$3)),$3) 
find   = $(if $(and $1,$2),$(if $(findstring $1,$(firstword $2)),$2,\
              $(call find,$1,$(call rest,$2))),)
trunc  = $(if $(and $1,$2),$(if $(findstring $1,$(lastword $2)),$2,\
              $(call trunc,$1,$(call chop,$2))),)

assert = $(if $1,,$(error $2))
exists = $(if $(wildcard $1),,$(error $2))
mkdir  = $(if $(wildcard $1),,$(shell mkdir $(if $(windir),,-p) $1))

# end of makefile