findstring & ifeq

[Ken Mankoff]

Hi List,

I have a bunch of sources I'm trying to compile... All .f files, but 
about 50% use one command and 50% use another...

I'm trying to do conditional compilation using findstring and ifeq 
in the makefile, but having errors. Can anyone advise how to best do 
this?

The problem I am having is with a simple 'ifeq' command the logic 
works (like the example in the manual here) but if I nest a 
$(findstring) in the $(ifeq) then no matter what the rule is true...

# this works:
ifeq ("foo","foo")
     @echo here
endif

# this works too (nothing printed)
ifeq ("foo","bar")
    @echo here
endif

# this works too... If I touch a file in the OBJ list it echos
# the filename if I touch a file NOT in the OBJ list, it echos
# a blank line
%.o: %.f
        @echo $(findstring $@,$(OBJ))



# So... why doesn't this work?
%.o: %.f
ifeq ($(findstring $@,$(OBJ)),)
        @echo not found
else
        @echo found
endif


The Makefile I'm testing is below.

Thanks,

   -k.


FC=xlf
FCMP=xlf_r
FFLAGS=-O2 -qmaxmem=-1 -qalias=nostd -qsave -qfloat=strictnmaf -c
FFLAGSMP=-qsmp=omp $(FFLAGS)

# these are single processor source files
SRC = f0.f, f1.f, f2.f, etc...
# these are SMP (distributed)
SRCMP = f0mp.f, f1mp.f, f2mp.f, etc...
# except in reality the filenames are long and complex and I cannot
# just search for the word "mp" in the filename...

OBJ=$(SRC:.f=.o)
OBJMP=$(SRCMP:.f=.o)

SRCS = $(SRC) $(SRCMP) # all sources
OBJS = $(OBJ) $(OBJMP) # all objects

all: foo

foo: $(OBJS)
#       ./compile.sh

%.o: %.f
ifeq ($(findstring $@,$(OBJ)),$@)
        # search in OBJ (not OBJS or OBJMP) for this file.
        @echo single processor
        $(FC) $(FFLAGS) $<
else
        @echo dual processor
        $(FCMP) $(FFLAGSMP) $<
endif