if-conditionals

[Alexander.Farber]

Hi,

I have 3 questions related to if-conditionals:

1) I wonder, why are there never spaces after commas in 
   the manual, like for example here: ifeq ($(CC),gcc).
   Is it OK to put spaces after commas (I guess yes)?

2) How do you test for OR-conditions?

3) How do you search for a string, ignoring the case?

4) http://www.gnu.org/software/make/manual/html_node/make_77.html
   says "Extra spaces are allowed and ignored at the beginning 
   of the conditional directive line, but a tab is not allowed." 
   Does it mean the tab in front of "if" word or also in the 
   statements (i.e. may I indent the CXXFLAGS below)?

And here is my actuall problem - I have 3 cases:

1) If a EKERN is found in EXPORTLIBRARY *OR* (how?)
   KSRT found in TARGET (case-insensitive)

2) If ALWAYS_BUILD_AS_ARM equals 1

3) default

In the Makefile below I had to write the first case twice, 
because I don't know, how to make an OR-conditional.
And still it doesn't work if the case doesn't match.
What should I do here? Test for eKERN, ekERN, etc. ??

bolinux72:make-test {75} cat Makefile 
ALWAYS_BUILD_AS_ARM     = 1
EXPORTLIBRARY           = /blah/EKERN/blah
TARGET                  = ksrt.lib

ifeq (EKERN, $(findstring EKERN, $(EXPORTLIBRARY)))
CXXFLAGS = --arm --no_exceptions --no_exceptions_unwind
else
ifeq (KSRT, $(findstring KSRT, $(TARGET)))
CXXFLAGS = --arm --no_exceptions --no_exceptions_unwind
else
ifeq (1, $(ALWAYS_BUILD_AS_ARM))
CXXFLAGS = --arm --fpu softvfp --exceptions --exceptions_unwind
else
CXXFLAGS = --thumb --fpu softvfp --exceptions --exceptions_unwind 
-D__MARM_THUMB__
endif
endif
endif

$(warning $(CXXFLAGS))

all:

bolinux72:make-test {76} gmake EXPORTLIBRARY=/blah/ekern/blah
Makefile:19: --arm --fpu softvfp --exceptions --exceptions_unwind
gmake: Nothing to be done for `all'.

Regards
Alex

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