Re: if-conditionals

[Noel Yap]

address@hidden wrote:

> 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)?

Spaces are allowed but depending on what you want, it may not be the correct 
thing to do; they are used as part of the match.

> 2) How do you test for OR-conditions?

ifneq ($(if $(a-condition),1)$(if $(another-condition),1),)
endif

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

Create a user function like to-lower and compare the output of that.

> 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)?

Tabs should only exist within actions.

Sorry, I don't have time to go through your makefile but hopefully the above is 
enough to go on.

BTW, to use user functions, you'll need 3.80 or above.

HTH,
Noel