Re: Nested AS_IF calls

[Peter Breitenlohner]

On Thu, 7 Jun 2012, Adam Mercer wrote:

> And I'm trying to use AS_IF instead, I've been reading to
> documentation[1], and have come up with the following:
>
> AS_IF([test "$GCC" = yes],[
>  [AS_IF([test "`$CC -v 2>&1 | grep -c 'clang_version'`" != "0"],[CLANG_CC=1])],
>  [CLANG_CC=])
>
> but it doesn't seem to be working, ...

Hi Adam,

according to the Autoconf manual (8.1 M4 Quotation) that should be

AS_IF([test "$GCC" = yes],
  [AS_IF([test "`$CC -v 2>&1 | grep -c 'clang_version'`" != "0"],[CLANG_CC=1])],
  [CLANG_CC=])

i.e., exactly one level of quotes for each macro argument.  In addition it
might be safer to replace
  test "$GCC" = yes
by
  test "X$GCC" = Xyes
and similar.

Regards
Peter Breitenlohner <address@hidden>