R correct g77 flags for Linux/Alpha (PR#208)

[Kurt Hornik]

>>>>> ntakebay  writes:

> Hello,
> I was trying to compile R-base-0.64.1 on Linux/Alpha (RedHat 6.0).

> It compiled but it couldn't pass the make check (choked with
> tests/Examples/modreg-Ex.R).

> I used gdb, and it turned out that the src/library/modreg/src/sinerp.f was
> the problem.
>          else if(j.eq.nk)then
>             c1 = 0d0
>             c2 = 0d0
>             c3 = 0d0
>          endif
>> p1ip(1,j) = 0d0- (c1*wjm3(1)+c2*wjm3(2)+c3*wjm3(3))
>          p1ip(2,j) = 0d0- (c1*wjm3(2)+c2*wjm2(1)+c3*wjm2(2))

> I think wjm3(3) should be 0, but it was set to a really tiny value.

> So I gave -mieee for g77, and it solved the problem.

> The configure correctly identify the CFLAGS for alpha, but -mieee should
> be given to g77, too.  So in configure.in and configure, you should add
> the following (I included a patch below)

> By the way, I compiled R on PC164SX + 21164PC/533 using egcs-1.1.2.  All
> other libraries are Redhat-6.0 default.

> --- R-0.64.1/configure.in.orig  Tue Jun  8 19:05:31 1999
> +++ R-0.64.1/configure.in       Tue Jun  8 19:06:28 1999
> @@ -575,6 +575,7 @@
>      ;;
>    alpha*linux)
>      CFLAGS="-mieee ${CFLAGS}"
> +    FFLAGS="-mieee ${FFLAGS}"
>      DLLFLAGS=-export-dynamic
>      ;;
>    *linuxaout)

Done for 0.65.

-k
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