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

[ntakebay@bio.indiana.edu]

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)



To the rpm maintainer: You can simply apply the following patch to the
spec file of R-base-0.64.1-5.src.rpm without patching the configure.in
patch.  I also do not know why CFLAGS need to be -O1 instead of -O2??

--- R-base.spec.orig    Tue Jun  8 18:39:31 1999
+++ R-base.spec Tue Jun  8 18:44:00 1999
@@ -70,6 +70,7 @@
 %ifarch alpha
    #Thanks to Nassib Nassar <nassar@etymon.com>
    export CFLAGS="-g -O1"
+   export FFLAGS="-mieee -g -O2"
 %endif
 %ifarch sparc
    export LIBS="-lieee"

Thanks,
Naoki

Naoki Takebayashi     <ntakebay@bio.indiana.edu>
--- Dept. of Biology, Indiana Univeristy, Jordan Hall 142
--- 1001 E. Third St. Bloomington,IN 47405-3700 USA


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