[Rd] configure doesn't find perl 5 on suse 7.2

[Peter Dalgaard BSA]

Albrecht Gebhardt <albrecht.gebhardt@uni-klu.ac.at> writes:

> R-devel:
> 
> ./configure doesn't find perl 5 on a SuSE 7.2 system wit perl 5.6.0
> installed:

> this is the output of perl -v:
> ###################################################################
> omega:/usr/src/packages/BUILD-omega/R-devel # /usr/bin/perl -v
> 
> This is perl, v5.6.0 built for i586-linux
> 
> Copyright 1987-2000, Larry Wall
> 
> Perl may be copied only under the terms of either the Artistic License or
> the
> GNU General Public License, which may be found in the Perl 5.0 source kit.
> 
> Complete documentation for Perl, including FAQ lists, should be found on
> this system using `man perl' or `perldoc perl'.  If you have access to the
> Internet, point your browser at http://www.perl.com/, the Perl Home Page.
> #########################################################################
> 
> the perl version check in the configurte script 
> /usr/bin/perl -v | sed -n 's/^.*perl.*version \(.\).*/\1/p'
> clearly fails, but e.g.
> /usr/bin/perl -v | sed -n 's/^.*perl.*v\([0-9]\).*/\1/p'
> would work.
> 
> Finally
> 
> usr/bin/perl -v | \
>   sed -n 's/^.*perl.*v\([0-9]\).*/\1/p;s/^.*perl.*version \(.\).*/\1/p'
> 
> works on systems with a perl version of "perl, v5.xxx" and "perl, version
> 5.xxx" 

???

What version of R is that? To my knowledge we haven't used the
sed-based check for perl versions for more than a year:

revision 1.37
date: 2000/04/07 13:24:08;  author: pd;  state: Exp;  lines: +12 -8
fixup perl5 test
----------------------------
revision 1.36
date: 2000/04/07 06:07:59;  author: hornik;  state: Exp;  lines: +2 -3
Improve test for Perl version 5.
----------------------------

and

[pd@butterfly R]$ cvs diff -ur 1.35 -r1.37 aclocal.m4
Index: aclocal.m4
===================================================================
RCS file: /home/rdevel/CVS-ARCHIVE/R/aclocal.m4,v
retrieving revision 1.35
retrieving revision 1.37
diff -u -r1.35 -r1.37
--- aclocal.m4  2000/04/02 14:24:56     1.35
+++ aclocal.m4  2000/04/07 13:24:08     1.37
@@ -46,19 +46,22 @@
 dnl
 dnl R_PROG_PERL
 dnl
+changequote(<<, >>)dnl
+define(PERL5_CHECK,
+<<
+  if ${PERL} -e 'exit 1 if $]<5'
+  then
+    r_cv_prog_perl_v5=yes
+  else
+    r_cv_prog_perl_v5=no
+  fi
+>>)
+changequote([, ]) dnl
 AC_DEFUN(R_PROG_PERL,
  [AC_PATH_PROG(PERL, perl)
   if test -n "${PERL}"; then
     AC_CACHE_CHECK([whether perl version is at least 5],
-      r_cv_prog_perl_v5,
-      [ perl_version=`${PERL} -v | \
-         sed -n 's/^.*perl.*version \(.\).*/\1/p'`
-       if test ${perl_version} -ge 5; then
-         r_cv_prog_perl_v5=yes
-       else
-         r_cv_prog_perl_v5=no
-       fi
-      ])
+      r_cv_prog_perl_v5, [PERL5_CHECK()] )
   else
     PERL=false
   fi


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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