Disable long doubles from pre-5.0 Tru64s.

[perl5.git] / hints / dec_osf.sh

diff --git a/hints/dec_osf.sh b/hints/dec_osf.sh
index 5eb7e80..71bc05f 100644 (file)
--- a/hints/dec_osf.sh
+++ b/hints/dec_osf.sh
@@ -65,10 +65,44 @@ cc=${cc:-cc}
        # reset
        _DEC_cc_style=
 case "`$cc -v 2>&1 | grep cc`" in
-*gcc*) ;; # pass
+*gcc*) _gcc_version=`$cc --version 2>&1 | tr . ' '`
+       set $_gcc_version
+       if test "$1" -lt 2 -o \( "$1" -eq 2 -a \( "$2" -lt 95 -o \( "$2" -eq 95 -a "$3" -lt 2 \) \) \); then
+           cat >&4 <<EOF
+
+*** Your cc seems to be gcc and its version ($_gcc_version) seems to be
+*** less than 2.95.2.  This is not a good idea since old versions of gcc
+*** are known to produce buggy code when compiling Perl (and no doubt for
+*** other programs, too).
+***
+*** Therefore, I strongly suggest upgrading your gcc.  (Why don't you use
+*** the vendor cc is also a good question.  It comes with the operating
+*** system and produces good code.)
+
+Cannot continue, aborting.
+
+EOF
+           exit 1
+       fi
+       if test "$1" -eq 2 -a "$2" -eq 95 -a "$3" -le 2; then
+           cat >&4 <<EOF
+
+*** Note that as of gcc 2.95.2 (19991024) and Perl 5.6.0 (March 2000)
+*** if the said Perl is compiled with the said gcc the lib/sdbm test
+*** may dump core (meaning that the SDBM_File extension is unusable).
+*** As this core dump never happens with the vendor cc, this is most
+*** probably a lingering bug in gcc.  Therefore unless you have a better
+*** gcc installation you are still better off using the vendor cc.
+
+Since you explicitly chose gcc, I assume that you know what are doing.
+
+EOF
+       fi
+        ;;
 *)     # compile something small: taint.c is fine for this.
+       ccversion=`cc -V | awk '/(Compaq|DEC) C/ {print $3}'`
        # the main point is the '-v' flag of 'cc'.
-               case "`cc -v -I. -c taint.c -o /tmp/taint$$.o 2>&1`" in
+               case "`cc -v -I. -c taint.c -o taint$$.o 2>&1`" in
        */gemc_cc*)     # we have the new DEC GEM CC
                        _DEC_cc_style=new
                        ;;
@@ -77,7 +111,7 @@ case "`$cc -v 2>&1 | grep cc`" in
                        ;;
        esac
        # cleanup
-       rm -f /tmp/taint$$.o
+       rm -f taint$$.o
        ;;
 esac
 
@@ -151,7 +185,7 @@ case "`uname -r`" in
 *)            if $test "X$optimize" = "X$undef"; then
                       lddlflags="$lddlflags -msym"
               else
-                 case "`sizer -v`" in
+                 case "`/usr/sbin/sizer -v`" in
                  *4.0D*)
                      # QAR 56761: -O4 + .so may produce broken code,
                      # fixed in 4.0E or better.
@@ -162,7 +196,7 @@ case "`uname -r`" in
                  esac
                  # -msym: If using a sufficiently recent /sbin/loader,
                  # keep the module symbols with the modules.
-                  lddlflags="$lddlflags -msym"
+                  lddlflags="$lddlflags -msym -std"
               fi
                ;;
 esac
@@ -202,13 +236,22 @@ esac
 # please adjust this appropriately.  See also pp_sys.c just before the
 # emulate_eaccess().
 
+# Fixed in V5.0A.
+case "`/usr/sbin/sizer -v`" in
+*5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*)
+       : ok
+       ;;
+*)
+# V5.0 or previous
 pp_sys_cflags='ccflags="$ccflags -DNO_EFF_ONLY_OK"'
+       ;;
+esac
 
 # The off_t is already 8 bytes, so we do have largefileness.
 
+cat > UU/usethreads.cbu <<'EOCBU'
 # This script UU/usethreads.cbu will get 'called-back' by Configure 
 # after it has prompted the user for whether to use threads.
-cat > UU/usethreads.cbu <<'EOCBU'
 case "$usethreads" in
 $define|true|[yY]*)
        # Threads interfaces changed with V4.0.
@@ -225,11 +268,42 @@ $define|true|[yY]*)
        *)        libswanted="$libswanted pthread exc" ;;
        esac
 
-        usemymalloc='n'
+       case "$usemymalloc" in
+       '')
+               usemymalloc='n'
+               ;;
+       esac
        ;;
 esac
 EOCBU
 
+cat > UU/uselongdouble.cbu <<'EOCBU'
+# This script UU/uselongdouble.cbu will get 'called-back' by Configure 
+# after it has prompted the user for whether to use long doubles.
+case "$uselongdouble" in
+$define|true|[yY]*)
+       case "`/usr/sbin/sizer -v`" in
+       *[1-4].0*)      cat >&4 <<EOF
+
+***
+*** Sorry, you cannot use long doubles in pre-V5.0 releases of Tru64.
+***
+
+Cannot continue, aborting.
+
+EOF
+               exit 1
+               ;;
+       esac
+       d_Gconvert='sprintf((b),"%.*Lg",(n),(x))'
+       ;;
+esac
+EOCBU
+
+case "`/usr/sbin/sizer -v`" in
+*[1-4].0*) d_modfl=undef ;; # must wait till 5.0
+esac
+
 #
 # Unset temporary variables no more needed.
 #