Make VMS use IEEE math by default; reorder Tru64 hints

so that -fprm d -ieee (the -ieee gives as e.g. IEEE 754
exception semantics) is always set if using (the new) cc.

p4raw-id: //depot/perl@11613

diff --git a/configure.com b/configure.com
index 43cce9f..a4ff660 100644 (file)
--- a/configure.com
+++ b/configure.com
@@ -41,7 +41,7 @@ $ ans = ""
 $ macros = ""
 $ extra_flags = ""
 $ user_c_flags = ""
-$ use_ieee_math = "n"
+$ use_ieee_math = "y"
 $ be_case_sensitive = "n"
 $ use_vmsdebug_perl = "n"
 $ use64bitall = "n"

diff --git a/hints/dec_osf.sh b/hints/dec_osf.sh
index 8bf043f..134a3aa 100644 (file)
--- a/hints/dec_osf.sh
+++ b/hints/dec_osf.sh
@@ -60,12 +60,16 @@
 
 cc=${cc:-cc}
 
+case "`$cc -v 2>&1 | grep cc`" in
+*gcc*) isgcc=gcc ;;
+esac
+
 # do NOT, I repeat, *NOT* take away the leading tabs
 # Configure Black Magic (TM)
        # reset
        _DEC_cc_style=
-case "`$cc -v 2>&1 | grep cc`" in
-*gcc*) _gcc_version=`$cc --version 2>&1 | tr . ' '`
+case "$isgcc" in
+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
@@ -116,8 +120,8 @@ EOF
 esac
 
 # be nauseatingly ANSI
-case "`$cc -v 2>&1 | grep gcc`" in
-*gcc*) ccflags="$ccflags -ansi"
+case "$isgcc" in
+gcc)   ccflags="$ccflags -ansi"
        ;;
 *)     ccflags="$ccflags -std"
        ;;
@@ -129,13 +133,10 @@ esac
 # we want optimisation
 
 case "$optimize" in
-'')    case "`$cc -v 2>&1 | grep gcc`" in
-       *gcc*)  
-               optimize='-O3'                          ;;
+'')    case "$isgcc" in
+       gcc)    optimize='-O3'                          ;;
        *)      case "$_DEC_cc_style" in
-               new)    optimize='-O4'
-                       ccflags="$ccflags -fprm d -ieee"
-                       ;;
+               new)    optimize='-O4'                  ;;
                old)    optimize='-O2 -Olimit 3200'     ;;
                esac
                ccflags="$ccflags -D_INTRINSICS"
@@ -144,6 +145,14 @@ case "$optimize" in
        ;;
 esac
 
+# we want dynamic fp rounding mode, and we want ieee exception semantics
+case "$isgcc" in
+gcc)   case "$_DEC_cc_style" in
+       new)    ccflags="$ccflags -fprm d -ieee"        ;;
+       esac
+       ;;
+esac
+
 # Make glibpth agree with the compiler suite.  Note that /shlib
 # is not here.  That's on purpose.  Even though that's where libc
 # really lives from V4.0 on, the linker (and /sbin/loader) won't
@@ -255,8 +264,8 @@ cat > UU/usethreads.cbu <<'EOCBU'
 case "$usethreads" in
 $define|true|[yY]*)
        # Threads interfaces changed with V4.0.
-       case "`$cc -v 2>&1 | grep gcc`" in
-       *gcc*)ccflags="-D_REENTRANT $ccflags" ;;
+       case "$isgcc" in
+       gcc)    ccflags="-D_REENTRANT $ccflags" ;;
        *)  case "`uname -r`" in
            *[123].*)   ccflags="-threads $ccflags" ;;
            *)          ccflags="-pthread $ccflags" ;;