From: Jarkko Hietaniemi <jhi@iki.fi>
Date: Wed, 8 Aug 2001 13:22:13 +0000 (+0000)
Subject: Make VMS use IEEE math by default; reorder Tru64 hints
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=6c7aff00377b827ccc6e918bdb59169ef553af97;p=p5sagit%2Fp5-mst-13.2.git

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
--- 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
--- 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" ;;