add perlcompile.pod (edited content from Nathan Torkington

[p5sagit/p5-mst-13.2.git] / Configure

diff --git a/Configure b/Configure
index 24bea65..4b55fa6 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -20,7 +20,7 @@
 
 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
 #
-# Generated on Mon Aug 16 22:35:18 EET DST 1999 [metaconfig 3.0 PL70]
+# Generated on Mon Aug 30 22:33:03 EET DST 1999 [metaconfig 3.0 PL70]
 # (with additional metaconfig patches by perlbug@perl.com)
 
 cat >/tmp/c1$$ <<EOF
@@ -3543,7 +3543,7 @@ privlib="$ans"
 privlibexp="$ansexp"
 : Change installation prefix, if necessary.
 if $test X"$prefix" != X"$installprefix"; then
-       installprivlib=`echo $privlibexp | sed 's#^$prefix#$installprefix#'`
+       installprivlib=`echo $privlibexp | sed "s#^$prefix#$installprefix#"`
 else
        installprivlib="$privlibexp"
 fi
@@ -3588,7 +3588,7 @@ else
 fi
 : Change installation prefix, if necessary.
 if $test X"$prefix" != X"$installprefix"; then
-       installarchlib=`echo $archlibexp | sed 's#^$prefix#$installprefix#'`
+       installarchlib=`echo $archlibexp | sed "s#^$prefix#$installprefix#"`
 else
        installarchlib="$archlibexp"
 fi
@@ -4151,7 +4151,7 @@ none) libs=' ';;
 *) libs="$ans";;
 esac
 
-: determine optimize, if desired, or use for debug flag also
+: determine optimization, if desired, or use for debug flag also
 case "$optimize" in
 ' '|$undef) dflt='none';;
 '') dflt='-O';;
@@ -4159,11 +4159,10 @@ case "$optimize" in
 esac
 $cat <<EOH
 
-Some C compilers have problems with their optimizers.  By default, $package
-compiles with the -O flag to use the optimizer.  Alternately, you might want
-to use the symbolic debugger, which uses the -g flag (on traditional Unix
-systems).  Either flag can be specified here.  To use neither flag, specify
-the word "none".
+By default, $package compiles with the -O flag to use the optimizer.
+Alternately, you might want to use the symbolic debugger, which uses
+the -g flag (on traditional Unix systems).  Either flag can be
+specified here.  To use neither flag, specify the word "none".
 
 EOH
 rp="What optimizer/debugger flag should be used?"
@@ -4177,7 +4176,7 @@ dflt=''
 : We will not override a previous value, but we might want to
 : augment a hint file
 case "$hint" in
-none|recommended)
+default|recommended)
        case "$gccversion" in
        1*) dflt='-fpcc-struct-return' ;;
        esac
@@ -4192,6 +4191,25 @@ none|recommended)
                fi
                ;;
        esac
+       case "$gccversion" in
+       1*) ;;
+       2.[0-8]*) ;;
+       *)      echo " "
+               echo "Checking if your compiler accepts -fno-strict-aliasing" 2>&1
+               echo 'int main(void) { return 0; }' > gcctest.c
+               if $cc -O2 -fno-strict-aliasing -o gcctest gcctest.c; then
+                       echo "Yes, it does." 2>&1
+                       case "$ccflags" in
+                       *strict-aliasing*) 
+                               echo "Leaving current flags $ccflags alone." 2>&1
+                               ;;
+                       *) dflt="$dflt -fno-strict-aliasing" ;;
+                       esac
+               else
+                       echo "Nope, it doesn't, but that's ok." 2>&1
+               fi
+               ;;
+       esac
        ;;
 esac
 
@@ -4233,7 +4251,7 @@ $define)
 esac
 
 case "$hint" in
-none|recommended) dflt="$ccflags $dflt" ;;
+default|recommended) dflt="$ccflags $dflt" ;;
 *) dflt="$ccflags";;
 esac
 
@@ -4698,7 +4716,7 @@ case "$vendorprefix" in
        vendorlibexp="$ansexp"
        : Change installation prefix, if necessary.
        if $test X"$prefix" != X"$installprefix"; then
-               installvendorlib=`echo $vendorlibexp | $sed 's#^$prefix#$installprefix#'`
+               installvendorlib=`echo $vendorlibexp | $sed "s#^$prefix#$installprefix#"`
        else
                installvendorlib="$vendorlibexp"
        fi
@@ -4761,7 +4779,7 @@ binexp="$ansexp"
 : Change installation prefix, if necessary.
 : XXX Bug? -- ignores Configure -Dinstallprefix setting.
 if $test X"$prefix" != X"$installprefix"; then
-       installbin=`echo $binexp | sed 's#^$prefix#$installprefix#'`
+       installbin=`echo $binexp | sed "s#^$prefix#$installprefix#"`
 else
        installbin="$binexp"
 fi
@@ -5743,7 +5761,7 @@ esac
 
 : Change installation prefix, if necessary.
 if $test X"$prefix" != X"$installprefix"; then
-       installman1dir=`echo $man1direxp | $sed 's#^$prefix#$installprefix#'`
+       installman1dir=`echo $man1direxp | $sed "s#^$prefix#$installprefix#"`
 else
        installman1dir="$man1direxp"
 fi
@@ -5886,7 +5904,7 @@ esac
 
 : Change installation prefix, if necessary.
 if $test X"$prefix" != X"$installprefix"; then
-       installman3dir=`echo $man3direxp | $sed 's#^$prefix#$installprefix#'`
+       installman3dir=`echo $man3direxp | $sed "s#^$prefix#$installprefix#"`
 else
        installman3dir="$man3direxp"
 fi
@@ -6318,7 +6336,7 @@ scriptdir="$ans"
 scriptdirexp="$ansexp"
 : Change installation prefix, if necessary.
 if $test X"$prefix" != X"$installprefix"; then
-       installscript=`echo $scriptdirexp | sed 's#^$prefix#$installprefix#'`
+       installscript=`echo $scriptdirexp | sed "s#^$prefix#$installprefix#"`
 else
        installscript="$scriptdirexp"
 fi
@@ -6383,7 +6401,7 @@ sitelib="$ans"
 sitelibexp="$ansexp"
 : Change installation prefix, if necessary.
 if $test X"$prefix" != X"$installprefix"; then
-       installsitelib=`echo $sitelibexp | sed 's#^$prefix#$installprefix#'`
+       installsitelib=`echo $sitelibexp | sed "s#^$prefix#$installprefix#"`
 else
        installsitelib="$sitelibexp"
 fi
@@ -6413,7 +6431,7 @@ sitearch="$ans"
 sitearchexp="$ansexp"
 : Change installation prefix, if necessary.
 if $test X"$prefix" != X"$installprefix"; then
-       installsitearch=`echo $sitearchexp | sed 's#^$prefix#$installprefix#'`
+       installsitearch=`echo $sitearchexp | sed "s#^$prefix#$installprefix#"`
 else
        installsitearch="$sitearchexp"
 fi