Re: Less warnings during configure

Message-Id: <20010509125337.995D.H.M.BRAND@hccnet.nl>

p4raw-id: //depot/perl@10046

diff --git a/hints/hpux.sh b/hints/hpux.sh
index ebb70ea..59dcdbf 100644 (file)
--- a/hints/hpux.sh
+++ b/hints/hpux.sh
@@ -177,6 +177,35 @@ EOM
 
 ### COMPILER SPECIFICS
 
+## Local restrictions (point to README.hpux to lift these)
+
+## Optimization limits
+cat >try.c <<EOF
+#include <sys/resource.h>
+
+int main ()
+{
+    struct rlimit rl;
+    int i = getrlimit (RLIMIT_DATA, &rl);
+    printf ("%d\n", rl.rlim_cur / (1024 * 1024));
+    } /* main */
+EOF
+$cc -o try $ccflags $ldflags try.c
+       maxdsiz=`try`
+if [ $maxdsiz -le 64 ]; then
+    # 64 Mb is probably not enough to optimize toke.c
+    # and regexp.c with -O2
+    cat <<EOM >&4
+Your kernel limits the data section of your programs to $maxdsiz Mb,
+which is (sadly) not enough to fully optimize some parts of the
+perl binary. I'll try to use a lower optimization level for
+those parts. If you are a sysadmin, and you *do* want full
+optimization, raise the 'maxdsiz' kernel configuration parameter
+to at least 0x08000000 (128 Mb) and rebuild your kernel.
+EOM
+    exit
+    fi
+
 case "$ccisgcc" in
     $define|true|[Yy])
        
@@ -202,6 +231,16 @@ case "$ccisgcc" in
                    esac
                ;;
            esac
+       if [ $maxdsiz -le 64 ]; then
+           # 64 Mb is probably not enough to optimize toke.c
+           # and regexp.c with -O2
+           case "$optimize" in
+               *O2*)   opt=`echo "$optimize" | sed -e 's/O2/O1/'`
+                       toke_cflags="$ccflags $opt"
+                       regexec_cflags="$ccflags $opt"
+                       ;;
+               esac
+           fi
        ;;
 
     *) # HP's compiler cannot combine -g and -O
@@ -209,6 +248,17 @@ case "$ccisgcc" in
            "")           optimize="+O2 +Onolimit" ;;
            *O[3456789]*) optimize=`echo "$optimize" | sed -e 's/O[3-9]/O2/'` ;;
            esac
+       if [ $maxdsiz -le 64 ]; then
+           # 64 Mb is probably not enough to optimize toke.c
+           # and regexp.c with -O (+O2)
+           case "$optimize" in
+               *-O*|\
+               *O2*)   opt=`echo "$optimize" | sed -e 's/-O/+O2/' -e 's/O2/O1/' -e 's/ *+Onolimit//'`
+                       toke_cflags="$ccflags $opt"
+                       regexec_cflags="$ccflags $opt"
+                       ;;
+               esac
+           fi
        ld=/usr/bin/ld
        cccdlflags='+Z'
        lddlflags='-b +vnocompatwarnings'