perlhack update, by Steve Grazzini

[p5sagit/p5-mst-13.2.git] / hints / dec_osf.sh

diff --git a/hints/dec_osf.sh b/hints/dec_osf.sh
index 7706141..db4b147 100644 (file)
--- a/hints/dec_osf.sh
+++ b/hints/dec_osf.sh
@@ -69,13 +69,16 @@ esac
        # reset
        _DEC_cc_style=
 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
+gcc)   if [ "X$gccversion" = "X" ]; then
+           # Done too late in Configure if hinted
+           gccversion=`$cc --version | sed 's/.*(GCC) *//'`
+       fi
+       set $gccversion
+       if test "$1" -lt 2 -o \( "$1" -eq 2 -a \( "$2" -lt 95 -o \( "$2" -eq 95 -a "$3" -lt 3 \) \) \); then
            cat >&4 <<EOF
 
-*** Your cc seems to be gcc and its version ($_gcc_version) seems to be
-*** less than 2.95.2.  This is not a good idea since old versions of gcc
+*** Your cc seems to be gcc and its version ($gccversion) seems to be
+*** less than 2.95.3.  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).
 ***
@@ -145,6 +148,42 @@ case "$optimize" in
        ;;
 esac
 
+## Optimization limits
+case "$isgcc" in
+gcc) #  gcc 3.2.1 wants a lot of memory for -O3'ing toke.c
+cat >try.c <<EOF
+#include <sys/resource.h>
+
+int main ()
+{
+    struct rlimit rl;
+    int i = getrlimit (RLIMIT_DATA, &rl);
+    printf ("%d\n", rl.rlim_cur / (1024 * 1024));
+    } /* main */
+EOF
+$cc -o try $ccflags $ldflags try.c
+       maxdsiz=`./try`
+rm -f try try.c core
+if [ $maxdsiz -lt 256 ]; then
+    # less than 256 MB is probably not enough to optimize toke.c with gcc -O3
+    cat <<EOM >&4
+
+Your process datasize is limited to $maxdsiz MB, which is (sadly) not
+always enough to fully optimize some source code files of Perl,
+at least 256 MB seems to be necessary as of Perl 5.8.0.  I'll try to
+use a lower optimization level for those parts.  You could either try
+using your shell's ulimit/limit/limits command to raise your datasize
+(assuming the system-wide hard resource limits allow you to go higher),
+or if you can't go higher and if you are a sysadmin, and you *do* want
+the full optimization, you can tune the 'max_per_proc_data_size'
+kernel parameter: see man sysconfigtab, and man sys_attrs_proc.
+
+EOM
+toke_cflags='optimize=-O2'
+    fi
+;;
+esac
+
 # we want dynamic fp rounding mode, and we want ieee exception semantics
 case "$isgcc" in
 gcc)   ;;
@@ -264,9 +303,32 @@ cat > UU/usethreads.cbu <<'EOCBU'
 # after it has prompted the user for whether to use threads.
 case "$usethreads" in
 $define|true|[yY]*)
+       # In Tru64 V5 (at least V5.1A, V5.1B) gcc (at least 3.2.2)
+       # cannot be used to compile a threaded Perl.
+       cat > pthread.c <<EOF
+#include <pthread.h>
+extern int foo;        
+EOF
+       $cc -c pthread.c 2> pthread.err
+       if grep -q "unrecognized compiler" pthread.err; then
+           cat >&4 <<EOF
+***
+*** I'm sorry but your C compiler ($cc) cannot be used to
+*** compile Perl with threads.  The system C compiler should work.
+***
+
+Cannot continue, aborting.
+
+EOF
+           rm -f pthread.*
+           exit 1
+       fi
+       rm -f pthread.*
        # Threads interfaces changed with V4.0.
        case "$isgcc" in
-       gcc)    ccflags="-D_REENTRANT $ccflags" ;;
+       gcc)
+           ccflags="-D_REENTRANT $ccflags"
+           ;;
        *)  case "`uname -r`" in
            *[123].*)   ccflags="-threads $ccflags" ;;
            *)          ccflags="-pthread $ccflags" ;;
@@ -279,8 +341,13 @@ $define|true|[yY]*)
        esac
 
        case "$usemymalloc" in
-       '')
-               usemymalloc='n'
+       ''|'n') usemymalloc='n'
+               ;;
+       *)      # The FILLCHECK_DEADBEEF() are failing.
+               case "$ccflags" in
+               *-DFILL_CHECK_DEFAULT=*) ;;
+               *) ccflags="$ccflags -DFILL_CHECK_DEFAULT=0" ;;
+               esac
                ;;
        esac
        # These symbols are renamed in <time.h> so
@@ -354,14 +421,10 @@ case "`/usr/sbin/sizer -v`" in
 *[1-4].0*) d_modfl=undef ;; # must wait till 5.0
 esac
 
-# Keep those leading tabs.
-       needusrshlib=''
+# Keep that leading tab.
        old_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
 for p in $loclibpth
 do
-       if test -n "`ls $p/libdb.so* 2>/dev/null`"; then
-           needusrshlib=yes
-       fi
        if test -d $p; then
            echo "Appending $p to LD_LIBRARY_PATH." >& 4
            case "$LD_LIBRARY_PATH" in
@@ -374,14 +437,10 @@ case "$LD_LIBRARY_PATH" in
 "$old_LD_LIBRARY_PATH") ;;
 *) echo "LD_LIBRARY_PATH is now $LD_LIBRARY_PATH." >& 4 ;;
 esac
-# This is evil but I can't think of a nice workaround:
-# the /usr/shlib/libdb.so needs to be seen first,
-# or running Configure will fail.
-if test -n "$needusrshlib"; then
-    echo "Prepending /usr/shlib to loclibpth." >& 4
-    loclibpth="/usr/shlib $loclibpth"
-    echo "loclibpth is now $loclibpth." >& 4
-fi
+case "$LD_LIBRARY_PATH" in
+'') ;;
+* ) export LD_LIBRARY_PATH ;;
+esac
 
 #
 # Unset temporary variables no more needed.