# 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).
***
;;
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) ;;
# the basic lddlflags used always
lddlflags='-shared -expect_unresolved "*"'
+# Intentional leading tab.
+ myosvers="`/usr/sbin/sizer -v 2>/dev/null || uname -r`"
+
# Fancy compiler suites use optimising linker as well as compiler.
# <spider@Orb.Nashua.NH.US>
case "`uname -r`" in
*) if $test "X$optimize" = "X$undef"; then
lddlflags="$lddlflags -msym"
else
- case "`/usr/sbin/sizer -v`" in
+ case "$myosvers" in
*4.0D*)
# QAR 56761: -O4 + .so may produce broken code,
# fixed in 4.0E or better.
# Yes, the above loses if gcc does not use the system linker.
# If that happens, let me know about it. <jhi@iki.fi>
+# Because there is no other handy way to recognize 3.X.
+case "`uname -r`" in
+*3.*) ccflags="$ccflags -DDEC_OSF1_3_X" ;;
+esac
# If debugging or (old systems and doing shared)
# then do not strip the lib, otherwise, strip.
# emulate_eaccess().
# Fixed in V5.0A.
-case "`/usr/sbin/sizer -v`" in
+case "$myosvers" in
*5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*)
: ok
;;
# after it has prompted the user for whether to use threads.
case "$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 $ccflags" ;;
usemymalloc='n'
;;
esac
+ # These symbols are renamed in <time.h> so
+ # that the Configure hasproto doesn't see them.
+ d_asctime_r_proto="$define"
+ d_ctime_r_proto="$define"
+ d_gmtime_r_proto="$define"
+ d_localtime_r_proto="$define"
;;
esac
EOCBU
+# malloc wrap works
+case "$usemallocwrap" in
+'') usemallocwrap='define' ;;
+esac
+
cat > UU/uselongdouble.cbu <<'EOCBU'
# This script UU/uselongdouble.cbu will get 'called-back' by Configure
# after it has prompted the user for whether to use long doubles.
case "$uselongdouble" in
$define|true|[yY]*)
- case "`/usr/sbin/sizer -v`" in
+ case "$myosvers" in
*[1-4].0*) cat >&4 <<EOF
***
EOF
exit 1
;;
+ *)
+ # Test whether libc's been fixed yet.
+ cat >try.c <<\TRY
+#include <stdio.h>
+int main(int argc, char **argv)
+{
+ unsigned long uvmax = ~0UL;
+ long double ld = uvmax + 0.0L;
+ char buf1[30], buf2[30];
+
+ (void) sprintf(buf1, "%lu", uvmax);
+ (void) sprintf(buf2, "%.0Lf", ld);
+ return strcmp(buf1, buf2) != 0;
+}
+TRY
+ # Don't bother trying to work with Configure's idea of
+ # cc and the various flags. This might not work as-is
+ # with gcc -- but we're testing libc, not the compiler.
+ if cc -o try -std try.c && ./try
+ then
+ : ok
+ else
+ cat <<\UGLY >&4
+!
+Warning! Your libc has not yet been patched so that its "%Lf" format for
+printing long doubles shows all the significant digits. You will get errors
+in the t/op/numconvert test because of this. (The data is still good
+internally, and the "%e" format of printf() or sprintf() in perl will still
+produce valid results.) See README.tru64 for additional details.
+
+Continuing anyway.
+!
+UGLY
+ fi
+ $rm -f try try.c
esac
- d_Gconvert='sprintf((b),"%.*Lg",(n),(x))'
;;
esac
EOCBU
-case "`/usr/sbin/sizer -v`" in
+case "$myosvers" in
*[1-4].0*) d_modfl=undef ;; # must wait till 5.0
esac
+# Keep that leading tab.
+ old_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
+for p in $loclibpth
+do
+ if test -d $p; then
+ echo "Appending $p to LD_LIBRARY_PATH." >& 4
+ case "$LD_LIBRARY_PATH" in
+ '') LD_LIBRARY_PATH=$p ;;
+ *) LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$p ;;
+ esac
+ fi
+done
+case "$LD_LIBRARY_PATH" in
+"$old_LD_LIBRARY_PATH") ;;
+*) echo "LD_LIBRARY_PATH is now $LD_LIBRARY_PATH." >& 4 ;;
+esac
+case "$LD_LIBRARY_PATH" in
+'') ;;
+* ) export LD_LIBRARY_PATH ;;
+esac
+
#
# Unset temporary variables no more needed.
#