# and it is called GEM. Many of the options we are going to use depend
# on the compiler style.
-# do NOT, I repeat, *NOT* take away those leading tabs
+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_uname_r=
_DEC_cc_style=
- # set
- _DEC_uname_r=`uname -r`
- # _DEC_cc_style set soon below
-# Configure Black Magic (TM)
+case "$isgcc" in
+gcc) if [ "X$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 ($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).
+***
+*** Therefore, I strongly suggest upgrading your gcc. (Why don't you use
+*** the vendor cc is also a good question. It comes with the operating
+*** system and produces good code.)
+
+Cannot continue, aborting.
+
+EOF
+ exit 1
+ fi
+ if test "$1" -eq 2 -a "$2" -eq 95 -a "$3" -le 2; then
+ cat >&4 <<EOF
-case "$cc" in
-*gcc*) ;; # pass
+*** Note that as of gcc 2.95.2 (19991024) and Perl 5.6.0 (March 2000)
+*** if the said Perl is compiled with the said gcc the lib/sdbm test
+*** may dump core (meaning that the SDBM_File extension is unusable).
+*** As this core dump never happens with the vendor cc, this is most
+*** probably a lingering bug in gcc. Therefore unless you have a better
+*** gcc installation you are still better off using the vendor cc.
+
+Since you explicitly chose gcc, I assume that you know what are doing.
+
+EOF
+ fi
+ ;;
*) # compile something small: taint.c is fine for this.
+ ccversion=`cc -V | awk '/(Compaq|DEC) C/ {print $3}' | grep '^V'`
# the main point is the '-v' flag of 'cc'.
- case "`cc -v -I. -c taint.c -o /tmp/taint$$.o 2>&1`" in
+ case "`cc -v -I. -c taint.c -o taint$$.o 2>&1`" in
*/gemc_cc*) # we have the new DEC GEM CC
_DEC_cc_style=new
;;
;;
esac
# cleanup
- rm -f /tmp/taint$$.o
+ rm -f taint$$.o
;;
esac
# be nauseatingly ANSI
-case "$cc" in
-*gcc*) ccflags="$ccflags -ansi"
+case "$isgcc" in
+gcc) ccflags="$ccflags -ansi"
;;
*) ccflags="$ccflags -std"
;;
# we want optimisation
case "$optimize" in
-'') case "$cc" in
- *gcc*)
- optimize='-O3' ;;
+'') case "$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="$ccflags -D_INTRINSICS"
;;
esac
+## Optimization limits
+case "$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) ;;
+*) 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
# no attempt to figure out the additional location(s) searched by
# gcc, since not all versions of gcc are easily coerced into
# revealing that information.
-#
-# This or the new useshrplib default below breaks the build.
-# Commented out for this snapshot.
-#glibpth="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc"
-#glibpth="$glibpth /usr/lib /usr/local/lib /var/shlib"
+glibpth="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc"
+glibpth="$glibpth /usr/lib /usr/local/lib /var/shlib"
# dlopen() is in libc
libswanted="`echo $libswanted | sed -e 's/ dl / /'`"
# Fancy compiler suites use optimising linker as well as compiler.
# <spider@Orb.Nashua.NH.US>
-case "$_DEC_uname_r" in
+case "`uname -r`" in
*[123].*) # old loader
lddlflags="$lddlflags -O3"
;;
-*) lddlflags="$lddlflags $optimize -msym"
- # -msym: If using a sufficiently recent /sbin/loader,
- # keep the module symbols with the modules.
+*) if $test "X$optimize" = "X$undef"; then
+ lddlflags="$lddlflags -msym"
+ else
+ case "`/usr/sbin/sizer -v`" in
+ *4.0D*)
+ # QAR 56761: -O4 + .so may produce broken code,
+ # fixed in 4.0E or better.
+ ;;
+ *)
+ lddlflags="$lddlflags $optimize"
+ ;;
+ esac
+ # -msym: If using a sufficiently recent /sbin/loader,
+ # keep the module symbols with the modules.
+ lddlflags="$lddlflags -msym -std"
+ fi
;;
esac
# Yes, the above loses if gcc does not use the system linker.
# As noted above the -DDEBUGGING is added automagically by Configure if -g.
case "$optimize" in
*-g*) ;; # left intentionally blank
-*) case "$_DEC_uname_r" in
+*) case "`uname -r`" in
*[123].*)
case "$useshrplib" in
false|undef|'') lddlflags="$lddlflags -s" ;;
;;
esac
-if [ "X$usethreads" != "X" ]; then
- # Threads interfaces changed with V4.0.
- case "$_DEC_uname_r" in
- *[123].*) libswanted="$libswanted pthreads mach exc c_r"
- ccflags="-DUSE_THREADS -threads $ccflags"
- ;;
- *) libswanted="$libswanted pthread exc"
- ccflags="-DUSE_THREADS -pthread $ccflags"
- ;;
- esac
- usemymalloc='n'
-fi
-
#
# Make embedding in things like INN and Apache more memory friendly.
# Keep it overridable on the Configure command line, though, so that
# "-Uuseshrplib" prevents this default.
#
-# This or the glibpth change above breaks the build. Commented out
-# for this snapshot.
-#case "$_DEC_cc_style.$useshrplib" in
-# new.) useshrplib="$define" ;;
-#esac
+case "$_DEC_cc_style.$useshrplib" in
+ new.) useshrplib="$define" ;;
+esac
+
+# The EFF_ONLY_OK from <sys/access.h> is present but dysfunctional for
+# [RWX]_OK as of Digital UNIX 4.0[A-D]?. If and when this gets fixed,
+# please adjust this appropriately. See also pp_sys.c just before the
+# emulate_eaccess().
+
+# Fixed in V5.0A.
+case "`/usr/sbin/sizer -v`" in
+*5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*)
+ : ok
+ ;;
+*)
+# V5.0 or previous
+pp_sys_cflags='ccflags="$ccflags -DNO_EFF_ONLY_OK"'
+ ;;
+esac
+
+# The off_t is already 8 bytes, so we do have largefileness.
+
+cat > UU/usethreads.cbu <<'EOCBU'
+# This script UU/usethreads.cbu will get 'called-back' by Configure
+# 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"
+ ;;
+ *) case "`uname -r`" in
+ *[123].*) ccflags="-threads $ccflags" ;;
+ *) ccflags="-pthread $ccflags" ;;
+ esac
+ ;;
+ esac
+ case "`uname -r`" in
+ *[123].*) libswanted="$libswanted pthreads mach exc c_r" ;;
+ *) libswanted="$libswanted pthread exc" ;;
+ esac
+
+ case "$usemymalloc" in
+ ''|'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
+ # 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
+
+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
+ *[1-4].0*) cat >&4 <<EOF
+
+***
+*** Sorry, you cannot use long doubles in pre-V5.0 releases of Tru64.
+***
+
+Cannot continue, aborting.
+
+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
+ $rm -f try try.c
+ esac
+ ;;
+esac
+EOCBU
+
+case "`/usr/sbin/sizer -v`" in
+*[1-4].0*) d_modfl=undef ;; # must wait till 5.0
+esac
+
+# Keep that leading tab.
+ old_LD_LIBRARY_PATH=$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.
#
unset _DEC_cc_style
-unset _DEC_uname_r
#
# History:
#
+# perl5.005_51:
+#
+# September-1998 Jarkko Hietaniemi <jhi@iki.fi>
+#
+# * Added the -DNO_EFF_ONLY_OK flag ('use filetest;' support).
+#
# perl5.004_57:
#
# 19-Dec-1997 Spider Boardman <spider@Orb.Nashua.NH.US>
#
-# * Newer Digial UNIX compilers enforce signaling for NaN without
+# * Newer Digital UNIX compilers enforce signaling for NaN without
# -ieee. Added -fprm d at the same time since it's friendlier for
# embedding.
#