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_cc_style=
-case "`$cc -v 2>&1 | grep cc`" in
-*gcc*) _gcc_version=`$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
+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 seems to be less than 2.95.2.
-*** 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).
+*** 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
+*** 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.
*** 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
-*** dumps core (meaning that the SDBM_File is unusable). As this core
-*** dump doesn't happen with the vendor cc, this is most probably
-*** a lingering bug in gcc. Therefore unless you have a better gcc
-*** you are still better off using the vendor cc.
+*** 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.
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 taint$$.o 2>&1`" in
*/gemc_cc*) # we have the new DEC GEM CC
esac
# be nauseatingly ANSI
-case "`$cc -v 2>&1 | grep gcc`" in
-*gcc*) ccflags="$ccflags -ansi"
+case "$isgcc" in
+gcc) ccflags="$ccflags -ansi"
;;
*) ccflags="$ccflags -std"
;;
# we want optimisation
case "$optimize" in
-'') case "`$cc -v 2>&1 | grep gcc`" in
- *gcc*)
- optimize='-O3' ;;
+'') case "$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
case "$usethreads" in
$define|true|[yY]*)
# Threads interfaces changed with V4.0.
- case "`$cc -v 2>&1 | grep gcc`" in
- *gcc*)ccflags="-D_REENTRANT $ccflags" ;;
+ case "$isgcc" in
+ 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="$define"
;;
esac
EOCBU
# This script UU/uselongdouble.cbu will get 'called-back' by Configure
# after it has prompted the user for whether to use long doubles.
case "$uselongdouble" in
-$define|true|[yY]*) d_Gconvert='sprintf((b),"%.*Lg",(n),(x))' ;;
+$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
+
#
# Unset temporary variables no more needed.
#
https://perl5.git.perl.org / perl5.git / blobdiff