413 lines
11 KiB
Bash
413 lines
11 KiB
Bash
# hints/dec_osf.sh
|
|
|
|
# * If you want to debug perl or want to send a
|
|
# stack trace for inclusion into an bug report, call
|
|
# Configure with the additional argument -Doptimize=-g2
|
|
# or uncomment this assignment to "optimize":
|
|
#
|
|
#optimize=-g2
|
|
#
|
|
# If you want both to optimise and debug with the DEC cc
|
|
# you must have -g3, e.g. "-O4 -g3", and (re)run Configure.
|
|
#
|
|
# * gcc can always have both -g and optimisation on.
|
|
#
|
|
# * debugging optimised code, no matter what compiler
|
|
# one is using, can be surprising and confusing because of
|
|
# the optimisation tricks like code motion, code removal,
|
|
# loop unrolling, and inlining. The source code and the
|
|
# executable code simply do not agree any more while in
|
|
# mid-execution, the optimiser only cares about the results.
|
|
#
|
|
# * Configure will automatically add the often quoted
|
|
# -DDEBUGGING for you if the -g is specified.
|
|
#
|
|
# * There is even more optimisation available in the new
|
|
# (GEM) DEC cc: -O5 and -fast. "man cc" will tell more about them.
|
|
# The jury is still out whether either or neither help for Perl
|
|
# and how much. Based on very quick testing, -fast boosts
|
|
# raw data copy by about 5-15% (-fast brings in, among other
|
|
# things, inlined, ahem, fast memcpy()), while on the other
|
|
# hand searching things (index, m//, s///), seems to get slower.
|
|
# Your mileage will vary.
|
|
#
|
|
# * The -std is needed because the following compiled
|
|
# without the -std and linked with -lm
|
|
#
|
|
# #include <math.h>
|
|
# #include <stdio.h>
|
|
# int main(){short x=10,y=sqrt(x);printf("%d\n",y);}
|
|
#
|
|
# will in Digital UNIX 3.* and 4.0b print 0 -- and in Digital
|
|
# UNIX 4.0{,a} dump core: Floating point exception in the printf(),
|
|
# the y has become a signaling NaN.
|
|
#
|
|
# * Compilation warnings like:
|
|
#
|
|
# "Undefined the ANSI standard macro ..."
|
|
#
|
|
# can be ignored, at least while compiling the POSIX extension
|
|
# and especially if using the sfio (the latter is not a standard
|
|
# part of Perl, never mind if it says little to you).
|
|
#
|
|
|
|
# If using the DEC compiler we must find out the DEC compiler style:
|
|
# the style changed between Digital UNIX (aka DEC OSF/1) 3 and
|
|
# Digital UNIX 4. The old compiler was originally from Ultrix and
|
|
# the MIPS company, the new compiler is originally from the VAX world
|
|
# and it is called GEM. Many of the options we are going to use depend
|
|
# on the compiler style.
|
|
|
|
cc=${cc:-cc}
|
|
|
|
# do NOT, I repeat, *NOT* take away the leading tabs
|
|
# Configure Black Magic (TM)
|
|
# reset
|
|
_DEC_cc_style=
|
|
case "`$cc -v 2>&1 | grep cc`" in
|
|
*gcc*) _gcc_version=`$cc -v 2>&1 | grep "gcc version" | sed 's%^gcc version \([0-9]*\)\.\([0-9]*\) .*%\1 \2%'`
|
|
set $_gcc_version
|
|
if test "$1" -lt 2 -o \( "$1" -eq 2 -a "$2" -lt 95 \); then
|
|
cat >&4 <<EOF
|
|
|
|
Your cc seems to be gcc and its version seems to be less than 2.95.
|
|
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.)
|
|
|
|
Note that as of gcc 2.95 (19990728) and Perl 5.6.0 (end of March 2000)
|
|
if the said Perl is compiled with the said gcc the lib/sdbm test will
|
|
dump core. As this 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.
|
|
|
|
Cannot continue, aborting.
|
|
|
|
EOF
|
|
exit 1
|
|
fi
|
|
;;
|
|
*) # compile something small: taint.c is fine for this.
|
|
# the main point is the '-v' flag of 'cc'.
|
|
case "`cc -v -I. -c taint.c -o taint$$.o 2>&1`" in
|
|
*/gemc_cc*) # we have the new DEC GEM CC
|
|
_DEC_cc_style=new
|
|
;;
|
|
*) # we have the old MIPS CC
|
|
_DEC_cc_style=old
|
|
;;
|
|
esac
|
|
# cleanup
|
|
rm -f taint$$.o
|
|
;;
|
|
esac
|
|
|
|
# be nauseatingly ANSI
|
|
case "`$cc -v 2>&1 | grep gcc`" in
|
|
*gcc*) ccflags="$ccflags -ansi"
|
|
;;
|
|
*) ccflags="$ccflags -std"
|
|
;;
|
|
esac
|
|
|
|
# for gcc the Configure knows about the -fpic:
|
|
# position-independent code for dynamic loading
|
|
|
|
# we want optimisation
|
|
|
|
case "$optimize" in
|
|
'') case "`$cc -v 2>&1 | grep gcc`" in
|
|
*gcc*)
|
|
optimize='-O3' ;;
|
|
*) case "$_DEC_cc_style" in
|
|
new) optimize='-O4'
|
|
ccflags="$ccflags -fprm d -ieee"
|
|
;;
|
|
old) optimize='-O2 -Olimit 3200' ;;
|
|
esac
|
|
ccflags="$ccflags -D_INTRINSICS"
|
|
;;
|
|
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
|
|
# look there by default. The sharable /sbin utilities were all
|
|
# built with "-Wl,-rpath,/shlib" to get around that. This makes
|
|
# 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.
|
|
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 / /'`"
|
|
|
|
# libPW contains nothing useful for perl
|
|
libswanted="`echo $libswanted | sed -e 's/ PW / /'`"
|
|
|
|
# libnet contains nothing useful for perl here, and doesn't work
|
|
libswanted="`echo $libswanted | sed -e 's/ net / /'`"
|
|
|
|
# libbsd contains nothing used by perl that is not already in libc
|
|
libswanted="`echo $libswanted | sed -e 's/ bsd / /'`"
|
|
|
|
# libc need not be separately listed
|
|
libswanted="`echo $libswanted | sed -e 's/ c / /'`"
|
|
|
|
# ndbm is already in libc
|
|
libswanted="`echo $libswanted | sed -e 's/ ndbm / /'`"
|
|
|
|
# the basic lddlflags used always
|
|
lddlflags='-shared -expect_unresolved "*"'
|
|
|
|
# Fancy compiler suites use optimising linker as well as compiler.
|
|
# <spider@Orb.Nashua.NH.US>
|
|
case "`uname -r`" in
|
|
*[123].*) # old loader
|
|
lddlflags="$lddlflags -O3"
|
|
;;
|
|
*) 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.
|
|
# If that happens, let me know about it. <jhi@iki.fi>
|
|
|
|
|
|
# If debugging or (old systems and doing shared)
|
|
# then do not strip the lib, otherwise, strip.
|
|
# As noted above the -DDEBUGGING is added automagically by Configure if -g.
|
|
case "$optimize" in
|
|
*-g*) ;; # left intentionally blank
|
|
*) case "`uname -r`" in
|
|
*[123].*)
|
|
case "$useshrplib" in
|
|
false|undef|'') lddlflags="$lddlflags -s" ;;
|
|
esac
|
|
;;
|
|
*) lddlflags="$lddlflags -s"
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
|
|
#
|
|
# 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.
|
|
#
|
|
|
|
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
|
|
$define|true|[yY]*)
|
|
# Threads interfaces changed with V4.0.
|
|
case "`$cc -v 2>&1 | grep gcc`" 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
|
|
'')
|
|
usemymalloc='n'
|
|
;;
|
|
esac
|
|
;;
|
|
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]*) d_Gconvert='sprintf((b),"%.*Lg",(n),(x))' ;;
|
|
esac
|
|
EOCBU
|
|
|
|
#
|
|
# Unset temporary variables no more needed.
|
|
#
|
|
|
|
unset _DEC_cc_style
|
|
|
|
#
|
|
# 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 Digital UNIX compilers enforce signaling for NaN without
|
|
# -ieee. Added -fprm d at the same time since it's friendlier for
|
|
# embedding.
|
|
#
|
|
# * Fixed the library search path to match cc, ld, and /sbin/loader.
|
|
#
|
|
# * Default to building -Duseshrplib on newer systems. -Uuseshrplib
|
|
# still overrides.
|
|
#
|
|
# * Fix -pthread additions for useshrplib. ld has no -pthread option.
|
|
#
|
|
#
|
|
# perl5.004_04:
|
|
#
|
|
# 19-Sep-1997 Spider Boardman <spider@Orb.Nashua.NH.US>
|
|
#
|
|
# * libnet on Digital UNIX is for JAVA, not for sockets.
|
|
#
|
|
#
|
|
# perl5.003_28:
|
|
#
|
|
# 22-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi>
|
|
#
|
|
# * Restructuring Spider's suggestions.
|
|
#
|
|
# * Older Digital UNIXes cannot handle -Olimit ... for $lddlflags.
|
|
#
|
|
# * ld -s cannot be used in older Digital UNIXes when doing shared.
|
|
#
|
|
#
|
|
# 21-Feb-1997 Spider Boardman <spider@Orb.Nashua.NH.US>
|
|
#
|
|
# * -hidden removed.
|
|
#
|
|
# * -DSTANDARD_C removed.
|
|
#
|
|
# * -D_INTRINSICS added. (that -fast does not seem to buy much confirmed)
|
|
#
|
|
# * odbm not in libc, only ndbm. Therefore dbm back to $libswanted.
|
|
#
|
|
# * -msym for the newer runtime loaders.
|
|
#
|
|
# * $optimize also in $lddflags.
|
|
#
|
|
#
|
|
# perl5.003_27:
|
|
#
|
|
# 18-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi>
|
|
#
|
|
# * unset _DEC_cc_style and more commentary on -std.
|
|
#
|
|
#
|
|
# perl5.003_26:
|
|
#
|
|
# 15-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi>
|
|
#
|
|
# * -std and -ansi.
|
|
#
|
|
#
|
|
# perl5.003_24:
|
|
#
|
|
# 30-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi>
|
|
#
|
|
# * Fixing the note on -DDEBUGGING.
|
|
#
|
|
# * Note on -O5 -fast.
|
|
#
|
|
#
|
|
# perl5.003_23:
|
|
#
|
|
# 26-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi>
|
|
#
|
|
# * Notes on how to do both optimisation and debugging.
|
|
#
|
|
#
|
|
# 25-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi>
|
|
#
|
|
# * Remove unneeded libraries from $libswanted: PW, bsd, c, dbm
|
|
#
|
|
# * Restructure the $lddlflags build.
|
|
#
|
|
# * $optimize based on which compiler we have.
|
|
#
|
|
#
|
|
# perl5.003_22:
|
|
#
|
|
# 23-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de>
|
|
#
|
|
# * Added comments 'how to create a debugging version of perl'
|
|
#
|
|
# * Fixed logic of this script to prevent stripping of shared
|
|
# objects by the loader (see ld man page for -s) is debugging
|
|
# is set via the -g switch.
|
|
#
|
|
#
|
|
# 21-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de>
|
|
#
|
|
# * now 'dl' is always removed from libswanted. Not only if
|
|
# optimize is an empty string.
|
|
#
|
|
#
|
|
# 17-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de>
|
|
#
|
|
# * Removed 'dl' from libswanted: When the FreePort binary
|
|
# translator for Sun binaries is installed Configure concludes
|
|
# that it should use libdl.x.yz.fpx.so :-(
|
|
# Because the dlopen, dlclose,... calls are in the
|
|
# C library it not necessary at all to check for the
|
|
# dl library. Therefore dl is removed from libswanted.
|
|
#
|
|
#
|
|
# 1-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de>
|
|
#
|
|
# * Set -Olimit to 3200 because perl_yylex.c got too big
|
|
# for the optimizer.
|
|
#
|