cc=${cc:-cc}
+# Intentional leading tabs.
+ myosvers="`/usr/sbin/sizer -v 2>/dev/null || uname -r`"
+ unamer="`uname -r`"
+
+# Fancy compiler suites use optimising linker as well as compiler.
+# <spider@Orb.Nashua.NH.US>
+case "$unamer" in
+*[123].*) # old loader
+ lddlflags="$lddlflags -O3"
+ ;;
+*) if $test "X$optimize" = "X$undef"; then
+ lddlflags="$lddlflags -msym"
+ else
+ case "$myosvers" in
+ *4.0D*)
+ # QAR 56761: -O4 + .so may produce broken code,
+ # fixed in 4.0E or better.
+ ;;
+ *)
+ lddlflags="$lddlflags $optimize"
+ ;;
+ esac
+ # -msym: If using a sufficiently recent /sbin/loader,
+ # keep the module symbols with the modules.
+ lddlflags="$lddlflags -msym $_lddlflags_strict_ansi"
+ fi
+ ;;
+esac
+# Yes, the above loses if gcc does not use the system linker.
+# If that happens, let me know about it. <jhi@iki.fi>
+
+# Because there is no other handy way to recognize 3.X.
+case "$unamer" in
+*3.*) ccflags="$ccflags -DDEC_OSF1_3_X" ;;
+esac
+
+case "`$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*) ;; # pass
-*) # 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 /tmp/taint$$.o 2>&1`" in
+case "$isgcc" in
+gcc) if [ "X$gccversion" = "X" ]; then
+ # Done too late in Configure if hinted
+ gccversion=`$cc -dumpversion`
+ 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, produces good code, and is very ANSI C fastidious.)
+
+Cannot continue, aborting.
+
+EOF
+ exit 1
+ fi
+ if test "$1" -eq 2 -a "$2" -eq 95 -a "$3" -le 2; then
+ cat >&4 <<EOF
+
+*** 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
+ # -ansi is fine for gcc in Tru64 (-ansi is not universally so).
+ _ccflags_strict_ansi="-ansi"
+ ;;
+*) # compile something.
+ cat >try.c <<EOF
+int main() { return 0; }
+EOF
+ ccversion=`cc -V | awk '/(Compaq|DEC) C/ {print $3}' | grep '^V'`
+ # the main point is the '-v' flag of 'cc'.
+ case "`cc -v -c try.c 2>&1`" in
*/gemc_cc*) # we have the new DEC GEM CC
_DEC_cc_style=new
;;
_DEC_cc_style=old
;;
esac
- # cleanup
- rm -f /tmp/taint$$.o
+ # We need to figure out whether -c99 is a valid flag to use.
+ # If it is, we can use it for being nauseatingly C99 ANSI --
+ # but even then the lddlflags needs to stay -std1.
+ # If it is not, we must use -std1 for both flags.
+ #
+ case "`cc -c99 try.c 2>&1`" in
+ *"-c99: Unknown flag"*)
+ _ccflags_strict_ansi="-std1"
+ ;;
+ *) _ccflags_strict_ansi="-c99"
+ ;;
+ esac
+ _lddlflags_strict_ansi="-std1"
+ # -no_ansi_alias because Perl code is not that strict
+ # (also gcc uses by default -fno-strict-aliasing).
+ case "$unamer" in
+ *[1234].*) ;;
+ *5.*) _ccflags_strict_ansi="$_ccflags_strict_ansi -no_ansi_alias" ;;
+ esac
+ # Cleanup.
+ rm -f try.c try.o
;;
esac
-# be nauseatingly ANSI
-case "`$cc -v 2>&1 | grep gcc`" in
-*gcc*) ccflags="$ccflags -ansi"
- ;;
-*) ccflags="$ccflags -std"
- ;;
+# Be nauseatingly ANSI
+ccflags="$ccflags $_ccflags_strict_ansi"
+
+# g++ needs a lot of definitions to see the same set of
+# prototypes from <unistd.h> et alia as cxx/cc see.
+# Note that we cannot define _XOPEN_SOURCE_EXTENDED or
+# its moral equivalent, _XOPEN_SOURCE=500 (which would
+# define a lot of the required prototypes for us), because
+# the gcc-processed version of <sys/wait.h> contains fatally
+# conflicting prototypes for wait3(). The _SOCKADDR_LEN is
+# needed to get struct sockaddr and struct sockaddr_in to align.
+case "$cc" in
+*g++*) ccflags="$ccflags -D_XOPEN_SOURCE -D_OSF_SOURCE -D_AES_SOURCE -D_BSD -D_POSIX_C_SOURCE=199309L -D_POSIX_PII_SOCKET -D_SOCKADDR_LEN" ;;
esac
# for gcc the Configure knows about the -fpic:
# we want optimisation
case "$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
+ esac
ccflags="$ccflags -D_INTRINSICS"
;;
esac
;;
esac
+case "$isgcc" in
+gcc) ;;
+*) case "$optimize" in
+ *-O*) # With both -O and -g, the -g must be -g3.
+ optimize="`echo $optimize | sed 's/-g[1-4]*/-g3/'`"
+ ;;
+ esac
+ ;;
+esac
+
+## Optimization limits
+case "$isgcc" in
+gcc) # gcc 3.2.1 wants a lot of memory for -O3'ing toke.c
+cat >try.c <<EOF
+#include <stdio.h>
+#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 $maxdsiz MB, which is (sadly) not
+always enough to fully optimize some source code files of Perl,
+at least 256 MB seems to be necessary as of Perl 5.8.0. I'll try to
+use a lower optimization level for those parts. You could either try
+using your shell's ulimit/limit/limits command to raise your datasize
+(assuming the system-wide hard resource limits allow you to go higher),
+or if you can't go higher and if you are a sysadmin, and you *do* want
+the full optimization, you can tune the 'max_per_proc_data_size'
+kernel parameter: see man sysconfigtab, and man sys_attrs_proc.
+
+EOM
+toke_cflags='optimize=-O2'
+ fi
+;;
+esac
+
+# The patch 23787
+# https://github.com/Perl/perl5/commit/73cb726371990cd489597c4fee405a9815abf4da
+# broke things for gcc (at least gcc 3.3) so that many of the pack()
+# checksum tests for formats L, j, J, especially when combined
+# with the < and > specifiers, started to fail if compiled with plain -O3.
+case "$isgcc" in
+gcc)
+pp_pack_cflags='optimize="-O3 -fno-cse-skip-blocks"'
+;;
+esac
+
+# we want dynamic fp rounding mode, and we want ieee exception semantics
+case "$isgcc" in
+gcc) ccflags="$ccflags -mfp-rounding-mode=d -mieee" ;;
+*) 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
# 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 "`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"
- 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 "$optimize" in
*-g*) ;; # left intentionally blank
-*) case "`uname -r`" in
+*) case "$unamer" in
*[123].*)
case "$useshrplib" in
false|undef|'') lddlflags="$lddlflags -s" ;;
;;
*) lddlflags="$lddlflags -s"
;;
- esac
- ;;
+ esac
+ ;;
esac
#
# please adjust this appropriately. See also pp_sys.c just before the
# emulate_eaccess().
+# Fixed in V5.0A.
+case "$myosvers" in
+*5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*)
+ : ok
+ ;;
+*)
+# V5.0 or previous
pp_sys_cflags='ccflags="$ccflags -DNO_EFF_ONLY_OK"'
+ ;;
+esac
# The off_t is already 8 bytes, so we do have largefileness.
-# This script UU/usethreads.cbu will get 'called-back' by Configure
-# after it has prompted the user for whether to use threads.
cat > UU/usethreads.cbu <<'EOCBU'
+# This script UU/usethreads.cbu will get 'called-back' by Configure
+# after it has prompted the user for whether to use threads.
case "$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
+ $cc -c pthread.c 2> pthread.err
+ if egrep -q "unrecognized compiler|syntax error" pthread.err; then
+ cat >&4 <<EOF
+***
+*** I'm sorry but your C compiler ($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 "`$cc -v 2>&1 | grep gcc`" in
- *gcc*)ccflags="-D_REENTRANT $ccflags" ;;
- *) case "`uname -r`" in
+ case "$isgcc" in
+ gcc)
+ ccflags="-D_REENTRANT $ccflags"
+ ;;
+ *) case "$unamer" in
*[123].*) ccflags="-threads $ccflags" ;;
*) ccflags="-pthread $ccflags" ;;
esac
;;
- esac
- case "`uname -r`" in
+ esac
+ case "$unamer" in
*[123].*) libswanted="$libswanted pthreads mach exc c_r" ;;
*) libswanted="$libswanted pthread exc" ;;
esac
- usemymalloc='n'
+ case "$usemymalloc" in
+ '')
+ usemymalloc='n'
+ ;;
+ esac
+ # These symbols are renamed in <time.h> so
+ # that the Configure hasproto doesn't see them.
+ d_asctime_r_proto="$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 "$myosvers" 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 for long doubles.
+ 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 $_ccflags_strict_ansi 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
+ $rm -f try try.c
+ esac
+ ;;
+esac
+EOCBU
+
+case "$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
+
+# Enforce strict data.
+case "$isgcc" in
+gcc) ;;
+*) # -trapuv poisons uninitialized stack with
+ # 0xfff58005fff58005 which is as a pointer a segmentation fault and
+ # as a floating point a signaling NaN. As integers/longs that causes
+ # no traps but at least it is not zero.
+ # -readonly_strings moves string constants into read-only section
+ # which hopefully means that modifying them leads into segmentation
+ # faults.
+ for i in -trapuv -readonly_strings
+ do
+ case "$ccflags" in
+ *$i*) ;;
+ *) ccflags="$ccflags $i" ;;
+ esac
+ done
+ ;;
+esac
+
+# In Tru64 several slightly incompatible socket APIs are supported,
+# which one applies is chosen with a set of defines:
+# -D_SOCKADDR_LEN enables 4.4BSD and IPv6 interfaces
+# -D_POSIX_PII_SOCKET enables socklen_t instead of size_t
+for i in -D_SOCKADDR_LEN -D_POSIX_PII_SOCKET
+do
+ case "$ccflags" in
+ *$i*) ;;
+ *) ccflags="$ccflags $i" ;;
+ esac
+done
+# For OSF/1 3.2, however, defining _SOCKADDR_LEN would be
+# a bad idea since it breaks send() and recv().
+case "$ccflags" in
+*DEC_OSF1_3_X*SOCKADDR_LEN*)
+ ccflags=`echo " $ccflags " | sed -e 's/ -D_SOCKADDR_LEN / /'`
+ ;;
+esac
+
+# These are in libm, but seem broken (there are no protos in headers,
+# or man pages, either)
+d_fdim='undef'
+d_fma='undef'
+d_fmax='undef'
+d_fmin='undef'
+d_llrint='undef'
+d_llround='undef'
+d_lrint='undef'
+d_lround='undef'
+d_nan='undef'
+d_nearbyint='undef'
+d_round='undef'
+d_scalbn='undef'
+d_tgamma='undef'
+
#
# Unset temporary variables no more needed.
#
unset _DEC_cc_style
-
+
#
# History:
#
# * 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)
#
# * 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>
#
# 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.
#
+
https://perl5.git.perl.org / perl5.git / blobdiff