# Done too late in Configure if hinted
gccversion=`$cc --version | sed 's/.*(GCC) *//'`
fi
- 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
+ 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).
***
*** 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.)
+*** system, produces good code, and is very ANSI C fastidious.)
Cannot continue, aborting.
EOF
fi
+ # -ansi is fine for gcc in Tru64 (-ansi is not universally so).
+ _ccflags_strict_ansi="-ansi"
;;
-*) # compile something small: taint.c is fine for this.
+*) # 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 -I. -c taint.c -o taint$$.o 2>&1`" in
+ case "`cc -v -c try.c 2>&1`" in
*/gemc_cc*) # we have the new DEC GEM CC
_DEC_cc_style=new
;;
_DEC_cc_style=old
;;
esac
- # cleanup
- rm -f taint$$.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"
+ ;;
+ *) # However, use the -c99 only if compiling for
+ # -DPERL_MEM_LOG, where the C99 feature __func__
+ # is useful to have. Otherwise use the good old
+ # -std1 so that we stay C89 strict, which the goal
+ # of the Perl C code base (no //, no code between
+ # declarations, etc). Moreover, the Tru64 cc is
+ # not fully C99, and most probably never will be.
+ #
+ # The -DPERL_MEM_LOG can be either in ccflags
+ # (if using an old config.sh) or in the command line
+ # (which has been stowed away in UU/cmdline.opt).
+ #
+ case "$ccflags `cat UU/cmdline.opt`" in
+ *-DPERL_MEM_LOG*) _ccflags_strict_ansi="-c99" ;;
+ *) _ccflags_strict_ansi="-std1" ;;
+ esac
+ ;;
+ esac
+ _lddlflags_strict_ansi="-std1"
+ # -no_ansi_alias because Perl code is not that strict
+ # (also gcc uses by default -fno-strict-aliasing).
+ _ccflags_strict_ansi="$_ccflags_strict_ansi -no_ansi_alias"
+ # Cleanup.
+ rm -f try.c try.o
;;
esac
-# be nauseatingly ANSI
-case "$isgcc" in
-gcc) ccflags="$ccflags -ansi"
- ;;
-*) ccflags="$ccflags -std"
- ;;
+# Be nauseatingly ANSI
+ccflags="$ccflags $_ccflags_strict_ansi"
+
+# g++ needs a lot of definitions to see the same set of
+# prototypes from <unistd.h> et alia as cxx/cc see.
+# Note that we cannot define _XOPEN_SOURCE_EXTENDED or
+# its moral equivalent, _XOPEN_SOURCE=500 (which would
+# define a lot of the required prototypes for us), because
+# the gcc-processed version of <sys/wait.h> contains fatally
+# conflicting prototypes for wait3().
+case "$cc" in
+*g++*) ccflags="$ccflags -D_XOPEN_SOURCE -D_OSF_SOURCE -D_AES_SOURCE -D_BSD -D_POSIX_C_SOURCE=199309L -D_POSIX_PII_SOCKET" ;;
esac
# for gcc the Configure knows about the -fpic:
;;
esac
+case "$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 $maxdsiz MB, which is (sadly) not
+always enough to fully optimize some source code files of Perl,
+at least 256 MB seems to be necessary as of Perl 5.8.0. I'll try to
+use a lower optimization level for those parts. You could either try
+using your shell's ulimit/limit/limits command to raise your datasize
+(assuming the system-wide hard resource limits allow you to go higher),
+or if you can't go higher and if you are a sysadmin, and you *do* want
+the full optimization, you can tune the 'max_per_proc_data_size'
+kernel parameter: see man sysconfigtab, and man sys_attrs_proc.
+
+EOM
+toke_cflags='optimize=-O2'
+ fi
+;;
+esac
+
+# The patch 23787
+# http://public.activestate.com/cgi-bin/perlbrowse?patch=23787
+# broke things for gcc (at least gcc 3.3) so that many of the pack()
+# checksum tests for formats L, j, J, especially when combined
+# with the < and > specifiers, started to fail if compiled with plain -O3.
+case "$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) ;;
# 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 "$myosvers" in
*4.0D*)
# QAR 56761: -O4 + .so may produce broken code,
# fixed in 4.0E or better.
esac
# -msym: If using a sufficiently recent /sbin/loader,
# keep the module symbols with the modules.
- lddlflags="$lddlflags -msym -std"
+ lddlflags="$lddlflags -msym $_lddlflags_strict_ansi"
fi
;;
esac
# Yes, the above loses if gcc does not use the system linker.
# If that happens, let me know about it. <jhi@iki.fi>
+# Because there is no other handy way to recognize 3.X.
+case "`uname -r`" in
+*3.*) ccflags="$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
+ $cc -c pthread.c 2> pthread.err
+ if egrep -q "unrecognized compiler|syntax error" pthread.err; then
+ cat >&4 <<EOF
+***
+*** I'm sorry but your C compiler ($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 "$isgcc" in
- gcc) ccflags="-D_REENTRANT $ccflags" ;;
+ gcc)
+ ccflags="-D_REENTRANT $ccflags"
+ ;;
*) case "`uname -r`" in
*[123].*) ccflags="-threads $ccflags" ;;
*) ccflags="-pthread $ccflags" ;;
esac
EOCBU
+# malloc wrap works
+case "$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
***
exit 1
;;
*)
- # Test whether libc's been fixed yet.
+ # Test whether libc's been fixed yet for long doubles.
cat >try.c <<\TRY
#include <stdio.h>
int main(int argc, char **argv)
# 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
+ if cc -o try $_ccflags_strict_ansi try.c && ./try
then
: ok
else
esac
EOCBU
-case "`/usr/sbin/sizer -v`" in
+case "$myosvers" in
*[1-4].0*) d_modfl=undef ;; # must wait till 5.0
esac
-# Keep those leading tabs.
- needusrshlib=''
+# Keep that leading tab.
old_LD_LIBRARY_PATH=$LD_LIBRARY_PATH
for p in $loclibpth
do
- if test -n "`ls $p/libdb.so* 2>/dev/null`"; then
- needusrshlib=yes
- fi
if test -d $p; then
echo "Appending $p to LD_LIBRARY_PATH." >& 4
case "$LD_LIBRARY_PATH" in
"$old_LD_LIBRARY_PATH") ;;
*) echo "LD_LIBRARY_PATH is now $LD_LIBRARY_PATH." >& 4 ;;
esac
-# This is evil but I can't think of a nice workaround:
-# the /usr/shlib/libdb.so needs to be seen first,
-# or running Configure will fail.
-if test -n "$needusrshlib"; then
- echo "Prepending /usr/shlib to loclibpth." >& 4
- loclibpth="/usr/shlib $loclibpth"
- echo "loclibpth is now $loclibpth." >& 4
-fi
+case "$LD_LIBRARY_PATH" in
+'') ;;
+* ) export LD_LIBRARY_PATH ;;
+esac
#
# Unset temporary variables no more needed.
# * Set -Olimit to 3200 because perl_yylex.c got too big
# for the optimizer.
#
+
projects / p5sagit/p5-mst-13.2.git / blobdiff