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
case "$isgcc" in
gcc) if [ "X$gccversion" = "X" ]; then
# Done too late in Configure if hinted
- gccversion=`$cc --version | sed 's/.*(GCC) *//'`
+ gccversion=`$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
***
*** 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$$.o 2>&1`" in
+ # the main point is the '-v' flag of 'cc'.
+ case "`cc -v -c try.c 2>&1`" in
*/gemc_cc*) # we have the new DEC GEM CC
_DEC_cc_style=new
;;
_DEC_cc_style=old
;;
esac
- # cleanup
- rm -f taint$$.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 "$ccflags `cat UU/cmdline.opt`" in
+ *-DPERL_MEM_LOG*) _ccflags_strict_ansi="-c99" ;;
+ *) _ccflags_strict_ansi="-std1" ;;
+ esac
+ ;;
+ esac
+ _lddlflags_strict_ansi="-std1"
+ # -no_ansi_alias because Perl code is not that strict
+ # (also gcc uses by default -fno-strict-aliasing).
+ case "$unamer" in
+ *[1234].*) ;;
+ *5.*) _ccflags_strict_ansi="$_ccflags_strict_ansi -no_ansi_alias" ;;
+ esac
+ # Cleanup.
+ rm -f try.c try.o
;;
esac
-# be nauseatingly ANSI
-case "$isgcc" in
-gcc) ccflags="$ccflags -ansi"
- ;;
-*) ccflags="$ccflags -std"
- ;;
+# Be nauseatingly ANSI
+ccflags="$ccflags $_ccflags_strict_ansi"
+
+# g++ needs a lot of definitions to see the same set of
+# prototypes from <unistd.h> et alia as cxx/cc see.
+# Note that we cannot define _XOPEN_SOURCE_EXTENDED or
+# its moral equivalent, _XOPEN_SOURCE=500 (which would
+# define a lot of the required prototypes for us), because
+# the gcc-processed version of <sys/wait.h> contains fatally
+# conflicting prototypes for wait3(). The _SOCKADDR_LEN is
+# needed to get struct sockaddr and struct sockaddr_in to align.
+case "$cc" in
+*g++*) ccflags="$ccflags -D_XOPEN_SOURCE -D_OSF_SOURCE -D_AES_SOURCE -D_BSD -D_POSIX_C_SOURCE=199309L -D_POSIX_PII_SOCKET -D_SOCKADDR_LEN" ;;
esac
# for gcc the Configure knows about the -fpic:
*) case "$_DEC_cc_style" in
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 ()
;;
esac
+# The patch 23787
+# http://perl5.git.perl.org/perl.git/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) ;;
+gcc) ccflags="$ccflags -mfp-rounding-mode=d -mieee" ;;
*) case "$_DEC_cc_style" in
new) ccflags="$ccflags -fprm d -ieee" ;;
esac
# the basic lddlflags used always
lddlflags='-shared -expect_unresolved "*"'
-# Fancy compiler suites use optimising linker as well as compiler.
-# <spider@Orb.Nashua.NH.US>
-case "`uname -r`" in
-*[123].*) # old loader
- lddlflags="$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 "$optimize" in
*-g*) ;; # left intentionally blank
-*) case "`uname -r`" in
+*) case "$unamer" in
*[123].*)
case "$useshrplib" in
false|undef|'') lddlflags="$lddlflags -s" ;;
;;
*) lddlflags="$lddlflags -s"
;;
- esac
- ;;
+ esac
+ ;;
esac
#
# emulate_eaccess().
# Fixed in V5.0A.
-case "`/usr/sbin/sizer -v`" in
+case "$myosvers" in
*5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*)
: ok
;;
# 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
+# 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]*)
# cannot be used to compile a threaded Perl.
cat > pthread.c <<EOF
#include <pthread.h>
-extern int foo;
+extern int foo;
EOF
$cc -c pthread.c 2> pthread.err
- if grep -q "unrecognized compiler" pthread.err; then
+ if egrep -q "unrecognized compiler|syntax error" pthread.err; then
cat >&4 <<EOF
***
*** I'm sorry but your C compiler ($cc) cannot be used to
gcc)
ccflags="-D_REENTRANT $ccflags"
;;
- *) case "`uname -r`" in
+ *) case "$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
esac
EOCBU
+# malloc wrap works
+case "$usemallocwrap" in
+'') usemallocwrap='define' ;;
+esac
+
cat > UU/uselongdouble.cbu <<'EOCBU'
-# This script UU/uselongdouble.cbu will get 'called-back' by Configure
+# This script UU/uselongdouble.cbu will get 'called-back' by Configure
# after it has prompted the user for whether to use long doubles.
case "$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
'') LD_LIBRARY_PATH=$p ;;
*) LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$p ;;
esac
- fi
+ fi
done
case "$LD_LIBRARY_PATH" in
"$old_LD_LIBRARY_PATH") ;;
* ) export LD_LIBRARY_PATH ;;
esac
+# Enforce strict data.
+case "$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
+
#
# 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