# 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" in
-*gcc*) ;; # pass
+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
+ 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
+*** 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.)
+
+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
+ ;;
*) # compile something small: taint.c is fine for this.
+ ccversion=`cc -V | awk '/(Compaq|DEC) C/ {print $3}'`
# the main point is the '-v' flag of 'cc'.
- case "`cc -v -I. -c taint.c -o /tmp/taint$$.o 2>&1`" in
+ case "`cc -v -I. -c taint.c -o taint$$.o 2>&1`" in
*/gemc_cc*) # we have the new DEC GEM CC
_DEC_cc_style=new
;;
;;
esac
# cleanup
- rm -f /tmp/taint$$.o
+ rm -f taint$$.o
;;
esac
# be nauseatingly ANSI
-case "$cc" in
+case "`$cc -v 2>&1 | grep gcc`" in
*gcc*) ccflags="$ccflags -ansi"
;;
*) ccflags="$ccflags -std"
# we want optimisation
case "$optimize" in
-'') case "$cc" in
+'') case "`$cc -v 2>&1 | grep gcc`" in
*gcc*)
optimize='-O3' ;;
*) case "$_DEC_cc_style" in
*) if $test "X$optimize" = "X$undef"; then
lddlflags="$lddlflags -msym"
else
- lddlflags="$lddlflags $optimize -msym"
+ case "`/usr/sbin/sizer -v`" in
+ *4.0D*)
+ # QAR 56761: -O4 + .so may produce broken code,
+ # fixed in 4.0E or better.
+ ;;
+ *)
+ lddlflags="$lddlflags $optimize"
+ ;;
+ esac
+ # -msym: If using a sufficiently recent /sbin/loader,
+ # keep the module symbols with the modules.
+ lddlflags="$lddlflags -msym -std"
fi
- # -msym: If using a sufficiently recent /sbin/loader,
- # keep the module symbols with the modules.
;;
esac
# Yes, the above loses if gcc does not use the system linker.
# "-Uuseshrplib" prevents this default.
#
-# This or the glibpth change above breaks the build. Commented out
-# for this snapshot.
-#case "$_DEC_cc_style.$useshrplib" in
-# new.) useshrplib="$define" ;;
-#esac
+case "$_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="$ccflags -DNO_EFF_ONLY_OK"'
+ ;;
+esac
+
+# The off_t is already 8 bytes, so we do have largefileness.
+cat > UU/usethreads.cbu <<'EOCBU'
# This script UU/usethreads.cbu will get 'called-back' by Configure
# after it has prompted the user for whether to use threads.
-cat > UU/usethreads.cbu <<'EOCBU'
case "$usethreads" in
$define|true|[yY]*)
- # Threads interfaces changed with V4.0.
- case "`uname -r`" in
- *[123].*)
- libswanted="$libswanted pthreads mach exc c_r"
- ccflags="-threads $ccflags"
+ # Threads interfaces changed with V4.0.
+ case "`$cc -v 2>&1 | grep gcc`" in
+ *gcc*)ccflags="-D_REENTRANT $ccflags" ;;
+ *) case "`uname -r`" in
+ *[123].*) ccflags="-threads $ccflags" ;;
+ *) ccflags="-pthread $ccflags" ;;
+ esac
;;
- *)
- libswanted="$libswanted pthread exc"
- ccflags="-pthread $ccflags"
- ;;
- esac
+ esac
+ case "`uname -r`" in
+ *[123].*) libswanted="$libswanted pthreads mach exc c_r" ;;
+ *) libswanted="$libswanted pthread exc" ;;
+ esac
- usemymalloc='n'
+ case "$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]*)
+ 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
+ ;;
+ esac
+ d_Gconvert='sprintf((b),"%.*Lg",(n),(x))'
;;
esac
EOCBU
+case "`/usr/sbin/sizer -v`" in
+*[1-4].0*) d_modfl=undef ;; # must wait till 5.0
+esac
+
#
# Unset temporary variables no more needed.
#
# * Set -Olimit to 3200 because perl_yylex.c got too big
# for the optimizer.
#
-
-
https://perl5.git.perl.org / perl5.git / blobdiff