# reset
_DEC_cc_style=
case "`$cc -v 2>&1 | grep cc`" in
-*gcc*) ;; # pass
+*gcc*) _gcc_version=`$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