3 ?RCS: Copyright (c) 2000, Jarkko Hietaniemi
5 ?RCS: You may redistribute only under the terms of the Artistic Licence,
6 ?RCS: as specified in the README file that comes with the distribution.
7 ?RCS: You may reuse parts of this distribution only within the terms of
8 ?RCS: that same Artistic Licence; a copy of which may be found at the root
9 ?RCS: of the source tree for dist 3.0.
11 ?MAKE:gccversion gccosandvers: cat cpp rm +cc \
12 Mcc Myread Guess Options Oldconfig Loc osname osvers run
13 ?MAKE: -pick add $@ %<
15 ?S: If GNU cc (gcc) is used, this variable holds '1' or '2' to
16 ?S: indicate whether the compiler is version 1 or 2. This is used in
17 ?S: setting some of the default cflags. It is set to '' if not gcc.
20 ?S: If GNU cc (gcc) is used, this variable the operating system and
21 ?S: version used to compile the gcc. It is set to '' if not gcc,
22 ?S: or if nothing useful can be parsed as the os version.
31 ?LINT:extern locincpth
35 ?LINT:change locincpth
36 ?X: Check if they have gcc in any guise.
38 echo "Checking for GNU cc in disguise and/or its version number..." >&4
44 printf("%s\n", __VERSION__);
52 if $cc -o try $ccflags $ldflags try.c; then
53 gccversion=`$run ./try`
55 '') echo "You are not using GNU cc." ;;
56 *) echo "You are using GNU cc $gccversion."
62 echo "*** WHOA THERE!!! ***" >&4
63 echo " Your C compiler \"$cc\" doesn't seem to be working!" >&4
64 ?X: using -K will prevent aborting--maybe they're cross compiling?
67 echo " You'd better start hunting for one and let me know about it." >&4
74 1*) cpp=`./loc gcc-cpp $cpp $pth` ;;
77 '') gccosandvers='' ;;
78 *) gccshortvers=`echo "$gccversion"|sed 's/ .*//'`
79 gccosandvers=`$cc -v 2>&1|grep '/specs$'|sed "s!.*/[^-/]*-[^-/]*-\([^-/]*\)/$gccshortvers/specs!\1!"`
81 case "$gccosandvers" in
82 $osname) gccosandvers='' ;; # linux gccs seem to have no linux osvers, grr
83 $osname$osvers) ;; # looking good
84 $osname*) cat <<EOM >&4
88 Your gcc has not been compiled for the exact release of
89 your operating system ($gccosandvers versus $osname$osvers).
91 In general it is a good idea to keep gcc synchronized with
92 the operating system because otherwise serious problems
93 may ensue when trying to compile software, like Perl.
95 I'm trying to be optimistic here, though, and will continue.
96 If later during the configuration and build icky compilation
97 problems appear (headerfile conflicts being the most common
98 manifestation), I suggest reinstalling the gcc to match
99 your operating system release.
103 *) gccosandvers='' ;; # failed to parse, better be silent
111 # gcc 3.1 complains about adding -Idirectories that it already knows about,
112 # so we will take those off from locincpth.
113 case "$gccversion" in
115 echo "main(){}">try.c
116 for incdir in `$cc -v -c try.c 2>&1 | \
117 sed '1,/^#include <\.\.\.>/d;/^End of search list/,$d;s/^ //'` ; do
118 locincpth=`echo $locincpth | sed s!$incdir!!`