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1 | ?RCS: $Id: gccvers.U 13 2006-08-28 16:48:29Z rmanfredi $ |
2 | ?RCS: | |
3 | ?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi | |
4 | ?RCS: | |
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 4.0. | |
10 | ?RCS: | |
11 | ?RCS: Copyright (c) 2000, Jarkko Hietaniemi | |
12 | ?RCS: | |
13 | ?MAKE:gccversion gccosandvers: cat cpp rm +cc \ | |
14 | Myread Guess Options Oldconfig Loc osname osvers grep run ccname | |
15 | ?MAKE: -pick add $@ %< | |
16 | ?S:gccversion: | |
17 | ?S: If GNU cc (gcc) is used, this variable holds '1' or '3' (for instance) | |
18 | ?S: to indicate whether the compiler is version 1 or 3. This is used in | |
19 | ?S: setting some of the default cflags. It is set to '' if not gcc. | |
20 | ?S:. | |
21 | ?S:gccosandvers: | |
22 | ?S: If GNU cc (gcc) is used, this variable the operating system and | |
23 | ?S: version used to compile the gcc. It is set to '' if not gcc, | |
24 | ?S: or if nothing useful can be parsed as the os version. | |
25 | ?S:. | |
26 | ?T:gccshortvers incdir d | |
27 | ?F:!try.c !try | |
28 | ?LINT:extern locincpth ccflags ldflags | |
29 | ?LINT:change locincpth ccname cpp | |
30 | : Check whether they have gcc in any guise. | |
31 | echo " " | |
32 | echo "Checking for GNU cc in disguise and/or its version number..." >&4 | |
33 | $cat >try.c <<EOM | |
34 | #include <stdio.h> | |
35 | int main() { | |
36 | #ifdef __GNUC__ | |
37 | #ifdef __VERSION__ | |
38 | printf("%s\n", __VERSION__); | |
39 | #else | |
40 | printf("%s\n", "1"); | |
41 | #endif | |
42 | #endif | |
43 | exit(0); | |
44 | } | |
45 | EOM | |
46 | if $cc -o try $ccflags $ldflags try.c >/dev/null 2>&1; then | |
47 | gccversion=`$run ./try` | |
48 | case "$gccversion" in | |
49 | '') echo "You are not using GNU cc." ;; | |
50 | *) echo "You are using GNU cc $gccversion." | |
51 | ccname=gcc | |
52 | ;; | |
53 | esac | |
54 | else | |
55 | echo " " | |
56 | echo "*** WHOA THERE!!! ***" >&4 | |
57 | echo " Your C compiler \"$cc\" doesn't seem to be working!" >&4 | |
58 | ?X: using -K will prevent aborting--maybe they're cross compiling? | |
59 | case "$knowitall" in | |
60 | '') | |
61 | echo " You'd better start hunting for one and let me know about it." >&4 | |
62 | exit 1 | |
63 | ;; | |
64 | esac | |
65 | fi | |
66 | $rm -f try try.* | |
67 | case "$gccversion" in | |
68 | 1*) cpp=`./loc gcc-cpp $cpp $pth` ;; | |
69 | esac | |
70 | case "$gccversion" in | |
71 | '') gccosandvers='' ;; | |
72 | *) gccshortvers=`echo "$gccversion"|sed 's/ .*//'` | |
73 | gccosandvers=`$cc -v 2>&1 | \ | |
74 | $grep '/specs$'|sed "s!.*/[^-/]*-[^-/]*-\([^-/]*\)/$gccshortvers/specs!\1!"` | |
75 | gccshortvers='' | |
76 | case "$gccosandvers" in | |
77 | $osname) gccosandvers='' ;; # linux gccs seem to have no linux osvers, grr | |
78 | $osname$osvers) ;; # looking good | |
79 | $osname*) cat <<EOM >&4 | |
80 | ||
81 | *** WHOA THERE!!! *** | |
82 | ||
83 | Your gcc has not been compiled for the exact release of | |
84 | your operating system ($gccosandvers versus $osname$osvers). | |
85 | ||
86 | In general it is a good idea to keep gcc synchronized with | |
87 | the operating system because otherwise serious problems | |
88 | may ensue when trying to compile software, like Perl. | |
89 | ||
90 | I'm trying to be optimistic here, though, and will continue. | |
91 | If later during the configuration and build icky compilation | |
92 | problems appear (headerfile conflicts being the most common | |
93 | manifestation), I suggest reinstalling the gcc to match | |
94 | your operating system release. | |
95 | ||
96 | EOM | |
97 | ;; | |
98 | *) gccosandvers='' ;; # failed to parse, better be silent | |
99 | esac | |
100 | ;; | |
101 | esac | |
102 | case "$ccname" in | |
103 | '') ccname="$cc" ;; | |
104 | esac | |
105 | ||
106 | : gcc 3.1 complains about adding -Idirectories that it already knows about, | |
107 | : so we will take those off from locincpth. | |
108 | case "$gccversion" in | |
109 | 3*) | |
110 | echo "main(){}">try.c | |
111 | for incdir in `$cc -v -c try.c 2>&1 | \ | |
112 | sed '1,/^#include <\.\.\.>/d;/^End of search list/,$d;s/^ //'` ; do | |
113 | locincpth=`echo $locincpth | sed s!$incdir!!` | |
114 | done | |
115 | $rm -f try try.* | |
116 | esac | |
117 |