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fd1a35d0 JH |
1 | ?RCS: $Id$ |
2 | ?RCS: | |
3 | ?RCS: Copyright (c) 2000, Jarkko Hietaniemi | |
5dcc3580 | 4 | ?RCS: |
fd1a35d0 JH |
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. | |
10 | ?RCS: | |
4087c32b | 11 | ?MAKE:gccversion gccosandvers gccansipedantic: cat cpp rm +cc \ |
0f00356b | 12 | Mcc Myread Guess Options Oldconfig Loc osname osvers run |
fd1a35d0 JH |
13 | ?MAKE: -pick add $@ %< |
14 | ?S:gccversion: | |
5c7d75a6 | 15 | ?S: If GNU cc (gcc) is used, this variable holds '1' or '2' to |
fd1a35d0 JH |
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. | |
18 | ?S:. | |
5fc71efb | 19 | ?S:gccosandvers: |
4087c32b MB |
20 | ?S: If GNU cc (gcc) is used, this variable holds the operating system |
21 | ?S: and version used to compile gcc. It is set to '' if not gcc, | |
fcc4de7b | 22 | ?S: or if nothing useful can be parsed as the os version. |
5fc71efb | 23 | ?S:. |
4087c32b MB |
24 | ?S:gccansipedantic: |
25 | ?S: If GNU cc (gcc) is used, this variable will enable (if set) the | |
26 | ?S: -ansi and -pedantic ccflags for building core files (through | |
27 | ?S: cflags script). (See Porting/pumpkin.pod for full description). | |
28 | ?S:. | |
0065f4af MB |
29 | ?D:gccversion='' |
30 | ?D:gccansipedantic='' | |
559accf2 | 31 | ?T:gccshortvers |
b2fa012f | 32 | ?T:incdir |
bf7497fb | 33 | ?T:warn |
0065f4af | 34 | ?F:!try |
fd1a35d0 | 35 | ?LINT:change cpp |
77506990 | 36 | ?LINT:extern ccflags |
fd1a35d0 | 37 | ?LINT:extern ldflags |
b2fa012f | 38 | ?LINT:extern locincpth |
3bb42500 | 39 | ?LINT:extern ccname |
b2fa012f JH |
40 | ?LINT:change ccname |
41 | ?LINT:change locincpth | |
5c7d75a6 | 42 | ?X: Check if they have gcc in any guise. |
0065f4af | 43 | : Check if we are using GNU gcc and what its version is |
fd1a35d0 JH |
44 | echo " " |
45 | echo "Checking for GNU cc in disguise and/or its version number..." >&4 | |
0f00356b | 46 | $cat >try.c <<EOM |
fd1a35d0 JH |
47 | #include <stdio.h> |
48 | int main() { | |
a9c4d48e | 49 | #if defined(__GNUC__) && !defined(__INTEL_COMPILER) |
fd1a35d0 JH |
50 | #ifdef __VERSION__ |
51 | printf("%s\n", __VERSION__); | |
52 | #else | |
53 | printf("%s\n", "1"); | |
54 | #endif | |
55 | #endif | |
a4ad2925 | 56 | return(0); |
fd1a35d0 JH |
57 | } |
58 | EOM | |
0f00356b JH |
59 | if $cc -o try $ccflags $ldflags try.c; then |
60 | gccversion=`$run ./try` | |
fd1a35d0 JH |
61 | case "$gccversion" in |
62 | '') echo "You are not using GNU cc." ;; | |
63 | *) echo "You are using GNU cc $gccversion." | |
5c7d75a6 | 64 | ccname=gcc |
fd1a35d0 JH |
65 | ;; |
66 | esac | |
67 | else | |
68 | echo " " | |
69 | echo "*** WHOA THERE!!! ***" >&4 | |
70 | echo " Your C compiler \"$cc\" doesn't seem to be working!" >&4 | |
71 | ?X: using -K will prevent aborting--maybe they're cross compiling? | |
72 | case "$knowitall" in | |
73 | '') | |
74 | echo " You'd better start hunting for one and let me know about it." >&4 | |
75 | exit 1 | |
76 | ;; | |
77 | esac | |
78 | fi | |
0f00356b | 79 | $rm -f try try.* |
fd1a35d0 JH |
80 | case "$gccversion" in |
81 | 1*) cpp=`./loc gcc-cpp $cpp $pth` ;; | |
82 | esac | |
5fc71efb KS |
83 | case "$gccversion" in |
84 | '') gccosandvers='' ;; | |
559accf2 JH |
85 | *) gccshortvers=`echo "$gccversion"|sed 's/ .*//'` |
86 | gccosandvers=`$cc -v 2>&1|grep '/specs$'|sed "s!.*/[^-/]*-[^-/]*-\([^-/]*\)/$gccshortvers/specs!\1!"` | |
87 | gccshortvers='' | |
5fc71efb | 88 | case "$gccosandvers" in |
fcc4de7b JH |
89 | $osname) gccosandvers='' ;; # linux gccs seem to have no linux osvers, grr |
90 | $osname$osvers) ;; # looking good | |
5fc71efb KS |
91 | $osname*) cat <<EOM >&4 |
92 | ||
93 | *** WHOA THERE!!! *** | |
94 | ||
95 | Your gcc has not been compiled for the exact release of | |
96 | your operating system ($gccosandvers versus $osname$osvers). | |
97 | ||
98 | In general it is a good idea to keep gcc synchronized with | |
99 | the operating system because otherwise serious problems | |
100 | may ensue when trying to compile software, like Perl. | |
101 | ||
102 | I'm trying to be optimistic here, though, and will continue. | |
103 | If later during the configuration and build icky compilation | |
fcc4de7b JH |
104 | problems appear (headerfile conflicts being the most common |
105 | manifestation), I suggest reinstalling the gcc to match | |
5fc71efb KS |
106 | your operating system release. |
107 | ||
108 | EOM | |
109 | ;; | |
1c7fa146 | 110 | *) gccosandvers='' ;; # failed to parse, better be silent |
5fc71efb KS |
111 | esac |
112 | ;; | |
113 | esac | |
05c8895a JH |
114 | case "$ccname" in |
115 | '') ccname="$cc" ;; | |
116 | esac | |
fd1a35d0 | 117 | |
a7eb1db8 | 118 | # gcc 3.* complain about adding -Idirectories that they already know about, |
d6872425 JH |
119 | # so we will take those off from locincpth. |
120 | case "$gccversion" in | |
121 | 3*) | |
122 | echo "main(){}">try.c | |
a7eb1db8 MB |
123 | for incdir in $locincpth; do |
124 | warn=`$cc $ccflags -I$incdir -c try.c 2>&1 | \ | |
5c7d75a6 | 125 | grep '^c[cp]p*[01]: warning: changing search order '` |
a7eb1db8 MB |
126 | if test "X$warn" != X; then |
127 | locincpth=`echo " $locincpth " | sed "s! $incdir ! !"` | |
128 | fi | |
d6872425 JH |
129 | done |
130 | $rm -f try try.* | |
131 | esac | |
7ab230d2 | 132 |