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Allow Configure's d_attribut to be set from the command line
[metaconfig.git] / U / modified / d_attribut.U
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1?RCS: $Id: d_attribut.U,v 3.0.1.3 1995/01/30 14:33:45 ram Exp $
2?RCS:
3?RCS: Copyright (c) 1991-1993, 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 3.0.
10?RCS:
11?RCS: Original Author: Andy Dougherty <doughera@lafcol.lafayette.edu>
12?RCS:
13?RCS: $Log: d_attribut.U,v $
14?RCS: Revision 3.0.1.3 1995/01/30 14:33:45 ram
15?RCS: patch49: test C program now includes <stdio.h> (WED)
16?RCS:
17?RCS: Revision 3.0.1.2 1995/01/11 15:25:47 ram
18?RCS: patch45: fixed typo in the d_attribut variable (ADO)
19?RCS:
20?RCS: Revision 3.0.1.1 1994/10/29 16:08:55 ram
21?RCS: patch36: created by ADO
22?RCS:
23?MAKE:d_attribut: Myread Oldconfig cat cc ccflags rm Setvar contains
24?MAKE: -pick add $@ %<
25?S:d_attribut (d_attrib):
26?S: This variable conditionally defines HASATTRIBUTE, which
27?S: indicates the C compiler can check for function attributes,
28?S: such as printf formats.
29?S:.
30?C:HASATTRIBUTE ~ %< (GNUC_ATTRIBUTE_CHECK):
31?C: This symbol indicates the C compiler can check for function attributes,
32?C: such as printf formats. This is normally only supported by GNU cc.
33?C:.
34?H:?%<:#$d_attribut HASATTRIBUTE /**/
35?H:?%<:#ifndef HASATTRIBUTE
36?H:?%<:#ifdef __attribute__
37?H:?%<:#undef __attribute__
38?H:?%<:#endif
39?H:?%<:#define __attribute__(_arg_)
40?H:?%<:#endif
41?H:.
42?W:%<:__attribute__
43?LINT:set d_attribut
44?LINT:known __attribute__
45: Look for GNU-cc style attribute checking
cdbedeff
GA
46case "$d_attribut" in
47'')
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48echo " "
49echo "Checking whether your compiler can handle __attribute__ ..." >&4
50$cat >attrib.c <<'EOCP'
51#include <stdio.h>
62eece6b 52void croak (char* pat,...) __attribute__((__format__(__printf__,1,2),noreturn));
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53EOCP
54if $cc $ccflags -c attrib.c >attrib.out 2>&1 ; then
55 if $contains 'warning' attrib.out >/dev/null 2>&1; then
56 echo "Your C compiler doesn't fully support __attribute__."
57 val="$undef"
58 else
59 echo "Your C compiler supports __attribute__."
60 val="$define"
61 fi
62else
63 echo "Your C compiler doesn't seem to understand __attribute__ at all."
64 val="$undef"
65fi
cdbedeff
GA
66;;
67*) val="$d_attribut" ;;
68esac
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69set d_attribut
70eval $setvar
71$rm -f attrib*
72