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Viewing changes to macros/need-declaration.m4

  • Committer: Bazaar Package Importer
  • Author(s): Joe Drew
  • Date: 2002-01-13 02:13:27 UTC
  • Revision ID: james.westby@ubuntu.com-20020113021327-dukaa4n50oykvrjg
Tags: upstream-0.9.6
Import upstream version 0.9.6

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macros/need-declaration.m4
 
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dnl See whether we need a declaration for a function.
 
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dnl GCC_NEED_DECLARATION(FUNCTION [, EXTRA-HEADER-FILES])
 
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AC_DEFUN([GCC_NEED_DECLARATION],
 
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[AC_MSG_CHECKING([whether $1 must be declared])
 
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AC_CACHE_VAL(gcc_cv_decl_needed_$1,
 
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[AC_TRY_COMPILE([
 
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#include <stdio.h>
 
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#ifdef HAVE_STRING_H
 
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#include <string.h>
 
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#else
 
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#ifdef HAVE_STRINGS_H
 
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#include <strings.h>
 
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#endif
 
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#endif
 
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#ifdef HAVE_STDLIB_H
 
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#include <stdlib.h>
 
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#endif
 
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#ifdef HAVE_UNISTD_H
 
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#include <unistd.h>
 
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#endif
 
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$2],
 
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[char *(*pfn) = (char *(*)) $1],
 
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eval "gcc_cv_decl_needed_$1=no", eval "gcc_cv_decl_needed_$1=yes")])
 
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if eval "test \"`echo '$gcc_cv_decl_needed_'$1`\" = yes"; then
 
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  AC_MSG_RESULT(yes)
 
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  gcc_need_declarations="$gcc_need_declarations $1"
 
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  gcc_tr_decl=NEED_DECLARATION_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 
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  AC_DEFINE_UNQUOTED($gcc_tr_decl)
 
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else
 
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  AC_MSG_RESULT(no)
 
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fi
 
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])dnl
 
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dnl Check multiple functions to see whether each needs a declaration.
 
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dnl GCC_NEED_DECLARATIONS(FUNCTION... [, EXTRA-HEADER-FILES])
 
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AC_DEFUN([GCC_NEED_DECLARATIONS],
 
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[for ac_func in $1
 
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do
 
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GCC_NEED_DECLARATION($ac_func, $2)
 
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done
 
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]
 
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)