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https://github.com/pmret/gcc-papermario.git
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34 lines
822 B
Plaintext
34 lines
822 B
Plaintext
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dnl See whether we need a declaration for a function.
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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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#ifndef HAVE_RINDEX
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#define rindex strrchr
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#endif
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#ifndef HAVE_INDEX
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#define index strchr
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#endif],
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[char *(*pfn) = (char *(*)) $1],
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gcc_cv_decl_needed_$1=no, gcc_cv_decl_needed_$1=yes)])
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AC_MSG_RESULT($gcc_cv_decl_needed_$1)
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if test $gcc_cv_decl_needed_$1 = yes; then
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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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fi
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])dnl
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