| dnl aclocal.m4 generated automatically by aclocal 1.4-p4 |
| |
| dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc. |
| dnl This file is free software; the Free Software Foundation |
| dnl gives unlimited permission to copy and/or distribute it, |
| dnl with or without modifications, as long as this notice is preserved. |
| |
| dnl This program is distributed in the hope that it will be useful, |
| dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without |
| dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A |
| dnl PARTICULAR PURPOSE. |
| |
| |
| # serial 1 |
| |
| # @defmac AC_PROG_CC_STDC |
| # @maindex PROG_CC_STDC |
| # @ovindex CC |
| # If the C compiler in not in ANSI C mode by default, try to add an option |
| # to output variable @code{CC} to make it so. This macro tries various |
| # options that select ANSI C on some system or another. It considers the |
| # compiler to be in ANSI C mode if it handles function prototypes correctly. |
| # |
| # If you use this macro, you should check after calling it whether the C |
| # compiler has been set to accept ANSI C; if not, the shell variable |
| # @code{am_cv_prog_cc_stdc} is set to @samp{no}. If you wrote your source |
| # code in ANSI C, you can make an un-ANSIfied copy of it by using the |
| # program @code{ansi2knr}, which comes with Ghostscript. |
| # @end defmac |
| |
| AC_DEFUN(AM_PROG_CC_STDC, |
| [AC_REQUIRE([AC_PROG_CC]) |
| AC_BEFORE([$0], [AC_C_INLINE]) |
| AC_BEFORE([$0], [AC_C_CONST]) |
| dnl Force this before AC_PROG_CPP. Some cpp's, eg on HPUX, require |
| dnl a magic option to avoid problems with ANSI preprocessor commands |
| dnl like #elif. |
| dnl FIXME: can't do this because then AC_AIX won't work due to a |
| dnl circular dependency. |
| dnl AC_BEFORE([$0], [AC_PROG_CPP]) |
| AC_MSG_CHECKING(for ${CC-cc} option to accept ANSI C) |
| AC_CACHE_VAL(am_cv_prog_cc_stdc, |
| [am_cv_prog_cc_stdc=no |
| ac_save_CC="$CC" |
| # Don't try gcc -ansi; that turns off useful extensions and |
| # breaks some systems' header files. |
| # AIX -qlanglvl=ansi |
| # Ultrix and OSF/1 -std1 |
| # HP-UX -Aa -D_HPUX_SOURCE |
| # SVR4 -Xc -D__EXTENSIONS__ |
| for ac_arg in "" -qlanglvl=ansi -std1 "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__" |
| do |
| CC="$ac_save_CC $ac_arg" |
| AC_TRY_COMPILE( |
| [#include <stdarg.h> |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| /* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */ |
| struct buf { int x; }; |
| FILE * (*rcsopen) (struct buf *, struct stat *, int); |
| static char *e (p, i) |
| char **p; |
| int i; |
| { |
| return p[i]; |
| } |
| static char *f (char * (*g) (char **, int), char **p, ...) |
| { |
| char *s; |
| va_list v; |
| va_start (v,p); |
| s = g (p, va_arg (v,int)); |
| va_end (v); |
| return s; |
| } |
| int test (int i, double x); |
| struct s1 {int (*f) (int a);}; |
| struct s2 {int (*f) (double a);}; |
| int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int); |
| int argc; |
| char **argv; |
| ], [ |
| return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]; |
| ], |
| [am_cv_prog_cc_stdc="$ac_arg"; break]) |
| done |
| CC="$ac_save_CC" |
| ]) |
| if test -z "$am_cv_prog_cc_stdc"; then |
| AC_MSG_RESULT([none needed]) |
| else |
| AC_MSG_RESULT($am_cv_prog_cc_stdc) |
| fi |
| case "x$am_cv_prog_cc_stdc" in |
| x|xno) ;; |
| *) CC="$CC $am_cv_prog_cc_stdc" ;; |
| esac |
| ]) |
| |