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- # Local additions to Autoconf macros.
- # Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
- # Franτois Pinard <pinard@iro.umontreal.ca>, 1992.
-
- ## ------------------------------- ##
- ## Check for function prototypes. ##
- ## ------------------------------- ##
-
- AC_DEFUN(fp_C_PROTOTYPES,
- [AC_REQUIRE([fp_PROG_CC_STDC])
- AC_MSG_CHECKING([for function prototypes])
- if test "$ac_cv_prog_cc_stdc" != no; then
- AC_MSG_RESULT(yes)
- AC_DEFINE(PROTOTYPES)
- U= ANSI2KNR=
- else
- AC_MSG_RESULT(no)
- U=_ ANSI2KNR=./ansi2knr
- fi
- AC_SUBST(U)dnl
- AC_SUBST(ANSI2KNR)dnl
- ])
-
- ## ----------------------------------------- ##
- ## ANSIfy the C compiler whenever possible. ##
- ## ----------------------------------------- ##
-
- # @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 defines @code{__STDC__} to 1 and
- # 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{ac_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(fp_PROG_CC_STDC,
- [AC_MSG_CHECKING(for ${CC-cc} option to accept ANSI C)
- AC_CACHE_VAL(ac_cv_prog_cc_stdc,
- [ac_cv_prog_cc_stdc=no
- ac_save_CFLAGS="$CFLAGS"
- # 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
- for ac_arg in "" -qlanglvl=ansi -std1 "-Aa -D_HPUX_SOURCE" -Xc
- do
- CFLAGS="$ac_save_CFLAGS $ac_arg"
- AC_TRY_COMPILE(
- [#if !defined(__STDC__) || __STDC__ != 1
- choke me
- #endif
- ], [int test (int i, double x);
- struct s1 {int (*f) (int a);};
- struct s2 {int (*f) (double a);};],
- [ac_cv_prog_cc_stdc="$ac_arg"; break])
- done
- CFLAGS="$ac_save_CFLAGS"
- ])
- AC_MSG_RESULT($ac_cv_prog_cc_stdc)
- case "x$ac_cv_prog_cc_stdc" in
- x|xno) ;;
- *) CC="$CC $ac_cv_prog_cc_stdc" ;;
- esac
- ])
-
- ## --------------------------------------------------------- ##
- ## Use AC_PROG_INSTALL, supplementing it with INSTALL_SCRIPT ##
- ## substitution. ##
- ## --------------------------------------------------------- ##
-
- AC_DEFUN(fp_PROG_INSTALL,
- [AC_PROG_INSTALL
- test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL} -m 755'
- AC_SUBST(INSTALL_SCRIPT)dnl
- ])
-
-
- # Add --enable-maintainer-mode option to configure.
- AC_DEFUN(jm_MAINTAINER_MODE,
- [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
- dnl maintainer-mode is disabled by default
- AC_ARG_ENABLE(maintainer-mode,
- [ --enable-maintainer-mode enable make rules and dependencies not useful
- (and sometimes confusing) to the casual installer],
- USE_MAINTAINER_MODE=$enableval,
- USE_MAINTAINER_MODE=no)
- AC_MSG_RESULT($USE_MAINTAINER_MODE)
- if test $USE_MAINTAINER_MODE = yes; then
- MAINT=
- else
- MAINT='#M#'
- fi
- AC_SUBST(MAINT)dnl
- ]
- )
-