# Local additions to Autoconf macros. # Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc. # François Pinard , 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 ] )