gdb/acinclude.m4

   1 dnl written by Rob Savoye <rob@cygnus.com> for Cygnus Support
   2 dnl major rewriting for Tcl 7.5 by Don Libes <libes@nist.gov>
   3
   4 dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
   5 sinclude(../bfd/bfd.m4)
   6
   7 dnl This gets the standard macros
   8 sinclude(../config/acinclude.m4)
   9
  10 dnl This gets autoconf bugfixes
  11 sinclude(../config/override.m4)
  12
  13 sinclude(../config/gettext-sister.m4)
  14
  15 dnl For AC_LIB_HAVE_LINKFLAGS.
  16 sinclude(../config/lib-ld.m4)
  17 sinclude(../config/lib-prefix.m4)
  18 sinclude(../config/lib-link.m4)
  19
  20 dnl For ACX_PKGVERSION and ACX_BUGURL.
  21 sinclude(../config/acx.m4)
  22
  23 dnl for TCL definitions
  24 sinclude(../config/tcl.m4)
  25
  26 #
  27 # Sometimes the native compiler is a bogus stub for gcc or /usr/ucb/cc. This
  28 # makes configure think it's cross compiling. If --target wasn't used, then
  29 # we can't configure, so something is wrong. We don't use the cache
  30 # here cause if somebody fixes their compiler install, we want this to work.
  31 AC_DEFUN([CY_AC_C_WORKS],
  32 [# If we cannot compile and link a trivial program, we can't expect anything to work
  33 AC_MSG_CHECKING(whether the compiler ($CC) actually works)
  34 AC_TRY_COMPILE(, [/* don't need anything here */],
  35         c_compiles=yes, c_compiles=no)
  36
  37 AC_TRY_LINK(, [/* don't need anything here */],
  38         c_links=yes, c_links=no)
  39
  40 if test x"${c_compiles}" = x"no" ; then
  41   AC_MSG_ERROR(the native compiler is broken and won't compile.)
  42 fi
  43
  44 if test x"${c_links}" = x"no" ; then
  45   AC_MSG_ERROR(the native compiler is broken and won't link.)
  46 fi
  47 AC_MSG_RESULT(yes)
  48 ])
  49
  50 ## ----------------------------------------- ##
  51 ## ANSIfy the C compiler whenever possible.  ##
  52 ## From Franc,ois Pinard                     ##
  53 ## ----------------------------------------- ##
  54
  55 # Copyright (C) 1996, 1997, 1999, 2000, 2001, 2008 Free Software Foundation, Inc.
  56
  57 # This program is free software; you can redistribute it and/or modify
  58 # it under the terms of the GNU General Public License as published by
  59 # the Free Software Foundation; either version 2, or (at your option)
  60 # any later version.
  61
  62 # This program is distributed in the hope that it will be useful,
  63 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  64 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  65 # GNU General Public License for more details.
  66
  67 # You should have received a copy of the GNU General Public License
  68 # along with this program; if not, write to the Free Software
  69 # Foundation, Inc., 51 Franklin Street, Fifth Floor,
  70 # Boston, MA 02110-1301, USA.
  71
  72 # serial 1
  73
  74 # @defmac AC_PROG_CC_STDC
  75 # @maindex PROG_CC_STDC
  76 # @ovindex CC
  77 # If the C compiler in not in ANSI C mode by default, try to add an option
  78 # to output variable @code{CC} to make it so.  This macro tries various
  79 # options that select ANSI C on some system or another.  It considers the
  80 # compiler to be in ANSI C mode if it handles function prototypes correctly.
  81 #
  82 # If you use this macro, you should check after calling it whether the C
  83 # compiler has been set to accept ANSI C; if not, the shell variable
  84 # @code{am_cv_prog_cc_stdc} is set to @samp{no}.  If you wrote your source
  85 # code in ANSI C, you can make an un-ANSIfied copy of it by using the
  86 # program @code{ansi2knr}, which comes with Ghostscript.
  87 # @end defmac
  88
  89 AC_DEFUN([AM_PROG_CC_STDC],
  90 [AC_REQUIRE([AC_PROG_CC])
  91 AC_BEFORE([$0], [AC_C_INLINE])
  92 AC_BEFORE([$0], [AC_C_CONST])
  93 dnl Force this before AC_PROG_CPP.  Some cpp's, eg on HPUX, require
  94 dnl a magic option to avoid problems with ANSI preprocessor commands
  95 dnl like #elif.
  96 dnl FIXME: can't do this because then AC_AIX won't work due to a
  97 dnl circular dependency.
  98 dnl AC_BEFORE([$0], [AC_PROG_CPP])
  99 AC_MSG_CHECKING([for ${CC-cc} option to accept ANSI C])
 100 AC_CACHE_VAL(am_cv_prog_cc_stdc,
 101 [am_cv_prog_cc_stdc=no
 102 ac_save_CC="$CC"
 103 # Don't try gcc -ansi; that turns off useful extensions and
 104 # breaks some systems' header files.
 105 # AIX                   -qlanglvl=ansi
 106 # Ultrix and OSF/1      -std1
 107 # HP-UX 10.20 and later -Ae
 108 # HP-UX older versions  -Aa -D_HPUX_SOURCE
 109 # SVR4                  -Xc -D__EXTENSIONS__
 110 for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
 111 do
 112   CC="$ac_save_CC $ac_arg"
 113   AC_TRY_COMPILE(
 114 [#include <stdarg.h>
 115 #include <stdio.h>
 116 #include <sys/types.h>
 117 #include <sys/stat.h>
 118 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
 119 struct buf { int x; };
 120 FILE * (*rcsopen) (struct buf *, struct stat *, int);
 121 static char *e (p, i)
 122      char **p;
 123      int i;
 124 {
 125   return p[i];
 126 }
 127 static char *f (char * (*g) (char **, int), char **p, ...)
 128 {
 129   char *s;
 130   va_list v;
 131   va_start (v,p);
 132   s = g (p, va_arg (v,int));
 133   va_end (v);
 134   return s;
 135 }
 136 int test (int i, double x);
 137 struct s1 {int (*f) (int a);};
 138 struct s2 {int (*f) (double a);};
 139 int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
 140 int argc;
 141 char **argv;
 142 ], [
 143 return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
 144 ],
 145 [am_cv_prog_cc_stdc="$ac_arg"; break])
 146 done
 147 CC="$ac_save_CC"
 148 ])
 149 if test -z "$am_cv_prog_cc_stdc"; then
 150   AC_MSG_RESULT([none needed])
 151 else
 152   AC_MSG_RESULT([$am_cv_prog_cc_stdc])
 153 fi
 154 case "x$am_cv_prog_cc_stdc" in
 155   x|xno) ;;
 156   *) CC="$CC $am_cv_prog_cc_stdc" ;;
 157 esac
 158 ])
 159
 160 dnl From Bruno Haible.
 161
 162 AC_DEFUN([AM_ICONV],
 163 [
 164   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
 165   dnl those with the standalone portable GNU libiconv installed).
 166
 167   AC_ARG_WITH([libiconv-prefix],
 168 [  --with-libiconv-prefix=DIR  search for libiconv in DIR/include and DIR/lib], [
 169     for dir in `echo "$withval" | tr : ' '`; do
 170       if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
 171       if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
 172     done
 173    ])
 174
 175   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
 176     am_cv_func_iconv="no, consider installing GNU libiconv"
 177     am_cv_lib_iconv=no
 178     AC_TRY_LINK([#include <stdlib.h>
 179 #include <iconv.h>],
 180       [iconv_t cd = iconv_open("","");
 181        iconv(cd,NULL,NULL,NULL,NULL);
 182        iconv_close(cd);],
 183       am_cv_func_iconv=yes)
 184     if test "$am_cv_func_iconv" != yes; then
 185       am_save_LIBS="$LIBS"
 186       LIBS="$LIBS -liconv"
 187       AC_TRY_LINK([#include <stdlib.h>
 188 #include <iconv.h>],
 189         [iconv_t cd = iconv_open("","");
 190          iconv(cd,NULL,NULL,NULL,NULL);
 191          iconv_close(cd);],
 192         am_cv_lib_iconv=yes
 193         am_cv_func_iconv=yes)
 194       LIBS="$am_save_LIBS"
 195     fi
 196   ])
 197   if test "$am_cv_func_iconv" = yes; then
 198     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 199     AC_MSG_CHECKING([for iconv declaration])
 200     AC_CACHE_VAL(am_cv_proto_iconv, [
 201       AC_TRY_COMPILE([
 202 #include <stdlib.h>
 203 #include <iconv.h>
 204 extern
 205 #ifdef __cplusplus
 206 "C"
 207 #endif
 208 #if defined(__STDC__) || defined(__cplusplus)
 209 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 210 #else
 211 size_t iconv();
 212 #endif
 213 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
 214       am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
 215     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
 216     AC_MSG_RESULT([$]{ac_t:-
 217          }[$]am_cv_proto_iconv)
 218     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
 219       [Define as const if the declaration of iconv() needs const.])
 220   fi
 221   LIBICONV=
 222   if test "$am_cv_lib_iconv" = yes; then
 223     LIBICONV="-liconv"
 224   fi
 225   AC_SUBST(LIBICONV)
 226 ])
 227
 228 dnl written by Guido Draheim <guidod@gmx.de>, original by Alexandre Oliva
 229 dnl Version 1.3 (2001/03/02)
 230 dnl source http://www.gnu.org/software/ac-archive/Miscellaneous/ac_define_dir.html
 231
 232 AC_DEFUN([AC_DEFINE_DIR], [
 233   test "x$prefix" = xNONE && prefix="$ac_default_prefix"
 234   test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
 235   ac_define_dir=`eval echo [$]$2`
 236   ac_define_dir=`eval echo [$]ac_define_dir`
 237   ifelse($3, ,
 238     AC_DEFINE_UNQUOTED($1, "$ac_define_dir"),
 239     AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
 240 ])
 241
 242 dnl See whether we need a declaration for a function.
 243 dnl The result is highly dependent on the INCLUDES passed in, so make sure
 244 dnl to use a different cache variable name in this macro if it is invoked
 245 dnl in a different context somewhere else.
 246 dnl gcc_AC_CHECK_DECL(SYMBOL,
 247 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
 248 AC_DEFUN([gcc_AC_CHECK_DECL],
 249 [AC_MSG_CHECKING([whether $1 is declared])
 250 AC_CACHE_VAL(gcc_cv_have_decl_$1,
 251 [AC_TRY_COMPILE([$4],
 252 [#ifndef $1
 253 char *(*pfn) = (char *(*)) $1 ;
 254 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
 255 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
 256   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
 257 else
 258   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
 259 fi
 260 ])dnl
 261
 262 dnl Check multiple functions to see whether each needs a declaration.
 263 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
 264 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
 265 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
 266 AC_DEFUN([gcc_AC_CHECK_DECLS],
 267 [for ac_func in $1
 268 do
 269 changequote(, )dnl
 270   ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 271 changequote([, ])dnl
 272 gcc_AC_CHECK_DECL($ac_func,
 273   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
 274   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
 275 dnl It is possible that the include files passed in here are local headers
 276 dnl which supply a backup declaration for the relevant prototype based on
 277 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
 278 dnl will always return success.  E.g. see libiberty.h's handling of
 279 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
 280 dnl 1 so that any local headers used do not provide their own prototype
 281 dnl during this test.
 282 #undef $ac_tr_decl
 283 #define $ac_tr_decl 1
 284   $4
 285 )
 286 done
 287 dnl Automatically generate config.h entries via autoheader.
 288 if test x = y ; then
 289   patsubst(translit([$1], [a-z], [A-Z]), [\w+],
 290     [AC_DEFINE([HAVE_DECL_\&], 1,
 291       [Define to 1 if we found this declaration otherwise define to 0.])])dnl
 292 fi
 293 ])
 294
 295 dnl Find the location of the private Tcl headers
 296 dnl When Tcl is installed, this is TCL_INCLUDE_SPEC/tcl-private/generic
 297 dnl When Tcl is in the build tree, this is not needed.
 298 dnl
 299 dnl Note: you must use first use SC_LOAD_TCLCONFIG!
 300 AC_DEFUN([CY_AC_TCL_PRIVATE_HEADERS], [
 301   AC_MSG_CHECKING([for Tcl private headers])
 302   private_dir=""
 303   dir=`echo ${TCL_INCLUDE_SPEC}/tcl-private/generic | sed -e s/-I//`
 304   if test -f ${dir}/tclInt.h ; then
 305     private_dir=${dir}
 306   fi
 307
 308   if test x"${private_dir}" = x; then
 309     AC_ERROR(could not find private Tcl headers)
 310   else
 311     TCL_PRIVATE_INCLUDE="-I${private_dir}"
 312     AC_MSG_RESULT(${private_dir})
 313   fi
 314 ])
 315
 316 dnl Find the location of the private Tk headers
 317 dnl When Tk is installed, this is TK_INCLUDE_SPEC/tk-private/generic
 318 dnl When Tk is in the build tree, this not needed.
 319 dnl
 320 dnl Note: you must first use SC_LOAD_TKCONFIG
 321 AC_DEFUN([CY_AC_TK_PRIVATE_HEADERS], [
 322   AC_MSG_CHECKING([for Tk private headers])
 323   private_dir=""
 324   dir=`echo ${TK_INCLUDE_SPEC}/tk-private/generic | sed -e s/-I//`
 325   if test -f ${dir}/tkInt.h; then
 326     private_dir=${dir}
 327   fi
 328
 329   if test x"${private_dir}" = x; then
 330     AC_ERROR(could not find Tk private headers)
 331   else
 332     TK_PRIVATE_INCLUDE="-I${private_dir}"
 333     AC_MSG_RESULT(${private_dir})
 334   fi
 335 ])