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 sinclude(acx_configure_dir.m4)
   5
   6 dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
   7 sinclude(../bfd/bfd.m4)
   8
   9 dnl This gets the standard macros
  10 sinclude(../config/acinclude.m4)
  11
  12 dnl This gets autoconf bugfixes
  13 sinclude(../config/override.m4)
  14
  15 sinclude(../config/gettext-sister.m4)
  16
  17 dnl For AC_LIB_HAVE_LINKFLAGS.
  18 sinclude(../config/lib-ld.m4)
  19 sinclude(../config/lib-prefix.m4)
  20 sinclude(../config/lib-link.m4)
  21
  22 dnl For ACX_PKGVERSION and ACX_BUGURL.
  23 sinclude(../config/acx.m4)
  24
  25 dnl for TCL definitions
  26 sinclude(../config/tcl.m4)
  27
  28 dnl For dependency tracking macros.
  29 sinclude([../config/depstand.m4])
  30
  31 dnl For AM_LC_MESSAGES
  32 sinclude([../config/lcmessage.m4])
  33
  34 dnl For AM_LANGINFO_CODESET.
  35 sinclude([../config/codeset.m4])
  36
  37 sinclude([../config/zlib.m4])
  38
  39 ## ----------------------------------------- ##
  40 ## ANSIfy the C compiler whenever possible.  ##
  41 ## From Franc,ois Pinard                     ##
  42 ## ----------------------------------------- ##
  43
  44 # Copyright (C) 1996, 1997, 1999, 2000, 2001, 2008, 2009
  45 #  Free Software Foundation, Inc.
  46
  47 # This program is free software; you can redistribute it and/or modify
  48 # it under the terms of the GNU General Public License as published by
  49 # the Free Software Foundation; either version 2, or (at your option)
  50 # any later version.
  51
  52 # This program is distributed in the hope that it will be useful,
  53 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  54 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  55 # GNU General Public License for more details.
  56
  57 # You should have received a copy of the GNU General Public License
  58 # along with this program; if not, see <http://www.gnu.org/licenses/>.
  59
  60 # serial 1
  61
  62 # @defmac AC_PROG_CC_STDC
  63 # @maindex PROG_CC_STDC
  64 # @ovindex CC
  65 # If the C compiler in not in ANSI C mode by default, try to add an option
  66 # to output variable @code{CC} to make it so.  This macro tries various
  67 # options that select ANSI C on some system or another.  It considers the
  68 # compiler to be in ANSI C mode if it handles function prototypes correctly.
  69 #
  70 # If you use this macro, you should check after calling it whether the C
  71 # compiler has been set to accept ANSI C; if not, the shell variable
  72 # @code{am_cv_prog_cc_stdc} is set to @samp{no}.  If you wrote your source
  73 # code in ANSI C, you can make an un-ANSIfied copy of it by using the
  74 # program @code{ansi2knr}, which comes with Ghostscript.
  75 # @end defmac
  76
  77 AC_DEFUN([AM_PROG_CC_STDC],
  78 [AC_REQUIRE([AC_PROG_CC])
  79 AC_BEFORE([$0], [AC_C_INLINE])
  80 AC_BEFORE([$0], [AC_C_CONST])
  81 dnl Force this before AC_PROG_CPP.  Some cpp's, eg on HPUX, require
  82 dnl a magic option to avoid problems with ANSI preprocessor commands
  83 dnl like #elif.
  84 dnl FIXME: can't do this because then AC_AIX won't work due to a
  85 dnl circular dependency.
  86 dnl AC_BEFORE([$0], [AC_PROG_CPP])
  87 AC_MSG_CHECKING([for ${CC-cc} option to accept ANSI C])
  88 AC_CACHE_VAL(am_cv_prog_cc_stdc,
  89 [am_cv_prog_cc_stdc=no
  90 ac_save_CC="$CC"
  91 # Don't try gcc -ansi; that turns off useful extensions and
  92 # breaks some systems' header files.
  93 # AIX                   -qlanglvl=ansi
  94 # Ultrix and OSF/1      -std1
  95 # HP-UX 10.20 and later -Ae
  96 # HP-UX older versions  -Aa -D_HPUX_SOURCE
  97 # SVR4                  -Xc -D__EXTENSIONS__
  98 for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
  99 do
 100   CC="$ac_save_CC $ac_arg"
 101   AC_TRY_COMPILE(
 102 [#include <stdarg.h>
 103 #include <stdio.h>
 104 #include <sys/types.h>
 105 #include <sys/stat.h>
 106 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
 107 struct buf { int x; };
 108 FILE * (*rcsopen) (struct buf *, struct stat *, int);
 109 static char *e (p, i)
 110      char **p;
 111      int i;
 112 {
 113   return p[i];
 114 }
 115 static char *f (char * (*g) (char **, int), char **p, ...)
 116 {
 117   char *s;
 118   va_list v;
 119   va_start (v,p);
 120   s = g (p, va_arg (v,int));
 121   va_end (v);
 122   return s;
 123 }
 124 int test (int i, double x);
 125 struct s1 {int (*f) (int a);};
 126 struct s2 {int (*f) (double a);};
 127 int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
 128 int argc;
 129 char **argv;
 130 ], [
 131 return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
 132 ],
 133 [am_cv_prog_cc_stdc="$ac_arg"; break])
 134 done
 135 CC="$ac_save_CC"
 136 ])
 137 if test -z "$am_cv_prog_cc_stdc"; then
 138   AC_MSG_RESULT([none needed])
 139 else
 140   AC_MSG_RESULT([$am_cv_prog_cc_stdc])
 141 fi
 142 case "x$am_cv_prog_cc_stdc" in
 143   x|xno) ;;
 144   *) CC="$CC $am_cv_prog_cc_stdc" ;;
 145 esac
 146 ])
 147
 148 dnl Originally from Bruno Haible, but with some modifications
 149 dnl for the GDB project.
 150
 151 AC_DEFUN([AM_ICONV],
 152 [
 153   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
 154   dnl those with the standalone portable GNU libiconv installed).
 155
 156   AC_ARG_WITH([libiconv-prefix],
 157     AS_HELP_STRING([--with-libiconv-prefix=DIR], [search for libiconv in DIR/include and DIR/lib]), [
 158     for dir in `echo "$withval" | tr : ' '`; do
 159       if test -d $dir/include; then LIBICONV_INCLUDE="-I$dir/include"; fi
 160       if test -d $dir/lib; then LIBICONV_LIBDIR="-L$dir/lib"; fi
 161     done
 162    ])
 163
 164   BUILD_LIBICONV_LIBDIRS="../libiconv/lib/.libs ../libiconv/lib/_libs"
 165   BUILD_LIBICONV_INCLUDE="-I../libiconv/include"
 166
 167   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
 168     am_cv_func_iconv="no, consider installing GNU libiconv"
 169     am_cv_lib_iconv=no
 170     am_cv_use_build_libiconv=no
 171     am_cv_build_libiconv_path=
 172
 173     # If libiconv is part of the build tree, then try using it over
 174     # any system iconv.
 175     if test -d ../libiconv; then
 176       for lib_dir in $BUILD_LIBICONV_LIBDIRS; do
 177         am_save_LIBS="$LIBS"
 178         am_save_CPPFLAGS="$CPPFLAGS"
 179         LIBS="$LIBS $lib_dir/libiconv.a"
 180         CPPFLAGS="$CPPFLAGS $BUILD_LIBICONV_INCLUDE"
 181         AC_TRY_LINK([#include <stdlib.h>
 182 #include <iconv.h>],
 183           [iconv_t cd = iconv_open("","");
 184            iconv(cd,NULL,NULL,NULL,NULL);
 185            iconv_close(cd);],
 186           am_cv_use_build_libiconv=yes
 187           am_cv_build_libiconv_path=$lib_dir/libiconv.a
 188           am_cv_lib_iconv=yes
 189           am_cv_func_iconv=yes)
 190         LIBS="$am_save_LIBS"
 191         CPPFLAGS="$am_save_CPPFLAGS"
 192         if test "$am_cv_use_build_libiconv" = "yes"; then
 193           break
 194         fi
 195       done
 196     fi
 197
 198     # Next, try to find iconv in libc.
 199     if test "$am_cv_func_iconv" != yes; then
 200       AC_TRY_LINK([#include <stdlib.h>
 201 #include <iconv.h>],
 202         [iconv_t cd = iconv_open("","");
 203          iconv(cd,NULL,NULL,NULL,NULL);
 204          iconv_close(cd);],
 205         am_cv_func_iconv=yes)
 206     fi
 207
 208     # If iconv was not in libc, try -liconv.  In this case, arrange to
 209     # look in the libiconv prefix, if it was specified by the user.
 210     if test "$am_cv_func_iconv" != yes; then
 211       am_save_CPPFLAGS="$CPPFLAGS"
 212       am_save_LIBS="$LIBS"
 213       if test -n "$LIBICONV_INCLUDE"; then
 214         CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
 215         LIBS="$LIBS $LIBICONV_LIBDIR"
 216       fi
 217       LIBS="$LIBS -liconv"
 218       AC_TRY_LINK([#include <stdlib.h>
 219 #include <iconv.h>],
 220         [iconv_t cd = iconv_open("","");
 221          iconv(cd,NULL,NULL,NULL,NULL);
 222          iconv_close(cd);],
 223         am_cv_lib_iconv=yes
 224         am_cv_func_iconv=yes)
 225       LIBS="$am_save_LIBS"
 226       CPPFLAGS="$am_save_CPPFLAGS"
 227     fi
 228   ])
 229
 230   # Set the various flags based on the cache variables.  We can't rely
 231   # on the flags to remain set from the above code, due to caching.
 232   LIBICONV=
 233   if test "$am_cv_lib_iconv" = yes; then
 234     LIBICONV="-liconv"
 235   else
 236     LIBICONV_LIBDIR=
 237     LIBICONV_INCLUDE=
 238   fi
 239   if test "$am_cv_use_build_libiconv" = yes; then
 240     LIBICONV="$am_cv_build_libiconv_path"
 241     LIBICONV_LIBDIR=""
 242     LIBICONV_INCLUDE="$BUILD_LIBICONV_INCLUDE"
 243   fi
 244   CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
 245   LIBS="$LIBS $LIBICONV_LIBDIR $LIBICONV"
 246
 247   if test "$am_cv_func_iconv" = yes; then
 248     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 249     AC_MSG_CHECKING([for iconv declaration])
 250     AC_CACHE_VAL(am_cv_proto_iconv, [
 251       AC_TRY_COMPILE([
 252 #include <stdlib.h>
 253 #include <iconv.h>
 254 extern
 255 #ifdef __cplusplus
 256 "C"
 257 #endif
 258 #if defined(__STDC__) || defined(__cplusplus)
 259 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 260 #else
 261 size_t iconv();
 262 #endif
 263 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
 264       am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
 265     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
 266     AC_MSG_RESULT([$]{ac_t:-
 267          }[$]am_cv_proto_iconv)
 268     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
 269       [Define as const if the declaration of iconv() needs const.])
 270   fi
 271 ])
 272
 273 dnl written by Guido Draheim <guidod@gmx.de>, original by Alexandre Oliva
 274 dnl Version 1.3 (2001/03/02)
 275 dnl source http://www.gnu.org/software/ac-archive/Miscellaneous/ac_define_dir.html
 276
 277 AC_DEFUN([AC_DEFINE_DIR], [
 278   test "x$prefix" = xNONE && prefix="$ac_default_prefix"
 279   test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
 280   ac_define_dir=`eval echo [$]$2`
 281   ac_define_dir=`eval echo [$]ac_define_dir`
 282   ifelse($3, ,
 283     AC_DEFINE_UNQUOTED($1, "$ac_define_dir"),
 284     AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
 285 ])
 286
 287 dnl See whether we need a declaration for a function.
 288 dnl The result is highly dependent on the INCLUDES passed in, so make sure
 289 dnl to use a different cache variable name in this macro if it is invoked
 290 dnl in a different context somewhere else.
 291 dnl gcc_AC_CHECK_DECL(SYMBOL,
 292 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
 293 AC_DEFUN([gcc_AC_CHECK_DECL],
 294 [AC_MSG_CHECKING([whether $1 is declared])
 295 AC_CACHE_VAL(gcc_cv_have_decl_$1,
 296 [AC_TRY_COMPILE([$4],
 297 [#ifndef $1
 298 char *(*pfn) = (char *(*)) $1 ;
 299 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
 300 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
 301   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
 302 else
 303   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
 304 fi
 305 ])dnl
 306
 307 dnl Check multiple functions to see whether each needs a declaration.
 308 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
 309 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
 310 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
 311 AC_DEFUN([gcc_AC_CHECK_DECLS],
 312 [for ac_func in $1
 313 do
 314 changequote(, )dnl
 315   ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 316 changequote([, ])dnl
 317 gcc_AC_CHECK_DECL($ac_func,
 318   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
 319   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
 320 dnl It is possible that the include files passed in here are local headers
 321 dnl which supply a backup declaration for the relevant prototype based on
 322 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
 323 dnl will always return success.  E.g. see libiberty.h's handling of
 324 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
 325 dnl 1 so that any local headers used do not provide their own prototype
 326 dnl during this test.
 327 #undef $ac_tr_decl
 328 #define $ac_tr_decl 1
 329   $4
 330 )
 331 done
 332 dnl Automatically generate config.h entries via autoheader.
 333 if test x = y ; then
 334   patsubst(translit([$1], [a-z], [A-Z]), [\w+],
 335     [AC_DEFINE([HAVE_DECL_\&], 1,
 336       [Define to 1 if we found this declaration otherwise define to 0.])])dnl
 337 fi
 338 ])
 339
 340 dnl Find the location of the private Tcl headers
 341 dnl When Tcl is installed, this is TCL_INCLUDE_SPEC/tcl-private/generic
 342 dnl When Tcl is in the build tree, this is not needed.
 343 dnl
 344 dnl Note: you must use first use SC_LOAD_TCLCONFIG!
 345 AC_DEFUN([CY_AC_TCL_PRIVATE_HEADERS], [
 346   AC_MSG_CHECKING([for Tcl private headers])
 347   private_dir=""
 348   dir=`echo ${TCL_INCLUDE_SPEC}/tcl-private/generic | sed -e s/-I//`
 349   if test -f ${dir}/tclInt.h ; then
 350     private_dir=${dir}
 351   fi
 352
 353   if test x"${private_dir}" = x; then
 354     AC_ERROR(could not find private Tcl headers)
 355   else
 356     TCL_PRIVATE_INCLUDE="-I${private_dir}"
 357     AC_MSG_RESULT(${private_dir})
 358   fi
 359 ])
 360
 361 dnl Find the location of the private Tk headers
 362 dnl When Tk is installed, this is TK_INCLUDE_SPEC/tk-private/generic
 363 dnl When Tk is in the build tree, this not needed.
 364 dnl
 365 dnl Note: you must first use SC_LOAD_TKCONFIG
 366 AC_DEFUN([CY_AC_TK_PRIVATE_HEADERS], [
 367   AC_MSG_CHECKING([for Tk private headers])
 368   private_dir=""
 369   dir=`echo ${TK_INCLUDE_SPEC}/tk-private/generic | sed -e s/-I//`
 370   if test -f ${dir}/tkInt.h; then
 371     private_dir=${dir}
 372   fi
 373
 374   if test x"${private_dir}" = x; then
 375     AC_ERROR(could not find Tk private headers)
 376   else
 377     TK_PRIVATE_INCLUDE="-I${private_dir}"
 378     AC_MSG_RESULT(${private_dir})
 379   fi
 380 ])
 381
 382 dnl GDB_AC_DEFINE_RELOCATABLE([VARIABLE], [ARG-NAME], [SHELL-VARIABLE])
 383 dnl For use in processing directory values for --with-foo.
 384 dnl If the path in SHELL_VARIABLE is relative to the prefix, then the
 385 dnl result is relocatable, then this will define the C macro
 386 dnl VARIABLE_RELOCATABLE to 1; otherwise it is defined as 0.
 387 AC_DEFUN([GDB_AC_DEFINE_RELOCATABLE], [
 388   if test "x$exec_prefix" = xNONE || test "x$exec_prefix" = 'x${prefix}'; then
 389      if test "x$prefix" = xNONE; then
 390         test_prefix=/usr/local
 391      else
 392         test_prefix=$prefix
 393      fi
 394   else
 395      test_prefix=$exec_prefix
 396   fi
 397   value=0
 398   case [$3] in
 399      "${test_prefix}"|"${test_prefix}/"*|\
 400         '${exec_prefix}'|'${exec_prefix}/'*)
 401      value=1
 402      ;;
 403   esac
 404   AC_DEFINE_UNQUOTED([$1]_RELOCATABLE, $value, [Define if the $2 directory should be relocated when GDB is moved.])
 405 ])
 406
 407 dnl GDB_AC_WITH_DIR([VARIABLE], [ARG-NAME], [HELP], [DEFAULT])
 408 dnl Add a new --with option that defines a directory.
 409 dnl The result is stored in VARIABLE.  AC_DEFINE_DIR is called
 410 dnl on this variable, as is AC_SUBST.
 411 dnl ARG-NAME is the base name of the argument (without "--with").
 412 dnl HELP is the help text to use.
 413 dnl If the user's choice is relative to the prefix, then the
 414 dnl result is relocatable, then this will define the C macro
 415 dnl VARIABLE_RELOCATABLE to 1; otherwise it is defined as 0.
 416 dnl DEFAULT is the default value, which is used if the user
 417 dnl does not specify the argument.
 418 AC_DEFUN([GDB_AC_WITH_DIR], [
 419   AC_ARG_WITH([$2], AS_HELP_STRING([--with-][$2][=PATH], [$3]), [
 420     [$1]=$withval], [[$1]=[$4]])
 421   AC_DEFINE_DIR([$1], [$1], [$3])
 422   AC_SUBST([$1])
 423   GDB_AC_DEFINE_RELOCATABLE([$1], [$2], ${ac_define_dir})
 424   ])