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 dnl For dependency tracking macros.
  27 sinclude([../config/depstand.m4])
  28
  29 dnl For AM_LC_MESSAGES
  30 sinclude([../config/lcmessage.m4])
  31
  32 dnl For AM_LANGINFO_CODESET.
  33 sinclude([../config/codeset.m4])
  34
  35 sinclude([../config/zlib.m4])
  36
  37 #
  38 # Sometimes the native compiler is a bogus stub for gcc or /usr/ucb/cc. This
  39 # makes configure think it's cross compiling. If --target wasn't used, then
  40 # we can't configure, so something is wrong. We don't use the cache
  41 # here cause if somebody fixes their compiler install, we want this to work.
  42 AC_DEFUN([CY_AC_C_WORKS],
  43 [# If we cannot compile and link a trivial program, we can't expect anything to work
  44 AC_MSG_CHECKING(whether the compiler ($CC) actually works)
  45 AC_TRY_COMPILE(, [/* don't need anything here */],
  46         c_compiles=yes, c_compiles=no)
  47
  48 AC_TRY_LINK(, [/* don't need anything here */],
  49         c_links=yes, c_links=no)
  50
  51 if test x"${c_compiles}" = x"no" ; then
  52   AC_MSG_ERROR(the native compiler is broken and won't compile.)
  53 fi
  54
  55 if test x"${c_links}" = x"no" ; then
  56   AC_MSG_ERROR(the native compiler is broken and won't link.)
  57 fi
  58 AC_MSG_RESULT(yes)
  59 ])
  60
  61 ## ----------------------------------------- ##
  62 ## ANSIfy the C compiler whenever possible.  ##
  63 ## From Franc,ois Pinard                     ##
  64 ## ----------------------------------------- ##
  65
  66 # Copyright (C) 1996, 1997, 1999, 2000, 2001, 2008, 2009
  67   Free Software Foundation, Inc.
  68
  69 # This program is free software; you can redistribute it and/or modify
  70 # it under the terms of the GNU General Public License as published by
  71 # the Free Software Foundation; either version 2, or (at your option)
  72 # any later version.
  73
  74 # This program is distributed in the hope that it will be useful,
  75 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  76 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  77 # GNU General Public License for more details.
  78
  79 # You should have received a copy of the GNU General Public License
  80 # along with this program; if not, write to the Free Software
  81 # Foundation, Inc., 51 Franklin Street, Fifth Floor,
  82 # Boston, MA 02110-1301, USA.
  83
  84 # serial 1
  85
  86 # @defmac AC_PROG_CC_STDC
  87 # @maindex PROG_CC_STDC
  88 # @ovindex CC
  89 # If the C compiler in not in ANSI C mode by default, try to add an option
  90 # to output variable @code{CC} to make it so.  This macro tries various
  91 # options that select ANSI C on some system or another.  It considers the
  92 # compiler to be in ANSI C mode if it handles function prototypes correctly.
  93 #
  94 # If you use this macro, you should check after calling it whether the C
  95 # compiler has been set to accept ANSI C; if not, the shell variable
  96 # @code{am_cv_prog_cc_stdc} is set to @samp{no}.  If you wrote your source
  97 # code in ANSI C, you can make an un-ANSIfied copy of it by using the
  98 # program @code{ansi2knr}, which comes with Ghostscript.
  99 # @end defmac
 100
 101 AC_DEFUN([AM_PROG_CC_STDC],
 102 [AC_REQUIRE([AC_PROG_CC])
 103 AC_BEFORE([$0], [AC_C_INLINE])
 104 AC_BEFORE([$0], [AC_C_CONST])
 105 dnl Force this before AC_PROG_CPP.  Some cpp's, eg on HPUX, require
 106 dnl a magic option to avoid problems with ANSI preprocessor commands
 107 dnl like #elif.
 108 dnl FIXME: can't do this because then AC_AIX won't work due to a
 109 dnl circular dependency.
 110 dnl AC_BEFORE([$0], [AC_PROG_CPP])
 111 AC_MSG_CHECKING([for ${CC-cc} option to accept ANSI C])
 112 AC_CACHE_VAL(am_cv_prog_cc_stdc,
 113 [am_cv_prog_cc_stdc=no
 114 ac_save_CC="$CC"
 115 # Don't try gcc -ansi; that turns off useful extensions and
 116 # breaks some systems' header files.
 117 # AIX                   -qlanglvl=ansi
 118 # Ultrix and OSF/1      -std1
 119 # HP-UX 10.20 and later -Ae
 120 # HP-UX older versions  -Aa -D_HPUX_SOURCE
 121 # SVR4                  -Xc -D__EXTENSIONS__
 122 for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
 123 do
 124   CC="$ac_save_CC $ac_arg"
 125   AC_TRY_COMPILE(
 126 [#include <stdarg.h>
 127 #include <stdio.h>
 128 #include <sys/types.h>
 129 #include <sys/stat.h>
 130 /* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
 131 struct buf { int x; };
 132 FILE * (*rcsopen) (struct buf *, struct stat *, int);
 133 static char *e (p, i)
 134      char **p;
 135      int i;
 136 {
 137   return p[i];
 138 }
 139 static char *f (char * (*g) (char **, int), char **p, ...)
 140 {
 141   char *s;
 142   va_list v;
 143   va_start (v,p);
 144   s = g (p, va_arg (v,int));
 145   va_end (v);
 146   return s;
 147 }
 148 int test (int i, double x);
 149 struct s1 {int (*f) (int a);};
 150 struct s2 {int (*f) (double a);};
 151 int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
 152 int argc;
 153 char **argv;
 154 ], [
 155 return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
 156 ],
 157 [am_cv_prog_cc_stdc="$ac_arg"; break])
 158 done
 159 CC="$ac_save_CC"
 160 ])
 161 if test -z "$am_cv_prog_cc_stdc"; then
 162   AC_MSG_RESULT([none needed])
 163 else
 164   AC_MSG_RESULT([$am_cv_prog_cc_stdc])
 165 fi
 166 case "x$am_cv_prog_cc_stdc" in
 167   x|xno) ;;
 168   *) CC="$CC $am_cv_prog_cc_stdc" ;;
 169 esac
 170 ])
 171
 172 dnl Originally from Bruno Haible, but with some modifications
 173 dnl for the GDB project.
 174
 175 AC_DEFUN([AM_ICONV],
 176 [
 177   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
 178   dnl those with the standalone portable GNU libiconv installed).
 179
 180   AC_ARG_WITH([libiconv-prefix],
 181     AS_HELP_STRING([--with-libiconv-prefix=DIR], [search for libiconv in DIR/include and DIR/lib]), [
 182     for dir in `echo "$withval" | tr : ' '`; do
 183       if test -d $dir/include; then LIBICONV_INCLUDE="-I$dir/include"; fi
 184       if test -d $dir/lib; then LIBICONV_LIBDIR="-L$dir/lib"; fi
 185     done
 186    ])
 187
 188   BUILD_LIBICONV_LIBDIRS="../libiconv/lib/.libs ../libiconv/lib/_libs"
 189   BUILD_LIBICONV_INCLUDE="-I../libiconv/include"
 190
 191   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
 192     am_cv_func_iconv="no, consider installing GNU libiconv"
 193     am_cv_lib_iconv=no
 194     am_cv_use_build_libiconv=no
 195     am_cv_build_libiconv_path=
 196
 197     # If libiconv is part of the build tree, then try using it over
 198     # any system iconv.
 199     if test -d ../libiconv; then
 200       for lib_dir in $BUILD_LIBICONV_LIBDIRS; do
 201         am_save_LIBS="$LIBS"
 202         am_save_CPPFLAGS="$CPPFLAGS"
 203         LIBS="$LIBS $lib_dir/libiconv.a"
 204         CPPFLAGS="$CPPFLAGS $BUILD_LIBICONV_INCLUDE"
 205         AC_TRY_LINK([#include <stdlib.h>
 206 #include <iconv.h>],
 207           [iconv_t cd = iconv_open("","");
 208            iconv(cd,NULL,NULL,NULL,NULL);
 209            iconv_close(cd);],
 210           am_cv_use_build_libiconv=yes
 211           am_cv_build_libiconv_path=$lib_dir/libiconv.a
 212           am_cv_lib_iconv=yes
 213           am_cv_func_iconv=yes)
 214         LIBS="$am_save_LIBS"
 215         CPPFLAGS="$am_save_CPPFLAGS"
 216         if test "$am_cv_use_build_libiconv" = "yes"; then
 217           break
 218         fi
 219       done
 220     fi
 221
 222     # Next, try to find iconv in libc.
 223     if test "$am_cv_func_iconv" != yes; then
 224       AC_TRY_LINK([#include <stdlib.h>
 225 #include <iconv.h>],
 226         [iconv_t cd = iconv_open("","");
 227          iconv(cd,NULL,NULL,NULL,NULL);
 228          iconv_close(cd);],
 229         am_cv_func_iconv=yes)
 230     fi
 231
 232     # If iconv was not in libc, try -liconv.  In this case, arrange to
 233     # look in the libiconv prefix, if it was specified by the user.
 234     if test "$am_cv_func_iconv" != yes; then
 235       am_save_CPPFLAGS="$CPPFLAGS"
 236       am_save_LIBS="$LIBS"
 237       if test -n "$LIBICONV_INCLUDE"; then
 238         CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
 239         LIBS="$LIBS $LIBICONV_LIBDIR"
 240       fi
 241       LIBS="$LIBS -liconv"
 242       AC_TRY_LINK([#include <stdlib.h>
 243 #include <iconv.h>],
 244         [iconv_t cd = iconv_open("","");
 245          iconv(cd,NULL,NULL,NULL,NULL);
 246          iconv_close(cd);],
 247         am_cv_lib_iconv=yes
 248         am_cv_func_iconv=yes)
 249       LIBS="$am_save_LIBS"
 250       CPPFLAGS="$am_save_CPPFLAGS"
 251     fi
 252   ])
 253
 254   # Set the various flags based on the cache variables.  We can't rely
 255   # on the flags to remain set from the above code, due to caching.
 256   LIBICONV=
 257   if test "$am_cv_lib_iconv" = yes; then
 258     LIBICONV="-liconv"
 259   else
 260     LIBICONV_LIBDIR=
 261     LIBICONV_INCLUDE=
 262   fi
 263   if test "$am_cv_use_build_libiconv" = yes; then
 264     LIBICONV="$am_cv_build_libiconv_path"
 265     LIBICONV_LIBDIR=""
 266     LIBICONV_INCLUDE="$BUILD_LIBICONV_INCLUDE"
 267   fi
 268   CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
 269   LIBS="$LIBS $LIBICONV_LIBDIR $LIBICONV"
 270
 271   if test "$am_cv_func_iconv" = yes; then
 272     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 273     AC_MSG_CHECKING([for iconv declaration])
 274     AC_CACHE_VAL(am_cv_proto_iconv, [
 275       AC_TRY_COMPILE([
 276 #include <stdlib.h>
 277 #include <iconv.h>
 278 extern
 279 #ifdef __cplusplus
 280 "C"
 281 #endif
 282 #if defined(__STDC__) || defined(__cplusplus)
 283 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 284 #else
 285 size_t iconv();
 286 #endif
 287 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
 288       am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
 289     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
 290     AC_MSG_RESULT([$]{ac_t:-
 291          }[$]am_cv_proto_iconv)
 292     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
 293       [Define as const if the declaration of iconv() needs const.])
 294   fi
 295 ])
 296
 297 dnl written by Guido Draheim <guidod@gmx.de>, original by Alexandre Oliva
 298 dnl Version 1.3 (2001/03/02)
 299 dnl source http://www.gnu.org/software/ac-archive/Miscellaneous/ac_define_dir.html
 300
 301 AC_DEFUN([AC_DEFINE_DIR], [
 302   test "x$prefix" = xNONE && prefix="$ac_default_prefix"
 303   test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
 304   ac_define_dir=`eval echo [$]$2`
 305   ac_define_dir=`eval echo [$]ac_define_dir`
 306   ifelse($3, ,
 307     AC_DEFINE_UNQUOTED($1, "$ac_define_dir"),
 308     AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
 309 ])
 310
 311 dnl See whether we need a declaration for a function.
 312 dnl The result is highly dependent on the INCLUDES passed in, so make sure
 313 dnl to use a different cache variable name in this macro if it is invoked
 314 dnl in a different context somewhere else.
 315 dnl gcc_AC_CHECK_DECL(SYMBOL,
 316 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
 317 AC_DEFUN([gcc_AC_CHECK_DECL],
 318 [AC_MSG_CHECKING([whether $1 is declared])
 319 AC_CACHE_VAL(gcc_cv_have_decl_$1,
 320 [AC_TRY_COMPILE([$4],
 321 [#ifndef $1
 322 char *(*pfn) = (char *(*)) $1 ;
 323 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
 324 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
 325   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
 326 else
 327   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
 328 fi
 329 ])dnl
 330
 331 dnl Check multiple functions to see whether each needs a declaration.
 332 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
 333 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
 334 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
 335 AC_DEFUN([gcc_AC_CHECK_DECLS],
 336 [for ac_func in $1
 337 do
 338 changequote(, )dnl
 339   ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 340 changequote([, ])dnl
 341 gcc_AC_CHECK_DECL($ac_func,
 342   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
 343   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
 344 dnl It is possible that the include files passed in here are local headers
 345 dnl which supply a backup declaration for the relevant prototype based on
 346 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
 347 dnl will always return success.  E.g. see libiberty.h's handling of
 348 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
 349 dnl 1 so that any local headers used do not provide their own prototype
 350 dnl during this test.
 351 #undef $ac_tr_decl
 352 #define $ac_tr_decl 1
 353   $4
 354 )
 355 done
 356 dnl Automatically generate config.h entries via autoheader.
 357 if test x = y ; then
 358   patsubst(translit([$1], [a-z], [A-Z]), [\w+],
 359     [AC_DEFINE([HAVE_DECL_\&], 1,
 360       [Define to 1 if we found this declaration otherwise define to 0.])])dnl
 361 fi
 362 ])
 363
 364 dnl Find the location of the private Tcl headers
 365 dnl When Tcl is installed, this is TCL_INCLUDE_SPEC/tcl-private/generic
 366 dnl When Tcl is in the build tree, this is not needed.
 367 dnl
 368 dnl Note: you must use first use SC_LOAD_TCLCONFIG!
 369 AC_DEFUN([CY_AC_TCL_PRIVATE_HEADERS], [
 370   AC_MSG_CHECKING([for Tcl private headers])
 371   private_dir=""
 372   dir=`echo ${TCL_INCLUDE_SPEC}/tcl-private/generic | sed -e s/-I//`
 373   if test -f ${dir}/tclInt.h ; then
 374     private_dir=${dir}
 375   fi
 376
 377   if test x"${private_dir}" = x; then
 378     AC_ERROR(could not find private Tcl headers)
 379   else
 380     TCL_PRIVATE_INCLUDE="-I${private_dir}"
 381     AC_MSG_RESULT(${private_dir})
 382   fi
 383 ])
 384
 385 dnl Find the location of the private Tk headers
 386 dnl When Tk is installed, this is TK_INCLUDE_SPEC/tk-private/generic
 387 dnl When Tk is in the build tree, this not needed.
 388 dnl
 389 dnl Note: you must first use SC_LOAD_TKCONFIG
 390 AC_DEFUN([CY_AC_TK_PRIVATE_HEADERS], [
 391   AC_MSG_CHECKING([for Tk private headers])
 392   private_dir=""
 393   dir=`echo ${TK_INCLUDE_SPEC}/tk-private/generic | sed -e s/-I//`
 394   if test -f ${dir}/tkInt.h; then
 395     private_dir=${dir}
 396   fi
 397
 398   if test x"${private_dir}" = x; then
 399     AC_ERROR(could not find Tk private headers)
 400   else
 401     TK_PRIVATE_INCLUDE="-I${private_dir}"
 402     AC_MSG_RESULT(${private_dir})
 403   fi
 404 ])
 405
 406 dnl GDB_AC_WITH_DIR([VARIABLE], [ARG-NAME], [HELP], [DEFAULT])
 407 dnl Add a new --with option that defines a directory.
 408 dnl The result is stored in VARIABLE.  AC_DEFINE_DIR is called
 409 dnl on this variable, as is AC_SUBST.
 410 dnl ARG-NAME is the base name of the argument (without "--with").
 411 dnl HELP is the help text to use.
 412 dnl If the user's choice is relative to the prefix, then the
 413 dnl result is relocatable, then this will define the C macro
 414 dnl VARIABLE_RELOCATABLE to 1; otherwise it is defined as 0.
 415 dnl DEFAULT is the default value, which is used if the user
 416 dnl does not specify the argument.
 417 AC_DEFUN([GDB_AC_WITH_DIR], [
 418   AC_ARG_WITH([$2], AS_HELP_STRING([--with-][$2][=PATH], [$3]), [
 419     [$1]=$withval], [[$1]=[$4]])
 420   AC_DEFINE_DIR([$1], [$1], [$3])
 421   AC_SUBST([$1])
 422   if test "x$exec_prefix" = xNONE || test "x$exec_prefix" = 'x${prefix}'; then
 423      if test "x$prefix" = xNONE; then
 424         test_prefix=/usr/local
 425      else
 426         test_prefix=$prefix
 427      fi
 428   else
 429      test_prefix=$exec_prefix
 430   fi
 431   value=0
 432   case ${ac_define_dir} in
 433      "${test_prefix}"|"${test_prefix}/"*|\
 434         '${exec_prefix}'|'${exec_prefix}/'*)
 435      value=1
 436      ;;
 437   esac
 438   AC_DEFINE_UNQUOTED([$1]_RELOCATABLE, $value, [Define if the $2 directory should be relocated when GDB is moved.])
 439   ])