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 # Keep these includes in sync with the aclocal_m4_deps list in
   5 # Makefile.in.
   6
   7 sinclude(acx_configure_dir.m4)
   8
   9 dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
  10 sinclude(../bfd/bfd.m4)
  11
  12 dnl This gets the standard macros.
  13 sinclude(../config/acinclude.m4)
  14
  15 dnl This gets AC_PLUGINS, needed by ACX_LARGEFILE.
  16 sinclude(../config/plugins.m4)
  17
  18 dnl For ACX_LARGEFILE.
  19 sinclude(../config/largefile.m4)
  20
  21 dnl For AM_SET_LEADING_DOT.
  22 sinclude(../config/lead-dot.m4)
  23
  24 dnl This gets autoconf bugfixes.
  25 sinclude(../config/override.m4)
  26
  27 dnl For ZW_GNU_GETTEXT_SISTER_DIR.
  28 sinclude(../config/gettext-sister.m4)
  29
  30 dnl For AC_LIB_HAVE_LINKFLAGS.
  31 sinclude(../config/lib-ld.m4)
  32 sinclude(../config/lib-prefix.m4)
  33 sinclude(../config/lib-link.m4)
  34
  35 dnl For ACX_PKGVERSION and ACX_BUGURL.
  36 sinclude(../config/acx.m4)
  37
  38 dnl for TCL definitions
  39 sinclude(../config/tcl.m4)
  40
  41 dnl For dependency tracking macros.
  42 sinclude([../config/depstand.m4])
  43
  44 dnl For AM_LC_MESSAGES
  45 sinclude([../config/lcmessage.m4])
  46
  47 dnl For AM_LANGINFO_CODESET.
  48 sinclude([../config/codeset.m4])
  49
  50 sinclude([../config/zlib.m4])
  51
  52 ## ----------------------------------------- ##
  53 ## ANSIfy the C compiler whenever possible.  ##
  54 ## From Franc,ois Pinard                     ##
  55 ## ----------------------------------------- ##
  56
  57 # Copyright (C) 1996-2013 Free Software Foundation, Inc.
  58
  59 # This program is free software; you can redistribute it and/or modify
  60 # it under the terms of the GNU General Public License as published by
  61 # the Free Software Foundation; either version 2, or (at your option)
  62 # any later version.
  63
  64 # This program is distributed in the hope that it will be useful,
  65 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  66 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  67 # GNU General Public License for more details.
  68
  69 # You should have received a copy of the GNU General Public License
  70 # along with this program; if not, see <http://www.gnu.org/licenses/>.
  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 $am_cv_prog_cc_stdc" ;;
 157 esac
 158 ])
 159
 160 dnl Originally from Bruno Haible, but with some modifications
 161 dnl for the GDB project.
 162
 163 AC_DEFUN([AM_ICONV],
 164 [
 165   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
 166   dnl those with the standalone portable GNU libiconv installed).
 167
 168   AC_ARG_WITH([libiconv-prefix],
 169     AS_HELP_STRING([--with-libiconv-prefix=DIR], [search for libiconv in DIR/include and DIR/lib]), [
 170     for dir in `echo "$withval" | tr : ' '`; do
 171       if test -d $dir/include; then LIBICONV_INCLUDE="-I$dir/include"; fi
 172       if test -d $dir/lib; then LIBICONV_LIBDIR="-L$dir/lib"; fi
 173     done
 174    ])
 175
 176   BUILD_LIBICONV_LIBDIRS="../libiconv/lib/.libs ../libiconv/lib/_libs"
 177   BUILD_LIBICONV_INCLUDE="-I../libiconv/include"
 178
 179   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
 180     am_cv_func_iconv="no, consider installing GNU libiconv"
 181     am_cv_lib_iconv=no
 182     am_cv_use_build_libiconv=no
 183     am_cv_build_libiconv_path=
 184
 185     # If libiconv is part of the build tree, then try using it over
 186     # any system iconv.
 187     if test -d ../libiconv; then
 188       for lib_dir in $BUILD_LIBICONV_LIBDIRS; do
 189         am_save_LIBS="$LIBS"
 190         am_save_CPPFLAGS="$CPPFLAGS"
 191         LIBS="$LIBS $lib_dir/libiconv.a"
 192         CPPFLAGS="$CPPFLAGS $BUILD_LIBICONV_INCLUDE"
 193         AC_TRY_LINK([#include <stdlib.h>
 194 #include <iconv.h>],
 195           [iconv_t cd = iconv_open("","");
 196            iconv(cd,NULL,NULL,NULL,NULL);
 197            iconv_close(cd);],
 198           am_cv_use_build_libiconv=yes
 199           am_cv_build_libiconv_path=$lib_dir/libiconv.a
 200           am_cv_lib_iconv=yes
 201           am_cv_func_iconv=yes)
 202         LIBS="$am_save_LIBS"
 203         CPPFLAGS="$am_save_CPPFLAGS"
 204         if test "$am_cv_use_build_libiconv" = "yes"; then
 205           break
 206         fi
 207       done
 208     fi
 209
 210     # Next, try to find iconv in libc.
 211     if test "$am_cv_func_iconv" != yes; then
 212       AC_TRY_LINK([#include <stdlib.h>
 213 #include <iconv.h>],
 214         [iconv_t cd = iconv_open("","");
 215          iconv(cd,NULL,NULL,NULL,NULL);
 216          iconv_close(cd);],
 217         am_cv_func_iconv=yes)
 218     fi
 219
 220     # If iconv was not in libc, try -liconv.  In this case, arrange to
 221     # look in the libiconv prefix, if it was specified by the user.
 222     if test "$am_cv_func_iconv" != yes; then
 223       am_save_CPPFLAGS="$CPPFLAGS"
 224       am_save_LIBS="$LIBS"
 225       if test -n "$LIBICONV_INCLUDE"; then
 226         CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
 227         LIBS="$LIBS $LIBICONV_LIBDIR"
 228       fi
 229       LIBS="$LIBS -liconv"
 230       AC_TRY_LINK([#include <stdlib.h>
 231 #include <iconv.h>],
 232         [iconv_t cd = iconv_open("","");
 233          iconv(cd,NULL,NULL,NULL,NULL);
 234          iconv_close(cd);],
 235         am_cv_lib_iconv=yes
 236         am_cv_func_iconv=yes)
 237       LIBS="$am_save_LIBS"
 238       CPPFLAGS="$am_save_CPPFLAGS"
 239     fi
 240   ])
 241
 242   # Set the various flags based on the cache variables.  We can't rely
 243   # on the flags to remain set from the above code, due to caching.
 244   LIBICONV=
 245   if test "$am_cv_lib_iconv" = yes; then
 246     LIBICONV="-liconv"
 247   else
 248     LIBICONV_LIBDIR=
 249     LIBICONV_INCLUDE=
 250   fi
 251   if test "$am_cv_use_build_libiconv" = yes; then
 252     LIBICONV="$am_cv_build_libiconv_path"
 253     LIBICONV_LIBDIR=""
 254     LIBICONV_INCLUDE="$BUILD_LIBICONV_INCLUDE"
 255   fi
 256   CPPFLAGS="$CPPFLAGS $LIBICONV_INCLUDE"
 257   LIBS="$LIBS $LIBICONV_LIBDIR $LIBICONV"
 258
 259   if test "$am_cv_func_iconv" = yes; then
 260     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 261     AC_MSG_CHECKING([for iconv declaration])
 262     AC_CACHE_VAL(am_cv_proto_iconv, [
 263       AC_TRY_COMPILE([
 264 #include <stdlib.h>
 265 #include <iconv.h>
 266 extern
 267 #ifdef __cplusplus
 268 "C"
 269 #endif
 270 #if defined(__STDC__) || defined(__cplusplus)
 271 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 272 #else
 273 size_t iconv();
 274 #endif
 275 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
 276       am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
 277     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
 278     AC_MSG_RESULT([$]{ac_t:-
 279          }[$]am_cv_proto_iconv)
 280     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
 281       [Define as const if the declaration of iconv() needs const.])
 282   fi
 283 ])
 284
 285 dnl written by Guido Draheim <guidod@gmx.de>, original by Alexandre Oliva
 286 dnl Version 1.3 (2001/03/02)
 287 dnl source http://www.gnu.org/software/ac-archive/Miscellaneous/ac_define_dir.html
 288
 289 AC_DEFUN([AC_DEFINE_DIR], [
 290   test "x$prefix" = xNONE && prefix="$ac_default_prefix"
 291   test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
 292   ac_define_dir=`eval echo [$]$2`
 293   ac_define_dir=`eval echo [$]ac_define_dir`
 294   ifelse($3, ,
 295     AC_DEFINE_UNQUOTED($1, "$ac_define_dir"),
 296     AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
 297 ])
 298
 299 dnl See whether we need a declaration for a function.
 300 dnl The result is highly dependent on the INCLUDES passed in, so make sure
 301 dnl to use a different cache variable name in this macro if it is invoked
 302 dnl in a different context somewhere else.
 303 dnl gcc_AC_CHECK_DECL(SYMBOL,
 304 dnl     [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
 305 AC_DEFUN([gcc_AC_CHECK_DECL],
 306 [AC_MSG_CHECKING([whether $1 is declared])
 307 AC_CACHE_VAL(gcc_cv_have_decl_$1,
 308 [AC_TRY_COMPILE([$4],
 309 [#ifndef $1
 310 char *(*pfn) = (char *(*)) $1 ;
 311 #endif], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")])
 312 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then
 313   AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2])
 314 else
 315   AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3])
 316 fi
 317 ])dnl
 318
 319 dnl Check multiple functions to see whether each needs a declaration.
 320 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate.
 321 dnl gcc_AC_CHECK_DECLS(SYMBOLS,
 322 dnl     [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]])
 323 AC_DEFUN([gcc_AC_CHECK_DECLS],
 324 [for ac_func in $1
 325 do
 326 changequote(, )dnl
 327   ac_tr_decl=HAVE_DECL_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 328 changequote([, ])dnl
 329 gcc_AC_CHECK_DECL($ac_func,
 330   [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2],
 331   [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3],
 332 dnl It is possible that the include files passed in here are local headers
 333 dnl which supply a backup declaration for the relevant prototype based on
 334 dnl the definition of (or lack of) the HAVE_DECL_ macro.  If so, this test
 335 dnl will always return success.  E.g. see libiberty.h's handling of
 336 dnl `basename'.  To avoid this, we define the relevant HAVE_DECL_ macro to
 337 dnl 1 so that any local headers used do not provide their own prototype
 338 dnl during this test.
 339 #undef $ac_tr_decl
 340 #define $ac_tr_decl 1
 341   $4
 342 )
 343 done
 344 dnl Automatically generate config.h entries via autoheader.
 345 if test x = y ; then
 346   patsubst(translit([$1], [a-z], [A-Z]), [\w+],
 347     [AC_DEFINE([HAVE_DECL_\&], 1,
 348       [Define to 1 if we found this declaration otherwise define to 0.])])dnl
 349 fi
 350 ])
 351
 352 dnl Find the location of the private Tcl headers
 353 dnl When Tcl is installed, this is TCL_INCLUDE_SPEC/tcl-private/generic
 354 dnl When Tcl is in the build tree, this is not needed.
 355 dnl
 356 dnl Note: you must use first use SC_LOAD_TCLCONFIG!
 357 AC_DEFUN([CY_AC_TCL_PRIVATE_HEADERS], [
 358   AC_MSG_CHECKING([for Tcl private headers])
 359   private_dir=""
 360   dir=`echo ${TCL_INCLUDE_SPEC}/tcl-private/generic | sed -e s/-I//`
 361   if test -f ${dir}/tclInt.h ; then
 362     private_dir=${dir}
 363   fi
 364
 365   if test x"${private_dir}" = x; then
 366     AC_ERROR(could not find private Tcl headers)
 367   else
 368     TCL_PRIVATE_INCLUDE="-I${private_dir}"
 369     AC_MSG_RESULT(${private_dir})
 370   fi
 371 ])
 372
 373 dnl Find the location of the private Tk headers
 374 dnl When Tk is installed, this is TK_INCLUDE_SPEC/tk-private/generic
 375 dnl When Tk is in the build tree, this not needed.
 376 dnl
 377 dnl Note: you must first use SC_LOAD_TKCONFIG
 378 AC_DEFUN([CY_AC_TK_PRIVATE_HEADERS], [
 379   AC_MSG_CHECKING([for Tk private headers])
 380   private_dir=""
 381   dir=`echo ${TK_INCLUDE_SPEC}/tk-private/generic | sed -e s/-I//`
 382   if test -f ${dir}/tkInt.h; then
 383     private_dir=${dir}
 384   fi
 385
 386   if test x"${private_dir}" = x; then
 387     AC_ERROR(could not find Tk private headers)
 388   else
 389     TK_PRIVATE_INCLUDE="-I${private_dir}"
 390     AC_MSG_RESULT(${private_dir})
 391   fi
 392 ])
 393
 394 dnl GDB_AC_DEFINE_RELOCATABLE([VARIABLE], [ARG-NAME], [SHELL-VARIABLE])
 395 dnl For use in processing directory values for --with-foo.
 396 dnl If the path in SHELL_VARIABLE is relative to the prefix, then the
 397 dnl result is relocatable, then this will define the C macro
 398 dnl VARIABLE_RELOCATABLE to 1; otherwise it is defined as 0.
 399 AC_DEFUN([GDB_AC_DEFINE_RELOCATABLE], [
 400   if test "x$exec_prefix" = xNONE || test "x$exec_prefix" = 'x${prefix}'; then
 401      if test "x$prefix" = xNONE; then
 402         test_prefix=/usr/local
 403      else
 404         test_prefix=$prefix
 405      fi
 406   else
 407      test_prefix=$exec_prefix
 408   fi
 409   value=0
 410   case [$3] in
 411      "${test_prefix}"|"${test_prefix}/"*|\
 412         '${exec_prefix}'|'${exec_prefix}/'*)
 413      value=1
 414      ;;
 415   esac
 416   AC_DEFINE_UNQUOTED([$1]_RELOCATABLE, $value, [Define if the $2 directory should be relocated when GDB is moved.])
 417 ])
 418
 419 dnl GDB_AC_WITH_DIR([VARIABLE], [ARG-NAME], [HELP], [DEFAULT])
 420 dnl Add a new --with option that defines a directory.
 421 dnl The result is stored in VARIABLE.  AC_DEFINE_DIR is called
 422 dnl on this variable, as is AC_SUBST.
 423 dnl ARG-NAME is the base name of the argument (without "--with").
 424 dnl HELP is the help text to use.
 425 dnl If the user's choice is relative to the prefix, then the
 426 dnl result is relocatable, then this will define the C macro
 427 dnl VARIABLE_RELOCATABLE to 1; otherwise it is defined as 0.
 428 dnl DEFAULT is the default value, which is used if the user
 429 dnl does not specify the argument.
 430 AC_DEFUN([GDB_AC_WITH_DIR], [
 431   AC_ARG_WITH([$2], AS_HELP_STRING([--with-][$2][=PATH], [$3]), [
 432     [$1]=$withval], [[$1]=[$4]])
 433   AC_DEFINE_DIR([$1], [$1], [$3])
 434   AC_SUBST([$1])
 435   GDB_AC_DEFINE_RELOCATABLE([$1], [$2], ${ac_define_dir})
 436   ])
 437
 438 dnl GDB_AC_CHECK_BFD([MESSAGE], [CV], [CODE], [HEADER])
 439 dnl Check whether BFD provides a feature.
 440 dnl MESSAGE is the "checking" message to display.
 441 dnl CV is the name of the cache variable where the result is stored.
 442 dnl The result will be "yes" or "no".
 443 dnl CODE is some code to compile that checks for the feature.
 444 dnl A link test is run.
 445 dnl HEADER is the name of an extra BFD header to include.
 446 AC_DEFUN([GDB_AC_CHECK_BFD], [
 447   OLD_CFLAGS=$CFLAGS
 448   OLD_LDFLAGS=$LDFLAGS
 449   OLD_LIBS=$LIBS
 450   # Put the old CFLAGS/LDFLAGS last, in case the user's (C|LD)FLAGS
 451   # points somewhere with bfd, with -I/foo/lib and -L/foo/lib.  We
 452   # always want our bfd.
 453   CFLAGS="-I${srcdir}/../include -I../bfd -I${srcdir}/../bfd $CFLAGS"
 454   LDFLAGS="-L../bfd -L../libiberty $LDFLAGS"
 455   intl=`echo $LIBINTL | sed 's,${top_builddir}/,,g'`
 456   # -ldl is provided by bfd/Makfile.am (LIBDL) <PLUGINS>.
 457   if test "$plugins" = "yes"; then
 458     AC_SEARCH_LIBS(dlopen, dl)
 459   fi
 460   LIBS="-lbfd -liberty $intl $LIBS"
 461   AC_CACHE_CHECK([$1], [$2],
 462   [AC_TRY_LINK(
 463   [#include <stdlib.h>
 464   #include "bfd.h"
 465   #include "$4"
 466   ],
 467   [return $3;], [[$2]=yes], [[$2]=no])])
 468   CFLAGS=$OLD_CFLAGS
 469   LDFLAGS=$OLD_LDFLAGS
 470   LIBS=$OLD_LIBS])